Emerson Liebert FPC User Manual

AC Power
For Business-Critical Continuity™

Liebert FPC

User Manual - 15 kVA - 300kVA, 3 Phase, 50 & 60 Hz

™

TABLE OF CONTENTS

1.0 INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1 Unpacking and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1.1 Unpacking and Preliminary Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1.2 Handling Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1.3 Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1.4 Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1.5 Floor Pedestal Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2 Additional Distribution Mounting & Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2.1 Liebert FDC Distribution Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2.2 Distribution Cabinet Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.3 Power and Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.3.1 Input Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.3.2 Junction Box Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.3.3 System Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.3.4 Grounding Electrode Conductor for FPCs With Transformer . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.3.5 Output Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.3.6 Control Wiring Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.0 EQUIPMENT INSPECTION AND STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.1 Internal Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.2 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.0 INSPECTION AND STARTUP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.2 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.3 Monitoring System Check-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.4 Equipment Connection Check-Out of Units With Distribution Cables. . . . . . . . . . . . . . . . . 28

4.0 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

4.1 Startup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.1.1 Emergency Shutdown—If Emergency Power Off switch is supplied . . . . . . . . . . . . . . . . . . . 29

4.1.2 Normal System Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.1.3 Normal System Turn ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.1.4 Manual Restart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.2 Basic Monitor Panel (Units Without Monitoring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.3 Power Monitor Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

5.1 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.2 Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.2.1 Inspection Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

i

FIGURES

Figure 1 Typical cabinet and floor planning dimension data, 23" (584mm) cabinet, 15-125 kVA . . . . . . . . 3

Figure 2 Typical cabinet and floor planning dimension data, 47" (1194mm) cabinet 50-300kVA . . . . . . . . 4

Figure 3 Recommended minimum service and ventilation clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4 Floor pedestal details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 5 Electrical connection location for 23" (584mm) cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6 Electrical connection location for 47" (1194mm) cabinet—Front view . . . . . . . . . . . . . . . . . . . . . 10

Figure 7 Electrical connection location for 47" (1194mm) cabinet—Rear view . . . . . . . . . . . . . . . . . . . . . . 10

Figure 8 Electrical connection location for 47" cabinet with SqD I-Line panelboard—Front view. . . . . . . 11

Figure 9 Electrical connection location for 47" cabinet with SqD I-Line panelboard—Rear view . . . . . . . 11

Figure 10 Low voltage control junction box connections, typical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 11 Main input junction box connections, typical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 12 Typical grounding arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 13 Typical Liebert FPC equipment arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 14 Simplified shutdown circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 15 Typical control wiring for units without monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 16 Typical control wiring for units with monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 17 Basic monitoring panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 18 Power monitor panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

TABLES

Table 1 23-inch cabinet weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 2 47-inch cabinet weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 3 Liebert FPC heat output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4 Suggested minimum input wire size data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 5 Main input circuit breaker interrupting rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6 Main input junction box electrical connections (4 wire) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 7 Main input junction box without transformer electrical connections (5 wire) . . . . . . . . . . . . . . . 14

Table 8 Low-voltage (control) junction box dimensions, typical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 9 Main input (power) junction box dimensions, typical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 10 Minimum grounding electrode conductor size (AWG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 11 Panelboard main circuit breaker torque specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 12 Branch circuit breaker torque specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 13 Terminal block compression lug torque specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 14 Torque specifications, general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 15 ASCII interface default parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 16 RS-232 ASCII port customer commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 17 Monitored parameters data definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

ii

IMPORTANT SAFETY INSTRUCTIONS

NOTE

Read the entire manual before installing or operating the system.

WARNING

!

The shipping bands may be under tension. Use appropriate eye, face, and hand protection to
safeguard against injury from band backlash.

WARNING

!

Verify that all incoming line voltage (power) and low-voltage (control) circuits are
de-energized and locked out before installing cables or making connections, whether in the
junction box or in the unit.

Equipment inspection and start-up should be performed only by trained personnel. Lethal
voltages are present during start-up procedures. Electrical safety precautions must be
followed throughout inspection and startup.

Only qualified service personnel should perform maintenance on the Liebert FPC system. All
voltage sources to the unit must be disconnected before inspecting or cleaning within the
cabinet.

Lethal voltages exist within the equipment during operation. Observe all warnings and
cautions in this manual. Failure to comply may result in serious injury or death. Obtain
qualified service for this equipment as instructed.

The monitoring system contains a lithium battery for memory backup. There is a danger of
explosion if battery is incorrectly replaced. Replace only with same or equivalent type.
Dispose of used batteries according to the manufacturer’s instructions.

NOTE

The unit should not be loosened from the shipping pallet until all handling by fork lift or pallet
jack is completed.

All power and control wiring should be installed by licensed electricians and must comply with
the NEC and applicable codes.

1

1.0 INSTALLATION INSTRUCTIONS

1.1 Unpacking and Installation

NOTE

Read the entire manual before installing and operating the system. Upon receipt of a Liebert
FPC™, the installer should perform the following steps to ensure a quality installation.

1.1.1 Unpacking and Preliminary Inspection

A quality installation begins on the receiving dock.

1. Inspect the shipping crate(s) for damage or signs of mishandling before unpacking the unit(s).
Check the Shock-Watch™ indicator.

2. Remove the packing and inspect the equipment for any obvious shipping damages.

3. If the FPC was shipped in an export crate, open the shipping crate carefully.
Use care to avoid puncturing the container with sharp objects that would damage the contents.

4. Remove the packing and vapor barriers and inspect the equipment for any obvious shipping
damages.

NOTE

The units should not be loosened from the shipping pallet until all handling by fork lift or
pallet jack is completed. Complete internal inspection should be accomplished only after
equipment positioning and prior to electrical hookup.

Installation Instructions

5. If any damage is observed, immediately file a damage claim with the shipping agency and forward
a copy to:

Liebert Corporation
1050 Dearborn Drive
P.O. Box 29186
Columbus, Ohio 43229 USA

1.1.2 Handling Considerations

The Liebert FPC™ (and cables, if furnished) is bolted to a wooden pallet to allow handling by forklift
equipment.

The Liebert FPC and cable reels are furnished with casters to allow the unit to be rolled into place
after it has been unbolted from the pallet. The FPC should be kept on the shipping pallet until it has
been moved by forklift as close as practical to its installation location.

Refer to the cabinet drawings furnished with the FPC for the unit’s size and weight. Typical cabinet
dimensions and weights are shown in Figures 1 and 2.

The route to the FPC’s installation area should be planned to ensure that all passages, including door­ways, elevators, ramps and hallways, are large enough to accommodate the unit and that the floors
are strong enough to support the weight. Determine whether any corners or offsets would cause prob­lems in maneuvering the unit.

Liebert recommends removing the exterior side panels, if supplied, before the unit is moved. This will
prevent scratches, dents and other damage to the panels.

