Liebert VM12000, VM18000 User Manual

®

UPStation S

Power Protection

User Manual

English

2

SAVE THESE IMPORTANT UPS AND BATTERY

SAFETY INSTRUCTIONS

CONSERVER CES INSTRUCTION. CETTE NOTICE

CONTIENT DES INSTRUCTIONS IMPORTANTES

CONCERNANT LA SÉCURITÉ.

WARNING: Lethal voltages may be present within this
unit even when it is apparently not operating.
Observe all cautions and warnings in this manual.
Failure to do so MAY result in serious injury or death.
Refer UPS and battery service to qualified service
personnel. Keep unauthorized personnel away.
Never work alone.

Clean UPS with only a dry cloth. Do not use liquids or
aerosol cleaning fluids.

Only trained engineers authorized by Liebert should
perform troubleshooting. If the UPS develops a fault,
check the Alarm History and Input Disturbances recorded
in the Event Log (LCD display menu item 3). See Alarm
Messages, Meanings, and Corrective Actions in the
Appendix. Consult Liebert at 1-800-222-5877 for
persistent unresolved problems. Do not use UPS if not
performing to specification. Call Customer Service to
replace fuses and diagnose cause of failure.

Batteries within the UPS provide standby power. During
normal operation, the batteries automatically charge and
the UPS control circuit automatically tests them. The UPS
displays an alarm message if there is a battery charger
problem or if the battery fails a test. Call Liebert at 1-800­222-5877 for battery maintenance or replacement. When
replacing batteries, use the same number and type of
batteries.

Lead-acid batteries contain hazardous toxic materials.
Handle, transport, and recycle in accordance with
federal, state, and local regulations. DO NOT dispose
of batteries by fire; they may explode. DO NOT open
or mutilate batteries; released electrolyte is harmful to
skin and eyes, maybe toxic. A battery presents a risk
of electrical shock and high short circuit current.
Lead-acid batteries present a risk of fire due to
hydrogen gas generation. Observe these precautions
when working on batteries:

• Remove watches, rings, or other metal objects.

• Wear rubber gloves and boots and use tools with

insulated handles. DO NOT lay tools or metal parts
on top of batteries.

• Unplug UPS prior to connecting or disconnecting
battery terminals. Remove battery fuses or open
battery circuit breaker.

• Remove all battery grounds. Contact with any part of
a grounded battery may result in electrical shock.

• DO NOT SMOKE near batteries. DO NOT cause
flame or spark in battery area.

• Touch a grounded metal surface to discharge static
electricity from body before touching batteries.

CAUTION: This device complies with limits for a
Class A computing device, pursuant to Part 15 of
FCC rules. Operating this device in a residential
area is likely to cause harmful interference to
radio and TV reception which the user must
correct at his own expense.

ADVERTISSEMENT: Des pièces sous alimentation seront

laissées sans protection durant ces procedures
d’entretien. Un personnel qualifié est réquis pour effectuer
ces travaux.

Les fusibles à c.c. de la batterie d’accumulateurs opérent
en tout temps à la tension nominale. La presence d’un
fusible à c.c. brûlé indique, un problème serieux. Le
remplacement de ce fusible, sans avoir determine les
raisons de la defectuosite, peut entrainer des blessures ou
des dommages serieux a I’équipement. Pour assistance,
appeler le departement de service à la clientele de Liebert.

Les accumulateurs plomb-acide contiennent de la matière
comportant un certain risque. Les accumulateurs doivent
être manipulés, transportés, et recyclés en accord avec
les lois fédérales, provinciales, et locales. Parce que le
plomb est une substance toxique, les accumulateurs
plomb-acide devraient être recyclés plutôt quéliminés. II
ne faut pas brûIé le ou les accumulateurs. L’accumulateur
pourrait alors explosé. II ne faut pas ouvrir ou
endommager le ou les accumulateurs. L’électrolyte qui
pourrait s’en échapper est dommageable pour la peau et
les yeux. Un accumulateur représente un risque de choc
électrique et de haut courant de court-circuit. Les
accumulateurs plomb-acide présentent un risque
d’incendie parce qu’ils génèrent des gaz à I’hydrogène.
Lorsque des accumulateurs son manipulés, les mesures
préventives suivantes devraient être observées:

• Retirer toutes montre, bagues, ou autres objets
métalliques.

• Porter des gants et des bottes de caoutchouc et
utiliser des outils avec manchon isolé. Ne pas
déposer les outiles ou les pièces métalliques sur le
dessus des accumulateurs.

• Interrompre la source de charge avant de raccorder
ou de débrancher les bornes de la batterie
d’accumulateurs.

• Déterminer si I’accumulateur est mis à la terre par
erreur. Si oui, défaire cette mise à la terre. Tout
contact avec un accumulateur mis à la terre peut se
traduire en un choc électrique. La possibilitié de tels
chocs sera reduite se de telles mises à la terre sont
débranchées pour la durée de I’installation ou de
I’entretien.

• NE PAS FUMER lorsque près des accumulateurs. NE
PAS produire de flammes ou d’étincelles près des
accumulateurs.

• Décharger toute électricité statique présente sur votre
corps avant de toucher un accumulateur en touchant
d’abord une surface métallique mise à la terre.

L’électrolyte est un acide sulfurique dilué qui est
dangereux au contact de la peau et des yeax. Ce produit
est corrosif et aussi conducteur électrlque. Les procédures
suivantes devront être observées:

3

• Porter toujours des vêtements protecteurs ainsi que
des lunettes de protection pour les yeux.

• Si I’électrolyte entre en contact avec la peau, nettoyer
immédiatement en rinçant avec de I’eau.

• Si I’électrolyte entre en contact avec les yeux, arroser
immédiatement et généreusement avec de I’eau.
Demander pour de I’aide médicale.

Lorsque I’électrolyte est renversée, la surface affectée
devrait être nettoyée en utilisant un agent neutralisant
adéquat. Une pratique courante est d’utiliser un mélange
d’approximativement une livre (500 grammes) de
bicarbonate de soude dans approximativement un gallon
(4 litres) d’eau. Le mélange de bicarbonate de soude
devra être ajouté jusqu’à ce qu’il n’y ait plus apparence de
réaction (mousse). Le liquide résiduel devra être nettoyé
a I’eau et la surface concernée devra être asséchée.

4

INTRODUCTION .......................................6

Features ................................................................6

System Shutdown..............................................15

Manual Off........................................................15

Remote Emergency Power Off..........................15

UPS Alarms ........................................................15

Standard System Components ............................... 6

Optional System Components ............................ 6

UNLOADING THE UPS.............................6

INSTALLATION.........................................7

3.5-6 kVA Connections ........................................7

Input...................................................................7

Output................................................................7

3.5-6 kVA Start-up Checklist................................ 8

8 - 18 kVA Connections .......................................9

Input...................................................................9

Output................................................................9

8 - 18 kVA Start-Up Checklist ............................10

OPERATION............................................11

Control Buttons................................................. 11

LCD Display..................................................... 11

Initial Start-Up .................................................. 11

Table #2 Factory Default Settings..................... 12

OPTIONS ................................................ 16

Distribution.........................................................16

Configurable Distribution (CD) ..........................16

Load Modules...................................................17

POWER MANAGEMENT.....................................25

Getting Started .................................................25

Power Management Programming Elements ....26

Loads ...............................................................26

Events..............................................................26

Power Management Sample #1........................27

Power Management Sample #2........................27

Remote Emergency Power Off (REPO) Cable...28

Communications Options..................................28

SiteNet 1 Shutdown Interface Kits.....................28

SiteNet 2 Power Surveillance ............................28

SiteNet SNMP (Simple Network Management

Protocol)...........................................................28

Terminal/Modem Connection............................28

RS-232 with User-Configurable Relays.............29

Cables..............................................................29

External Battery Cabinets..................................30

System Start-Up................................................. 14

Manual Restart after Manual Off....................... 14

Auto-Restart..................................................... 14

Manual Restart after Low Battery Shutdown or

REPO............................................................... 14

Normal Operation............................................... 14

Battery Operation............................................... 14

On Battery........................................................ 14

Battery Recharge ............................................. 14

Bypass Operation.............................................. 14

Auto-Bypass..................................................... 14

Manual Bypass................................................. 14

Maintenance Bypass Operation ........................15

on 3.5 - 6 kVA Units............................................. 15

Transferring from UPS Operation to Maintenance

Bypass Operation............................................. 15

Transferring from Maintenance Bypass Operation

to UPS Operation .............................................15

ROUTINE MAINTENANCE..................... 31

LIEBERT UPSTATION S™

SPECIFICATIONS...................................31

APPENDIX ..............................................32

NEC Wire Gauge Chart ....................................32

3.5 kVA Battery Run Times...............................33

6 - 8 kVA Battery Run Times .............................34

10 - 12 kVA Battery Run Times.........................35

15 - 18 kVA Battery Run Times.........................36

Alarm Messages, Meanings, and Corrective

Actions .............................................................37

5

BTU / HR

* For planned future upgrade, initially size wiring and overcurrent protection for future upgraded size.

¶ Extended run times available with optional external matching battery cabinets.

§ 8-18 kVA units accept optional 208V 3-phase 4-wire plus ground input. Full load current shown is based on UPS operation in bypass mode. In bypass mode, the UPS draws single phase current from the source, regardless of single or 3-phase input configuration.

† Full load current is the maximum amperage that each phase conductor can carry (L1-L2, L1-N, or L2-N), while not exceeding the total watt or kVA rating of the system.

Liebert UPStation S™ SITE PLANNING DATA

at Full Load

Heat Rejection

2170

2411

3616

4520

5062

7593

Weight

Including

270

Battery (lbs.)

