Installation and Maintenance Manual S400D-230/110V UPS

Installation and Maintenance Manual S400D-230/110V UPS
Installation and Maintenance Manual       S400D-230/110V UPS




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Installation and Maintenance Manual S400D-230/110V UPS
Installation and Maintenance Manual                           S400D-230/110V UPS

Dear Customer,

Please accept our thanks for giving us the privilege to serve you by choosing a Liebert
make ‘UPS’.

If this is your first Liebert UPS, we hope it is the beginning of a long relationship
Which delivers value to your organisation. If you already own and use a Liebert
Product, we are doubly honored by your decision of continuing this relationship.

It is our constant endeavor to partner you for the growth and success of your Business.
This philosophy is reflected in our Mission statement “To deliver value through Air &
Power Quality solutions to achieve customer delight”. Please do give us feedback to help
us realize our Mission.




Emerson Network Power (India) Private Limited




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Installation and Maintenance Manual S400D-230/110V UPS
Installation and Maintenance Manual                        S400D-230/110V UPS

IMPORTANT

This manual contains information concerning the installation, operation and
Maintenance of the S400D Uninterruptible Power System (UPS) for the single
Module and one plus one Systems.

All relevant parts of the manual should be read prior to commencing installation.

The UPS must be commissioned by an engineer approved by the
manufacturer (or his agent) before being put into service. Failure to
observe this condition will invalidate any implied warranty.

The S400D UPS has been designed for Commercial / Industrial use only.

The S400D has not been designed for direct use in any life support application. If
you encounter any problem with the procedures contained in this manual you
should seek immediate assistance from Emerson Network Power (India) Pvt. Ltd.
Sales Office from whom the equipment was purchased. Alternatively contact the
Emerson Network Power (India) Pvt. Ltd Customer Service & Support
department at the address shown below:


                EMERSON NETWORK POWER (INDIA) PRIVATE LIMITED
                      Plot No. C-20, Road No. 19
                      Wagle Industrial Estate
                      Thane – 400 604, INDIA
                      Phone: (00 91 22) 33154400


                          Fax: (00 91 22) 25828358
                                          25800829

Emerson Network Power (India) Private Limited pursues a policy of continual
product development and reserves the right to change the equipment without
notice.


                   @ Copyright 1999 by Emerson Network Power
                      Unauthorized reproduction prohibited
                               All rights reserved




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Installation and Maintenance Manual S400D-230/110V UPS
Installation and Maintenance Manual                                S400D-230/110V UPS




                     TELEPHONE: (00 91 22) 33154400
                     FAX: (00 91 22) 25800829 / 25828358

                                   ***SOUTH ZONE***
Banglore          No. 412, Jindal Center, Opp Sukhsagar Hotel, 3rd Flr, 100 Fleet Road,
                  Koramangalam, Bangalore - 560 095.
Tel:              91-080-33154000
Fax:              91-080-41135570

Chennai           Oms Court, No.1, Nathamuni Street, T.Nagar, Chennai - 600 017.
Tel:              91-044-33154000 to 4039
Fax:              91-44-33154035

Cochin            No. 40 / 9338, (New No. 59 / 4517), 4th Floor, Chakos Towers, Padma
                  Pullepady Road, Cochin - 682035
Tel:              91-484-3325400/405
Fax:              91-484-2341 986

Hyderabad         405/406 First Floor,No. 62, Navketan Complex, S D Road , Hyderabad -
                  500003
Tel:              91-40-33154000
Fax:              91-40-2780 6777

Coimbatore        343/ B-17, SVP Complex, 2nd floor, Avaram Palayam Road, Sidha Pudur,
                  Coimbatore- 641044
Tel:              0422 33254000
Fax:              0422-4389625/3325403

Mangalore         Raj Business Centre , 3rd Floor, Balmatta Road, Mangalore - 575001
Tel:              9901055188
Fax:

Vishakhapatanam No.7,Vishakha Executiva Centre, 47-11-1/5,1st Floor Eshwar Arcade,
                Dwarkanagar,1st Lane,Vishakhapatnam - 530 016.
Tel:            9908400029
Fax:

Trivandrum        2nd Floor , Megabyte , Business Centre , Capital Tower, Statue Junction ,
                  Trivandram-695001
Tel:              0471-6450388
Fax:




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Installation and Maintenance Manual                              S400D-230/110V UPS

                                 ***NORTH ZONE***
Gurgaon                Plot no-2 udog, Vihar phase-iv, Gurgaon, Haryana, India-122016
Tel:                   91-0124-3315500
Fax:                   91-0124-3315480

Lucknow                NO.-05, 3rd floor, Raja Ramkumar Plaza, On Top Of City Mart, 75,
                       Hazratganj, Lucknow - 226001.
Tel:                   0522-33154000, 9838074281
Fax:                   0522-2239877

Chandigarh             SCO 58, 2 ND Floor, Sector 47 – C, Chandigarh - 160047
Tel:                   0172-3931893
Fax:                   0172-5016531

Guwahati               Institution of Enginners Building (3rd floor), Near Lakhtakia
                       Overbridge, Panbazar, Guwahati - 781 007.
Tel:                   91-361-2734485
Fax:                   91-361-2734486

Allahabad              Emerson Network Power , 18/4, Tagore town, Bhansi Bhavan, In
                       front of old LIC building, Allahabad
Tel:                   9838074007
Fax:

Varanasi               Ananat Complex, D-64/132 KA, SIGRA,Varanasi- 221010
Tel:                   9838074007
Fax:




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Installation and Maintenance Manual                                S400D-230/110V UPS

                                    ***WEST ZONE***
Mumbai        414-424, 'b' wing, "Bhaveshwar arcade", opp. Shreyas cinema, LBS Marg,
              Ghatkopar (west), Mumbai-400086.
Tel:          91-22-67208800
Fax:          91-22-67208805

Pune          Office No. 7, II nd Floor, Pratibha Towers, Opp. Jog Center, Pune - Mumbai
              Road, Wakdewadi, Shivaji Nagar, Pune - 411 016
Tel:          020-33154024
Fax:          020-66235001

Baroda        39/2, Arunodaya Society, Alkapuri, Baroda - 390 005.
Tel:          91-265- 3929500
Fax:          91-265-2343937

Ahmedabad     205, Sukhsagar complex, beside Fortune Landmark Hotel, Usmanpura, Ashram
              Road, Ahmedabad. Gujarat – 380 013
Tel:          079 – 27560230/40
Fax           079-7-27560230

Nagpur        69, Hindustan Colony, Vivekanand Nagar Post, Wardha Road, Nagpur-440015
Tel:          0712-25634997
Fax:          0712-25634997

Vikroli       Dheeraj Kawal, 1st floor, Near Vikroli Station, LBS Road, Vikroli(w)
Tel           022-40780308, 40780303
Fax           022-40110183

Bhopal        Emerson Network Power , Plot No. 18, Second floor , Liberty chamber , Near
              Batra Hospital, Zone 1 , Maharana Pratap Nagar, Bhopal, MP - 462011
Tel           9993590589

