Liebert PB User Manual

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 honoured 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

IMPORTANT

This manual contains information concerning the installation, operation and
maintenance of the Powerbank UPS.

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

This UPS has been designed for Commercial / Industrial use only.

This UPS 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 : [phone]

5828405

Fax : [phone]

5828358

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

@ Copyright 2001 by Emerson Network Power

Unauthorized reproduction prohibited

All rights reserved

ZONAL OFFICES

MUMBAI

B 414-424, Bhaveshwar Arcade,(opp. Shreyas cinema),

LBS Road,Ghatkopar(W), MUMBAI - 400 086

Tel : [phone]

Fax : [phone] Pager : 9623-988 000

Mobile : [phone]

NEW DELHI

18/14, WEA, Pusa Lane, Karol Buag;

NEW DELHI 110 005.

Tel : [phone],

5744774, 5757601 Pager : 9632-100 300

KOLKATA

77 A, Raja Basant Roy Road,

KOLKATA - 700 029

Tel : 033 - 4646387, 4647197

Fax : [phone]

BANGALORE

15-17-19, Sri Lakshmi Complex, 3rd floor;
St. Mark’s Road, BANGALORE - 560 001.

Tel : (080) - 55994543, 5598825, 5581448

Pager : (080) 96239888000 Fax : 080 - 558 8546

EMERSON NETWORK POWER (INDIA) PRIVATE LIMITED

Plot No. C-20, Road No. 19,

Wagle Industrial Estate,
Thane - 400 604, INDIA.

Phone : [phone]

5828405

Fax : [phone]

5828358

REGISTERED AND HEAD OFFICE

BARODA

39/2, Arunodaya Society,
Alkapuri, BARODA-390 005

Tel : [phone], 330383
Fax : [phone], 330383

CHANDIGARH

SCO-198 / 199 / 200,
Sector - 34A, Near Labour Chowk,
CHANDIGARH

Phone : [phone]
Mobile : [phone]

CHENNAI

No. 22, First Floor,
Gopal Krishna Road,
T. Nagar, CHENNAI - 600 017.

Tel : [phone]
Fax : [phone]

COCHIN

Lakshmini No. 36 / 2684,
Veluthamma House, Azad Road,
Kaloor, COCHIN - 682017
Tel : 0484 - 341985
Fax : 0484 - 341986

GOA

622 / A, La Citadel Colony
Dona Paula, GOA - 403 004
Tel : c/o. 0832 - 220 723

GUWAHATI

South Savania, Ashram Road,
Ulubari, GUWAHATI 781 007
Tel : 0361 - 543848
Fax : 0361 - 543270
Mobile : [phone]

BRANCH OFFICES

JAMSHEDPUR

Kashi Kunj, Road No. 2, Gr. Floor
Contractor’s area, Bistupur;
JAMSHEDPUR - 831 001

Tel : 0657 - 437549
Fax : 0657 - 437549

LUCKNOW

206, Sriram Tower, Ashok Marg
LUCKNOW

Phone : [phone]
Pager : 9628 - 555091
Mobile : [phone]

NAGPUR

203, Ganga Apts.,
13, Giripeth
NAGPUR 400 010.

Phone / Fax : 0712 - 540423, 548551

PUNE

B-6, Shri Dwarka co-op. Society,
467/C1, Hare Krishna Mandir Path,
Model Colony, Off University Road,
PUNE - 411006

Tel : 020 - 5676975, 5670709
Fax : 020 - 4004020

SECUNDARABAD

Plot No. 4, Sardar Patel Road
SECUNDARABAD - 500 003.

Tel : 040 - 7717263, 7719196
Fax : 040 - 7806502

Powerbank Online UPS

PB Series - 3kVA/6kVA

User Manual

EMERSON NETWORK POWER (INDIA) PRIVATE LIMITED

5

INDEX

SECTION DESCRIPTION PAGE NO.
1 IMPORTANT SAFETY 6

INSTRUCTIONS

2. INTRODUCTION 8

3. INSTALLATION 10

4. CONTROL & INDICATION 13

5. OPERATING INSTRUCTIONS
A. DETAILED PROCEDURE 16
B. STARTUP PROCEDURE / 18

QUICK REFERENCE

6. TESTING THE UPS 20

7. OPERATION 21

8. MAINTENANCE 22

9. SPECIFICATION OF UPS 24

6

1. IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS ----------

This manual contains important instructions that should be followed
during installation and maintenance of the UPS and batteries. All of
the data contained in this manual is very important to the proper
operation and long term reliability of the UPS. Please read this manual
thoroughly before attempting to unpack install, and operate the UPS.