Mechanical Data

WxDxH

in Inches

Dimensions

UPS Output

Circuit Breaker

Full Load

Currnet†Amps

AC Output

Voltage VAC

3-Wire +Ground

Battery

Time Full / Half

Internal Battery

9x31x29

30 A

(Amps)

23 A

22 A

21 A

200/100

208/120

220/110, 220/127, 220 L-N

12 /29

Load¶ Minutes

20 A

230/115

270

9x31x29

30 A

19 A

25 A

25 A

25 A

240.120, 240 L-N

200/100

208/120

220/110, 220/127, 220 L-N

11 / 25

25 A

25 A

40 A

39 A

230/115

240.120, 240 L-N

200/100

208/120

560

18x27x29

100 A

36 A

35 A

33 A

220/110, 220/127, 220 L-N

230/115

240.120, 240 L-N

17 / 35

560

9x31x29

100 A

50 A

48 A

46 A

44 A

42 A

200/100

208/120

220/110, 220/127, 220 L-N

230/115

240.120, 240 L-N

11 / 28

560

9x31x29

100 A

60 A

58 A

55 A

52 A

50 A

90 A

200/100

208/120

220/110, 220/127, 220 L-N

230/115

240.120, 240 L-N

200/100

10 / 24

780

27x27x29

125 A

87 A

82 A

78 A

75 A

208/120

220/110, 220/127, 220 L-N

230/115

240.120, 240 L-N

10 / 27

d External

Protection*

Overcurrent

Recommende

Amps

Full Load

Current †

AC Input

Voltage VAC

3-Wire + Ground §

Upgrade

Maximunm

Rating (kVA)

Power Rating

kVA/ kW

Power Rating

30 A

(Amps)

22 A

21 A

20 A

19 A

18 A

200/100

208/120

220/110, 220/127, 220 L-N

230/115

240/120, 240 L-N

5.0

5.2

5.5

5.8

6.0

4.5 / 3.6

30 A

24 A

24 A

22 A

200/100

208/120

220/110, 220/127, 220 L-N

60 A*

21 A

20 A

36 A

230/115

240/120, 240 L-N

200/100

N/A

5.0 / 4.0

5.2 / 4.0

5.5 / 4.0

5.8 / 4.0

6.0 / 4.0

60 A*

60 A*

50 A*

50 A*

70 A*

70 A*

70 A*

60 A*

35 A

33 A

31 A

30 A

45 A

43 A

41 A

39 A

208/120, 208/120 3 Ph. §

220/110, 220/127, 220 L-N

230/115

240/120, 240 L-N

200/100

208/120, 208/120 3 Ph. §

220/110, 220/127, 220 L-N

230/115

12.0

8.0 / 6.0

12.0

10.0 / 7.5

80 A

80 A

80 A

60 A*

38 A

240/120, 240 L-N

70 A

50 A

49 A

46 A

44 A

200/100

208/120, 208/120 3 Ph. §

220/110, 220/127, 220 L-N

230/115

N/A

12.0 / 8.4

70 A

125 A

120 A

120 A

42 A

76 A

72 A

69 A

240/120, 240 L-N

200/100

208/120, 208/120 3 Ph. §

220/110, 220/127, 220 L-N

N/A

18.0 / 12.6

110 A

110 A

66 A

63 A

230/115

240/120, 240 L-N

6

INTRODUCTION

FIGURE #1

UNLOADING THE UPS

The Liebert UPStation S™ Uninterruptible power supply
(UPS) system protects valuable equipment, data, and
processes from utility power disturbances. The high­performance, on-line, microprocessor-controlled design
ensures clean, regulated, sinewave power to loads
regardless of utility power fluctuations. An internal battery
provides power to loads during utility power outages.

This highly intelligent UPS alerts you to unusual
circumstances, or configure the UPS to serve as a source
of information and a power control base for specific
applications. Programmable parameters, computer
interfaces, and several network control features (remote
status/control, Power Management, event logging, and
others) provide maximum application flexibility.

Features

• Input power factor correction (PFC) makes optimal
use of utility power.

• Input current total harmonic distortion (THD) of less
than 5% minimizes noise on the branch circuit and
reduces neutral currents.

• Power Output Distribution (unit) facilitates UPS repair
or battery replacement without disrupting power to the
load on 3.5 - 6 kVA units

• Temperature-compensated battery recharge for
longer battery life.

• Programmable voltage and frequency.

• Tower configuration with small footprint.

• Two-phase pulse width modulated (PWM) inverter

with isolated neutral.

• UL 1778 and CSA 22.2 listed for user safety.

Refer to the figures below:

1. Remove shipping bands (A) and edge protectors (B).

2. Remove polybag and box.

3. Remove bracket mounting bolts (C) from pallet.

4. Knock out shims (D) with hammer and screwdriver.

5. Thread leveling feet (E) flush with unit bottom.

6. Remove front pallet hex bolts (F). Remove the front
skid (G).

7. Slowly tilt the unit forward and roll it off the pallet.
CAUTION: The units are heavy. Use at least two
people for this step.

Unbolt shipping brackets (H) from unit. Inspect unit.
Verify model number and check for damage. Make sure
UPS Input, Output, and Battery circuit breakers are Open
(OFF).

Standard System Components

• Integral Battery

• LCD Display for comprehensive user indications and

controls

• Audible Alarm

• Remote Emergency Power Off (REPO) capability

• Auto-Restart capability

• Automatic Bypass

Optional System Components

• Communication Interfaces: SiteNet 1 Shutdown Kits,
SiteNet 2 Power Surveillance, and SiteNet SNMP

• External battery cabinets

• Power Management for individual load control.

Figure #2

Side View with

Mounting Bracket

Detail

7

INSTALLATION

3.5-6 kVA Single Line Diagram

L1, L2

MAINT.

BYPASS

SWITCH

POD

TO EXTENDED

CABINETS

DB25

Read Operation section to understand user controls and
displayed messages before beginning.

Operate UPS in a clean, controlled environment with
adequate airflow.
Exposure to excessive dirt or dust adversely affects UPS
operation.

Internal fans cool the UPS. The unit intakes air at the front
and exhausts it out the rear. Allow at least one foot of
space around UPS for air circulation. Operate UPS within
specified temperature and humidity limits.

Allow only authorized personnel to service UPS. Allow a
minimum of 3 feet access on both sides for rigid conduit
installations. Units that can be rolled forward for side
service access require no side access in their normal
position. Manual UPS operation and connection to UPS
receptacles requires rear access.

3.5 - 6 kVA Liebert UPStation S™ systems include the
UPS and the AC unit. The unit provides connection to
both utility power and UPS output power through the use
of a simple Maintenance Bypass Switch. See the

Operation section for instructions on Maintenance
Bypass Switch use.

Input

The input power cord includes a NEMA L14-30 plug. The
cord is six feet long and rated for 30 Amps. Customer
supplied wiring must include an L14-30 receptacle and a
30 Amp circuit breaker.

Output

The POD contains the output receptacles.

Optional SNMP

Interface

Input Fuses

(30A) (F1,F2)

Communications
Connector
(RS-232, AS/400, LANs)

Variable Speed Fan

3.5-6 kVA Connections

See the figure to the right for connection locations.

CAUTION: A qualified electrician must review and
approve customer-supplied wiring, circuit breaker(s),
power outlet, and intended loads. Ensure correct line,
neutral, and ground connections, and that phase
rotation is phase A leads phase B. See Site Planning
Data and Table NEC Wire Specifications in the
Appendix.

AUTO / MANUAL BYPASS

N

L1, L2

G

SURGE

SUPPRESSION

AND EMI

FILTER

FRONT END CONVERTER

BATTERY

CHARGER

Bypass Switch

REPO Connection

Battery Fuses
(30A) (F3,F4)

Output Circuit
Breaker (30A)

External Battery

Cabinet Connector

3.5-6 kVA

REAR VIEW

INVERTER

INVERTER

L1, L2

N

AUTO / MANUAL

BYPASS

POD Guidepin w/nut

POD Connectors

External Power
Management
Load Module
Communications
Connector

Guidepin w/nut

Caster

EMI

FILTER

N

G

BATTERY

BATTERY

8

3.5-6 kVA Start-up Checklist

1. Remove POD from box. Set aside the two UPS
battery fuses inside the user manual packet for later
installation.

Steps 2 – 4 apply to UPS Hardwire Input / Output
connections ONLY.
For standard plug connections, skip to step 5.

2. Note conduit knockouts on unit side. Remove the
four screws securing the terminal block access cover.

3. Wire UPS input and/or output per NEC (NFPA 70)
and all applicable local codes. Use 75 degrees C
copper wire. See Site Planning Data and Table NEC
Wire Specifications in the Appendix. Note that
terminations used for an L-L-N-G system differ from
those used for an L-N-G system as indicated by the
terminal block labels below.

Terminal

Locations

Maintenance
Bypass Switch
(SW2)

Conduit
Knockouts

L1

G

GND 1

G

L1L1L2L2N

UPS INPUT

CUSTOMER

CONNECTIONS

UPS OUTPUT

G

N

N

L2

gap exists. Thread hex nuts back onto guide pins
with a 7/1 6” wrench.

8. Verify the Maintenance Bypass Switch (switch SW2
on the unit) is in the ”UPS” position

9. Turn off all UPS-supported loads and plug them into
the POD.

10. Install the two battery fuses (F3 and F4). The second
fuse completes a circuit. The spark is a normal
indication.

11. Roll unit to final position. Allow at least one foot of
rear clearance. Adjust leveling feet.

12. Plug unit power cord into the wall outlet.

13. Turn ON customer-supplied wall outlet circuit breaker
to supply power to UPS control circuits. The fan and
the LCD display activate.

14. The LCD display prompts you to review and accept
default settings (see page 11) or configure the UPS
for your application.

15. After configuration, automatic self-tests begin. If self­tests are OK, the Close Breaker then Press ON
message appears and an alarm sounds. Press Alarm
Silence Button to silence the alarm. If any other
message appears, contact Liebert at 1-800-222-5877.

16. Turn ON Output Circuit Breaker on back of UPS by
turning it OFF, then ON again to reset it. Press the
front panel ON button. The UPS tests the inverter
and displays the Normal Operation message.

17. Green light on unit indicates power available for loads
and normal UPS operation.

18. Turn on each critical load one at a time. The UPS
provides filtered, regulated power to protect valuable
processes and data.

J2

UPS OUTPUT

GND 2

4. Reassemble the POD.

5. With UPS OFF, remove hex nuts on the two guide
pins on the rear of the UPS.

6. While holding the unit with the Maintenance Bypass
Switch on the top, guide the unit so that the UPS
guidepins insert in the holes at the top and bottom.
As the guidepins insert, ensure that the two sets of
connectors align. Once all the connector pins make
contact, push the unit onto the UPS until it is in
contact with the back of the UPS.

CAUTION: If connector pins do not align, DO NOT
force the unit onto the UPS. It may break the pins.
Instead, try to reinstall the unit.

7. Look at the connection from the side. There should
be no gap between the unit connectors and the UPS
connectors. If there is, push the unit further until no

Unit Installation

Maintenance
Bypass Switch
(SW2)

Guidepins
w/Hex Nuts

Input Plug

9

8-18 kVA Connections

DB25

External Power

Breaker

8-12 kVA REAR VIEW

External Power

CAUTION: A qualified electrician must review and ­approve the customer-supplied wiring, circuit
breaker(s), power outlet, and intended loads. Ensure
correct line, neutral, and ground connections, and that
phase rotation is phase A leads phase B (leads phase
C, if third phase is used). See Table #5 in the
Appendix & Site Planning Data.

Table #1 – Compression Field Connections

Connection Wire Size

Range (AWG)

8 –12 kVA Liebert UPStation S™

AC Input

#14 - #2.0

Optional Dual AC Input

Torque (lb.in)

#2.0 - #6 = 45

#8 = 40

#10 - #14 = 35

See Table #1 to the right and the figures on the following
pages for terminal details and block diagrams of UPS with
both single and optional dual input. Use 75 degrees C
copper wire in compliance with the NEC (NFPA 70) and all
applicable local codes.

Remove conduit-landing plates from UPS. Punch conduit
holes in these plates for both input and output
connections. Tighten wire connections according to unit
torque specification labels and Table #1.

Input

The UPS accepts two-phase or three-phase power.

Output
8 - 12 kVA: Hardwire output power to a customer-supplied

panelboard, or to optional distribution units. The
Configurable Distribution unit (in conjunction with Load
Modules) provides receptacle distribution. See
Distribution in the Options section.

15 - 18 kVA: Hardwire output power to a customer­supplied panelboard.