Indore        109, Ratnamani Complex, 7/1 New Palasra, Indore - 452 001
Tel:          0731-4023806
Fax:

                                   ***EAST ZONE***
Kolkata         Advantage Tower, 7th Floor, Plot EN27, Sector-V, Salt Lake, Kolkata-700091
Tel:            91-33-33154000
Fax:            91-33-33154001

Jamshedpur      Ground Floor, Contractor’s Area, Kashi Kanj, Road no.2, Bistupur,
                Jamshedpur-831001
Tel:            0657-6546636
Fax:

Bhubaneswar     Plot No. 267, AN Plaza, Rasulgarh, Bhubaneshwar, BHUBANESHWAR -
                751 010
Tel:            0674-2586003
Fax:            0674-2580058


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Installation and Maintenance Manual                        S400D-230/110V UPS

Instructions for safe use:

Note that the S400D series of UPS is a highly sophisticated piece of instrument
designed to meet the critical power requirements of you valuable load. Hence it
becomes imperative that this UPS be installed by a service personnel trained by
EMERSON NETWORK POWER (INDIA) PVT LTD in the installation and
operation of this instrument. Failure to observe this condition will invalidate any
implied warranty.

This manual provides complete information required for safely operating [by a
qualified personnel] the S400D UPS that you have purchased. Any attempts to
operate the UPS should be carried out only after the operator has completely
read this manual.

   I.     If you encounter any problem with the procedure contained in the
          manual you should seek immediate assistance from the dealer /
          distributor from whom you have purchased this unit or contact the
          nearest ENP (I) service office. In case of a emergency you can get in
          touch with the “ Technical Support Department " at

                 EMERSON NETWORK POWER (INDIA) PVT LTD
                 Plot no. C/20, Road No. 19,
                 Wagle Industrial Estate,
                 Thane (West) - 400 604,
                 Phone No: (022) 67208000,67208200,67208800.
                 FAX No.: (022) 25824286, 25828358.

   II.    The Customer Sales and Service wing can also arrange for service
          contract and full commissioning service.

   III.   The S400D UPS and its accessories must be installed by an
          ENP (I) qualified technician only.

   IV.    The S400D UPS must be properly earthed at all time. The S400D UPS
          has been designed for indoor UPS. It should be protected from rain or
          excessive moisture and installed in a clean environment, free from
          inflammable liquids, asses or corrosive substances. Do not stand
          beverage containers, plants or any other product containing liquid, on
          the top of the unit.

   V.     Do not place any type of magnetic storage media on the top of the unit
          as this may cause data corruption.

   VI.    The S400D UPS has been designed to protect your load and itself
          under such a condition it will be not advisable to provide supply to the
          load by bypassing the UPS via the maintenance bypass. Please
          consult the manual for finding out the cause of supply disruption before
          resorting to any further course of action.

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Installation and Maintenance Manual                        S400D-230/110V UPS


 VII.    Do not operate the UPS before the ENP (I) Approved service
         personnel has commissioned the unit. He will validate the installation
         work and install the required site information in to the micro-controller
         memory. This information is required to substantiate any warranty
         claims that might be made.

 VIII.   When working on the unit it must be remembered that the unit will be
         having live voltage at all time unless it is isolated from the mains
         supply and the batteries. It is hence necessary that the safety and
         precautionary notes contained in various sections of this manual be
         read and thoroughly understood before touching any of the internal
         components of the UPS. Pay special attention to the safety warnings
         concerning the handling and fitting of the UPS batteries.

 IX.     Weight and mobility hazards: The S400D units should be handled
         using proper lifting aids during transportation and installation. Pay
         attention to the handling tips provided in the installation instructions.

 X.      Contact qualified service personnel’s if any of the following conditions
         are observed
           A. Power cables have been damaged
           B. Fluids have been spilt on the unit or battery.




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Installation and Maintenance Manual       S400D-230/110V UPS




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Installation and Maintenance Manual                     S400D-230/110V UPS

CHAPTER 1
GETTING THE UPS CONNECTED                                             12

1.1 Safety Warnings                                                   12
1.2 Equipment’s Accessories                                           12
  1.2.1 UPS                                                           12
1.3 Installation Considerations                                       12
  1.3.1 Environmental Considerations                                  13
  1.3.2 Access Considerations                                         13
  1.3.3 Weight Considerations                                         13
  1.3.4 Electrical Considerations                                     13
  1.3.5 Battery Considerations                                        14
1.4 Installation Procedure                                            14
  1.4.1 Unpacking and visual examination of UPS                       14
  1.4.2 Final Positioning of UPS                                      15
  1.4.3 Installing Batteries in Battery Cabinet                       17
1.5 Power connection points on the UPS                                20
  1.5.1 External Power cable connections for Single Module            21
  1.5.2 External Power Cable connections for Parallel Module (1+1)    23

CHAPTER 2
OPERATING INSTRUCTIONS                                                28

2.1 Introduction                                                      28
2.2 Operator control switches                                         28
  2.2.1a Main control rotary switch (S1)                              29
  2.2.1b Output & Maintenance Bypass MCBs ‘S7’ and ‘S8’               30
  2.2.2 Run / Standby switch (S2)                                     31
  2.2.3 Black Start Disable Switch (S4)                               31
2.3 Operating procedure                                               32
  2.3.1 Important notes                                               32
  2.3.2 Initial condition                                             32
2.4 UPS Startup Process (For single Module)                           32
2.5 Load Power Down / Up Procedure                                    34
  2.5.1 LOAD POWER DOWN PROCEDURE (for the single module)             34
  2.5.2 LOAD POWER UP PROCEDURE (for Single Module)                   35
2.6 UPS Shut Down Procedure (for Single Module)                       35
2.7 UPS Startup Procedure [for (1+1) parallel module]                 36
2.8 Load Power Down/Up Procedure for PARALLEL module                  37
  2.8.1 Load power down procedure                                     37
  2.8.2 Load power up procedure                                       38
2.9 UPS Shutdown Procedure for (1+1) Parallel Systems                 38




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Installation and Maintenance Manual        S400D-230/110V UPS

2.10 Alarms and Indications                              39
  2.10.1 Normal operation                                39
  2.10.2 Mains failure                                   40
  2.10.3 Other fault or alarm conditions                 40
2.11 Operator Trouble shooting Guide                     41

CHAPTER 3
MAINTENANCE                                              42

3.1 Daily or Routine Checks                              42
3.2 Monthly Checks                                       42
3.3 Scheduled Maintenance Checks                         43




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Installation and Maintenance Manual                         S400D-230/110V UPS




1.1 Safety Warnings

   • The equipment must be installed by a Company’s approved qualified person.

   • Do not switch on the electrical power to the UPS equipment before the arrival
    of the commissioning engineer.

   • Special care should be taken when working with the battery associated with
    this equipment. When connected together the terminal voltage exceeds 300Vdc
    and this is potentially lethal.