1.1 WARNING

1. To reduce the risk of fire or electric shock, install UPS and
batteries in a temperature and humidity controlled indoor area
which is free of conductive contaminants.

2. Risk of electric shock, Do not remove cover. No user
serviceable parts inside. Refer servicing to qualified service
personnel.

3. Risk of Electric shock---- Battery circuit is not isolated from ac
input, hazardous voltage may exist between battery terminals
and ground. Test before touching.

4. Risk of electric shock. Hazardous live parts inside this UPS are
energized from the battery supply even when the input ac power
is disconnected.

5. To reduce the risk of fire, replace only with same type and rating
of fuse.

1.1 Important Safeguards

Your UPS has been engineered and manufactured to assure your
personal safety, but improper use can result in potential electric shock
or fire hazards. To maintain the safeguards incorporated in this unit
observe the following basic rules :

* Turn off and disconnect your UPS from the utility before

cleaning. Do not use liquid cleaners or aerosol cleaners. A
damp cloth may be used to remove any dust or smudges which
occur on the outer surface of your UPS.

7

* Do not install or operate your UPS near water.
* Do not locate your UPS on an unstable cart, stand or table.
* Move the UPS and its supporting cart, stand or table with care.

Quick stops, excessive force and uneven surface may cause the
UPS and its support to overturn.

* Openings on the sides of the UPS cabinet must not be blocked

or covered and air flow through the Openings must not be
obstructed.

* Your UPS should be operated only from the type of power

source indicated on the marking label. For operating form
battery power, refer to the operating instructions (Section - 6).

* Follow all warnings and instructions marked on your UPS.
* Do not overload the commercial ac outlet and/or extension wires

used with your UPS.

* Never push objects of any kind into the UPS cabinet opening or

spill liquid of any kind on your UPS.

* Do not attempt to service the UPS yourself, as there are no

user serviceable components inside. Refer all servicing to
qualified service personal.

Turn off and disconnect your UPS from the utility, and contact qualified
service personal under the following conditions :-

* If liquid has been spilled on the UPS.
* If the UPS has been exposed to rain or water.
* If the UPS does not operate normally by following the operating
instructions.
* If the UPS has been dropped or the cabinet has been damaged.
* When the UPS experiences a distinct change or degradation of
service.

8

2. INTRODUCTION

2.1 Purpose of your Uninterruptible Power System

(UPS)

This Uninterruptible Power System is designed to provide a continuous
supply of usable 220 Volt AC as power to computer and other
electronic equipments during irregularities or failures of commercial AC
power. The UPS protects against AC power line irregularities such as
blackouts, sags, spikes and electromagnetic and radio frequency
interference.

When commercial AC line voltage levels are acceptable, the UPS
operates with very high efficiency, filters noise and spikes before the
power is delivered to its load (s). Should the commercial AC
experience irregularities or fail completely, the UPS supplies a
continuous sine-wave AC load power by utilizing the battery-fed
inverter. The UPS will supply a load of 3000/5000/6000VA UPS from
its external battery bank. The UPS provides AC power protection,
allowing continued operating though most commercial power
disturbances and an opportunity to secure data and safely shut down
systems in the event of an extended outage.

2.2 FEATURES OF THE UPS

The UPS system is designed to provide commercial AC power
protection for computers, peripherals and equipment used in business,
office and laboratory environments. Their performance and features
have been designed to ensure the utmost in AC power protection for
the load (s) as well as ease of use and unobtrusive operation. The
features include :

* Detection of AC utility blackouts and sags
* Spike suppression
* Attractive office styling
* Automatic restart after low battery shutdown
* Easily accessible front panel controls
* Inverter overload protection
* Computer interface card
* Audible alarm
* Cold-start feature
* Optional shutdown software support.
* Built in input over voltage protection

9

2.3 Design Concept

The figure below shows the block diagram of the UPS.