Communications Connector

(RS232, AS/400, LANs)

Optional

SNMP

Interface

Variable

Speed

Fan

Battery
Circuit

Input

Circuit

Breaker

Management Load Module

Communications Connector

REPO
Connection

Bypass
Switch

External
Battery Cabinet
Connector

Output
Circuit
Breaker

Output Conduit
Landing Area

Input Conduit
Landing Area

AC Output

Ground and GEC #14 - #6

15 - 18 kVA Liebert UPStation S™

AC Input
Optional Dual AC Input
AC Output
Optional Ext. Battery

#14 - #2/0

#2.0 - #6 = 45

#8 = 40

##10 - #14 = 35

Cabinet
Ground and GEC

1581EBD External Battery Cabinet

#2.0 - #6 = 120

Input DC and Ground #14 - #2/0

#8 = 40

#10 - #14 = 35

NOTES:

• 8 – 18 kVA systems require a local Grounding
Electrode per NEC 250.

• Minimum size grounding conductors per NEC. Parity
sized ground conductors recommended. Size Neutral
conductors for full capacity per NEC.

• Refer to NEC Article 250 and local codes for proper
wire sizing and grounding practices.

• UPS Output is a separately derived source when
operating on inverter. Output Neutral is bonded to
equipment ground internal to the UPS.

Optional

SNMP

Interface

Optional DB25

Communications

Connector

(RS232, AS/400, LANs)

Output
Circuit
Breaker

Input
Circuit
Breaker

REPO

Connection

Breaker

Conduit

Landing

External

Conduit

Landing

Battery

Circuit

Input &

Output

Plate

Battery

Plate

Management
Load Module

Communications

Connector

Bypass
Switch

Terminal

Block

Access
Covers

Casters

Leveling Feet

Bottom Conduit Access Area

Rear View

10

8 - 18 kVA Start-Up Checklist

L1, L2

1. Open (turn OFF) UPS Output Circuit Breaker.

2. Open (turn OFF) customer supplied distribution circuit
breakers.

3. Turn OFF critical loads and plug them into output
distribution units or customer-supplied distribution.

4. Turn ON battery circuit breaker on rear of UPS.

5. Roll unit to final position. If using flexible conduit for
power connections, allow at least 18 inches of
clearance around the UPS with enough conduit to roll
UPS 3 feet from wall. If using rigid conduit, allow at
least 3 feet of clearance around the UPS. Adjust
leveling feet.

6. Close (turn ON) customer-supplied circuit breaker that
supplies power to the UPS.

7. Close (turn ON) the UPS Input circuit breaker to
supply power to UPS control circuits. The fans and
LCD display activate.

8-18kVA Single Line Diagram

AUTO / MANUAL BYPASS

8. The LCD display prompts you to review and accept
default settings or configure the UPS for your
application. See page 11 for default settings.

9. After configuration, automatic self-tests begin. If self­tests are OK, a horn sounds and the ”Close Breaker
then Press ON” message appears. If any other
message appears, contact Liebert at 1-800-222-5877.

10. Close (turn ON) Output circuit breaker on back of
UPS and press the ON button.

11. The UPS tests the inverter and displays the Normal
Operation message.

12. Close (turn ON) customer-supplied distribution circuit
breakers.

13. Turn on each critical load one at a time. The UPS
provides filtered, regulated power to protect valuable
processes and data.

N

L1, L2

L3 (OPT)

G

SURGE

SUPPRESSION

AND EMI

FILTER

FRONT END CONVERTER

BATTERY

BATTERY

CHARGER

INVERTER

INVERTER

L1, L2

N

AUTO / MANUAL

BYPASS

EMI

FILTER

N

G

DC

11

OPERATION

NOV 21

I

OFF

OFF Button

Alarm Silence

Button

Control / Display Panel

The control panel includes tactile pads (dome buttons) and
a menu-driven LCD (liquid crystal display). The display
provides full metering, present status, and alarms, if any.
See figure on right.

Control Buttons
ON Button - This button turns on the UPS inverter. It

supplies power to the output if the Output Circuit Breaker
is closed. The ON button also restarts the UPS after a
manual shut-off.
OFF Button - Press this button twice to cause an orderly
shutdown of the unit. The unit turns OFF all power to
loads, including bypass, and disables Auto-Restart until
the ON button is pressed. However, the display remains
active and the batteries still recharge. Pressing the button
only once causes a return to normal operation in a few
seconds. This control feature helps avoid accidental
shutdowns.
Note: If you press the OFF button a third time, a display
message prompts you to press it a fourth time which
opens the Output Circuit Breaker at the rear.
Alarm Silence Button - This button silences alarms. The
alarm sounds if a new alarm occurs.

LCD Display

The menu-driven LCD display has four (4) lines of text (16
characters per line) on a screen to indicate status, alarms,
metered conditions, and user selections. The display
controls include four (4) buttons to view or select UPS
conditions:

Left Arrow - Returns to previous screen or value
Right Arrow - Advances to next screen or value
Enter - Selects a menu, display, or value and enters

selected values into the control program
Escape - Cancels selections. It returns values to original
settings and the display to the main menu.

LCD Display

NORMAL OPERATION

12:45

Press for Menu

ESC

Left Arrow

Button

Right Arrow

Button

Enter

Button

Escape

Button

O

ON

ON Button

After reviewing or changing the output configuration, then
accepting it, start-up self tests begin. The selected
configuration is stored in control memory even with no
power to the UPS.

Self tests begin immediately if power is applied after initial
start-up. Configuration review is optional.

The unit will not repeat most self tests when turned OFF
then ON because power is not removed from control logic.
Upon turning it ON, the unit tests the inverter. To start
unit, close the Output Circuit Breaker.

The LCD panel displays messages and operating
parameters. It usually displays a Normal Operation
screen (see figure on right) which includes date, time, and
a prompt on the help line to select the Main Menu. Alarms
or faults displace the Normal Operation screen.

The user screens are organized in a multi-level menu
system (see page 13). Select a choice with the keys
below the screen. The Enter key moves the cursor to the
next lower menu level. The Escape key returns the cursor
to the previous menu. Use the Left and Right keys to
scroll through available options and to select user­programmable values. The cursor indicates which value is
active. Press Enter to record the value after each
selection.

Initial Start-Up

At initial start-up, the LCD display prompts the user to
review or change the configuration. The initial
configuration menu allows the following selections:
Review Configuration, Change Settings, UPS Meters,
and Accept Settings.

12

User Menus - The Main Menu allows these options:

• Configuration

• UPS Meters

• Event Log

• Test Options

• Power Management

The Configuration option allows review or change of the
following settings:

Configuration Setting

Input Voltage
Input Frequency
Output Voltage
Output Frequency
Low Battery Warning Time
Auto Battery Test
Total UPS Runtime
Input Wiring
Output Wiring
Time and Date
Modem Mode
Horn Volume
Screen Contrast
Battery Charger Mode
Slew Rate
Input Frequency Sync Range
Start Up Mode
Password Protection
Password
UPS ON(1)/OFF(0)
Transfer UPS
Battery installed on

Default Value

208/120 VAC
60 Hz
208/120 VAC
60 Hz
2 Minutes
Enabled (5 wks)
0 Hrs
L1-L2-N-G
L1-L2-N-G
Present
(see Options)
16 (mid-range)
16 (mid-range)
Standard

1.0 Hz/Sec

1.0 Hz

Auto-Restart
Disabled

AAAAAAA

(remote use)
(remote use)
(Date)

The UPS Meters option allows review of the following
UPS meters:

Load % kVA; A and B Phase
Input A-Phase; volts and amps
Input B-Phase; volts and amps
Bypass A-Phase; volts
Bypass B-Phase; volts
Output A-Phase; volts and amps
Output B-Phase; volts and amps
DC Bus; volts and amps
Frequency; input and output
Temperature; inside unit
Inverter Wattage; A and B Phase

The Event Log option allows review of the Alarm History
log and the Input Disturbances log. The Test Options
option allows a Screen Test (Enter then ESC) and a
Battery Test (Enter begins a 30 second test) NOTE: See
the following page for a complete menu tree. See the
Options section for more information about Power
Management.

Table #2 Factory Default Settings

NOTE: To change input or output voltage, frequency, or

wiring, push the OFF button twice. Though the input is
connected and the display is active, there is no output to
the loads after pressing OFF twice. Other changes may
be made during UPS operation.

13

LCD MENU TREE

MAIN MENU

Configuration

Review

UPS RATING
INPUT VOLTAGE
INPUT FREQUENCY
OUTPUT VOLTAGE
OUTPUT FREQUENCY
LOW BATTERY WARNING TIME
AUTO BATTERY TEST SETTINGS
TOTAL UPS RUNTIME
ADVANCE CONFIGURATION

Input Wiring
Output Wiring
Time and Date
Modem Mode
Horn Volume
Screen Contrast
Battery Charger Mode
Slew Rate
Input Frequency Sync Range
Start-up Mode
Software Revision
Battery Instillation Date

Change

Settings

INPUT VOLTAGE
200/100
220/110
230/115
240/120
220/127
208/120
INPUT FREQUENCY
50 Hz
60 HZ
OUTPUT VOLTAGE
200/100
220/110
230/115
240/120
220/127
208/120
OUTPUT FREQUENCY
50 Hz
60 Hz
LOW BATTERY WARNING TIME
AUTO BATTERY TEST PARAMETERS
TOTAL UPS RUNTIME
ADVANCED CONFIGURATION
Input Wiring

L1-L2-N-G
L1-L2-G
L1-N-G
L1-L2-L3-N-G
L1-L2-L3-G

Output Wiring

L1-L2-N-G
L1-L2-G
L1-N-G

Time & Date
Language Configuration

English
French

Modem Mode
Horn Volume
Screen Contrast
Battery Charging Mode

Turbo
Slow

Slew Rate
Input Frequency Sync Range
Start-up Mode

Auto
Manual

Set Password
UPS on/off
Transfer UPS to Bypass
Battery Installation Date
Custom Relays

Review
Program

UPS

Meters

LOAD %
INPUT A PHASE V & I
INPUT B PHASE V & I
BYPASS A PHASE V & I
BYPASS B PHASE V & I
OUTPUT A PHASE V & I
OUTPUT B PHASE V & I
BATTERY BUS V & 1
INPUT/OUTPUT
FREQUENCY
TEMPERATURE
INVERTER WATTAGE

Event

Log

ALARM HISTORY
(Holds 256 Alarms)
INPUT DISTURBANCES
Brownouts
Blackouts
Transients

Test

Options

TEST SCREEN
TEST BATTERY

Power

Management

PROGRAMMING
REVIEW
OVERRIDE
LOAD LABELS

14

System Start-Up

Manual Restart after Manual Off

If Manual Restart has been selected (rather than Auto­Restart) and someone has turned the unit off, the Output
Circuit Breaker will probably be closed. Just press the ON
button to turn on the UPS inverter.

Auto-Restart

The factory enables this feature. The UPS automatically
restarts and supplies power to the load after battery
depletion. The UPS supplies power to the load as soon as
utility service is restored.
Turning the UPS OFF disables Auto-Restart until the ON
button is pressed.

Manual Restart after Low Battery Shutdown or REPO

Manual Restart (instead of Auto-Restart) opens the Output
Circuit Breaker upon battery depletion during a power
outage. Pressing the customer-supplied REPO switch
also opens the Output Circuit Breaker. To manually
restart the UPS, close the Output Circuit Breaker (turn it
OFF, then ON to reset breaker). When the ”Press ON to
start system...” message appears, press the ON button.