2

Installation Instructions

Figure 1 Typical cabinet and floor planning dimension data, 23" (584mm) cabinet, 15-125 kVA

Overall Dim.
39-1/2" (1003mm)
Including hinge
and bezel
projection

Overhead clearance
of 18" (457mm)
recommended
for cooling airflow

Minimum side
clearance of 42" (1067mm)
recommended for service access
if unit is equipped with
distribution monitoring option

Shaded areas indicate
recommended clearance
of 42" (1067mm) at front and
rear for service access

Cabinet Dimensional Data

23-1/2"

(597mm)

Unit Base Outline

36.4"

(925mm)

Overall Dimension

25.2" (640mm)
including side
panels

78-1/2" (1995mm)

For units with bottom
cable access, clearance
of 6" (152mm) below
unit is recommended
for cooling airflow
and cable entry/exit

34" (864mm)

1.2"

(30mm)

Front

Footprint and Floor
Cutout Dimensions

1.2"

(30mm)

6"

(152mm)

11-1/2" (292mm)

Shaded area indicates
cable access and
cooling airflow

6" (152mm)

36.4" (925mm)

Unit Base Outline

Floor Pedestals
available from
6" (152mm) to 18"
(457mm)

Table 1 23-inch cabinet weight

Unit

kVa

15 1010 (458) 1060 (480) 750 (340)

30 1090 (494) 1140 (517) 750 (340)

50 1160 (526) 1235 (560) 750 (340)

75 1350 (612) 1450 (658) 800 (363)

100 1540 (699) 1665 (755) 800 (363)

125 1650 (748) 1775 (805) 800 (363)

23-1/2" (597mm)

Front

Weight, lb (kg)

60Hz 50Hz

Optional Floor Pedestals

3.2" (81mm)

8.3"

(211mm)

Dia. location
3/4" (19mm)
typical

6" (152mm) 6" (152mm)

Without

Transformer

.56" (14mm)
diameter; 4 holes
typical

3

Installation Instructions

Figure 2 Typical cabinet and floor planning dimension data, 47" (1194mm) cabinet 50-300kVA

Overall Dimension
Overall Dim.
39-1/2" (1003mm)
Including hinge
and bezel
projection

48.6" (1235mm)

including side panels

1.3"

(33mm)

6" (152mm)

33.8" (859mm)

Overhead clearance
of 18" (457mm)
recommended
for cooling airflow

Minimum side clearance

78-1/2"

(1995mm)

1.3"

(33mm)

Front

Footprint and Floor
Cutout Dimensions

35" (889mm)

6" (152mm)

Shaded area indicates
cable access and
cooling airflow

of 42" (1067mm) recommended
for service access if unit is
equipped with distribution
monitoring option

For units with bottom
cable access, clearance

Shaded areas indicate
recommended clearance
of 42" (1067mm) at front and
rear for service access

47"

(1194mm)

Unit Base Outline

36.4"

(925mm)

of 6" (152mm) below
unit is recommended
for cooling airflow
and cable entry/exit

Cabinet Dimensional Data

36.4" (925mm)

Unit Base Outline

Front

Floor Pedestals
available from
6" (152mm) to
18" (457mm)

Optional Floor Pedestals

Table 2 47-inch cabinet weight

Unit
kVA

50 1891 (858) 1966 (892) 1335 (606)

75 1995 (905) 2095 (950) 1335 (606)

100 2191 (994) 2316 (1051) 1335 (606)

125 2298 (1042) 2423 (1099) 1360 (617)

150 2490 (1129) 2640 (1198) 1360 (617)

200 2610 (1184) 2810 (1275) 1360 (617)

225 2800 (1270) 3000 (1361) 1390 (631)

300 2845(1290) 3045 (1381) 1390 (631)

60 Hz 50 Hz Without Transformer

47" (1194mm)

43.8"

(1112mm)

Weight, lb (kg)

1.5" (38mm)

2.3" (58mm)

Dia. location
3/4" (19mm)
typical

9/16" (14mm)
diameter; 4 holes
typical

6" (152mm)

6" (152mm)

4

1.1.3 Unit Preparation

The Liebert FPC may be easily removed from the shipping pallet and installed by customer person­nel. A typical procedure is as follows:

1. Set the palletized assembly in a level area where there is enough room to roll the Liebert FPC and
entire cable assembly off the pallet onto the floor.

2. Cut the shipping bands.

WARNING

!

The shipping bands may be under tension and may snap violently when cut. Use eye, face and
hand protection to guard against injury when the bands are cut.

3. Remove the factory-provided ramp from its shipping position.
One ramp is provided for every five units. Ramps are packed either in front of or on top of a set of

cable reel(s).

4. Place the ramp adjacent to the pallet to provide a smooth path from pallet to floor.

5. Remove side panels from the Liebert FPC, if supplied. An Allen wrench for the side panels is
furnished in the installation packet.

6. Remove the bolts and two mounting brackets holding the unit to the shipping pallet.
Mounting brackets are located on either side of the unit.

7. If cables are on wheeled cable reel(s), remove the bolts holding the reel(s) to the pallet and remove
the nailed-on shipping blocks.

8. Roll the unit off the pallet onto the floor, carefully guiding the cable reel(s) after it.

9. Roll the FPC and the cable reel(s) to the installation area. For units to be placed on a raised floor,
use care when positioning unit over the floor cutout to prevent the casters from falling through
the cutout.

Installation Instructions

CAUTION

!

Before maneuvering the unit into its final position, read and follow all advisories in 1.1.4 ­Location Considerations.

1.1.4 Location Considerations

The Liebert FPC should be placed near the load(s) it will supply, preferably within the data center.

Equipment location should employ the shortest output distribution cable runs consistent with logical
equipment arrangement and allowance for expansion.

The FPC is intended for indoor installation in an area with ambient temperatures of 32°F to 104°F
(0°C to 40°C) with a relative humidity of 0% to 95% (non-condensing).

Bottom clearance is required for units with bottom entry/exit of cables. This clearance may be pro­vided by a raised floor at least 6" (150mm) high. Figures 1 and 2 show the typical raised-floor cutout
dimensions for cables and cooling airflow.

When units are not installed on a raised floor, or if the raised floor will not support the unit, optional
floor pedestals may be used. (CSA regulations require FPC arrangements employing a raised floor.
Non-raised floor applications are not CSA approved.) Units with top cable exit provisions do not
require bottom clearance.

Recommended minimum service clearances are shown in Figure 3. The National Electrical Code
(NEC) requires the indicated front and rear clearances for service access. Clearance above the unit is
required for cooling airflow (exhaust). Units with optional distribution monitoring also require service
access clearance on the left side.

As do all electrical devices, the Liebert FPC produces heat under normal operation. (See Table 3.)
This heat must be accounted for when calculating the environmental conditions of the room.

5

Figure 3 Recommended minimum service and ventilation clearances

Minimum clearance
of 18" (457mm)
above unit is
recommended for
cooling airflow

See Notes 2
and 3.

Installation Instructions

Front and rear access
is required. See
Notes 1 and 2.

NOTE

1. Service access is required at the front and rear.

2. Service access clearance dimensions: 36" (914mm) for units up to 150V to ground. 42"
(1067mm) for units over 150V to ground.

3. Service access is required on the left side, if unit is equipped with Liebert Distribution
Monitoring Option.

Table 3 Liebert FPC heat output

Full Load

Unit kVA

15 2,500 (0.73)

30 4,600 (1.35)

50 6,200 (1.82)

75 8,150 (2.39)

100 9,900 (2.90)

125 11,500 (3.37)

150 12,500 (3.66)

200 15,500 (4.54)

225 15,800 (4.63)

300 18,450 (5.40)

Heat Output
BTU/Hr (kW)

Minimum clearance
of 6" (152mm) below
unit is recommended
for cable entry and exit

6

1.1.5 Floor Pedestal Installation

Floor pedestals are optional equipment that provide clearance for bottom cable entry or exit for FPC
units not installed on raised flooring. The pedestals are adjustable over a limited range (approxi­mately 3-1/2" [89mm]) to allow leveling the FPC and minor adjustments in the unit’s installed height.