BYPASS

#
INPUT RECTIFIER INVERTER STATIC SW OUTPUT TO
CRITICAL LOAD

ISO
TXR CHARGER

# - This shorting link is removed when connected
with separate bypass source.
BATTERIES

The input to the UPS is 230 V, single phase supply. This is converted into DC
power by the rectifier circuit for the inverter. The inverter in turn converts this
DC power into AC for the critical loads.

The batteries are independently charged from the input AC. In the event of
loss of input AC, the batteries takes over and feeds the inverter.

The static switch serves as a dynamic bypass and connects the input /
bypass supply in the event of inverter failure or overload.

10

3. INSTALLATION

WARNING : IMPROPER INSTALLATION WILL NULLIFY

WARRANTY

3.1 Unpacking and Inspection

When unpacking the UPS shipping carton you will find the following contents
and enclosed in a waterproof bag.

* The UPS itself
* User Manual

The spares part consists of the fuse for replacement when necessary.
Remove the unit from its shipping carton and examine it for damage or
moisture. Do not try to operate the UPS if it appears damaged. Save the
original shipping carton and contact your nearest sales office for instructions.

3.2 Locating the UPS

The UPS is designed to be a free standing unit and is intended to be located
in a controlled environment. Ensure that air flow through the openings is not
hindered or obstructed. Obstructing the free flow of air could cause the UPS
to overheat.

CAUTION : The UPS cabinet is not rated to support weight. Never

stock material or stand on the UPS. Never position the UPS
on its side or upside down.

3.3 CONNECTING THE UPS TO COMMERCIAL AC

IMPORTANT: The UPS shall be installed by qualified technician or

electrician in accordance with the electrical codes for the
area where it is installed and operated.

CAUTION: Ensure that the voltage and frequency of the input

AC power are within the specifications of the UPS
and that the combined loads do not exceed the total
power for the UPS.

11

IMPORTANT: Select the right power wire according to the

recommended wire selection table 1 (Page 14) and
connection diagram as per Figures 1 & 2 (Page 10 & 11).

DANGER : The unit should be supplied by grounded source.

DO NOT operate the unit without ground source.

CAUTION: High DC voltage present on the battery connector

when battery circuit breaker is turned on. DO NOT
touch these battery connectors.

CAUTION: Use digital multimeter (DMM) to make sure the

battery voltage and polarity is correct. Wrong polarity
will cause damage to UPS. For easy identification
the line and positive terminations are red in colour &
neutral and negative are black in colour.

CAUTION: DO NOT connect input wires of UPS to a 15 amp wall

receptacle. The input current requirements of the
UPS exceed the current rating of the wall receptacle.

Connect the UPS to an utility panel whose

current rating is suitable. It is highly recommended
that use of circuit breaker in the wiring system to
gain better protection.

All wiring for the UPS should be done by an qualified

electrical technician since high voltage may be
present.

Ensure that input circuit breaker and battery circuit

breaker are in off position before connecting input
wires and battery wires to UPS.

The connectors are located at the rear section of the UPS inside the lower
rear panel. The protective panel must be removed for access by loosening
the appropriate screws (see Page 13 Fig.3). Table 2 (in page 16) shows
input and output currents for each rated voltage.

Be sure to follow all pertinent local electrical codes when selecting the
wiring.

12

L N N L U4 L N

INPUT BYP. OUTPUT BATTERY

+

-

EXTERNAL CONNECTION APPANGMENT

SHORTING LINKS

FIG 1 : COMMON BYPASS ARRANGEMENT

L N N L U4 L N

INPUT BYP. OUTPUT BATTERY

+

-

FIG 2 : SEPARATE BYPASS ARRANGEMENT

13

4. CONTROLS & INDICATIONS

Fig. 3 (Page 13) illustrates the control, indications and terminals on the UPS, also
explained in the following paragraphs :-

A. AC IN
This indicator illuminates when the incoming utility power is available.
B. FAULT
This indicator illuminates under following conditions :-

1. D.C. under voltage.

2. Inverter output under voltage.

3. Inverter output over voltage.

4. Equipment over temperature.

5. Inverter overload.

An audible alarm will also be ON.
C. BATTERY CAPACITY INDICATOR
This indicates the charging status of the battery bank.
D. INVERTER
This indicator illuminates when the inverter comes ON and inverter voltage is

within the limit.