Normal Operation

When the utility power is available and within acceptable
limits, the unit supplies filtered and regulated power to the
load through the inverter. The battery charger maintains a
charge on the battery.
During normal operation, the LCD display informs you of
UPS status. The display indicates when the UPS
transfers the load to or from bypass (if available), when
the load is On Battery, and when alarms or faults occur.
See the alarm chart in the Appendix for alarm message
meanings and corrective actions.

Battery Operation

On Battery

During low input voltage, the battery supplements inverter
power. During a utility power failure, the battery provides
all power required for normal operation. A fully charged
battery provides at least 10 minutes of output power.
More battery power is available if your system includes an
optional external battery cabinet (see Options). Less load
increases the battery back- up time. If your UPS supports
several computer systems, turning some of them off
allows others to run longer. Battery Run Time curves in
the Appendix show performance of the internal battery and
external battery cabinets.
NOTE: If utility power remains off, perform an orderly
shutdown of the critical load before exhausting the battery.
If utility power returns during battery operation, normal
operation resumes and battery recharging begins.

The battery charger compensates for battery temperature.
In addition, the charger has two recharge rates, user­selectable through the LCD display. The ”turbo” rate
recharges batteries to 95% capacity within 10 times the
discharge duration. The ”standard” rate recharges
batteries to 95% capacity within 20 times the discharge
duration. Select the ”standard” factory default setting rate
if your utility system has frequent (weekly) blackouts.
With ”turbo” mode enabled, the microprocessor
determines how often to use the fast recharge rate, in
order to optimize battery life.

Bypass Operation

The bypass provides an alternate path for power to the
critical load. On bypass, utility power feeds directly to the
load.

Auto-Bypass

Upon overload or inverter
failure, the UPS
automatically transfers to
(and from) bypass.
During an overload, the
UPS attempts to
retransfer from bypass to
the inverter up to 15 times
within a 20-minute period.
If the overload prohibits
retransfer after 20
minutes, the unit remains
on bypass.

Manual Bypass

Manually select the
bypass power to the
critical load by operating
the bypass switch on the
back of the unit. When
activated, the unit immediately transfers to bypass and
turns OFF the inverter, PFC, and battery charger. The
UPS remains in bypass until the switch is moved to the
UPS position. The user may also initiate manual bypass
via the LCD display or RS-232 remote communications.

Bypass
Switch

Battery Recharge

Upon return of acceptable utility power after battery
operation, the battery charger begins to charge the
batteries. Battery charging stops upon pressing the OFF
button four times or activating the REPO.

15

Maintenance Bypass Operation

on 3.5 - 6 kVA Units

The POD includes a Maintenance Bypass Switch that
allows UPS removal for service or maintenance without
interrupting power to the loads.

Transferring from UPS Operation to Maintenance
Bypass Operation

1. Transfer UPS to manual bypass operation via switch
SW1 on back of the UPS. The UPS beeps, indicating
bypass operation. Press the Alarm Silence button to
silence the beep.

2. With UPS in bypass, rotate the unit Maintenance
Bypass Switch (SW2) to the ”Maintenance Bypass”
position.

3. Press the UPS OFF Button twice. Utility power now
supports the load. Leave the POD mounted on the
UPS. Allow only qualified service personnel to
remove it. For UPS repair or maintenance, contact
Liebert at 1-800-222-5877.

Transferring from Maintenance Bypass Operation to
UPS Operation

1. Verify the UPS manual bypass switch (SW1) is in the
”bypass” position, and the UPS output circuit breaker
is ON. (Turn the circuit breaker OFF and then ON to
reset it.)

2. Reattach unit following the instructions in the 3.5-6
kVA Startup Checklist.

3. UPS begins start-up and the manual bypass alarm
sounds. Silence the alarm.

4. Set the UPS manual bypass switch (SW1) to the
”UPS” position.

5. UPS display indicates ”Start up test warning: check
messages”. Press the right arrow button. If ”Load on
Manual Bypass” appears, turn the UPS ON by
pressing the ON button twice.

6. Wait for the UPS display to indicate ”Normal
Operation”. Set unit Maintenance Bypass switch
(SW2) to the ”UPS” position. UPS now supplies
controlled power to the loads.

System Shutdown

Manual Off

Pressing the OFF button twice removes power to the load
by turning off the inverter and opening the bypass. The
Output Circuit Breaker remains closed, even though
output power is unavailable.
Pressing the OFF button twice disables Auto-Restart until
you press the ON button, but control logic and battery
charging remain active.
NOTE: Pressing the OFF button a third time displays a
message prompting you to press the OFF button a fourth
time. Pressing it a fourth time opens the Output Circuit
Breaker at the rear of the unit.

Remote Emergency Power Off

Each unit includes a connector to facilitate Remote
Emergency Power Off (REPO) from a customer-sup- plied
switch. An optional switch with 50 feet of cable is
available. Activating Emergency Off opens the Output
Circuit Breaker and disables battery recharge.

UPS Alarms

See the alarm chart in the Appendix for alarm message
meanings and corrective actions. Perform the corrective
action described for a specific alarm. For assistance,
contact Liebert at 1-800-222-5877.

16

OPTIONS

2x4 Wall Stud

8-12 kVA Rear View

NOTES

Contact your Liebert UPS distributor for option availability and ordering information.

Distribution
Configurable Distribution (CD)

An optional enclosure hardwires to 3.5 - 12 kVA units and accommodates up to eight Standard or Power Management Load
Modules. It may be wall or floor-mounted and includes a 70 Amp circuit breaker. Refer to drawings below.

Wall Material (REF)

BACK VIEW

19“

(REF)

Rack may be mounted 4“ to the

right or left of location shown.

16“(REF)

TOP

VIEW

Rack Mat’l

¼ 20x1.0

Bolt

Detail A

¼ Washer

¼ Split Loc

¼ 20 Nut

Bracket

• Weight, including load modules, about 100 lbs.

• Attach brackets to wall as shown using customer-

supplied 1/4” hex head lag screw or equivalent
hardware.

• Options: 5’ UPS to CD Power Cable, 5’ Power
Management Power Cable, Wall Mount Bracket,
and Load Modules.

• Refer to NEC Article 250 and local codes for proper
wire sizing and grounding practices.

• Configurable Distribution may be used on all

TB2

L1L1L2L2N

N

Customer

Output

G

Communications Connector

TB1

This terminal

block allows for

daisy-chaining

of additional

distribution

units.

Power Management

Output
Terminal
Blocks

Output Terminal Block wire

Output Wiring

Access Area

Output Conduit

Landing Area

Input Conduit
Landing Area

Output

Breaker

L1 L2

range: (1) #14 - #2 AWG

per connection

TB7

TB2

RIGHT

SIDE

17

Load Modules

Standard Load Module

Load Modules for 3.5 to 12 kVA units offer a variety of
power receptacles when used in conjunction with the
Configurable Distribution. Each Load Module includes:

1. Circuit Breaker

2. Green output receptacle(s) power indicator

3. 1 or 2 Output Receptacles.
Hard Wire (terminal block) Load Modules provide a

knockout to attach flexible conduit (see drawings to the
right). Use no more than three feet of conduit to avoid
attachment points required by national and local codes.
Terminal compression lugs accept wire size 42 to #14
AWG. Select wire size based on UL 1778 and NEC. See
Table #3 below for circuit breaker provided. Tighten each
connection based on wire size as follows: 10 to 14 AWG to
35 Ib.-in., 8 AWG to 40 lb.-in., 4-6 AWG to 45 lb.-in., 2-3
AWG to 50 lb.-in.

Hardwire Load Module

Remove screw to open module

cover for terminal block access.

Terminal block

lug range:

(1) #14 - #2 AWG

See Power Management for details on Power
Management Load Modules.

TABLE #3 – LOAD MODULES

Receptacle Voltage

(configuration)

Circuit

Breaker

5-15R2 120 (L-N-G) 15 A, 2 Pole
L5-15R1 120 (L-N-G) 15A, 1 Pole
L6-15R1 208 or 240 (L-L-G) 15 A, 2 Pole

5-20R2 120 (L-N-G) 20 A, 2 Pole
L5-20R1 120 (L-N-G) 20 A, 1 Pole
L6-20R1 208 or 240 (L-L-G) 20A, 2 Pole

L14-30R1 208/120 or 240/120 (L-

20A, 2 Pole

L-N-G)

6-15R1 208 or 240 (L-L-G) 15A, 2 Pole
L5-30R1 120 (L-N-G) 30 A, 1 Pole
L6-30R1 208 or 240 (L-L-G) 30 A, 2 Pole

L14-30R1 208/120 or 240/120 (L-

30A, 2 Pole

L-N-G)

Hardwire (15A)208/120 or 240/120 (L-

15A, 2 Pole

L-N-G)

Hardwire (20A)208/120 or 240.120 (L-

20 A, 2 Pole

L-N-G)

Conduit entry knockout:

.5“, .75”, or 1.0” diameter

HARDWIRE NOTES

• Use flexible metal or liquid-tight metal conduit only.

• For conduit lengths longer than three feet, refer to NEC article 350-4 or 351-4 for

securing conduit.

• Use knockouts for conduit attachment. DO NOT drill into UPS or load module.

• Use wire sized in accordance with NEC 310-16 and the output breaker amperage.

18

Maintenance Bypass 8 - 18kVA

UPStation S™

Standard Features

The Liebert UPStation S™ Maintenance Bypass
Cabinet allows the customer to completely isolate
the UPS for repair and/or preventive
maintenance. A rotary switch provides a make­before-break system that enables a transfer to
and from maintenance bypass without
interruption to the load.

There are two sizes available; the VM12000
series for the 8-12 kVA units and the VM18000
series for the 15 -18 kVA units.

Weights/Dimensions

The maintenance bypass cabinet is a wall-mount
system. Dimensions and weights depend on the
KVA rating and options installed. Use the
following table to determine the weight of your
maintenance bypass. Dimensions can be found
on page 20.

Approximate Weights in Pounds

Model Number 125 175

VM12000 
VM18000 

• A locking handle prevents unauthorized
access.

• A holder for the User’s Manual and any site
documentation is provided on the inside
cover of the door. This enables the
customer to keep all documentation relating
to their UPS and maintenance bypass with
the unit.

• Auxiliary contacts, rated at 15 amps and 600
volts, are available if the customer requires
remote monitoring of the maintenance
bypass.

• Conduit knock-outs for power wiring and
control wiring are prefabricated into the
enclosure, allowing for top or bottom
entrance.

Modes of Operation

The are three modes of operation on the
maintenance bypass; On-Line, Test, and
Maintenance Bypass. There are two major types
of maintenance bypass cabinets and Liebert
UPStation S™ units when referring to the one­line diagrams and power flows.

On-Line

When the rotary switch is placed in the On-Line position, contacts A and C are closed with contact B open.
The standard Liebert UPStation S™ is powering the critical load as illustrated below.

19

Test

ABC

When the rotary switch is placed in the Test position, contacts A and B are closed and C is open. The
power for the load is now coming from the maintenance bypass source, as illustrated in below. The
connection from the output of the UPS is open. Input power to the UPS is still available for testing and
troubleshooting purposes.