   • Eye protection & hand glows should be worn while working with batteries to
     prevent any injuries from accidental electrical arcs or chemicals.

  • If a battery leaks electrolyte, or is otherwise physically damaged, it should be
    contained in a container resistant to sulphuric acid.

1.2 Equipment’s Accessories

This section describes the parts, which are supplied along with the UPS. These parts
have to be examined on receipt of the system.

1.2.1 UPS

The UPS is mounted on a wooden base palette and fixed on to the same. The unit is
wrapped in polythene sheets and enclosed in corrugated box. Enclosed along with
each unit are
     • Battery and Bypass fuses (if not fitted on fuse base)
     • Communication kit (optional)
     • Paralleling flat cable (optional)

1.3 Installation Considerations

In this section we will have a look at a certain point which need to be considered
while choosing a location for UPS and the process of Installation.




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Installation and Maintenance Manual                                    S400D-230/110V UPS


1.3.1   Environmental Considerations

The internal ruggedness and external aesthetics of the S400D unit allows the UPS to
be installed in an office environment or in a general plant room. Wherever the UPS is
installed ensure the following points:

•    The location must be cool, dry and clean with adequate ventilation to keep the
     ambient temperature below 450C. If the UPS is supplied with Sealed Maintenance
     Free Batteries, place the batteries in Air Conditioning atmosphere. Not keeping
     the batteries in controlled temperature of 25-270C will drastically reduce its life.

•    The installation location must be kept clear of contaminants such as excessive
     moisture, inflammable or combustive vapours, chemical fumes and corrosive
     gasses or liquids.

•    If needed install extractor fans in the room to aid air circulation. Use suitable air
     filtration system for locations where the UPS is to operate in dusty environments.

1.3.2    Access Considerations

The UPS is forced cooled with the aid of internal cooling fans. Cooling air enters the
UPS from the front and is exhausted through the ventilation grills located at the back
of the UPS. Hence you must allow a minimum gap of 150mm behind the equipment
to allow for adequate airflow.

The unit requires access from all four sides and top for the purpose of
troubleshooting or maintenance. Hence ensure that all sides and top of UPS are
easily accessible.

Being mounted on castors, it is possible to install the UPS as a Mobile unit, provided
that its input and output power cables are held in suitably flexible conducts. This
type of installation allows the UPS to be flush fitted as a part of an equipment suit
and pulled forward for service access when required.

1.3.3    Weight Considerations

The weight of the UPS makes it difficult to move the equipment over certain floor
surface such as carpets. This should be taken into consideration during the
positioning of the equipment for installation, and when deciding whether or not to
install the UPS as a Mobile unit.

1.3.4 Electrical Considerations

Follow the table given below to select Power cables for S400D UPS external
connections. The table shows current ratings when UPS is loaded to its 100%
capacity.

Note: - Since UPS has 150 % overload capacity, select the cables considering the 150% overload capacity
for 60 seconds.




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Installation and Maintenance Manual                                       S400D-230/110V UPS



   Table for current ratings for UPS loading to 100% -

                 S400D UPS                           10 kVA         10 kVA           20 kVA            5 kVA
   Rating                                             110V           230V             230V             230V
   Nominal Input Current at 415VAC                     15A           15A               30A              19A
   Maximum Battery Current (Discharge)                 30A           30A               60A              18A
   Maximum Output Current (100%)                       91A           44A               87A              22A
   Maximum Bypass Current (100%)                       91A           44A               87A              22A

   Note:    1. For Common Bypass UPS, Input cable rating should be same as Output cable rating.
            2. S400D UPS with 110V output does not support the common Bypass.
            3. S400D UPS can be used for 220V, 240V also as per customer requirement.
            4 .S400D 5kVA UPS nominal input current at 24A battery charging current.

   1.3.5    Battery Considerations

   The UPS has been designed for the use with various variety of batteries. If the
   batteries are being installed at a distance from the UPS ensure that the cable used is
   such that the total voltage drop in the cable does not exceed 3 Volts. In case the
   batteries are being installed in a separate room ensure that DC isolators of adequate
   rating is mounted on each Battery rack. These isolators should be easily accessible.
   These will be useful for isolating the Batteries from UPS for safe maintenance.

   1.3.5.1 Float/ Boost Charging Specifications of S400D

   1.3.5.1.1. Definitions

            1.   FBC – Float/ Boost Charger.
            2.   SMF – Sealed Maintenance Free Batteries.
            3.   Ni-Cd – Nickel Cadmium Batteries.
            4.   Lead-Acid – Lead Acid (Wet Cell) Batteries.
            5.   VRLA – Valve regulated Lead Acid
            6.   EOD: End of Discharge Voltage
            7.   VPC: Volts per cell

   1.3.5.1.2. Float/ Boost Voltage Levels

   Following table shows the float voltage and boost voltage levels for different types of
   battery cells/ Block.

  Battery        V / Cell           Rectifier Voltage        No.of          No. Of      total cells
                                                                                                        V / Block
   Type    Float Normal Boost    Float Normal Boost       Cells /block      Blocks
SMF/VRLA 2.25      NA 2.35 *      351     NA       367         6              26           156              12
 Lead Acid                                                6 cells per     24 blocks /                 12v per block /
  Wet cell 2.18    2.4     2.7    314    346      389    block / 1 cell    144 cells       144          2v per cell
   Ni-Cd   1.42    NA     1.55    351    NA       383          1             247           247             1.2

       *For Boost charging in SMF/VRLA, VPC value depends on Manufacturers
       Specifications/ recommendation; also applicable only if cyclic operation of the
       battery is selected.
       NA : Not Applicable.



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Installation and Maintenance Manual                                         S400D-230/110V UPS

Rectifier Voltage in S400D will be automatically generated depending on the type of
Battery selected from the MIMIC LCD display.

SMF Battery can be selected to charge (a) In NON-Cyclic mode as “CVCC”, and
(b) In Cyclic mode as “FBC”

1.3.5.1.3. Battery charge current limit

The Battery Charge current limit is settable from MIMIC LCD display.
 In S410D UPS, Battery current limit is adjustable from 1A to 4A.
 In S420D UPS, Battery current limit is adjustable from 1A to 7A.
 In S400D 5kVA UPS, Battery current limit is adjustable from 1A to 24A.

1.3.5.1.4. End of Discharge

        EOD for SMF/ VRLA : 1.67V / cell
        EOD for Lead Acid Wet cell: 1.80V/ cell
        EOD for Ni-Cd: 1.05V/ cell.

1.3.5.1.5. Over voltage protection for the battery

The batteries will get isolated by the DC Contactor if the DC Voltage is above
         (V boost+10V)

1.4 Installation Procedure

In this section we will study the procedure for installation of the UPS.

1.4.1   Unpacking and visual examination of UPS

Remove the packing and all the packing derbies, base pallet, as per the Instruction
sheet attached on the UPS cabinet. Carry out a through external visual check of the
UPS to verify that it is complete and free of shipping damage. Report any such
damage to the shipper immediately.