E. BYPASS
This indicator illuminates when the output power is supplied from the bypass

source.

F. LOAD CAPACITY INDICATOR
Each segment is indicating the load of 20%. The red LED on the last

indicates the overload on the UPS.

G. ON/OFF SWITCH
After turning on the input circuit breaker and the battery breaker, turning ON

the ON/OFF switch will cause the inverter to become ON and transfer of the
load from bypass will take place. Turning-off the ON/OFF switch will cause
the load to be transferred from the inverter output to the bypass source and
inverter will become off.

H. FAN
I STATIC SWITCH AND CHARGER INPUT CIRCUIT BREAKER
J. COLD START SWITCH
See Section 7.3 for the detailed function of this switch.
K. LED
L. EXTERNAL CONNECTION ARRANGEMENT

IP-L, IP-N - Input Connections

U4, N4 - Should be used only if common bypass
Is required.

BYP-L, BYP-N - Bypass connections

OUT-L, OUT-N - Output connections.
BAT+, BAT- - Battery Connections.

M. BATTERY CIRCUIT BREAKER
N. INPUT CIRCUIT BREAKER
O. FUSE This protects the control supply of high line transfer circuit.

14

FHHGG

FHHGG

FHHGGGJHJHJKJKJIUHYGY

FHHGG FHHGG

FHHGGKJHJJ

PS 3000

Liebert

FIG. - 3

POWER BANK UPS SERIES

425

5
0

2

ABC

DEF

G

AGS JHJKJK

AGS JHJKJK

5

5
0

HIJKO

P

N

M

FRONT VIEW

REAR VIEW

15

Table 1-Wire Selection Guide

Note 1. Based on ambient temperature of 30°C(86°F)

2. Rated 0 to 2000 volts; 65° C and 75°C

3. Not more than three conductors in raceway or cable

or earth (directly buried)

ALLOWABLE CURRENT FOR INSULATED COPPER CONDUCTORS
Temp Rating 65°C (104°F) 75°C(167°F)
Wire Type .TW .FEPW .THWE

.UF .RE .XHHW

.REW .USE

Wire Gauge(AWG) Allowable Current (Amps)

14 18 18

12 20 20
10 34 34
8 40 50
6 55 65
4 70 85

Ambient Temp °C(°F) Correction Factors
above

30 (86) to 35 (95) 0.91 0.94
above

35 (95) to 40 (104) 0.82 0.87
Note : For ambient temperature over 30° C, multiply the current

shown above by the appropriate correction factor to determine the
maximum-allowable load current.

16

5. OPERATING INSTRUCTIONS

A. DETAILED PROCEDURE :

* Before proceeding with the operating instructions ensure that your

UPS has been installed correctly.

* The UPS equipment is provided with easy to use power cable snap on

connectors with 1/3 meter cable length. This is to facilitate quick and
easy installation and uninstallation at any point of time. The connectors
provided with the cable have a free end which should be terminated
by suitable lugs as required by the incoming distribution at site. Figure

- 1(Page - 10) shows the wiring diagram for the common bypass
configuration (default). Note the shorting connectors for BYP-L, U4 &
BYP-N, N4. This will connect the incoming utility as the bypass source.
Figure –2 (Page –11) shows the wiring diagram for separate bypass
connection. In this case the shorting connectors are to be removed
and the separate bypass output is to be connected BYP-L, BYP-N.

Caution : Do not connect any wires to U4 -N4 in a separate bypass

configuration. This may lead to short circuit of the input

sources.

* After properly connecting the UPS to the utility, turn on the Input

isolator (on the back panel). The “LINE” and “BYPASS” indicators
should be lighted. This indicates that the UPS is being connected to
commercial AC power. Turn on the battery circuit breaker. This will
commence the battery charging.

* Press the “on/off” switch on the front panel. The inverter indicator will

start illuminating. Both “BYPASS” & “INVERTER” indicator will remain
ON for about 20 seconds. After 20 seconds later, the indicator
“BYPASS” will extinguish, the “INVERTER” indicator will continue to
illuminate. When the unit is in normal operation, the output will be
powered from the inverter of UPS.

* Cut off the input AC power (by turning off a breaker / switch on the

utility line, an audible alarm should start to sound intermittently
indicating a loss of incoming AC power. Now the output is supplied
from the battery source.