MAINTENANCE BYPASS

FEED

B

A

BYPASS

PFC

BATTERIES

INVERTER

BYPASS

C

LOAD

UPStation S™

Maintenance

When the rotary switch is placed in the Maintenance position, contacts A and C are open and B is closed.
The power for the load is coming from the maintenance bypass source, as illustrated below. The UPS is
now completely isolated from the source as well as the critical load.

CRITICAL

UTILITY

FEED

PFC

BATTERIES

MAINTENANCE BYPASS

CRITICAL

LOAD

BYPASS

INVERTER

BYPASS

UPStation S™

20

INSTALLATION

This section includes unloading, inspection, mounting and connections for the maintenance bypass
cabinets. Reading this section in its entirety before you begin is a good preparation for your start-up.

UNLOADING

The unit is shipped on a box that is banded down
to a pallet. To unload the maintenance bypass
cabinet:

• Remove the banding from the container

• Open box and remove maintenance bypass.

• Inspect for any damage to the unit. Report

any damage to the shipping carrier and

The dimensions required for mounting of the maintenance bypass are illustrated below. All dimensions are
in inches.

complete a freight damage claim form.
Insure that the system ordered is what was
received prior to mounting.

Mounting

The Liebert UPStation S™ Maintenance Bypass
Cabinet is designed for wall mount only. Prior to

installation, verify that the wall can support
the weight of the bypass cabinet. Weights
can be found on page 18.

Model Number A B C D E F G H

VM12000 12 24 24 22.5 21 1.5 .75 .5
VM18000 16 24 24 22.5 21 1.5 .75 .5
Note: All dimensions are in inches

21

8-18 kVA UPS Connections

4. RMBP units are designed to be mounted on the wall. Insure that

1. Input and Output Power wiring must be run in separate conduit.

2. Control and Power wiring must be run in separate conduit.

3. Wire and breaker sizing must be in accordance with NEC and
local electrical codes.

wall can support weight prior to installation.

5. The UPStation S must have an internal bypass for system to
operate according to specifications.

The 8-18 kVA Liebert UPStation S™ allows the customer
to connect a three-phase input if desired. The only benefit
to connecting a third phase is to balance a three-phase
feed transformer.

The 8-18 kVA Liebert UPStation S™ has two basic
connections; UPS Input and UPS Output. Below is an

illustration of how the system will look electrically once the
installation is complete.

Connections between the maintenance bypass and the
UPS must be run in separate conduit. Due to the
clearance requirements for service on the UPS, it is
recommended that flexible conduit be used.

UPStation S™

22

Input and output terminal blocks are provided on the back of the 8-12 kVA Liebert UPStation S™ as illustrated below. Conduit
can be landed on the rear or bottom of the UPS. Note that side, rear, front and top access is required for service on all Liebert
UPStation S™ product lines.

RS232-DB25

Input and output terminal blocks are provided on the back
of the 18 kVA UPS as illustrated above right. Conduit can
be landed on the rear or bottom of the UPS. Note that
side, rear front and top access is required for service on all
Liebert UPStation S™ product lines.

8-18 kVA Maintenance Bypass Connections

The 1512MBC and the 1518MBC maintenance bypass
have four basic connections: maintenance bypass input, to
UPS rectifier input, to UPS output and to critical load.

• The input to the maintenance bypass comes from the
utility source to the system. There must be a breaker
feeding the system. Size the input feed breaker and

wiring as per NEC. The total current into the
maintenance bypass should not exceed 46A for the 8
kVA, 56A for the 10 kVA, 66A for the 12 kVA and

94.4A for the 18 kVA

• It is recommended that the site wiring and overcurrent
protection be sized initially for 12 kVA if the UPS is an
8 or 10 kVA module.

• Wire size range for TB5 terminal block is #10 to #22
AWG. Wire size range for TB1 through TB4 is #4 to
#8 AWG. Terminal blocks have box type lug
connections with slotted screw.

23

OPERATION

The best way to initially test and start-up the unit is to do it
without a load.

Initial System Start-up

• Set the maintenance bypass rotary switch to the
maintenance position. Set the meter switch to the
Input L1-L2 position (units with meters)

• Locate customer’s critical load breakers. Verify that
all load breakers are in the off position. Close
customer supplied feed breaker. Power is now
flowing through the maintenance bypass as illustrated
on page 19.

• Verify the L1-L2, L1-N and L2-N input voltages, with a
digital voltmeter (DVM), are as per the customer’s
specifications. The UPS and maintenance bypass

input and output voltages and frequency must be
the same for the system to operate according to
specifications.

• Rotate the bypass switch to the Test position. Power
is now flowing through the maintenance bypass as
illustrated on page 19.

• Close the UPS battery breaker and input breaker, in
that order. The UPS should now be going through its
normal testing and start-up procedure. Follow UPS
LCD screen instructions.

• After the output breaker is closed and the ON button
is pressed, the unit should return to the Normal
Operation screen. Proceed to the meter screen on
the UPS LCD. Verify that the output voltage and
frequency is the same as the input voltage and
frequency.

• With a DVM, verify that the there is no voltage
difference between the following points in the bypass
cabinet:

TB1 L1 to TB3 L1
TB1 L2 to TB3 L2

• Return the UPS LCD to the Normal Operation screen.
Transfer the UPS to bypass by placing the
bypass/UPS switch on the back of the unit in the
bypass position.

• Again with a DVM, verify that the there is no voltage
difference between the following points in the bypass
cabinet:

TB1 L1 to TB3 L1
TB1 L2 to TB3 L2

• Rotate the bypass switch to the On-Line position.
Transfer the Liebert UPStation S™ to the UPS mode
by placing the bypass/UPS switch on the back of the
unit in the UPS position and pressing the ON button
on the front of the unit. Power is now flowing through
the maintenance bypass as illustrated on page 18.

• The bypass switch is operating according to
specifications if no problems occurred during the
previous start-up steps.

• Transfer the UPS to bypass by placing the
bypass/UPS switch on the back of the unit in the
bypass position. Verify the L1-L2, L1-N and L2-N
output voltages, with a DVM, are as per the
customer’s specifications.

• The customer may now bring up their connected
critical loads. Always energize the load on bypass,

either UPS internal bypass or maintenance
bypass.

• After the load is up and operating, the UPS may now
be transferred on-line. Transfer the Liebert UPStation
S™ to the UPS mode by placing the bypass/UPS
switch on the back of the unit in the UPS position and
pressing the ON button on the front of the unit.

• Power is now flowing through the maintenance
bypass as illustrated on page 18. The load is
protected by UPS power.

24

Transfer to Maintenance Bypass from On-Line

• Prior to transferring the maintenance bypass to the
bypass mode, the UPS must be in bypass. Verify that
the UPS does not have a bypass out-of-sync or
bypass voltage out-of-tolerance alarm prior to
transferring.

• If no alarms are present, transfer the UPS to bypass
by placing the bypass/UPS switch on the back of the
UPS in the bypass position. Verify the L1-L2, L1-N
and L2-N output voltages, with a DVM, are as per the
customers specifications.

• Rotate the maintenance bypass switch counter­clockwise to the test position. Open the UPS output
breaker and silence the alarm. Power is still being

powered to the input of the UPS in the test
position.

• Continue rotating the maintenance bypass switch
counter-clockwise to the maintenance position. The
UPS should now shut off and input power has been
removed. Open the input, output and battery breaker
prior to servicing the unit.

Transfer to Test from Maintenance Bypass

• After preventive maintenance or repairs have been
performed, it is important to test the UPS prior to
placing it on-line. Please use the following steps to
test the UPS without transferring on-line.

• Close the Battery breaker on the UPS. Place the
bypass/UPS switch on the back of the unit in the UPS
position.

• Rotate the bypass switch on the maintenance bypass
clockwise to the Test position. Close the input
breaker on the UPS.

• The UPS should now be going through its normal
testing and start-up procedure. Follow the LCD
screen instructions.

• After the output breaker is closed and the ON button
is pressed, the unit should return to the Normal
Operation screen. Proceed to the meter screen on
the LCD. Verify that meters are within operating
specifications.

• Return the LCD to the Normal Operation screen.
Transfer the UPS to bypass by placing the
bypass/UPS switch on the back of the unit in the
bypass position.

Transfer to On-Line from Test

• Always verify that the UPS is in the bypass mode
prior to transfer to On-Line position. Rotate the
bypass switch to the On-Line position.

• The customer may now bring up their connected
critical loads. Always energize the load on bypass,

either UPS internal bypass or maintenance
bypass.

• After the load is up and operating, the UPS may now
be transferred on-line. Transfer the UPS to the UPS
mode by placing the bypass/UPS switch on the back
of the unit in the UPS position and pressing the ON
button on the front of the unit.

TROUBLESHOOTING/WARRANTY
Troubleshooting

Troubleshooting should only be performed by a trained
engineer authorized by. If you cannot resolve a problem,
consult Liebert immediately at 1-800-222-5877. Do not
continue to use the maintenance bypass cabinet if it is not
performing according to specifications.

25

POWER MANAGEMENT

Use Power Management to program power to individual
loads to turn OFF or ON at specific times or as a result of
specific events. Only Load Modules with Power
Management circuitry respond to Power Management
programming.
Power Management enables you to selectively turn
programmable Load Modules (receptacles) off and on to
conserve energy, extend battery time, or control network
devices based on:

• A programmed schedule

• Events such as utility power failure, battery time left,

utility restored, UPS on bypass, and others

• Real time control (manual override), including
rebooting the load

Other features include load labeling, programmable delay
for each action, warning displays, and linking outputs so if
one load module turns OFF (or ON) another one will also.
A manual override is also available (force off, force on, or
reboot).
Read these instructions entirely before programming UPS.
After reading these instructions, decide on a program
schedule. Make a chart of needed program steps.
Include scheduled events (day and time) as well as
conditions such as utility failure, battery time left, and utility
restored.

Program entries must be made in pairs. Program an
output to turn both OFF and back ON at certain times or
events. This pairing concept provides program closure for
each load. Example: An output programmed to turn OFF
at utility failure must also be programmed to turn ON at
utility restoration.

Getting Started

Access Power Management (option 5) from the main
menu on the LCD display. The Power Management menu
offers the following selections:

• Programming

• Review

• Override

• Load Labels

If your UPS has password protection, then all selections
require a password with the exception of Review.
Press the enter key to make a selection. Use the right

and left arrow keys to display the available selections
when a programmable item is flashing. Press enter to
store your selection and flash the next item.

When reviewing the program, use the right arrow to
display the next program step.

To program (or review), a program step box appears:

Power Management programs consist of four elements:

• Which Load Module

• What event triggers the Load Module

• Whether the Load Module turns ON or OFF

• The time delay between the event and the Load

Module reaction

CAUTION: A program step becomes active as soon as
it is entered. Therefore, program the scheduled ON
action for each load before programming the OFF
action. Otherwise, turn OFF critical loads.

To enter a program step (password may be required):

1. Select a Load Module

A. Press the enter key to flash the first load module
selection. Press the right or left arrow key to review
available selections (detailed below).
B. Press Enter key to store the first load modules
selection and flash the second one. Make load
selections as required for this program step. After
making all load selections, the second line flashes.