CAUTION

!

Floor pedestals may be reverse-assembled for shipping. Before installation, the pedestals
should be reassembled as shown in Figure 4. When the pedestal is properly assembled, the
washer on top of the welded nut provides a bearing surface for the unit’s weight.

1. Insert the pedestal threaded shaft into the pedestal holes in the cabinet base as shown in
Figures 1 and 2.

2. Adjust the pedestal height by turning the welded nut/shaft assembly into or out of the pedestal
base as required.

3. Lock the height by tightening the jam nut against the pedestal base.
The pedestal may be anchored to the floor by means of the four holes in the base. Locations of

floor pedestals are shown in Figures 1 and 2.

Figure 4 Floor pedestal details

Installation Instructions

3"

(76m m)

Threaded
Shaft

Washer

Welded Nut

Jam Nut

Pedestal
Base

.56" ( 14 mm)
diam eter
mounting holes

2-1/4"

(57mm)

6"

(152mm)

square

2-1/4"

(57mm)

2-1/ 4"

(57mm)

2-1/4"

(57mm)

7

1.2 Additional Distribution Mounting & Wiring

For Liebert FPCs with more than four panelboards, the additional panelboards are furnished in Lie­bert FDC enclosures, which are shipped separately from the Liebert FPC.

1.2.1 Liebert FDC Distribution Mounting

The Liebert FDC distribution cabinet has the same base dimensions as a 23" (584mm) cabinet FPC
(23-1/2" wide x 38" deep [597 x 965mm]) and may be mounted on either the left or right side of the FPC.

1. Provide a floor cutout for exit of output cables, as shown in Figure 1.

2. Remove the side panel, internal panel and the lower panel bracket from the FPC.

3. Remove the FDC side panel and internal panel, if supplied, and align the FDC with the FPC and
bolt the units’ frames together (hardware provided by others).

If floor pedestals are used for the FPC, two additional floor pedestals are required for the outside
corners of the FDC. See Figure 1.

4. Install the lower panel bracket on the opposite side of the FDC cabinet.

5. Make electrical connections. For details, see “Electrical Field Connections” drawings supplied
with the unit.

6. Install the FPC side panel on the FDC cabinet.

1.2.2 Distribution Cabinet Electrical Connections

Five field-supplied conductors (3-phase conductors, neutral and ground) are needed to connect the
FDC cabinet to the FPC cabinet in the field.

For Liebert FPCs with transformers, the distribution cabinet phase conductors are connected directly
to the transformer terminals:

Phase A to X1
Phase B to X2
Phase C to X3

The FDC’s neutral and ground conductors are connected to the FPC’s neutral busbar and main
ground busbar (see unit wiring diagram for location).

For Liebert FPCs without transformers, the distribution cabinet phase and neutral conductors are
connected to the corresponding output power distribution terminal blocks inside the FPC. The distri­bution cabinet ground conductor is connected to the main ground busbar.

For all Liebert FPCs with current monitoring, route each distribution cabinet conductor through the
appropriate current transformer (CT) in the FPC.

Installation Instructions

NOTE

Distribution cabinet conductors must pass through the current transformers in the same
direction as the FPC panelboard conductors. Use the existing FPC panelboard wiring for
reference.

1.3 Power and Control Wiring

Power and control wiring should be installed by licensed electricians. All power and control wiring
must comply with the NEC and applicable local codes.

1.3.1 Input Power Connections

If the FPC is furnished with a main input junction box, input power connections are made as detailed
in 1.3.2 - Junction Box Installation.

If a junction box is not furnished, the input power feeder is connected to the main input circuit
breaker located inside the FPC. (See Figures 5 through 8.)

WARNING

!

Verify that all incoming line voltage (power) and low-voltage (control) circuits are
de-energized and locked out before installing cables or making connections, whether in the
junction box or in the FPC.

8

To minimize disturbances from other loads in the building, the 3-phase power input to the FPC
should be supplied directly from the service entrance or other power source (a dedicated power
feeder).

The input feeder circuit should be sized in accordance with the NEC and any local building codes to
ensure the feeder’s ability to safely carry the system’s full load current, including losses.

Input feeder conductors should be sized for no more than 2% voltage drop. If operation at undervolt­age conditions for extended periods of time is desired, the input feeders must be oversized.

Typical conductor size data is shown in Table 4. All connections must comply with the NEC and all
other applicable codes.

For units with a transformer, the main input feeder should consist of 3-phase conductors and one
(safety) ground conductor (3W + G).

For units without a transformer, the main input feeder must consist of 3-phase conductors, one neu­tral and one (safety) ground conductor (4W + G).

Figure 5 Electrical connection location for 23" (584mm) cabinet

Installation Instructions

15006 - Rev. 0

9

Figure 6 Electrical connection location for 47" (1194mm) cabinet—Front view

Installation Instructions

FPC15000 Rev. 0

Figure 7 Electrical connection location for 47" (1194mm) cabinet—Rear view

10

FPC15000 Rev. 0

Installation Instructions

Figure 8 Electrical connection location for 47" cabinet with SqD I-Line panelboard—Front view

FPC15002 Rev. 0

Figure 9 Electrical connection location for 47" cabinet with SqD I-Line panelboard—Rear view

Square “D”
I-Line Panelboard

1.75"

(44.4mm)

(22mm)

1.75"

(44.4mm)

.88"

(22mm)

.88"

3.28" (83mm)

3.28" (83mm)

Detail B

Output Ground Busbar

Approx. 1/4" Thick

FPC15002 Rev. 0

11

Table 4 Suggested minimum input wire size data

Units with Transformers Transformerless Units

Installation Instructions

kVA

15

30

50

75

100

125

Input

Voltage

Input

FLA

Input

OPD

Suggested Feeder

Wire Size (AWG)

Full Load

Amps

MIB Trip

Amps

Suggested Feeder

Wire Size (AWG)