* Turn on the input AC power and connect load (s) to the UPS. Make

sure that the total load will not exceed the output rating of the UPS
terminals. The UPS will start beeping constantly and FAULT indicator
light if it is overloaded, overheated or low battery voltage is detected.
Disconnect the load and cut off input AC power in such a situation.
Switch of the battery breaker to isolate batteries.

17

* The UPS audible alarm should sound intermittently when the UPS is

operating from the battery source.

* Connect a normal load to the UPS. Turn on the power switch.

Disconnect the input power. Again the audible alarm should sound
intermittently. When the UPS is under the back-up mode, a battery
capacity sensitive beeping indicates the battery power status. It will
beep continuously when low battery status is reached. The UPS will
automatically shut down in one or two minutes to protect the battery
from over discharging under such condition.

CAUTION: The UPS has been provided with a high line transfer circuit

which will cut off the input to the rectifier if it exceeds 275
Volts AC. After initial start-up keep power continuously to
the unit for at least 24 hours to ensure batteries fully
charged. To ensure charging the batteries, the main circuit
breaker and the battery circuit breaker should be left in the
“ON” position. However, the front panel “ON/OFF” switch
can be used as daily run/standby switch. Note that the
output will still be connected to the bypass supply and
inverter will be off.

STORAGE INSTRUCTIONS :

1. Leave equipment connected to input power and turned on for 24 hours
prior to storage.

2. Turn off the main circuit breaker.

3. Store in a cool, dry environment (Below 80° F / 27°C)

4. Remove from storage and repeat step 1 for every 90 days.

TABLE 2- UPS CURRENT RATINGS

UPS RATING 3 KVA 5KVA 6 KVA

INPUT
VOLTAGE

220V 240V 220 V 240 V 220 V 240 V

INPUT
CURRENT

19 A 17 A 32 A 29.5 A 38.4 A 35.2 A

CABLE SIZE 4 mm sq 4 mm sq. 6 mm sq 6 mm sq. 6 mm sq. 6 mm sq.
OUTPUT
VOLTAGE

220 A 240 V 220 V 240 V 220 V 240V

OUTPUT
CURRENT

13.6A 1.25A 22.75A 20.8A 27.3A 25A

OUTPUT CABLE
SIZE

2.5 mm sq. 2.5mm sq. 4 mm sq 4 mm sq 4 mm sq 4 mm sq

BATTERY
CURRENT

14.5A 14.5A 23.5A 23.5A 28A 28A

BATTERY
CABLE SIZE

4 mm sq. 4 mm sq. 4 mm sq. 4 mm sq. 4 mm sq. 4 mm.sq.

18

a) START UP PROCEDURE - QUICK REFERENCE

STARTING THE UPS ON MAINS

1. Ensure that the input voltage is 230V, 50Hz, single phase.

2. All the wiring connections should be made as under :-

L N N L U4 L N

INPUT BYP. OUTPUT BATTERY

+

-

SHORTING LINKS

3. Initially, connect only the input line, neutral and earth connection.

4. Switch ON the input isolator on the rear panel, the breaker on the left
side as seen from the back of the unit.

5. The fans should start running and the ‘AC’ & ‘BYPASS’ indications on
the front panel should be ON. Please check that two “shorting liks”
BYP-L, U4 & BYP-N, N4 are connected properly. Otherwise, the fans
will not start.

6. Check the DC voltage on the terminal ‘BAT+’ & ‘BAT -’ above (the last
two terminals on the extreme right on the rear panel). The reading on
a DC voltmeter should be greater than or equal to 220 V DC.

a) At this point, the front panel ‘ON/OFF’ switch should be switched ON.

The ‘INVERTER’ LED on the front panel will start glowing gradually to
full brightness. After this action in about 17 seconds clicking sound will
be heard, which will connect the output to the inverter.

b) The battery can now be connected and the battery isolator can be

switched ON now.

19

STARTING THE UPS ON BATTERY (BLACK START)

1. As per the above connection diagram, connect only the battery to the
UPS (Ensure that the batteries are in fully charged condition showing
DC voltage greater than 205 VDC for the entire bank).

2. Switch-on the battery breaker on the rear panel and the front panel
;ON / OFF’ switch. There will be no response from the UPS at this
stage.