Note: - Before installing the UPS ensure that you have received all the accessories as mentioned in the
purchase order or packing list.


1.4.2      Final Positioning of UPS

 1. Move the UPS to the final position but leave adequate room for working.

 2. Remove the Top and Front cover as shown in figure 1.1. Locate the Bypass fuses
   (if available) and Battery fuses packed separately and retain for fitment at a later
   stage.

3. Remove both side covers and open the top PCB tray. Carefully examine the
   interiors of the whole UPS for signs of shipping damages, general component
   loose connection etc. Report any damage immediately.

4. Fix the stabilizing bracket again in a new orientation with adjustable jacking
   feets facing the ground as shown in figure 1.2.




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Installation and Maintenance Manual                          S400D-230/110V UPS




              Fig.1.1 Opening of top, front and side covers


5. Ensure that the brackets are properly seated in their locating channels and
   secured correctly as they support large proportion of the equipment weight once
   the feet’s are screwed down.




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Installation and Maintenance Manual                           S400D-230/110V UPS




1.4.3   Installing Batteries in Battery Rack

Arrange the Batteries inside the Battery rack as shown in figure 1.3. Secure the
batteries to their final position. Pay attention to the polarity of each individual block
of battery.

Interconnect the batteries using the battery links supplied. Pay careful attention to
the polarity of connection. Please ensure that the positive terminal of any battery
should be connected to the negative terminal of the next battery.




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Installation and Maintenance Manual                                  S400D-230/110V UPS




                 NOTE: Observe Battery Polarity carefully.

                        Fig. 1.3 Battery Arrangement & Cable connections




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Installation and Maintenance Manual                           S400D-230/110V UPS




                              Fig. 1.4 Battery cabinet & UPS

Using Power cable, connect the +ve terminal of extreme battery (battery no. 28) to
the +ve terminal of Battery isolator, and –ve terminal of extreme battery (battery
no. 1) to the –ve terminal of Battery isolator.

Keep F1 and F2 of UPS open and connect cable from battery isolator +ve to Battery
+ve terminal of the UPS. Connect cable from battery isolator -Ve to the Battery –ve
terminal of the UPS.

Mount Temperature Sensor PCB on one of the battery, connect other end of the
temperature sensor PCBs wire to the Socket below S2 switch, on the back side of
UPS.


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Installation and Maintenance Manual                                        S400D-230/110V UPS

1.5 Power connection points on the UPS

Figure 1.5 illustrates the front side of power connection points on the S400D unit.




                     Fig. 1.5 Front side Power connectors for the External connection

Note: There are additional terminal blocks provided in the UPS. The reason for having two identical sets
of power terminals is to provide flexibility in power cable inter-connection in the case of a 1+1 system.
This will be evident when we discuss power cabling for a 1+1 system.

For the individual UPS system following are the Input / Output / battery
cables
 • UPS Input: 3 phase, 4 wire with pin type lug for UPS terminals connection.
 • Bypass input: Single Phase - 2 wire with pin type lug for UPS terminal
  connection.
 • UPS Output: Single Phase - 2 wire with pin type lug for UPS terminal
  connection.
 • Battery: DC - 2 wire with pin type lug for UPS terminal connection.
 • Earth: 6mm2 green wire

Note: All UPS are dispatched as common bypass by shorting R phase (U1) to bypass live (U3) and input
neutral (N1) to bypass Neutral (N3) through links.




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Installation and Maintenance Manual                                      S400D-230/110V UPS

1.5.1 External Power cable connections for Single Module




        Fig 1.6 Input, Bypass, Load and Battery Power connections for Common and Split Bypass


CAUTION

S410D UPS with 110Vac does not support common bypass. Before giving input supply to the
UPS ensure the split bypass connections.



1. Three phase input supply connection.

Connect 3-phase supply of the Mains to 3 PHASE input terminals – U1, V1, W1 and
N1 of MCB in UPS. Connect the other end of cable coming from U1 terminal to R
phase, V1 terminal to Y phase, W1 terminal to B phase and N1 terminal to Neutral of
input circuit breaker.

2. Load connection

Connect Output load cable to U2 & N2 terminals on the front side of the UPS.
Connect the other end of U2 cable (live) and N2 cable (neutral) to the Load breaker.

3. Common bypass connection from main supply

By default the UPS is configured in common bypass mode by shorting input U1-U3 &
Neutral N1-N3.

OR




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Installation and Maintenance Manual                         S400D-230/110V UPS

3. Split bypass from external supply

Remove Shorting links (*) as shown in figure 1.6. These shorting links are connected
at Input (U3 – U1) and Neutral (N1 – N3). Connect input phase of Bypass to U3 and
input neutral to N3 terminal of UPS.

4. Battery connection

Note: Ensure that the Battery fuse switch (F1 & F2) of the UPS are kept open.
Connect the Battery cables to +ve and –ve terminals on the front side of UPS. The
other end of +ve terminal (UPS) is connected to positive terminal of Battery Isolator,
and –ve terminal (UPS) is connected to negative terminal of Battery Isolator, which
is located near or on the Battery rack.

5. Battery Temperature Sensor

On the backside of the UPS below S2 switch there is a battery sensor plug. Remove
the plug and connect Battery sensor PCB wires plug into the socket. Mount Battery
temperature PCB on one of the Battery inside the Battery rack.

6. Remote Stop

If Remote Stop is used there is a REMOTE STOP Socket on the backside to the UPS.
Remove the plug from the socket and connect Remote stop wire plug into the socket.
Connect other end of the wire to Remote stop Switch.

7. Earth Connections

Connect dedicated Earth connections to the UPS on the Earth terminals provided on
the front side of UPS.




Note: Voltage between Earth and Neutral should be 5V




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Installation and Maintenance Manual                                          S400D-230/110V UPS


1.5.2 External Power Cable connections for Parallel Module (1 +1]




                        Fig. 1.7 Parallel module cable connections with Split Bypass.


1. Three phase input supply connection of UPS 1

Connect 3-phase supply of the Mains to 3 PHASE input terminals – U1, V1, W1 and
N1 of MCB for UPSI. Connect the other end of cable coming from U1 terminal to R
phase, V1 terminal to Y phase, W1 terminal to B phase and N1 terminal to Neutral of
input circuit breaker.

2. Three phase input supply connection of UPS 2

Connections for the Input supply to UPS 2 should be done in similar way, as for
UPSI.

Note: There could be two different or one single 3 phase input supply breakers for both the UPS’s.

3. Load connection of UPS 1

Connect Output load cable to U2 & N2 terminals on the front side of the UPSI.
Connect the other end of U2 cable (live) and N2 cable (neutral) to the Load breaker.




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Installation and Maintenance Manual                                    S400D-230/110V UPS

4. Load connection of UPS 2

Connect Output load cable to U2 & N2 terminals on the front side of the UPS2.
Connect the other end of U2 cable (live) to U2 terminal of UPSI, and N2 cable
(neutral) to the N2 terminal of UPSI.

5a. Split bypass supply connection of UPS 1

Note: - for S400D 110V UPS, bypass should be supplied by 110V separate AC source.