208 43 60 #6 AWG 42 60 #6 AWG

240 38 50 #8 AWG - - -

380 24 30 #10 AWG 23 30 #10 AWG

400 23 30 #10 AWG 22 30 #10 AWG

415 22 30 #10 AWG 21 30 #10 AWG

480 19 25 #10 AWG - - -

600 15 20 #12 AWG - - -

208 87 110 #2 AWG 83 110 #2 AWG

240 75 100 #2 AWG - - -

380 48 60 #6 AWG 46 60 #6 AWG

400 45 60 #6 AWG 43 60 #6 AWG

415 44 60 #6 AWG 42 60 #6 AWG

480 38 50 #8 AWG - - -

600 30 40 #8 AWG - - -

208 145 200 #3/0 AWG 139 175 #2/0 AWG

240 125 175 #2/0 AWG - - -

380 79 100 #2 AWG 76 100 #2 AWG

400 75 100 #2 AWG 72 90 #2 AWG

415 72 90 #2 AWG 70 90 #2 AWG

480 63 80 #4 AWG - - -

600 50 70 #4 AWG - - -

208 215 300 350 kcmil 208 300 350 kcmil

240 186 250 250 kcmil - - -

380 118 150 #1/0 AWG 114 150 #1/0 AWG

400 112 150 #1/0 AWG 108 150 #1/0 AWG

415 108 150 #1/0 AWG 104 150 #1/0 AWG

480 93 125 #1 AWG - - -

600 74 100 #2 AWG - - -

208 286 400 (2) #3/0 AWG * 278 350 (2) #2/0 AWG *

240 248 350 (2) #2/0 AWG * - - -

380 157 200 #3/0 AWG 152 200 #3/0 AWG

400 149 200 #3/0 AWG 144 200 #3/0 AWG

415 143 200 #3/0 AWG 139 175 #2/0 AWG

480 124 175 #2/0 AWG - - -

600 99 125 #1 AWG - - -

208 358 450 (2) #4/0 AWG * 347 450 (2) #4/0 AWG *

240 310 400 (2) #3/0 AWG * - - -

380 196 250 250 kcmil 190 250 250 kcmil

400 186 250 250 kcmil 180 225 #4/0 AWG

415 179 225 #4/0 AWG 174 225 #4/0 AWG

480 155 200 #3/0 AWG - - -

600 124 175 #2/0 AWG - - -

12

Table 4 Suggested minimum input wire size data (continued)

Units with Transformers Transformerless Units

Installation Instructions

kVA

Input

Voltage

Input

FLA

Input

OPD

Suggested Feeder

Wire Size (AWG)

Full Load

Amps

MIB Trip

Amps

Suggested Feeder

Wire Size (AWG)

208 427 600 (2) 350 kcmil * 416 600 (2) 350 kcmil *

240 370 500 (2) 250 kcmil * - - -

380 234 300 350 kcmil 228 300 350 kcmil

150

400 223 300 350 kcmil 217 300 350 kcmil

415 215 300 350 kcmil 209 300 350 kcmil

480 185 250 250 kcmil - - -

600 148 200 #3/0 AWG - - -

380 312 400 (2) #3/0 AWG * 304 400 (2) #3/0 AWG *

400 297 400 (2) #3/0 AWG * 289 400 (2) #3/0 AWG *

200

415 286 400 (2) #3/0 AWG * 278 350 (2) #2/0 AWG *

480 247 350 (2) #2/0 AWG * - - -

600 197 250 250 kcmil - - -

380 352 450 (2) #4/0 AWG * 342 450 (2) #4/0 AWG *

400 334 450 (2) #4/0 AWG * 325 450 (2) #4/0 AWG *

225

415 322 450 (2) #4/0 AWG * 313 400 (2) #3/0 AWG *

480 278 350 (2) #2/0 AWG * - - -

600 222 300 350 kcmil - - -

380 469 600 (2) 350 kcmil * 456 600 (2) 350 kcmil *

400 446 600 (2) 350 kcmil * 433 600 (2) 350 kcmil *

300

415 430 600 (2) 350 kcmil * 417 600 (2) 350 kcmil *

480 372 500 (2) 250 kcmil * - - -

600 297 400 (2) #3/0 AWG * - - -

* Parallel feeders per NEC 300-20 and 310-4
FLA = Full Load Amps of Power Center
OPD = Overcurrent Protection Device inside FPC
Wire sizes based on NEC 2005, Table 310-16, using 75°C copper conductor

1. Main input power feeder should be a dedicated feeder direct from service entrance or other power source possible

2. Ground conductors recommended to be insulated conductors run with power conductors for increased system performance. Ground
conductor minimum size per NEC Table 250-66. Input power feeder conduit may be used as the safety ground conductor. When conduit
is used, adequate electrical continuity must be maintained at conduit connections to enclosures and throughout conduit run.

3. Input feeder wire size listed in this table is the minimum feeder size recommended. Larger wire size may be required because of voltage
drop or supply overcurrent protection device.

4. For transformerless units with 3-phase 4W + G input feeder larger wire size may be required because of excessive neutral current (see
NEC Table 310-15 note 4: For best performance, the unit should be located as close to load as practical.

Table 5 Main input circuit breaker interrupting rating

Standard interrupting rating*

208V 480V 380-415V 600V

65 kA 35 kA 35 kA 18 kA

* Refer to unit specification sheet for units equipped
with non-standard main input breakers.

13

1.3.2 Junction Box Installation

Main input (power) and low-voltage (control) junction boxes are available for the Liebert FPC to sim­plify customer connections.

The junction boxes, if used, can either be shipped with the system or can be advance-shipped for
installation during the roughing-in stage of new construction.

Liebert supplies flexible, 10-foot-long (3m) conduit with cables for connecting the junction boxes to the
unit. The junction boxes should be installed a maximum of 8 ft. (2.4m) from the feeder entrance of the
unit.

Liebert recommends centering the junction boxes under a floor tile that is easily removed.

Junction box connections must be installed in compliance with the NEC and all other applicable
codes.

WARNING

!

Verify that incoming line voltage (power) and low-voltage (control) circuits are de-energized
and locked out before installing cables or making any connections in the junction box.

Typical junction box connections are shown in Figure 16 and described in 1.3 - Power and Control
Wiring.

Table 6 Main input junction box electrical connections (4 wire)

Junction Box Size

Inches (mm) Electrical Connections

27 x 14 x 6

(686 x 356 x 152)

35 x 22 x 6

(889 x 559 x 152)

400A 3 pole power block with 1/2 -13 studs on 1-3/4" (44mm) centers
750A ground busbar with two sets of 3/8 - 16 studs on 1.75” centers

750A phase busbars with 1/2 -13 studs on 1-3/4" (44mm) centers
750A ground busbar with two sets of 3/8 -16 studs on 1-3/4" (44mm) centers

Installation Instructions

Table 7 Main input junction box without transformer electrical connections (5 wire)

Junction Box Size

Inches (mm) Electrical Connections

27 x 14 x 6

(686 x 356 x 152)

35 x 22 x 6

(889 x 559 x 152)

400A 3 pole power block with 1/2 -13 studs on 1-3/4" (44mm) centers
750A neutral busbar with two sets of 1/2 -13 studs on 1-3/4" (44mm) centers
750A ground busbar with two sets of 3/8–16 studs on 1-3/4" (44mm) centers

750A phase busbars with 1/2 -13 studs on 1.75” centers
1500A neutral busbar with two sets of 1/2 -13 studs on 1-3/4" (44mm) centers
750A ground busbar with two sets of 3/8 - 16 studs on 1-3/4" (44mm) centers

Dimensions are given on the drawings furnished with the unit. Typical dimensions of the junction
boxes are as follows:

Table 8 Low-voltage (control) junction box dimensions, typical

Width, inches (mm)

Length, inches (mm)

Height, inches (mm)

8 (203)

10 (254)

4 (102)

Table 9 Main input (power) junction box dimensions, typical

Input Voltage

Unit kVa

15-100 kVA, L x W x H, inches (mm) 27 x 14 x 6 (686 x 356 x (152)

125-150 kVA, L x W x H, inches (mm)

200 kVA, L x W x H, inches (mm)

225 kVA, L x W x H, inches (mm)

300 kVA, L x W x H, inches (mm)

208-240V 380-415V 480-600V

35 x 22 x 6

(889 x 559 x 152)

N/A

N/A

N/A

27 x 14 x 6 (686 x 356 x (152)

27 x 14 x 6 (686 x 356 x (152)

35 x 22 x 6

(889 x 559 x 152)

35 x 22 x 6 (889 x 559 x 152)

(686 x 356 x (152)

27 x 14 x 6

14

Figure 10 Low voltage control junction box connections, typical

1 2 3 4 5 6 10 11 127 8 9 13 14 15 16 17 18 19 20 21

Build ing
Interface

Relay

Factory-supplied
low-voltage control cable

Installation Instructions

Figure 11 Main input junction box connections, typical

A

B

C

Customer input
power connection

3-phase, 3-wir e + GND
for units with transformer
3-phase, 4-wir e + GND
for units without tr ansform er

N

G

1.3.3 System Grounding

The performance and safety of any power conditioning system depend on proper grounding.
Figure 12 shows the typical grounding arrangements for the Liebert FPC.