3. Now, gently press the red switch on the rear panel. This is black start
switch which is a push button switch. This will initiate the internal
circuitry of the UPS to start on batteries.

4. The response seen from the UPS will be that the ‘INVERTER’ LED will
slowly start to glow. The fans will not start at this instant.
Approximately 17 seconds after this operation a clicking sound of the
relay will be heard. The fan will start to operate and output will be
available from the inverter.

IMPORTANT :- IF THE UPS FAILS TO START BY THE ABOVE

TWO PROCEDURES, THE FIRST LEVEL TROUBLE SHOOTING
WILL BE REQUIRED AS PER THE USER MANUAL.

20

6. TESTING THE UPS

The battery charger board is designed to supply a maximum of 7.5 A
DC charging current. Depending on the externally connected
batteries, the appropriate setting should be done before connecting the
batteries. The battery manufacturer recommends a charging current
which is 10% of the AH capacity rating. Based on this, battery charger
should be set closely to or next higher value to the required battery
charging current.

Remove the screws on sides and rear of the UPS panel to gain access
to the battery charger board. The battery charger board is located
centrally on the top side of the UPS and can be identified by the
heatsinks mounted on it and a cooling fan mounted next to it. The
battery charger board has DIP microswitches with on-off positions as
shown below. The status of these microswitches decides the charging
current for a set of battery bank. A step of 1.5 A is available, hence
current setting of 1.5A, 3A, 4.5A, 6.0A & 7.5A is possible by setting
these microswitches.

For example, if a battery bank of 40 AH is being used, the charging
current will have to be set to 10% of 40 AH, which is 4A. Since the
setting for 4 A is not available , the next setting of 4.5 A which is 3/5
Imax as shown below will have to be set.

This setting will ensure the proper charging of the batteries with built-in
current limit of charger circuit

Danger : The setting of battery charging current is very important

for the externally connected batteries. If this is not done
the batteries may bulge or get damaged due to improper
setting of charging current.

ON

OFF

1

2 3

4

SWITCH STATUS CURRENT SETTING

1, 2, 3, 4 : OFF 7.5 A I max

1, 2, 3, : OFF, 4 - ON 6.0 A 4 / 5 max
1, 2, - OFF, 3, 4, - ON 4.5 A 3 / 5 max
1 - ON, 2, 3, 4 - OFF 3.0 A 2 / 5 max

1, 2, 3, 4, - ON 1.5 A 1 / 5 max

21

7. OPERATION

7.1 Powering UP the UPS

Be sure that the UPS is connected to an acceptable commercial AC power
source. Please refer to the ‘Connecting the UPS to Commercial AC’
guidelines in the “INSTALLATION” section of this manual.
To power up the UPS turn on the Circuit breaker and the battery breaker at
the rear panel. The “LINE” and “BYPASS” indicators will be lighted. Switch
on the front panel “ON/OFF” switch. The “INVERTER” indicator will slowly
light up. After about 20 seconds, a click sound will be heard and the inverter
gets connected to the output terminals. The battery reserve and AC line
voltage are deemed to be acceptable if the front panel indicators indicate the
following :-

* No alarm conditions exist (No audible alarm is heard and the
FAULT LED is extinguished).
* Power is switched on normally (LINE and INVERTER indicators are

lighted).

* Battery reserve power is at or near maximum.
If no fault indicator is lighted upon activating the UPS, it is working normally.

If the FAULT indicator and continuous audible alarm is heard upon activating
the UPS, refer to the ‘MAINTENANCE” section of this manual.

7.2 Powering Down the Load (s) and UPS

CAUTION : Verify the load(s) connected to the UPS have been powered

down (turned off) according to their operating instructions.
Turn off the “ON/OFF” switch will transfer the UPS from the
inverter made to the Bypass mode. Turn off the input &
battery circuit breaker will shut down the UPS completely
and no AC power will be available at the output, thus
isolating the load.

a. Cold Starting the UPS

A User can start the Powerbank UPS, even when the power from utility is not
present. Turn ON battery isolator mounted on the back side and the
“ON/OFF” switch (RED COLOUR) on the front panel. Then push the ‘COLD
START” switch at the back panel and after about one second and the UPS
will start. Turning off the “ON/OFF” switch and/or the battery isolator will turn
off the cold-started UPS.