Remove shorting links between R phase (U1) & Bypass live (U3) and input Neutral
(N1) and bypass neutral (N3). Connect Bypass cables to U3 & N3 terminals on the
front side of the UPSI. Connect the other end of cable coming from U3 terminal to
the live phase and N3 to the neutral of the Bypass supply breaker.

6a. Split Bypass connection of UPS 2

Connect Bypass cables to U3 & N3 terminals on the front side of the UPS2. Connect
the other end of cable coming from U3 terminal to U3 terminal of UPSI, and the
cable coming from N3 terminal to the N3 terminal of UPSI.

OR

5b. Common Bypass supply connection of UPS 1

Note: - common bypass in not supported by S400D 110V UPS

Common bypass is factory set by shorting R phase (U1) to bypass live (U3) and
input neutral (N1) to bypass neutral (N3). External cable connection is not
necessary.

6b. Common Bypass connection of UPS 2

Common bypass is factory set by shorting R phase (U1) to bypass live (U3) and
input neutral (N1) to bypass neutral (N3). External cable connection is not
necessary.




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Installation and Maintenance Manual                                       S400D-230/110V UPS




                      Fig. 1.8 Parallel module cable connections with Common Bypass
                            (Note: S410D with 110Vac doesn’t common Bypass.)

6. Separate Battery Connection of UPSI – Battery 1 & UPS2 – Battery 2

Note: Ensure that the Battery fuse switch of the UPS is kept open.

Connect the Battery cables to +ve and –ve terminals on the front side of UPSI. The
other end of +ve terminal (UPSI) is connected to positive terminal of Battery
Isolator, and –ve terminal (UPSI) is Connected to negative terminal of Battery
Isolator, which is located near the Battery rack. Repeat same cabling for UPS 2
battery connections as UPS 1 battery connections.


7. Battery Temperature Sensor (UPSI & UPS2)

On the backside of the UPS below S2 switch there is battery sensor plug. Remove
the plug and connect Battery sensor PCB wires plug into the socket. Mount
Temperature sensor PCB on one of the battery inside the Battery cabinet

8. Remote Stop (UPSI and UPS2)

If Remote stop has to be used, there is a Remote Stop Socket on the backside of the
UPS 1. Remove the plug from socket and connect Remote stop wires plug into the
socket. Connect other end of the wire to Remote stop switch. Repeat the same
procedure for UPS 2.




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Installation and Maintenance Manual                           S400D-230/110V UPS

9. Earth Connections

Connect dedicated Earth connections to both the UPS - UPS 1 and UPS 2 on the
Earth terminals provided on the front side.




Note that the unit that you receive has been set to work as per the requirements
specified by you in the purchase document. In such a case use the information
provided in the following paragraph as a means of cross checking the settings. DO
NOT DISTURB ANY SETTING IF YOU HAVE ANY DOUBT ABOUT THE SAME AND /OR ARE
NOT WELL AWARE OF THE IMPLICATIONS OF CHANGING ANY PARTICULAR SETTINGS.

IN CASE OF DOUBT ASK
The regional office representative or Technical Support at Head office.




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Installation and Maintenance Manual                            S400D-230/110V UPS

CHAPTER 2
OPERATING INSTRUCTIONS

2.1 Introduction

This chapter describes the procedure for operating the UPS.

Note that here the following conditions are assumed –
• It is assumed that the UPS has been properly installed by Company’s trained
   service personnel and needs no further internal settings.
• Batteries are connected.
• The input, bypass and battery fuse are OK and their respective fuse holders are
   open. (If not base mounted fuse)

In   this chapter we will have a look of the following major issues
•     Operator controls.
•     Startup and shut down procedure.
•     Interpretation of alarm conditions and actions to be taken.
      In the latter part of this chapter we will have a look at the operation of the UPS
      when connected in parallel.

2.2 Operator control switches

S400D uses both DSP based and powerful H8 micro controllers for controlling the
power, display & annunciation and communication. The firmware has been designed
so at to make the system operation fully automatic and reduce the operator
involvement at start up and shutdown to the bare minimum. In fact in the event of
any negligence on the part of the operator the UPS system controller takes care of
the system with appropriate alarm. However, ensure that the UPS system is
operated by a qualified technician who has read this manual and fully understood the
operation of the system.

As described in the last chapter here are five switches which are used to control the
operation of the UPS viz.,

         Output MCB S7, Maintenance Bypass MCB S8
         Run / Standby switch (S2)
         Black start disable switch (S4)




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Installation and Maintenance Manual                                    S400D-230/110V UPS


2.2.1 Output & Maint Bypass MCBs ‘S7’ and ‘S8’

UPS Position (Output MCB ‘S7’ ON)




Ensure that the MCB ‘S8’ is OFF and then turning ON MCB ‘S7’ the load is connected
to the output of the UPS i.e. from the inverter, thus depending on the status of the
static switch the load will either be on Static Bypass source or on the Inverter. This is
the position in which the switch should be for Normal operation.

Maintenance bypass (Maintenance Bypass MCB ‘S8’ ON)

Note: - for S400D 110V UPS, bypass should be supplied by 110V separate AC source.

While on maintenance bypass the load will be connected directly to the bypass
supply source and will be isolated from the output of the static switch assembly. To
switch ON MCB ‘S8’ first keep the UPS in Bypass mode and then Switch ON this MCB
‘S8’.

This MCB ‘S8’ is used for powering the critical load from the bypass source while the
UPS can be shutdown by the service personnel for the sake of maintenance or
trouble shooting the UPS system. Do note that this MCB ‘S8’ should be ON only in
emergency situations where the UPS has to be shut down for maintenance or
troubleshooting of the UPS and is not for normal supply of power to the load.




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2.2.2 Run / Standby switch (S2)




This switch allows you to turn OFF the UPS if required as a part of the day to day
operation - at the end of the working day for example.

When the switch is in the STANDBY or OFF position the microcontroller switches OFF
inverter, bypass and inverter static switch. Thus the load power is removed from the
UPS output terminal but the rectifier remains ON so as to charge the batteries. In
this position it will be noted that the upper and lower load LED’s on the front mimic
panel will be OFF. When the switch is turned on to RUN or ON position the inverter
turns ON and the output of the inverter is switched over to the load terminal.




2.2.3 Black start disable switch (S4)

This switch is to Enable or disable the black start facility. In case of mains failure UPS
shutdown due to fully discharge of batteries. Here batteries still keep on discharging
through black start & bleeder resistors. This can be avoided by switching OFF this
switch i.e. black start Disabling. This switch can be accessed after removing the front
panel.




Note: As per factory setting, this switch will be kept OFF




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2.3 Operating procedure

Usually the UPS can be considered to be one of the four selected operating states. :
       - Shutdown
       - Maintenance Bypass
       - Stand by
       - Normal operation

The following Operating procedures enables you to start and stop the UPS (i.e.
change from the ‘shutdown’ or ‘maintenance bypass’ condition to ‘normal operation’
and vice versa) in safe logical manner.