Equipment Grounding

Equipment grounding is primarily for safety. Correct implementation of grounding also enhances
equipment performance. All power feeders must include equipment grounding means as required by
the NEC and local codes.

An insulated ground conductor is recommended to be run in each feeder conduit. Ground conductors
must be at least the minimum size per NEC Table 250-66. Larger wire sizes may be used for
increased system performance.

Factory-supplie d
input power c able
assemby

NOTE : Parallel cables
are used on units with
higher -ampacity

Neutral bus bar a nd wire
furnished on units
without transformer

If the input power feeder conduit is used as a grounding conductor, adequate electrical continuity
must be maintained at all conduit connections.

CAUTION

!

Using isolating bushings in a metal conduit run can be a safety hazard and is not
recommended.

15

Signal Reference Grid

If the unit is used to supply power to a computer room or area that is equipped with a signal reference
grid or a grounded raised-floor stringer system, a grounding conductor should be connected from the
system ground bus to the grid or floor system. This conductor should be stranded or braided #8 AWG
or larger, and as short as practical. Less than 3 ft. (1m) is recommended.

1.3.4 Grounding Electrode Conductor for FPCs With Transformer

Required by code - The Liebert FPC with transformer must be grounded according to the safety
practices of NEC 250-26. A local grounding electrode conductor is recommended in addition to the
equipment safety ground which is normally run with the input power conductors. (See Figures 5
through 8.)

As shown in Figure 12, the grounding electrode conductor is run from the unit to the nearest effec­tively grounded location (listed in order of preference):

• Building steel

• Metal water pipe

• Other made grounding electrode

The grounding electrode conductor’s size is based on the secondary circuit conductors. Table 10
shows the minimum recommended grounding electrode conductor according to the NEC
(Table 250-66).

Table 10 Minimum grounding electrode conductor size (AWG)

Output Voltage

kVA

100 0 4 4

125 0 2 2

150 00 2 2

200 00 0 0

225 00 0 0

300 00 0 0

AWG wire size based on 75°C copper conductors

208V 380V 415V

15 8 8 8

30 8 8 8

50 4 8 8

75 2 6 6

Installation Instructions

Recommended methods for running the grounding electrode conductor (arranged by preference for
system performance; as acceptable by local and other applicable codes):

• Outside of conduit (where not subject to damage)

• Inside non-metallic conduit

• Inside non-ferrous conduit

• Inside ferrous conduit, bonded to the ferrous conduit at both ends, as acceptable by local and other
applicable codes

16

Figure 12 Typical grounding arrangements

Installation Instructions

Service

Entrance

N

G G G

Service entrance

grounding electrode

system

Input

J-box

(if used )

Liebert FPC

(w ith transformer)

Local grounding

electrode

conduc tor per

NEC 250-28

Typical Liebert FPC

with transformer grounding arrangement

N

Signal reference grid

(if used)

Output

Service

Entrance

N

G

Servic e entrance

grounding electrode

system

Input

J-box

(if used)

N

G

Typical Liebert FPC

without transformer grounding

Liebert FPC

(without transformer )

Signal reference grid

N

G

(if used)

Output

17

1.3.5 Output Power Connections

Output circuit breaker(s) and/or panelboards with ground and neutral provisions are provided inside
the unit for connecting load(s) as required. (See Figures 5 through 8.)

Flexible output distribution cables for use in data processing areas under a raised floor are optional
and may be factory-supplied. Cable lengths and layout should be well-planned:

• Cable access—Cable routes should follow aisles between equipment. This will facilitate access to
cables for installation, routine inspection and alterations.

• Cable length—Measure the distance to the load equipment following right-angle paths, rather
than diagonally or directly. Always measure to the extreme far side of the equipment with respect
to the unit to ensure adequate cable length.

• Air circulation—Prevent restriction of airflow under the raised floor by running the flexible con­duits flat on the subfloor, in parallel paths.

For best performance, the Liebert FPC should be installed as close as practical to the load.

Initial system output loading should be between 50% and 75% of rated capacity. This allows the addi­tion of loads without immediately investing in another power conditioner. The high partial-load effi­ciency of the FPC permits such sizing without imposing an energy-use penalty during initial
operation.

Balancing of loads is good design practice on any 3-phase system. Accordingly, each distribution panel
is load-balanced at the factory, based on output branch circuit breaker sizes. All additions to the sys­tem should be arranged so as to preserve this balance.

Installation Instructions

For phase-shifted, multi-output units, to ensure proper harmonic current cancellation, the loads
should be balanced across the multiple outputs as well. For example, with a dual-output unit, the
loads should be balanced across the six output phases. For a quadruple output unit, the loads should
be balanced across the 12 output phases.

WARNING

!

Verify that all incoming line voltage (power) and low-voltage (control) circuits are
de-energized and locked out before installing cables or output breakers or making
connections, whether in the junction box or in the unit.

Verify that incoming line voltage circuits are de-energized and locked out before installing
output breakers and cables.

Code Compliance—All output cables and connections must comply with the NEC and all other
applicable codes.

Padlock-Off Provisions—All output cables without receptacles that are hard-wired to the load
equipment must be equipped with a padlock-off accessory for the output circuit breaker. The
padlock-off accessory is to be used to lock-out and tag the circuit breaker when service is performed on
the hard-wired load equipment in accordance with OSHA safety rules.

18

Figure 13 Typical Liebert FPC equipment arrangement

Installation Instructions

Liebert FPC

Ground electrode conductor
(not by Liebert) required per
NEC for units with transformer

Remote Emergency
Power Off Switch (REPO)

Main input power to unit
(not by Liebert)
 3-phase, 3-wire plus ground

for units with transformer

 3-phase, 4-wire plus ground

for units without transformer

*Transient suppression plate

Main input junction box and cable

Low voltage junction
box and cable

* Flexible distribution cables
per customer specifications

* Optional devices : Refer to the
specification sheet for options
supplied

Building i nterface and
alarm connections
(not by Liebert)

19

1.3.6 Control Wiring Connections

NEC Article 645 requires that emergency power off (EPO) switches be located at the principal room
exits. All standard Liebert power conditioning systems have provisions for external shutdown control
from Remote Emergency Power Off (REPO) stations. Figure 14 is a simplified diagram of the shut­down circuitry of the Liebert FPC.