2. Select an Event to Trigger the Load Module

When the ”event” (second line) flashes, press the
right or left arrow key to review available selections
(detailed below). If Day Time or Date Time is
selected, those items will also need to be
programmed. After making all load selections, the
ACTION (fourth line) flashes.

3. Turn the Load Module ON or OFF

When the fourth line flashes, press the right or left
arrow key to review available selections (Turn OFF
load, Turn ON load, or Warning). After selecting the
action, the DELAY (S) flashes.

4. Select a Time Delay

Select delay of S for seconds or M for minutes. If no

delay is required, leave this selection as ”S”. When
the two delay digits are flashing, use the right or left
arrow to select 00 to 99.

Press Enter after this final selection to flash the entire
program step block. Review all selections of this step with
your chart. Press Enter to confirm step or escape to make
a change. Make a change the same way as described
above. The selections are available in the same
sequence.

Press the right arrow to display the next program step.
The step number (1, 2, 3, etc.) is automatically assigned.
The last step always says Nothing Selected in the second
line. This is the initial screen for programming the next
step.

01)Load #0,0,0,0
Nothing Selected
ACTION DELAY(S)
Turn OFF load (00)

26

Power Management Programming Elements

#

,

,

,

Schedule Number

Load Numbers

Turn OFF Load

Time Base

Time

00 - 99

Event

Nothing Selected
Day

Time

Date

Time
Batt. Time Left
Utility Failed
Utility Restored
System Powerup
Outlet

[ ] ON

Outlet

[ ] OFF
On Bypass
Delete Entry

01 - 30

)LOAD

ACTION

Action

Turn ON Load

Warning

DELAY

S or M

1 - 8 or ALL

( )

Loads

These Load selections are available: 1, 2, 3, 4, 5, 6, 7, 8,
All. A ”load” as referenced in this section is the Load
Module. Since some load modules contain two
receptacles, both receptacles are considered one ”load”.
Load Modules are numbered from top to bottom in the
Configurable Distribution unit.

Events

The following Event selections (schedule or conditions)
are available:

• Day Time: Individual days, All, M-F, and S-S. Time is
based on 24 hour clock, and then to the minute.

• Date Time: Month and Day (avoid invalid dates such
as FEB 30). Time is based on 24 hour clock, and
then to the minute.

• Batt Time Left: Based on UPS internal calculation
Note that this is not battery time elapsed.

• Utility Failed

• Utility Restored

• Outlet [X] ON: X can be 1 to 8. This event links

selected loads in the first line to the load selected
here. This link is ignored when in override mode.

• Outlet [X] OFF: X can be 1 to 8. This event links the
selected loads in the first line to the load selected
here. This link is ignored when in override mode.

• On Bypass

• Delete Entry: Deletes an entire program step (ignore

all other flashing selections for this process).

Actions

The following Action selections are available:

• Turn OFF load

• Turn ON load

• Warning

Override

The Override selection causes immediate action to a load
module regardless of what was programmed. Linked
outputs are ignored during an override command. These
Override selections are available:

As Scheduled
Force Power OFF
Force Power ON
Reboot (OFF-ON) OFF for 30 seconds

The screen displays:

Load #X: Use right or left arrow to display 1 to 8
Load Label: See Load Labels section
As Scheduled: Use right or left arrow to select

option

NOTE: After an override, it is important to return the load
module to its current state (ON or OFF) via Force Power

ON/OFF, and then return it to As Scheduled.
Load Labels

Assign Load Labels of up to 16 characters. Some labels
are factory preprogrammed. Since UPS controls do not
provide an alphanumeric keyboard, use right or left arrow
to display a selection, then press enter to select. The
following selections are available:

Bridge Terminal
Computer No Label
Display Individual letters (A to Z)
Hub Individual numbers (0 to 9)
Modem Selected symbols
Router Blank space
Server

In applying labels, remember that some Load Modules
supply power to more than one device.

Operation

Selected program steps become active as soon as they
are entered Maintain a chart of selections. Change the
chart when you change the program.

For assistance call Liebert at 1-800-222-5877.

Sample Programs

Refer to Sample Programs #1 and #2 on the following
pages.

Delays

The following Delay selections are available:

S Seconds 00 to 99
M Minutes 00 to 99

If no delay is required, leave this selection as S with a
value of 00. The right arrow increases from 01 in
increments of 1. The left arrow decreases from 99 in
increments of 1.

27

POWER MANAGEMENT SAMPLE #1

01)LOAD #1,2,4,0

01)LOAD #1,2,4,0

01)LOAD #1,0,0,0

01)LOAD #1,0,0,0

01)LOAD #2,0,0,0

01)LOAD #1,2,0,0

POWER MANAGEMENT SAMPLE #2

Objective: Save energy by turning OFF computers after

hours. Specifically, turn ON all loads except load 03 at
7:00 a.m. and then turn them OFF at 6:00 p.m. every
workday (M-F). Remain off during the weekend.

Define Parameters
Start

Loads: #1,2,4
Action: Turn ON loads
Event: Time of Day
Delay: None

Step #1A:

Nothing Selected

Closure

Loads: #1,2,4
Action: Turn OFF loads
Event: Utility Restored
Delay: None

Step #1A indicates
selection of load
modules 1,2, and 4.

ACTION DELAY (S)

Turn OFF load 00

Step #1B:

Step #1B indicates
selection of the

Day Time

Day/Time feature.

ACTION DELAY (S)

Turn OFF load 00

Objective: Extend battery time by shutting down less
critical loads. Specifically, remove load #1 one minute
after going on battery, and load #2 two minutes after going
on battery. When utility power returns, put loads #1 and
#2 back on line.

Define Parameters

Start

Loads: #1,2
Action: Turn OFF loads
Event: Utility Failed
Delay: 1&2 minutes

Step #1A:

Nothing Selected

ACTION DELAY (S)

Turn OFF load 00

Step#1B:

Utility Failed

ACTION DELAY (M)

Turn OFF load 00

Closure

Loads: #1,2
Action: Turn ON loads
Event: Utility Restored
Delay: None

Step #1A
indicates selection
of load module
#1.

Step #1B shed
load #1 one
minute after utility
fails.

Step #1C:

01)LOAD #1,2,4,0

M-F 7:00

ACTION DELAY (S)

Turn ON load 00

Step #2:

02)LOAD #1,2,4,0

M-F 18:00

ACTION DELAY (S)

Turn OFF load 00

Step #1C indicates
loads 1,2, and 4
turn On at 7:00 a.m.
Monday through
Friday with no time
delay.

Step #2 indicates
loads 1,2 and 4 turns
OFF at 6:00 p.m.
(18:00) Monday
through Friday with
no time delay.

Step#2:

Utility Failed

ACTION DELAY (S)

Turn OFF load 00

Step#3:

Utility Restored

ACTION DELAY (S)

Turn ON load 00

Step #2 sheds
load #2 two
minutes after
utility fails

Step #3 turns on
#1 and #2 with no
time delay when
utility power
returns.

28

Remote Emergency Power Off (REPO) Cable

PIN 1

Pushbutton

This optional 50-foot cable includes the attached matting
connector for connection to the UPS. The REPO
connector is at the rear of the unit. The factory supplied
switch provides a normally open (N.O.) contact rated for 1
Amp at 24 Volts. Pressing the REPO button opens the
UPS Output Circuit Breaker and disables battery charging.
See the figure below.

REPO with Lighted

PIN 3
PIN 4

NOTES:

• Run all customer-supplied control wiring in separate
rigid steel conduit from power wiring.

• Wire in accordance with national and local electrical
codes.

• See drawings in Connections for UPS REPO
connector location.

•

Communications Options

The UPS supports the following methods of
communication:

• SiteNet 1 (automatic, unattended shutdown)

• SiteNet 2 (Power Surveillance software)

• SiteNet SNMP (Simple Network Management

Protocol)

• Terminal / Modem Connection

SiteNet 1, SiteNet 2, terminal mode and modem operation
require the RS-232 Kit. This kit provides a plug-in
communications board that includes relays, serial
communications and a DB25 connector for interfacing to
the SiteNet software kits.

SiteNet 1 Shutdown Interface Kits

Each option kit includes a 10-foot communication cable
with connectors, necessary software for computer
interface to the UPS, and separate instructions for
installation and operation. A power failure will initiate a
pre-programmed timer. Then the software performs an
automatic, unattended, orderly shutdown. If the UPS
reaches a low battery condition, the software overrides the
timer and performs an orderly shut- down. The software
runs as a background task on the computer while
monitoring the UPS.

SiteNet 2 Power Surveillance

This option includes software to enable UPS monitoring
and control from a remote computer or workstation.
Contact a Liebert UPS supplier for more details including
availability for your computer or workstation

SiteNet SNMP (Simple Network Management Protocol)

The SiteNet SNMP internal agent allows for direct network
UPS management in an Ethernet environment. The
internally mounted SNMP agent provides true product
integration. It draws uninterruptible power from the UPS
and eliminates the need for a second UPS for the agent.
Remotely configure the agent via BOOTP and TFTP.
Configuration and bootstrap are stored in non-volatile
memory. The MIB is MIB II compliant. The SNMP option
ships with the MIB in DOS and TAR formats complete with
a configuration cable.

Terminal/Modem Connection

All information and functions accessed through the control
panel are also accessible by a terminal, host computer, or
modem through the RS-232 port. You may connect a
terminal or computer to the RS-232 port directly or through
a modem. The UPS dials out to a selected phone number
to report alarm conditions and connects when called from
a terminal.

The terminal shows a picture of the LCD display screen.
The UPS responds to the left arrow, right arrow, enter, and
escape keys on the keyboard just as it would from the
UPS control panel. View UPS meters and alarm history,
change configuration set- tings, and activate remote start,
stop, and transfer (if bypass is available) all from a remote
terminal.

Terminal Operation: Connect an ANSI terminal (or a
computer with an appropriate terminal emulator program,
e.g. ProComm) to the UPS directly or through a modem
connection. See Cables for connection details.
Set up the computer terminal as follows:

Baud rate: 2400 Data bits: 8
Stop bits: 1 Parity: none
Full duplex

The RS-232 interface can operate in terminal mode which
shows the LCD display on the screen, or ESP mode which
only qualified service personnel use. To use terminal
mode, press the space bar. The LCD display appears on
the screen and the left arrow, right arrow, enter, and
escape keys become operable. If the LCD display does
not appear, the RS-232 may be in ESP mode. Type EXIT
to return the RS-232 to terminal mode.

The UPS responds to requests such as viewing UPS
meters or alarm history. Some configuration selections
(other than voltage or frequency) can be changed during
UPS operation. Use the configuration screens UPS
ON(1)/OFF(0) and Transfer UPS to remotely turn the UPS
ON or OFF, or make transfers (if bypass is available).

Modem Operation: Connect the UPS to a remote
computer terminal through a modem link (one modem at
each end). See Cables for connection details. The UPS
automatically tests for a modem every three minutes,
when the communication channel is idle.

29

Use the following Modem Mode configuration screen to

1

2

14

Not Used

Not Used

Not Used

Not Used

Signal Ground

control modem operations:

Modem Mode: IN
1-[phone]
Site ID:
Your Location

The options of the first line of this screen are IN, OUT,
BOTH, or OFF. IN calls are from a remote terminal
operator to the UPS. OUT calls are alarms reported from
the UPS to a selected phone number with a modem
attached. BOTH enables both IN and OUT calls. OFF
disables modem connections, but a directly connected
computer terminal may still be used.