The procedures take the form of charts containing a sequence of actions along with
the appropriate equipment response (i.e. LED indication and messages).

We will have a look at how to start or stop the UPS in a safe and logical manner.

2.3.1 Important notes

  1. The operator controls and indicators have been fully described in the previous
     section.
  2. Audible alarms may sound at various points of the start up procedures. It can
     be cancelled at any time by pressing the alarm reset switch on the front display
     panel.
  3. During the first 10 seconds of start-up LCD & Audible warning status are
     random.
  4. When turning ON the UPS, if LCD display panel does not respond as indicated in
     the procedure then shut down the UPS immediately and follow trouble shooting
     charts.

2.3.2 Initial condition

  1. UPS has been installed in all respects and all the necessary internal settings
      have been done.
  2. The input, bypass and battery isolators are open.
  3. MCB’s ‘S7’ & ‘S8’ are in OFF position.
  4. Switch ‘S2’ is in OFF / STANDBY position
  5. Batteries have been connected to the battery input terminal [Pay attention to the
      polarity of the Battery connection, keeping the battery fuse open]
  6. 3 phase input supply has been connected with proper phase sequence.

2.4 UPS Startup Process (For single Module)

                Action                                                Results
 1. Remove the UPS front panel

 2. MCB’s ‘S7’, ‘S8’ are in OFF mode.

 3. Ensure that run stand by switch ‘S2’ on
    rear side of the unit is in ‘OFF’ position.

 4. Ensure that UPS input supply, bypass
    and battery supply cable are connected
    but there is no power given to UPS.



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Installation and Maintenance Manual                                      S400D-230/110V UPS

5. Select F1, F2 battery fuses, F3 bypass
   fuse according to the rating of the UPS.

6. Switch on 3 phase input mains supply,
   also switch on the 3-phase input MCB of
   UPS.

7. Switch ON ‘Run standby switch’ ’S2’ on
   rear of the unit.                                Hooter Sounds and LCD display will turn
                                                    on. "Initialising S400D" will appear, followed
                                                    by Default screen. Input LED will glow.
8. Connect multimeter across the
   upper terminals of Battery fuse                  Rectifier will turn On. Rectifier LED on
   switch on the front side of the UPS.             LCD display will glow.
   Remove Top panel of the UPS Unit.
   Locate Micon board and Switch ON
   rectifier switch ‘SW3’. Hear turn ON
   sound of battery Contactor. At the
   same time monitor the soft start DC
   bus voltage, it should not increase
   beyond 356±1% VDC.

9. Check the polarity of Battery
   terminals, and the UPS Battery
   terminals With Multimeter. Ensure
   positive is connected to positive and
   negative is connected to negative
   terminal. Switch ON the Battery
   isolator.

10. Close Battery Fuse F1, F2. By DC
   clamp    meter    measure     battery            On LCD display, Inverter LED and Inverter
   charging current in battery cables, it           Load LED will glow. Output KVA, Voltage &
   should not be more than 3.0A                     frequency will be displayed on LCD display
   (Factory set).                                   in main screen.

Note: Set Battery charging current as per AH
    capacity of the Battery.

11.     Connect multimeter across the
      OUTPUT terminals of the UPS.
      Ensure the polarity. Switch ON the
      Inverter Switch ‘SW4’ on Micon
      Board. Inverter will turn ON.

12. Check Output voltage, it should not
   increase beyond 235VAC/115VAC. If
   necessary set this voltage to 230V/
   110V by R284 on the Micon board.

13. Close Bypass Fuse (& Switch ON
   Bypass MCB ‘S6’ if it is present),
   switch ON bypass supply.
    (Note: In case of 20KVA UPS systems fuse is
    mounted on the Base instead of fuse holder).
                                                    Inverter will get synchronized with Bypass.


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Installation and Maintenance Manual                                 S400D-230/110V UPS

 14. Locate Micon board & Switch ON             Bypass LED on LCD display will glow.
    Bypass Switch ‘SW5’.

 15. By multimeter check is there any
    short circuit at load side.
                                                Output KVA, Voltage & frequency will be
 16. Connect AC clamp meter in the load         displayed on LCD display main screen.
    cables. Switch ON the MCB ‘S7’,
    Load will be connected to the UPS.
    Check the load current.

 17.     Check Input, Output. Bypass
       voltage & current readings on LCD
       Display. If necessary, set the output
       voltage by preset R244A and output
       current by preset R267A on Micon
       board.

 18.     To check battery connections,
       switch OFF 3 phase input supply.
       Check inverter is running on battery     On LCD Display, input & rectifier LED will
                                                be switched OFF and battery LED will glow.
 19. Check UPS output voltage & current
    on LCD display when UPS is running
    on battery.


 20. Switch ON 3-phase input again.
    Check battery current by DC clamp
    meter again. It should not be more          On LCD Display, Input & rectifier LED will
                                                glow.
    than set value.

2.5 Load Power Down / Up Procedure:

2.5.1 Load power down procedure (for the single module)

Note: You should follow this procedure if you want to shut down your load for a
short period or at the end of working day.

                   Action                                         Response
1. Open the front cover of the UPS

2.    Put Switch the MCB ‘S7’ in OFF
     position.                                  Load will turn OFF

3. Switch OFF ‘ON\STANDBY’ switch‘S2’.
                                                Inverter, bypass & load will turn OFF.
4. Close the front cover of UPS




2.5.2 Load power up procedure (for single module)



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                Action                                            Response
1. Switch ON ‘ON\STANDBY’ Switch ‘S2’.            Inverter, bypass & load LED will glow.

2. Open the front cover of UPS. Switch
   ON the MCB ‘S7’.
                                                  Load will be connected to the UPS.
3. Close the front cover of UPS.

2.6 UPS Shut Down Procedure (for Single Module)
Following steps are to be followed if you want to shut down the UPS.

               Action                                             Response
1. Open front panel. Switch OFF MCB               Load will turned OFF.
   ‘S7’.

2. Remove the UPS Top cover locate
   Micon Board, switch OFF SW5. Bypass
   will be switched OFF.                          On LCD display Bypass LED will turn OFF.

3. Switch OFF inverter switch ‘SW4’ on            On LCD display inverter & inverter load
   micon      board.    Inverter     will   be    LED will turn OFF.
   switched OFF.
   Note: inverter & Bypass can be switched OFF
    only by switching OFF STANDBY switch S2
   mounted on the backside of UPS. (no need to
   follow steps 2,3).

4. Switch OFF rectifier switch ‘SW3’ on
   Micon board. Rectifier will be switched        On LCD Display the rectifier LCD will be
   OFF.                                           turned OFF

5. Switch OFF 3-phase input supply&
   bypass supply. Open the input                  ON LCD Display input LED will turn OFF
   breaker of UPS. Also open bypass
   fuse switch F3.