Low-Voltage Control Circuit

Control wiring connections must comply with the NEC and all other applicable codes.

WARNING

!

Verify that all incoming high-voltage (power) and low-voltage (control) circuits are
de-energized and locked out before installing cables or making connections, whether in the
junction box or in the unit.

As shown in Figure 14, the control circuit operates on 24VDC. The shutdown device (represented by
the REPO switch) activates a low-current, 24VDC relay that in turn operates the shunt-trip mecha­nism. The shunt-trip solenoid opens the Main Input Breaker, which de-energizes the power center.

Multiple-Unit Shutdown

When more than one power center is installed by the user, a typical requirement is that actuation of a
single device (REPO for example) must shut down all power centers. The low-voltage control circuits
of all standard Liebert FPC systems are designed to meet this requirement.

Installation Instructions

External Control Wiring Connections

External control wiring connections for remote shutdown, alarm, and/or monitoring are made to the
low-voltage junction box (if used) or to the low-voltage control terminal strip located inside the unit.

Control wiring connections vary with the type of monitoring system furnished with the unit. Two typ­ical control wiring configurations are shown in Figures 15 and 16.

Figure 14 Simplified shutdown circuit

Liebert FPC

K5

K6

+

24VDC

Source

Main
Input
Breaker

-

Shunt
Trip

+24VDC

Unit EPO

K6 6

Overtemp

Switch

K5

Remote

Shutdown

Devices

1

4

N.O. REPO

N.C. REPO

2

20

7 4

3

R1

B

9 6

1A

Building

Interface

Relay

3

Figure 15 Typical control wiring for units without monitoring

Installation Instructions

Low Voltage
Terminal Strip

Overtemp Alarm N.O. W208

Overtemp Alarm N.C. W207

N.C. REPO W202

Factory-Supplied Wiring

Building
Interface
Relay

Alarm Com. W206

N.O. REPO W205

24VDC W204

REPO Com. W203

24VDC W201

A

R

B

21
20
19
18
17
16
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

7

96

4

1

3

BLK
WHT
GRN

Remove jumper
when Normally
Closed (N.C.)
REPO is used

Overtemp

S

Alarm Output

N.O. REPO

N.C. REPO

NOTES

1. All switching devices are to be suitable for switching low current 24VDC. Minimum
recommended wire size is 18AWG stranded copper with 300V insulation.

All wiring and devices are field supplied except where noted. See installation manual for
detailed installation procedures.

2. Low voltages terminal strip may be located in unit or low voltage control junction box.

3. The total load on the 24VDC supply (both N.O. and N.C. REPO circuits) must be limited to
1A.

4. Multiple normally open (N.O.) REPO switches may be paralleled.
Multiple normally closed (N.C.) REPO switches may be connected in series. all lamps (if used)

are connected in parallel.

5. The summary alarm contacts are rated for 0 to 30VAC or VDC, 0.5A, 10W maximum.

21

Figure 16 Typical control wiring for units with monitoring

Low Voltage
Terminal Strip

21

Comm Cable+(RED)

Comm Cable-(BLK)

RS-232 RXD (WHT)

RS-232 TXD (RED)

RS-232 COM (BLK)

5th Customer Alarm W214
4th Customer Alarm W213

3nd Customer Alarm W212

2nd Customer Alarm W211

1st Customer Alarm W210

Summary Alarm N.O. W208

Summary Alarm N.O. W208

Summary Alarm N.C. W207

Summary Alarm Com. W206

Factory-Supplied Wiring

N.O. REPO W205

REPO Com. W203

N.C. REPO W202

24VDC W204

24VDC W201

20
19
18
17
16
15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

To
SiteScan
System

Remove jumper
when fifth customer
alarm is used

Optional
customer
alarm
inputs

Summary

S

Alarm Output

BLK
WHT
GRN

N.O. REPO

N.C. REPO

Installation Instructions

NOTES

Remove jumper

when Normally

Closed (N.C.)

REPO is used

Building
Interface
Relay

A

7

R

96

B

4

1

3

1. All switching devices are to be suitable for switching low current 24VDC. Minimum
recommended wire size is 18AWG stranded copper with 300V insulation.

All wiring and devices are field-supplied except where noted.
See installation manual for detailed installation procedures.

2. Low voltages terminal strip may be located in unit or low voltage control junction box.

3. The total load on the 24VDC supply (both N.O. and N.C. REPO circuits) must be limited to 1A.

4. Multiple normally open (N.O.) REPO switches may be paralleled.
Multiple normally closed (N.C.) REPO switches may be connected in series. All lamps (if used)

are connected in parallel.

5. The summary alarm contacts are rated for 0 to 30VAC or VDC, 0.5A, 10W maximum.

6. Customer alarms 1 through 4 are normally open (indicates alarm on contact closure). Customer
alarm 5 is normally closed (indicates alarm on contact opening).

7. RS-232 communication port is connected to the low voltage terminal strip inside unit only.
Connect using suitable 300V communication cable.

22

2.0 EQUIPMENT INSPECTION AND STARTUP

2.1 Internal Inspection

A detailed internal inspection should be performed after the unit is in place and before it is ener­gized, to ensure trouble free startup. The same internal inspection should be carried out when per­forming preventive maintenance.

WARNING

!

Verify that all incoming line voltage (power) and low-voltage (control) circuits are
de-energized and locked out before performing the internal inspection.

Open the unit - Gain access to the internal components of the Liebert FPC unit by removing the
exterior panels and internal accent panels.

Visually inspect - Be sure wiring and components are not damaged.

Check power connections - Check all power connections for tightness. Refer to Tables 11
through 14 for torque requirements of all electrical connections.

Perform formal detailed inspection - Follow the procedures described in 3.0 - Inspection and
Start-Up Checklist when performing detailed inspection.

2.2 Startup

Equipment Inspection and Startup

Checklists

Follow the detailed step-by-step checklist (3.0 - Inspection and Startup Checklist) when installing
and starting up the Liebert FPC.

Initial System Startup

A qualified electrician must be employed to perform the equipment inspection and startup. Liebert
system startup may be arranged by calling your local Liebert sales representative or Liebert Global
Services. In the United States, call 1-800-LIEBERT.

Warranty

A copy of the appropriate checklist (furnished with the equipment) must be completed, signed, dated
and returned to Liebert Corporation. Warranty coverage of the equipment is not effective unless the
checklist has been received by the factory.

WARNING

!

Equipment inspection and startup should be performed only by trained personnel. Hazardous
voltages are present during startup procedures.

Electrical safety precautions must be followed throughout inspection and startup.

23

Table 11 Torque specifications, general

Electrical connections

with 1 Belleville washer

Torque Torque

lb-in N-m lb-in N-m

Bolt shaft size, in./mm

1/4 / M6 40 4.5 80 9.0

5/16 / M8 80 9.0 180 18.0

3/8 / M10 120 13.6 240 27.1

1/2 / M12 480 54.3 — —

Input and output breakers

Up to 150 amp 80 9.0 160 18.0

175 - 500A 120 13.6 240 27.1

Electrical connections

with 2 Belleville washers

Table 12 Panelboard main circuit breaker torque specifications

Torque

lb-in N-m

Busbar-to-breaker 240 27.1

Equipment Inspection and Startup

Table 13 Branch circuit breaker torque specifications

Breaker size lb-in N-m

Up to 30 amp 20 4.0

40 to 100 amp 20 5.1

Table 14 Terminal block compression lug torque specifications

AWG wire size

or range

#14 - #10 35 4.0

#8 40 4.5

Torque

lb-in N-m

24

3.0 INSPECTION AND STARTUP CHECKLIST

Unit Serial Number

Unit Model Number

Date

3.1 Inspection

WARNING

!