The second line allows entry of the phone number the
UPS calls when alarms occur. Remember to include a 9
or other characters if required. When initiating a call, the
UPS makes up to 3 attempts to connect, spaced 45 to 90
seconds apart, before giving up.

Enter the Site ID on the fourth line. The UPS includes
Site ID in OUT messages to distinguish multiple UPS’s
programmed to call the same phone number. Use up to
16 characters (letters, numbers, and spaces) for the Site
ID.

For terminal IN calls, the screen displays ”Press <SPACE
BAR> to enter terminal mode...”. Use the keyboard to get
information from the UPS or to perform remote ON, OFF,
or Transfer as described above. If no keys are pressed for
6 minutes, the UPS hangs up.

For UPS OUT calls, the receiving terminal beeps and
displays the message ”Press any key to enter terminal
mode...”. If no key is pressed within 10 seconds, the
terminal displays present alarm condition(s) information
along with the Site ID. The time of each alarm displays to
the nearest tenth of a second.

The event code(s) alarm description also display. Then
the message ”Press any key to enter terminal mode...”
displays again. Press a key to enter terminal mode, and
show the LCD display as described earlier in Terminal
Operation. If no keys are pressed for 45 seconds, the
UPS hangs up.

RS-232 with User-Configurable Relays - VCR232C

This provides user-selected contact closure output on the
RS-232 board, for use with remote monitoring devices.
The board also includes two relays. Program these relays
as NO or NC to activate upon any combination of these
alarms:

UPS on Battery
Low Battery
UPS on Bypass
Battery Test Fail
UPS Fail Overload

These relay outputs use an RJ45 connector. Connector
and 25’ pigtail supplied. Program the relays via the UPS
LCD display on the front panel.

Cables

• An optional factory-assembled 6-foot cable enables
connection to a modem.

• A factory-assembled splitter cable enables connection
to a modem (or terminal) and a Computer/LAN
interface.

• To assemble a customer supplied cable, refer to the
following instructions and Figure #5:

• For a modem cable, connect to pins 2, 3, 7, 8, 20, and

22. Connect Pin 2 on one end to pin 3 on the other
end (this applies to two wires). All other connections
are straight through.

For a terminal cable (direct connection, no modem)
connect to pins 2, 3, and 7. All connections are straight
through.

Data Carrier Detect (DCD)
Low Battery Common
Low Battery (NC)
Low Battery (NO)

Shutdown Active Low
Power Fail

Active High

Altos Tri-Level
On Bypass

Not Used
Ring Indicator (R)

Low Battery Active High
Data Terminal Ready (DTD)

8

7

11

1213

9

10

6

TXD
RXD

45

3

1516171819202122232425

Not Used
On UPS (NO)
On Battery (NO)

Common for On Battery,
On UPS, and On Bypass
On Battery (NC)

Shutdown Active High

30

External Battery Cabinets

3.5-6 kVA

8-12 kVA

15-18 kVA

(Cover Removed)

Power Terminal

(4) #14 - #4 per

WARNING: Remove UPS battery fuses and open the Battery
Cabinet circuit breaker before removing the battery cable
connectors cover plate. These connectors contain lethal
voltages when the circuit to the battery is complete.

Standard External Battery Cabinets

Battery

CB (35A)

Matching stand-alone cabinet(s) can be provided with
additional string(s) of low-maintenance batteries for additional
back-up time in conjunction with the UPS internal battery. Each
cabinet includes a fuse and a circuit breaker disconnect. The
UPS-to-battery cabinet wiring allows for cabinet location directly
adjacent to the UPS module. See Figures below and on the
following page. See Battery Time Curves in Appendix.

Battery

Fuse

(30A)

Battery

CB (30A)

External

Connectors

Rear
View

Battery

CB (70A)

External

Connectors

Battery

Fuse (70A)

VBS061 / VBS062

3.5-6 kVA

External

Connectors

Battery

Fuse (30A)

Rear View

Rear View

VBD121

8 - 12 kVA

Top View

VBD061

Top View

Battery

CB (30A)

Battery

Fuse

(30A)

External

Connectors

Rear View Top View

Battery

CB (100A)

Access

Plate for

Power

Cable

Entry

VBS122

Rear View

Battery
Fuse (100A)

Block Wire
Range:

Connection

Two Ground
Lugs Wire
Range:
(1) #14 - #1/0
Each

Battery
CB (100A)

Top View

VBD 181

31

Routine Maintenance

The Liebert UPStation S™ UPS should operate for years with minimum maintenance. Keep UPS clean and cool to
enhance system reliability. Occasionally vacuum dust from around ventilation grilles and wipe UPS with a dry cloth. Do
not use liquid or aerosol cleaning fluids.
Periodically check UPS operation by switching off utility power and observing the On Battery message. Do this with only
non-critical loads connected to the unit.

Liebert UPStation S™ Specifications

SYSTEM

Safety Agencies CSA 22.2, UL 1778 listed
Audible Noise 55 dBA at one meter
Transient/ Surge Protection Per IEEE 587/ANSI C62.41 Class A&B
Efficiency Minimum 87% at full load
PHYSICAL CHARACHTERISTICS (See Site Planing Data for dimensions and weight)
Operating Environment 0 degrees C to 40 degrees C
Relative Humidity 0 to 95% relative humidity (non-condensing)
Altitude 5000 feet without derating

AC INPUT

Voltage Range 176 to 264 VAC

Single phase, 3-wire plus ground (L1-L2-N-G)
Single phase, 2-wire plus ground (L1-N-G)

Voltage Configuration and Connection
Frequency Range 45 Hz to 65 Hz

Current THD 5% THD maximum at full load
Power Factor .98 typical

AC OUTPUT

Voltage Regulation Typically less than +/- 2%
Voltage Distortion Max. 3% THD for linear loads, max. 5% THD for full non-linear

Transient Response Less than +/- 5% for 100% step load; recovery to within 1% in 50
Frequency 50 Hz or 60 Hz

Frequency Slew Rate 1 Hz/sec (user-selectable 0.3 to 3 Hz/sec
Frequency Sync Rate +/- 1 Hz (user selectable +/- 0.1 Hz to 5 Hz
Load Crest Factor 3:1
Overload 125% for 10 minutes, 150% 10 seconds

BATTERY

Type Sealed, low maintenance, lead acid
Recharge Rate 10 times discharge duration to 95%
Battery Runtime Minimum 10 minutes at full load
Battery Voltage Nominal: 192 VDC Float: 220 to 230 VDC

Three phase, 4-wire plus ground (L1-L2-L3-N-G) (8-18 kVA only)
Three phase, 3-wire plus ground (L1-L2-L3-G) (8-18 kVA only)

loads
ms.

32

APPENDIX

NEC Wire Gauge Chart

Allowable Ampacities of Insulated Conductors Rated 0 – 2000 Volts, 60° to 90°C (140° to 194°F), not more than three

conductors in Raceway or Cable or Earth (Directly Buried), Based on Ambient Temperature of 30°C (86°F)

Size Temperature Rating of Conductor Size

AWG kcmll

18 - - 14 - - - ­16 - - 18 - - - ­14 20* 20* 25* - - - ­12 25* 25* 30* 20* 20* 25* 12
10 30 35* 40* 25 30* 35* 10

8 40 50 55 30 40 45 8
6 55 65 75 40 50 60 6
4 70 85 95 55 65 75 4
3 85 100 110 65 75 85 3
2 95 115 130 75 90 100 2

1 110 130 150 85 100 115 1
1/0 125 150 170 100 120 135 1/0
2/0 145 175 195 115 135 150 2/0
3/0 165 200 225 130 155 175 3/0
4/0 195 230 260 150 180 205 4/0

250 215 255 290 170 205 230 250
300 240 285 320 190 230 255 300
350 260 310 350 210 250 280 350
400 280 335 280 225 270 305 400
500 320 380 430 260 310 350 500
600 355 420 475 285 340 385 600
700 385 460 520 310 275 420 700
750 400 475 535 320 385 435 750
800 410 490 555 330 395 450 800

900 435 520 585 355 425 480 900
1000 455 545 615 375 445 500 1000
1250 495 590 665 405 485 545 1250
1500 520 625 705 435 520 585 1500
1750 545 650 735 455 545 615 1750
2000 560 665 750 470 560 630 2000

Ambient Temp.

°C

21-25 1.08 1.05 1.04 1.08 1.05 1.04 70-77
26-30 1.00 1.00 1.00 1.00 1.00 1.00 78-86
31-35 .91 .94 .96 .91 .94 .96 87-95
36-40 .82 .88 .91 .82 .88 .91 96-104

41-45 .71 .82 .87 .71 .82 .87 105-113
46-50 .58 .75 .82 .58 .75 .82 114-122
51-55 .41 .67 .76 .41 .67 .76 123-131
56-60 - .58 .71 - .58 .71 132-140
61-70 - .33 .58 - .33 .58 141-158
71-80 - - .41 - - .41 159-176

60 C° (140°F) 75°C (167°F) 90°C (194°F) 60°C (140°F) 75°C (167°F) 90°C (194°F)

Types: TW*, UF* Types: FEPW*,

For ambient temperatures other than 30° (86° F), multiply the allowable ampacities shown above by the appropriate factor shown

RH*, RHW*,
THHW*, THW*,
THWN*, XHHW*,
USE*, ZW*

Copper Aluminum or Copper-Clad Aluminum

Types: TA, TBS,

SA, SIS, FEP*,

FEPB*, MI, RHH*,
RHW-2, THHN*,

THHW*, THW-2,

THWN-2, USE-2,
XHH, XHHW*,

XHHW-2, ZW-2

CORRECTION FACTORS

Types: TW*, UF* Types: RH*,

below.

RHW*, THHW*,
THW*, THWN*,
XHHW*, USE*

Types: TA, TBS,

SA, SIS, THHN*,

THHW*, THW-2,

THWN-2, RHH*,

RHW-2, USE-2,
XHH, XHHW*,

XHHW-2, ZW-2

AWG kcmll

Ambient Temp. °C

*Unless otherwise specifically permitted elsewhere in this Code the overcurrent protection for conductor types marked with
an asterisk shall not exceed 15 amperes for No.14, 20 amperes for No.12, and 30 amperes for No.10 copper; or 15
amperes for No.12 and 25 amperes No. 10 aluminum and copper-clad aluminum after any correction factors for ambient
temperature and number of conductors have been applied.

Reprinted with permission from NFPA 70-1996, the National Electrical Code ®, Copyright 1995, National Fire Protection
Association, Quincy, MA 02269. This reprinted material is not the complete and official position of the National Fire
Protection Association on the referenced subject which is represented only by the standard in its entirety.

33

UPStation S 3.5 kVA

Runtime (mins.)

UPStation S 3.5 kVA

+(2) VBD061 Cabinets

+(2) VBS062 Cabinets

+(1) VBS 061 Cabinet

& (1) VBS062 Cabinet

100

Runtime (mins.)