22

8. MAINTENANCE

8.1 Maintenance Procedure

The unit is designed for easy maintenance. Very little customer maintenance
is required. The following will help to ensure trouble-free operation for several
years :-

1. Vacuum the dust from the ventilation intake.

2. Wipe the cover with a damp cloth.

3. Periodically cut the input AC power to test the condition of batteries

CAUTION: It is recommended to test the battery discharge capability

only after ensuring that the critical load is not delivering
any important function.

8.2 Troubleshooting

The unit can be serviced only by authorized personnel. In case the UPS fails
to operate properly, turn off the unit first and review the following check list.
Be prepared to answer the questions before calling for service.

1. Did you follow the proper operation procedure ?

2. Is the input & battery circuit breaker on the rear panel turned on ?

3. Is the voltage of the utility correct ? Are the input cables tightly
connected to the input terminals and the utility panel? Are the output
cables and battery cables of the Powerbank UPS also properly
connected ?

4. Did a power failure occur just after or before the malfunction was noted
the UPS.

5. Is the fuse on the rear panel blown ? If blown replace it only with the
same type and rating.

6. Did an overload condition occur ? Remove load from the unit and
restart the unit.

After investigation as per above checklist, if the UPS fails to start, carry out
the following test procedure:-

Open the topcover by removing the screws on the sides and rear of the UPS
panel to gain access inside the UPS. Observe carefully for any damage to
IGBTs or other power components. If any abnormal bulge or burnt marks are
observed call up your nearest Sales Office and report the same.

23

If everything appears normal, check for any loose connection of wires. Locate
a fuse mounted on a busbar between the DC capacitors and the IGBTs.
Check for the healthiness of this fuse. If it is faulty, replace the same and
attempt to restart the UPS. Even then if the UPS does not become ON, then
call your nearest Sales office.

After replacement of the fuse, if the UPS becomes on, check for the external
fault which must have caused this failure. After repairing the fault and
ensuring everything is OK, only then attempt to connect the load to the UPS.

8.3 Maintenance of Battery

Servicing of batteries should be performed or supervised by personnel
knowledgeable of batteries and the required precaution. Keep unauthorized
personnel away from batteries.

CAUTION: Do not dispose of battery in a fire. The battery may

explode.

CAUTION: Do not open or mutilate the batteries. Released electrolyte

is harmful to the skin and eyes. It may be toxic.

CAUTION: A battery can present a risk of electrical shock and high

short circuit current.

The following precautions should be taken when working

on batteries :-

1. Remove watches, rings, or other metal objects.

2. Use tools with insulated handles.

3. Wear rubber gloves and boots.

4. Do not lay tools or metal parts on top of batteries.

5. Disconnect charging source prior to connecting or disconnecting
battery terminals.

24

Detailed Technical Specification of Powerbank UPS

Parameter Unit of

Measurement
(UOM)

Specification of

Powerbank

3kVA 5kVA 6kVA

Input Voltage

Volts 220, 1 Phase

Permissible input voltage variation

% ± 25%

Input frequency

Hz 50

Permissible input frequency variation

% ± 10%

Power walk-in

Seconds 17

No. of cells

Nos. 16 Blocks of 12V

Nominal DC bus voltage
Maintenance-free

Vdc 192

Float Charge Voltage

Vdc 220

End of Discharge Voltage

Vdc 170

Ripple voltage on DC
(with battery connected)

% <=1% RMS

Voltage

Volts 220 V, 1 Phase

Frequency

Hz 50

Power rating at 0.7 power factor

KVA 3kVA 5kVA 6kVA

Power rating at unity power factor

KW 2.1 3.5 4.2

Overload at 0.7 power factor

% 50% for 5 seconds

Maximum non-linear load permissible

% 100% with 3:1 Crest

Factor

Voltage stability : steady state

--- ± 1%

Voltage stability :
Transient state
Reset time to within ± 1%

---

milliseconds

± 8%
20

Slew rate

Hz / Seconds 1 Hz/Seconds

25

Parameter Unit of

Measurement

(UOM)

Specification of

Powerbank

3kVA 5kVA 6kVA

Output voltage distortion at

a) Linear load
b) Non-linear load with 3 :1

Crest factor

---

<=3%
<=5%

Accoustic noise dBA <53 <56 <56
Operating temperature Degree C 0 to 40 Degree C
Relative Humidity (RH) % 0 to 95% RH

(noncondensing)
Storage temperature Degree C -20 to +70 Degree C
Height mm

550 (with castor wheel)

Width mm 425
Depth mm 730
Weight kgs 73 93 95
Colour (Powder-coated) --- Structured moon light

grey and dusky blue
Cable entry From rear side bottom

26

IMPORTANT

This manual contains information concerning the installation, operation and
Maintenance of the UPStation. GXT-AV UPS.