All equipment inspection procedures are to be performed with power to the unit turned off
and locked out.

___ 1. Confirm that the exterior of unit is undamaged (including cables and receptacles, if

furnished).

___ 2. Confirm that service and ventilation clearances are adequate. (See Figures 1 through 3.)

___ 3. Remove accessible exterior and internal panels.

___ 4. Inspect all wire and conductor insulation for damage.

___ 5. Check all transformer terminal connections for tightness. Retorque if necessary.

___ 6. Check all breaker connections for tightness. Retorque if necessary.

___ 7. Check all terminal block connections for tightness. Retorque if necessary.

___ 8. Check transformer mounting bolts for tightness. Retorque if necessary.

___ 9. Remove any foreign objects from the components or the interior area of the unit.

Make sure air passages on transformers are clear and free of debris.

___ 10. Check that the intake and exhaust air screens are clean and free of obstructions.

___ 11. Replace internal and exterior side panels, leaving access to circuit breakers for the following

start-up procedure.

Inspection and Startup Checklist

25

3.2 Startup

!

1. Make certain that all circuit breakers are in the OFF position and that power to the unit is locked
out.

___ 2. Remove the cover of the Main Input Junction Box. Verify proper input power connections to

___ 3. Turn ON the building power to the junction box. Check the phase rotation at the junction box.

___ 4. Check and record the input voltages at the junction box:

___ 5. Turn OFF and lock out the building power to the input junction box.

___ 6. Replace the junction box cover.

___ 7. Verify proper input power connections to unit, including equipment grounding conductor and

___ 8. Turn ON the building input power to the unit.

___ 9. Check the phase rotation at the main input breaker. Phase rotation should be A, B, C, left-to-

___ 10. Check and record the input voltage at the main input breaker. Measured voltages should

___ 11. Turn ON the main input breaker; wait one minute. (If breaker trips OFF, check for wiring

___ 12. Check the phase rotation at the line side terminals (top) of the panelboard main breaker(s)

___ 13. Check and record the voltages at the line-side terminals of the output circuit breaker.

If output voltage is incorrect, check for wiring errors, incorrect input voltage, or improper trans­former tap. Contact Liebert Global Services at 1-800-LIEBERT in the United States or your local
Liebert representative for assistance.

Inspection and Startup Checklist

WARNING

Startup procedures should be performed only by qualified personnel. Hazardous voltages are
present in the equipment throughout the majority of the start-up procedure. Use proper
safety equipment. proceed with caution.

When opening the main input circuit breaker wait a minimum of one minute before reclosing.

NOTE

Steps 2 through 6 apply to the Main Input Junction Box. If this installation is not provided
with a Main Input Junction Box, proceed to Step 7.

unit, including equipment grounding conductor.

Phase rotation should be A, B, C, as indicated.

Volts, Phase A to Phase B = ______________
Volts, Phase B to Phase C = ______________
Volts, Phase C to Phase A = ______________

local grounding electrode conductor.

right.

correspond to the unit’s nameplate input voltage.
Volts, Phase A to Phase B = ______________
Volts, Phase B to Phase C = ______________
Volts, Phase C to Phase A = ______________

errors including control connections. Contact Liebert Global Services or the location factory
representative for assistance.)

and any subfeed output circuit breaker(s). The rotation should be A, B, C, left-to-right.

Measured voltages should correspond to the unit’s nameplate output voltage (within +4%,­0%).

Volts, Phase A to Phase B = _______________
Volts, Phase B to Phase C = _______________
Volts, Phase C to Phase A = _______________
Volts, Phase A to Neutral = _______________
Volts, Phase B to Neutral = _______________
Volts, Phase C to Neutral = _______________

26

NOTE

The Liebert FPC transformer has input voltage taps for each input phase. The taps are
arranged in 2-1/2% or 5% intervals ranging from -10% to nominal to +5%. This permits the
transformer to provide the proper output voltage for a range of input voltages. Should it be
necessary, the tap arrangement may be changed to match the input voltage:

• Open main input circuit breaker.

• Select tap arrangement to match input voltage. (Refer to transformer nameplate for tap
information.)

• Secure each line to its proper tap.

• Repeat Steps 11 to 13.

___ 14. Press the local EMERGENCY POWER OFF switch, if supplied, and verify system shutdown.

Turn the unit back on.

___ 15. Repeat Step 14 for each remote EMERGENCY POWER OFF switch with which the system is

equipped.

CAUTION

!

The Remote Emergency Power Off switch may shut down more equipment or systems than
just the Liebert FPC.

3.3 Monitoring System Check-Out

Inspection and Startup Checklist

Basic Indicators

___ 1. Turn ON the building power to the unit, then turn the main input breaker ON.

___ 2. Check that the local EMERGENCY POWER OFF button, if supplied, is illuminated and that

the ALARM PRESENT / SILENCE indicator is off.

Manual Restart Check

If the Liebert FPC is equipped with Manual Restart:

___ 1. Turn on building power to the FPC. Turn Main Input Breaker ON.

___ 2. Turn off all building power to FPC.

___ 3. Observe that Main Input Breaker automatically trips open upon power loss.

___ 4. Restore building power to the FPC and return Main Input Breaker to ON.

Power Monitor Panel

If the Liebert FPC is equipped with a Power Monitor Panel:

___ 1. Turn ON the FPC.

___ 2. Ensure that the voltage values indicated by the Monitor Panel correspond to the voltage

values measured at the input and output circuit breaker (Steps 10 and 13 in 3.2 - Startup).

Centralized Monitor

If the Liebert FPC is connected to a Centralized Monitoring System:

___ 1. Turn ON the FPC and the Centralized Monitoring System.

___ 2. Verify proper communication to the monitor system operation.

Control Voltage

___ 1. Obtain access to the low voltage terminals in the Low-Voltage Junction Box (if used), or in the

low-voltage control section inside unit.

___ 2. With the FPC ON, measure and record the DC control voltage on terminals 1 (+) and 3 (com).

___ 3. Control Voltage = ____________________ (Voltage should be between 16 and 23VDC).

27

Inspection and Startup Checklist

Customer Alarms

If customer alarms are provided:

___ 1. With the FPC ON, simulate alarm operation by jumpering the appropriate low-voltage control

terminals. (Refer to the control wiring installation drawing furnished with the unit.)

___ 2. Verify correct alarm annunciation by the Power Monitor Panel and/or by the Centralized

Monitoring System.

3.4 Equipment Connection Check-Out of Units With Distribution Cables

CAUTION

!

All loads should be disconnected or turned off before proceeding with the following steps.
For units with output distribution cables, be sure that NO output receptacles are connected to

load equipment plugs and that the receptacles are not in contact with foreign objects.
Pay special attention to those output cables intended for direct wiring connection; the exposed

conductor ends of these cables must not be in contact with each other or with any foreign
objects.