PERCENT LOAD

UPStation S 4.5 kVA

Battery Run Times #2

+(2) VBD061 Cabinets

+(2) VBS062 Cabinets

+(1) VBS 061 Cabinet

& (1) VBS062 Cabinet

PERCENT LOAD

100

Battery Run Times #1

400

350

300

250

3.5 - 4.5 kVA Battery Run Times

Internal Batteries
+(1) VBD061 Cabinet

Internal Batteries
+(1) VBS062 Cabinet

Internal Batteries
+(1) VBS 061 Cabinet

Internal Batteries
Only

Battery Run Times #2

800

700

600

500

Internal Batteries

Internal Batteries

Internal Batteries

200

150

100

50

0

25 50 75

PERCENT LOAD

100

400

300

Runtime (mins.)

200

100

0

25 50 75

PERCENT LOAD

UPStation S 4.5 kVA
Battery Run Times #1

400

350

300

250

200

150

Internal Batteries
+(1) VBD061 Cabinet

Internal Batteries
+(1) VBS062 Cabinet

Internal Batteries
+(1) VBS 061 Cabinet

Internal Batteries
Only

800

700

600

500

400

300

Runtime (mins.)

Internal Batteries

Internal Batteries

Internal Batteries

100

50

0

25 50 75

100

200

100

0

25 50 75

34

UPStation S 6 kVA

Runtime (mins.)

UPStation S 6 kVA

+(2) VBD061 Cabinets

+(2) VBS062 Cabinets

& (1) VBS062 Cabinet

100

Runtime (mins.)

PERCENT LOAD

UPStation S 8 kVA

Battery Run Times #2

PERCENT LOAD

100

Internal Batteries

+ (4) VBD121 Cabinets

+(2) VBS 122 Cabinets

Battery Run Times #1

400

350

300

250

6 – 8 kVA Battery Run Times

Internal Batteries
+(1) VBD061 Cabinet

Internal Batteries
+(1) VBS062 Cabinet

Internal Batteries
+(1) VBS 061 Cabinet

Internal Batteries
Only

Battery Run Times #2

600

525

450

375

Internal Batteries

Internal Batteries

Internal Batteries
+(1) VBS061 Cabinet

200

150

100

50

0

25 50 75

PERCENT LOAD

100

300

225

Runtime (mins.)

150

75

0

25 50 75

PERCENT LOAD

UPStation S 8 kVA
Battery Run Times #1

400

350

300

250

200

150

Internal Batteries
+(1) VBD122 and (1)
VBD121 Cabinet

Internal Batteries
+(1) VBS121 Cabinet

Internal Batteries
+(1) VBS122 Cabinet

Internal Batteries
Only

800

700

600

500

400

300

Runtime (mins.)

Internal Batteries
+(3) VBD121 Cabinets

Internal Batteries
+(2) VBD 122 Cabinet

Internal Batteries

100

50

0

25 50 75

100

200

100

0

25 50 75

35

10 – 12 kVA Battery Run Times

Runtime (mins.)

+(4) VBD121 Cabinets

+(3) VBD121 Cabinets

100

Runtime (mins.)

PERCENT LOAD

UPStation S 12 kVA

Battery Run Times #2

PERCENT LOAD

100

Internal Batteries

Internal Batteries

+(2) VBS122 Cabinets

UPStation S 10 kVA
Battery Run Times #1

400

350

300

250

200

150

100

50

0

25 50 75

PERCENT LOAD

Internal Batteries
+(1) VBS122 and (1)
VBD121 Cabinet
Internal Batteries
+(1) VBD121 Cabinet

Internal Batteries
+(1) VBS122 Cabinet

Internal Batteries Only

100

UPStation S 10 kVA
Battery Run Times #2

800

700

600

500

400

300

Runtime (mins.)

200

100

0

25 50 75

PERCENT LOAD

Internal Batteries

Internal Batteries

Internal Batteries
+(2) VBD121 Cabinet

UPStation S 12 kVA
Battery Run Times #1

240

210

180

150

Internal Batteries
+(1) VBS122 and (1)
VBD121 Cabinet

Internal Batteries
+(1) VBD121 Cabinet

Internal Batteries
+(1) VBS122 Cabinet

Internal Batteries Only

600

525

450

375

+ (4) VBD121 Cabinets

Internal Batteries
+(3) VBD121 Cabinets

Internal Batteries
+(2) VBD122 Cabinet

Internal Batteries
+(2) VBS122 Cabinets

120

90

60

30

0

25 50 75

100

300

225

Runtime (mins.)

150

75

0

25 50 75

36

18 kVA Battery Run Times

Runtime (mins.)

+(4) VBD181 Cabinets

+(3) VBD181 Cabinets

100

Runtime (mins.)

PERCENT LOAD

UPStation S 18 kVA

Battery Run Times #2

PERCENT LOAD

100

Internal Batteries

+ (4) VBD181 Cabinets

UPStation S 15 kVA
Battery Run Times #1

160

140

120

100

80

60

40

20

0

25 50 75

PERCENT LOAD

Internal Batteries
+(1) VBD181 Cabinet

Internal Batteries
Only

100

UPStation S 15 kVA
Battery Run Times #2

480

420

360

300

240

180

Runtime (mins.)

120

60

0

25 50 75

PERCENT LOAD

UPStation S 18 kVA
Battery Run Times #1

160

140

120

Internal Batteries
+(1) VBD181 Cabinet

Internal Batteries
Only

400

350

300

Internal Batteries

Internal Batteries

Internal Batteries
+(2) VBD181 Cabinet

Internal Batteries
+(3) VBD181 Cabinets

Internal Batteries
+(2) VBD181 Cabinets

100

80

60

40

20

0

25 50 75

100

250

200

150

Runtime (mins.)

100

50

0

25 50 75

37

Alarm Messages, Meanings, and Corrective Actions

MESSAGE MEANING CORRECTIVE ACTION

Start-Up Sequence Aborted The UPS detects a condition that prevents a

Site Wiring Error Incorrect phasing sequence of power conductors

Start-Up

Incorrect Input Frequency Input power frequency outside acceptable range. Select the correct frequency in the configuration

Input Power Out of Tolerance Input power frequency outside acceptable range.

AC

Battery Failed Test Automatic Battery Test detects a weak battery. Repeat the battery test via the LCD “Test Options”

Can’t execute battery test:

not recharged

Battery Date Expired Batteries are over 5 years old. Contact Liebert at 1-800-222-5877 to replace

UPS On Battery Time

Remaining:

Battery

Charger Battery Voltage High Battery voltage exceeds acceptable limits causing

WARNING: Load On Bypass Load currently powered through bypass line due

Bypass

UPS System

Fault: SYSTEM SHUTDOWN UPS detects and fault and shuts down resulting in

System Shutdown Impending

**

*

XX Minutes

Low Battery Shutdown UPS discharged battery to minimum allowable

Bypass power out of

tolerance

Bypass out of Sync

Bypass Overload At least one phase of bypass current overloaded. Reduce the load.

Excessive Retransfer

Attempted

System Shutdown

Press ON to Restart System

Output Undervoltage

Output Overvoltage

Overload Phase A
Overload Phase B

Output Overload

Logic Error Automatic diagnostic testing detects a hardware

External Shutdown External contact shuts down UPS through REPO. Start-up UPS after correcting cause of external

Due to Overtemp

Dial-Out Attempt Failed UPS unsuccessfully attempted to dial out due to

complete start-up.

wired to UPS.

UPS battery supplying power to load equipment.

Battery discharged too recently to perform test. No corrective action required. UPS will perform

Battery discharging. UPS calculates and displays
remaining battery time.

voltage and automatically shut down. No power
supplied to load.

automatic charger shutdown. Charger
automatically restarts when battery voltage return
to acceptable levels.

to automatic or manual transfer to bypass. Load
unprotected from power disturbances or outages.

Bypass power voltage or frequency outside
acceptable limits. Automatic bypass transfer
prohibited.

UPS completed at least 15 attempts to retransfer
load from utility back to UPS in 20 minutes or
less. UPS unable to sustain load due to overload
or inverter failure. Load remains on bypass.
Power Factor Corrector detects temporary
condition at input of UPS.

UPS output voltage or current outside acceptable
limits. Load automatically transferred to bypass.
UPS attempts automatic retransfer when voltage
or current is within acceptable limits.
Overload. UPS automatically transfers load to
bypass if overload exceeds UPS capacity.

loss of power to load.
or software failure in UPS internal control system

UPS cabinet temperature above acceptable limits.
UPS automatically shuts down in 2 minutes if
over-temperature continues.

an event.

Review and record all alarm messages. Perform
prescribed action for specified alarm. If Start up
still aborts, contact Liebert at 1-800-222-5877.
Disconnect power from the UPS and call a
qualified electrician to correct and verify the
wiring.

screen. Verify the utility frequency.
No corrective action required.

menu selection. If battery fails again, contact
Liebert at 1-800-222-5877.

next scheduled battery test.
batteries.

Perform and orderly shutdown of load equipment
before time expires or shut off unnecessary load
equipment to extend battery time.
Upon return of power, start up UPS. The UPS
starts up by itself if Auto-Restart is enabled.

Contact Liebert at 1-800-222-5877 if this condition
persists for more than 2 minutes.

If automatic transfer to bypass, load returns to
UPS power control for most temporary conditions.
Review and record any other alarm messages. If
manual transfer to bypass, return to UPS power
control when possible.
Manual transfer to bypass not recommended.
Wait for bypass power to return.

Check other messages for inverter failure.
Determine cause of overload and reduce load.

Press ON button to restart system. If start-up
aborts, review and record alarm messages and
contact Liebert at 1-800-222-5877.
If UPS is unable to correct either one of these
conditions, contact Liebert at 1-800-222-5877.

Determine cause of overload and reduce load.

Review and record alarm messages and contact
Liebert at 1-800-327-4384
Contact Liebert at 1-800-222-5877

shut-down.
Check for restricted air flow or fan failure. If none,
contact Liebert at 1-800-222-5877

Usually, the dial-out phone line is simply busy.
Check for secure and correct modem connection.

UPStation® S

Worldwide Support 614-841-6755

Germany [phone]

Netherlands [phone]

Web site http://www.liebert.com

Worldwide FAX tech support [phone]

The Company Behind The Products

Power Protection

U.S.A. 1-800-222-5877

U.K. [phone]

France [phone]

Italy [phone]

E-mail [e-mail]

With more than 500,000 installations around
the globe, Liebert is the world leader in
computer protection systems. Since its
founding in 1965, Liebert has developed a
complete range of support and protection
systems for sensitive electronics:

§ Environmental systems: close-control air
conditioning from 1.5 to 60 tons.

§ Power conditioning and UPS with power
ranges from 250 VA to more than 1000
kVA.

§ Integrated systems that provide both
environmental and power protection in a
single, flexible package.

§ Monitoring and control — on-site or remote
— from systems of any size or location

§ Service and support, through more than
100 service centers around the world, and
a 24-hour Customer Response Center.

While every precaution has been taken to
ensure accuracy and completeness of this
literature, Liebert Corporation assumes no
responsibility, and disclaims all liability for
damages resulting from use of this information
or for any errors or omissions.

© 1997 Liebert Corporation. All rights reserved
throughout the world. Specifications subject to
change without notice.

® Liebert and the Liebert logo are registered
trademarks of Liebert Corporation. All names
referred to are trademarks or registered
trademarks of their respective owners.

SL-24870 (2/98) Rev. 2