All relevant parts of the manual should ne 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.

This UPS has been designed for commercial / industrial use only.

This UPS has not been designed for direct use in any life support appplication.

If you encounter any problem with the procedures contained inthis 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 : [phone]
5828405
Fax : [phone]
5828358

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

@ Copyright 2001 by Emerson Network Power
Unauthorised reproduction prohibited

All right reserved

27

REGISTERED AND HEAD OFFICE

EMERSON NETWORK POWER (INDIA) PRIVATE LIMITED

Plot No. C-20, Road No. 19,

Wagle Industrial Estate,
Thane - 400 604, INDIA.

Phone : (00 91 22) 5807000
5828405
Fax : (00 91 22) 5800829
5828358

ZOLAN OFFICES

MUMBAI

B414,Bhaveshwar Arcade, Opp. Shreyas cinema),

LBS Road, Ghatkopar(W), MUMBAI - 400 086

Tel. : [phone]

Fax : [phone] Pager : 9623-988 000

Mobile : [phone]

NEW DELHI

18/14, WEA, Pusa Lane, Karol Baug;

NEW DELHI 110005

Tel. : [phone]

5744774, 5757601 Pager : 9632-100 300

KOLKATA

77 A, Raja Basant Roy Road,

KOLKATA - 700 029

Tel. : 033 - 4646387, 4647197

Fax : [phone]

BANGALORE

15-17-19, Shri Lakshmi Complex, 3rd floor,

St. Mark’s Road, BANGLORE - 560 001.

Tel. : (080) - 55994543, 5598825, 5581448

Pager : (080) 96239888000

Fax : 080 - 558 8546

28

BRANCH OFFICES

BARODA JAMSHEDPUR

39/2, Arunodaya Society, Kashi Kunj, Road No. 2, Gr. Floor
Alkapuri, BARODA - 390 005 CONTRACTOR’S AREA, Bistupur,
JAMSHEDPUR - 831 001
Tel. : [phone], 330383
Fax : [phone],330383 Tel. : 0657 - 437549
Fax : 0657 - 437549
CHANDIGARH
SCO0198 / 199 / 200, LUCHNOW
Sector - 34A, Near Labour Chowk, 206, Sriram Tower, Ashok Marg
CHANDIGARH LUCKNOW

Phone : [phone] Phone : [phone]
Mobile : [phone] Pager : 9628 - 555091
Mobile : [phone]
CHENNAI
No. 22, First Floor, NAGPUR
Gopal Krishna Road, 203, Ganga Apts.,
T. Nagar, CHENNAI - 600 017. 13, Giripeth
NAGPUR 400 010
Tel. [phone]
Fax : [phone] Phone / Fax : 0712 - 540423,
548551

COCHIN PUNE
Lakshmini No. 36 / 2684, B-6, Shri Dwarka co-op. Society,
Veluthamma House, Azad Road, 467/C1, Hare Krishna Mandir Path,
Kaloor, COCHIN - 682017 Model Colony, Off University Road,
Tel. : 0484 - 341985 PUNE - 411006
FAx : 0484 - 341 986
Tel : 020 - 5676975, 5670709
GOA Fax : 020 - 4004020
622 / A, La Citadel Colony
Dona Paula, GOA - 403004 SECUNDARABAD
Tel. : C/o. 0832 - 220 723 Plot No. 4, Sardar Patel Road
SECUNDARABAD - 500 003.
GUWAHATI
South Savania, Ashram Road. Tel. : 040 - 7717263, 7719196
Ulubari, GUWAHATI 781007 Fax : 040 - 7806502

Tel. : 0361 - 543848
Fax : 0361 - 543270
Mobile : [phone]