6. Open the battery fuse F1, F2 LCD
   Display will be switched OFF.

7. Close the front cover of UPS.




2.7 UPS Startup Procedure [for (1+1) parallel module]


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Note 1: Switch ON the UPS as per start up procedure mentioned in section 2.4 for single module.

Note 2: Switch OFF the UPS individually as per UPS shut down procedure mentioned in section 2.6 for
single module.

After ensuring the above procedure following steps are to be followed,
                  Action                                   Response
1. Switch OFF Load Externally (by load
     breaker).

2. Do not Switch ON the MCB ‘S7’.

3.     Locate parallel Interface board
     100216120044       at   the   backside
     (inside the box) of the UPS I &
     Dummy        Interface      Board     -
     100204120018 at the backside of the
     UPS II. Connect paralleling flat cables
     (supplied along with UPS system) one
     end to parallel interface boards
     connector CN2 of UPS I. Connect
     other end of the flat cable to Dummy
     interface boards connector CN2 of
     UPS II.

4. Switch ON 3-phase power supply at a
    time to both the UPS (UPS I & UPS                  On LCD Display Input LED of both the UPS
    II).                                               will turn on.

5.    Follow single module switch ON
                                                       On LCD display in OPERATION – UPS MODE
     procedure to switch on UPS I. As the
                                                       menu, Display will show UPS I & II are
     UPS I turns ON, follow same
                                                       paralleled. Master UPS will be synchronised to
     procedure to turn ON UPS II. Keep                 Bypass & slave UPS will be synchronised to
     battery fuses (F1, F2) open. Check                Master.
     voltage between UPS I o/p L (U2) and
     UPS II o/p L (U2). It should not be
     more than 6VAC. If necessary set o/p
     voltage of UPS I & II to 230/ 110(in
     case of S400D, 110V UPS) VAC to get
     this value less than 6V.

6. If the voltage difference is less than
    6V then Switch OFF UPS I & then UPS
    II as per the single module switch
    OFF procedure.

7. Connect the O/P shorting cables one
   end to output terminal U2-N2 of UPS
   I & the other end to the output
   terminal    U2-N2    of    UPS    II
   respectively.

8. Connect True RMS AC clamp meter in
   Output shorting cable.


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9.    Switch ON 3 phase power supply at
     time to both the UPS (UPSI & UPS II).

10. Follow single module switch ON
   procedure to switch ON UPS I. As the
   UPS I turns ON, follow same
   procedure to turn ON UPS II. At the              On LCD display in OPERATION – UPS MODE
   same time monitor the circulating                menu, Display will show UPS I & II are
   current in the Output shorting cable.            paralleled. Master UPS will be synchronised to
   It should not be more than 10% of                Bypass & slave UPS will be synchronised to
   full load current (for 10KVA, 230V <             Master.
   4.3A & for 20kVA, 230V
Installation and Maintenance Manual                                    S400D-230/110V UPS

      of UPS I & then of UPS II. This will
      switch OFF Inverter & Bypass but
      battery charger will remain ON to                 Inverter & bypass LED of UPS I & UPS II will
                                                        turn OFF.
      charge the batteries.

4.     Close the front cover.
      Note: This will continue battery charging.

2.8.2 Load power up procedure

                    Action                                              Response
1.    Remove front cover of both the UPS.               Inverter & bypass LED of UPS I & UPS II
      Switch ON / STANDBY Switch ‘S2’ of                will turn ON.
      UPS I & then of UPS II. UPS I & UPS
      II turns ON.

2. Switch ON the MCB ‘S7’ of UPSI.
   Check total LOAD will be on UPS I.                   Inverter load LED of UPS I will turn On.

3.     Switch ON the MCB ‘S7’ of UPS II.
      Check 50% load sharing between UPS
      I & UPS II.

4.    Close the front cover.

                                                        Inverter load LED of UPS II will turn On.


2.9 UPS Shutdown Procedure for (1+1) Parallel Systems

Following steps are to be followed if you want total shut down of the UPS.

                   Action                                                 Response
1.    Remove top & front cover of both the
      UPSI and UPS II.

2. Switch OFF MCB ‘S7’ of UPSI. Check
   total LOAD will transfer to UPS II.
                                                        Inverter load LED of UPS I will turn OFF

3. Switch OFF MCB ‘S7’ of UPSII. Check
   total load will be switched OFF.

4. Locate Micon Board. Switch OFF ‘SW5’                 Inverter load LED of UPS II will turn
      “Bypass    Switch” on Micon Board of              OFF.
      UPS I.     Switch OFF SW4 “Inverter
      Switch”    on Micon Board of UPS I
                                                        On LCD Display Bypass LED of UPS I
      Inverter   will be Switched OFF.
                                                        will turn OFF.
5.     Switch OFF ‘SW3’ “Rectifier Switch”
                                                        On LCD display Inverter LED of UPS I
      on Micon Board of UPS I Rectifier of              will turn OFF.
      UPS -I. Rectifier will be switched OFF.

6.     Repeat same procedure for UPS II.                On LCD Display Rectifier LED of UPS I
                                                        will turn OFF.
7.     Switch OFF ‘S2’ on the backside of


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Installation and Maintenance Manual                                S400D-230/110V UPS

      both the UPS. Switch OFF Input/
      bypass supply of both the UPS.

8.    Open fuses F1, F2 and F3 (& bypass
      breaker ‘S6’ in case S410D-110VAC)
      of both the UPS.

9.    If required remove parallel flat cable        LCD Display of both the UPS will be switched
      between UPS I & UPS II.                       OFF

10. Close top & side covers of both the
    UPS.
   Note:For 20KVA since bypass fuse is mounted
         on Fuse Base, Switch OFF Bypass
breaker.


2.10 Alarms and Indications
What follows is a description of the status of the LED’s for various state of operation
of the UPS. Do note that the verbose description of each of the UPS status is
displayed on the LCD screen.

2.10.1 Normal operation

The LED indications in this mode of operation is as follows
  LED       Name                     Status
   1        Input                   ON
   2        Rectifier               ON
   3        Battery                 OFF
   4        Inverter                ON
   5        Load [Inverter]         ON
   6        Load [Bypass]           OFF
   7        Bypass                  ON/OFF
   8        Alarm                   OFF

Do note that in this case the Bypass LED state depends on the status of the bypass
and in no way poses a problem to the load.

Parameters such as the output voltage, load and battery charge status can be read
OFF the LCD display.




2.10.2 Mains failure


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The LED indications in this mode of operation is as follows

   LED                Name               Status
   1                  Input              OFF
   2                  Rectifier          OFF
   3                  Battery            ON
   4                  Inverter           ON
   5                  Load [Inverter]     ON
   6                  Load [Bypass]      OFF
   7                  Bypass             ON/OFF
   8                  Alarm               ON

There are two cases of mains failure –

1. If the UPS looses mains supply at the input, LED1 will go OFF.
2. The mains voltage goes out of the acceptable input voltage specification the input
LED will flash.

Both these conditions have to be considered as mains failure since in both the cases
the input supply is not deemed it for rectification as a result the rectifier will be
switched OFF and the inverter will start supplying the load power by taking the
battery power as the input supply source.

In both the above conditions a reset table audio alarm will be sounded.

Here again the status of the Bypass LED depends on the presence or absence with in
specification of the bypass supply. Do note that if the bypass supply is not present
then the load power will be shutdown if the mains power fails to return before the
batteries gets fully discharged.

The beeping rate will increase as soon as the backup time reaches the set battery
low time limit. As soon as this stage is reached you should immediately save your
data and shutdown all the connected loads, because soon the battery will reach the
end of discharge limit and shutdown the inverter.

2.10.3 Other fault or alarm conditions

Fault conditions are those which has hindered the normal operation of the UPS e.g.
rectifier failure or inverter failure etc.

Alarm conditions are those conditions which do not affect the operation i.e. continued
supply of load power, of the unit immediately but which may lead to the cause of
disruption of load power, e.g. mains failure.

In the case of S400D all these conditions are displayed on the LCD panel in the
default screen. In case of multiple alarm or fault condition you can browse through
the same using the UP/DOWN cursor keys.




2.11 Operator Trouble shooting Guide

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The following section will give you a detailed interpretation of the status indicated by
the LED and LCD display and the action to be carried out if the same is encountered.
In any case seek qualified assistance - in the first instance this should be sought
from the site engineer who will then contact the nearest ENP Customer support
center for further assistance.

The front panel display consisting of the LED mimic and the LCD display act as a
excellent tool for diagnosing the present status of the system.
 Lets start with the LED display.




CHAPTER 3

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Installation and Maintenance Manual                           S400D-230/110V UPS

MAINTENANCE




In this chapter we will have a look at the various issues involved in the maintenance
of the S400D unit. Maintenance of any unit ensures that you get the maximum out of
the equipment and prevents any last moment crisis. The maintenance routine on the
S400D unit can be differentiated in to the following categories based on the time
interval between successive maintenance routine.

   • Daily checks
   • Monthly checks
   • Scheduled maintenance

3.1 Daily or Routine Checks
Although the UPS is maintenance free the following checks will ensure the effective
and trouble free working of the UPS.

    • Ensure that the ventilation space around the front and back of the UPS is not
    obstructed.
   • Check that the ambient temperature of the room is with in 40 degree centigrade
    and that the room is well ventilated and dust free.
   • Check for any fault indications on the LCD/LED display. In case of any refer to
    the user manual or call for assistance.




3.2 Monthly Checks

In this case carry out all the steps as mentioned in the above section – 3.1 Daily or
routine checks and then carry out the following steps.

When the UPS is fully loaded log the UPS output voltage and load current. This will
help in detecting any output voltage variation and will also help in keeping a track of
the output load thus preventing any in-advert ant overload. In case of a variation in
output voltage outside the specified limit of the S400D unit contact the nearest ENP



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representative immediately. In case of a increase in load, find out the cause for the
increase in load and whether the load qualifies to be put at the UPS output.

3.3 Scheduled Maintenance Checks




• Before shutting down the system note down the output voltage, frequency and
load on the unit.

• If any fault or warning conditions are found being displayed on the LCD/LED
display serve the same before proceeding with the maintenance of the UPS.

• Shutdown the UPS following the recommended shutdown procedure. (refer section
2.6 or 2.9)

• Gain full access to the UPS PCB compartment at the top and the power
compartments by removing the front top and side covers.

• In case the load is not being supplied via the maintenance bypass disconnect the
input, bypass and battery power connections in order to ensure that the UPS is
totally isolated. If the load supply is being supplied via the maintenance bypass
isolate the UPS from the mains using the input MCB, bypass and battery fuse holder.
Double check the same using a multi-meter.

• Carry out a through visual examination of the UPS power component and
subassemblies, pay particular attention to the following:

     o Electrolytic capacitor : Check for signs of leakage or buckling.
     o Magnetic components : Check for signs of overheating, security      of fixture
        and signs of de-lamination.
     o Cables and connections : check all cables for chaffing, fraying or signs of
        over heating. Also check that all cable connections are tight and all printed
        circuit board connectors are secure.
     o Printed circuit board : Check the cleanliness and integrity of the circuit
        boards and replace if any signs of deterioration are found.

• Thoroughly check the batteries paying attention to the following points
   o General condition : Examine the battery case for signs of deformation, cracks
       or general physical deterioration.
   o Cables and connections : Examine the cables for signs of deterioration and
       ensure that all connections are securely fastened.

• If necessary thoroughly clean out the inner sections of the UPS using low pressure
    air to remove any dust or debris.

• Re-assemble the UPS. However keep the top cover open so as to have access to
   the micon board.


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• Follow switch ON procedure to start the UPS (refer section 2.4 or 2.7)

Maintenance log
To be filled on a daily basis

Legend:

Vout: Output Voltage      Vbyp: Bypass Voltage            Mode: DC Bus Mode        Vin:
Input Voltage

Iout: Output Current        Fbyp: Bypass Frequency         Vbat: Battery Voltage    Iin:
Input Current

Fout: Output Frequency     Vdc: DC Bus Voltage            Ibat: Battery Current    Fin:
Input Frequency




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Alarm log
To be filled at the occurrence of an alarm condition

Alarm log no.:

Corresponding Maintenance log no.:

Date:                         Time:

Problem observed:

LED     NAME                                STATUS

  1     INPUT

  2     RECTIFIER

  3     BATTERY

  4     INVERTER

  5     LOAD (INVERTER)

  6     LOAD (BYPASS)

  7     BYPASS

  8     ALARM


PARAMETER                                   VALUE

OUTPUT VOLTAGE

OUTPUT CURRENT

OUTPUT FREQUENCY

BYPASS VOLTAGE

BYPASS FREQUENCY

DC BUS VOLTAGE

DC BUS MODE

BATTERY CURRENT

INPUT VOLTAGE

INPUT CURRENT

INPUT FREQUENCY




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Installation and Maintenance Manual                   S400D-230/110V UPS




LCD ALARM MESSAGE                          YES / NO
MAINS VOLT NOT OK

RECT ANTISAT. TRIP

RECTIFIER OVER VOLT

RECTIFIER SW OFF

DC VOLT HIGH

DC VOLT LOW

INVERTER VOLT HIGH

INVERTER VOLT LOW

INVERTER ANTISAT. TRIP

TRANS-RETRANS FAULT

BYPASS VOLT NOT OK

BYPASS NOT AVAILABLE

BYPASS FREQUENCY BAD

OUTPUT OVERLOAD

O/P OVERLOAD TRIP

OUTPUT SWITCH OFF

FRONT PANEL UPS OFF

UPS REAR SWITCH OFF

HIGH TEMPERATURE

AMBIENT TEMP HIGH

INV/RECT OVER TEMP

UPS IN FREE-RUN

BATTERY TEST FAILED

BATTERY TEST PASSED

BATTERY UNDER TEST

BATTERY PATH OPEN

BATTERY FUSE OPEN

BATT LOW PREALARM

DIAGNOSTIC MODE SET




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