___ 1. Turn on main input power to the unit, then turn on the panelboard main output breaker(s).

___ 2. Individually turn on each branch circuit breaker and check the output voltage (also phase

rotation, if a 3-phase circuit) at the receptacle or cable end.

___ 3. Turn OFF all branch circuit breakers and the panelboard main output circuit breaker(s).

___ 4. Connect the load equipment per equipment manufacturer’s specifications and

recommendations.

___ 5. Turn on the panelboard main output breaker(s).

___ 6. Turn on branch circuit breakers to the load equipment.

CAUTION

!

Observe the power-up sequence recommended by the equipment manufacturer.

___ 7. Verify that all load equipment operates properly.

___ 8. Replace all unit panels. After performing the inspection and start-up procedure described in

3.0 - Inspection and Startup Checklist in this manual, complete the Start-Up and

Inspection form furnished with the unit, sign the completed form and return it to:

Liebert Corporation
1050 Dearborn Drive
P.O. Box 29186
Columbus, Ohio 43229 USA

NOTE

Warranty is not in effect until the inspection and startup form is received by the
factory.

28

4.0 OPERATING INSTRUCTIONS

4.1 Startup Procedures

Before the unit is placed into service after initial installation, after equipment relocation, or after
equipment has been de-energized for an extended period of time, perform equipment inspection and
start-up procedures as detailed in 2.0 - Equipment Inspection and Startup and 3.0 - Inspection
and Startup Checklist.

After initial system startup, the following guidelines can be used for standard equipment operation.
These guidelines should be reviewed for any special equipment modifications, special site consider­ations or company policies that may require changes to the standard equipment operation.

4.1.1 Emergency Shutdown—If Emergency Power Off switch is supplied

To perform an immediate system shutdown during emergency conditions, lift the clear protective
cover and push the Emergency Power Off (EPO) switch on the FPC’s monitoring panel.

NOTE

Depending on the particular control circuit wiring, operation of the unit EPO switch may cause
other equipment to also shutdown.

If the site is equipped with a Remote Emergency Power Off (REPO) switch to perform an immediate
room shutdown, actuate one of the REPO switches. NEC Article 645 requires a REPO switch at the
principal exit doors.

Operating Instructions

4.1.2 Normal System Shutdown

To perform a normal system shutdown, perform an orderly load equipment shutdown according to the
load equipment manufacturer’s recommended shutdown sequence. The load equipment can be turned
OFF at each piece of load equipment or at the FPC’s output distribution (circuit breaker) panels
located behind the FPC’s front door. Turn OFF all unit output breakers, then turn OFF the unit’s
main input circuit breaker. To remove all power from the FPC, turn OFF the building power to the
FPC’s input breaker or junction box.

4.1.3 Normal System Turn ON

Make certain all of the FPC’s circuit breakers are in the OFF position. All unit circuit breakers are
located behind the front doors. Turn ON building power to the FPC. Turn ON the FPC’s main input
circuit breaker. If the circuit breaker has been tripped OFF (instead of being turned OFF), the circuit
breaker handle must be moved to the OFF position before being turned ON. If the FPC has a voltage
monitoring panel, verify proper output voltages before turning ON output circuit breakers. Turn ON
the panelboard main breakers. Individually turn ON each output circuit breaker following the load
equipment manufacturer’s startup sequence.

4.1.4 Manual Restart

If the FPC’s manual restart feature has been selected, the unit’s main input circuit breaker will be
tripped upon a power failure, preventing repetitive application of unstable voltage and allowing for an
orderly system restart. If the main input circuit breaker is tripped upon a power failure, wait until
power is restored, then follow the instructions in 4.1.3 - Normal System Turn ON.

29

4.2 Basic Monitor Panel (Units Without Monitoring)

Alarm Present/Silence

Upon occurrence of a transformer overtemperature condition, the “Alarm Present/Silence” switch will
become illuminated and the audible alarm will be activated. Pushing the “Alarm Present/Silence”
switch will silence the audible alarm. The cause of the overtemperature condition should be investi­gated and corrected. Possible causes include transformer overload, excessive non-linear loading, inade­quate ventilation, high or low input voltage, or monitoring malfunction. Failure to correct the
overtemperature condition may result in an automatic system shutdown due to the second stage of
overtemperature sensing. After correction of the alarm condition, the alarm will automatically reset.

Figure 17 Basic monitoring panel

Operating Instructions

EMERGENCY
POWER
OFF

ALARM
PRESENT
SILENCE

4.3 Power Monitor Panel

Monitored Parameters - A 4 x 20 character LCD is provided to indicate the input voltages (line-to­line), output voltages (line-to-line and line-to-neutral), output currents (each phase, neutral and
ground), output voltage THD, output current THD, crest factor, K-factor, output kVA, kW, kWH,
power factor, percent load and output frequency. Pressing the Scan switch will activate the
“Autoscan” mode where all monitored parameters are sequentially displayed automatically. Momen­tarily pressing the “Hold/Sequence” switch interrupts the “Autoscan” mode. Pressing the “Hold/
Sequence” switch allows manual selection of the sequentially displayed parameters.

Figure 18 Power monitor panel

OUTPUT VOLTAGE

X – Y = 208
Y – Z = 208
Z – X = 208

Liebert FPC

X – N = 120
Y – N = 120
Z – N = 120

SCAN

HOLD

SEQUENC E

FPC16000

EMERGENCY
POWER
OFF

ALARM
PRESENT
SILENCE

Liebert FPC

30

FPC16001

Operating Instructions

Alarms - Upon occurrence of any of the following alarms, the alarm message appears on the LCD dis­play, the Alarm Present/Silence switch is illuminated, and the audible alarm is activated. Pressing
the “Alarm Present/Silence” switch silences the audible alarm. After the alarm condition is corrected,
the alarm can be reset by pressing the “Alarm Present/Silence” switch when prompted by the LCD
display or by way of any Central Monitoring System.

• Output Overvoltage - Indicates one or more of the output phase voltages has exceeded the pre­set limit (normally +6% of nominal). The high output voltage should be verified and corrective
action taken. In the absence of other procedures, a normal (orderly) system shutdown should be
performed to prevent load equipment damage.

• Output Undervoltage - Indicates one or more of the output phase voltages has exceeded the
preset limit (normally -13% of nominal). The low output voltage should be verified and corrective
action taken. In the absence of other procedures, a normal (orderly) system shutdown should be
performed to prevent load equipment damage.

• Output Voltage THD - Indicates that the voltage distortion on one or more of the output phases
has exceeded the preset limit (normally 10% THD). The cause of the high output voltage distor­tion should be investigated and corrective action (if any) taken.

••Transformer Overtemp - Indicates a unit transformer overtemperature condition. The cause
of the overtemperature condition should be investigated and corrected. Possible causes include
unit overload, excessive non-linear loading, inadequate ventilation, high or low input voltage, or
monitoring malfunction. Failure to correct the overtemperature condition may result in an auto­matic system shutdown due to the second stage of overtemperature sensing.

• Output Overcurrent - Indicates one or more of the output phase currents has exceeded the pre­set limit (normally 95% of the unit’s full load amp rating). The overcurrent condition should be
verified and corrective action taken. In the absence of other procedures, some of the output loads
should be turned off to reduce unit loading. If unbalanced phase currents exist, some of the loads
should be shifted from the higher loaded phase(s) to the lower loaded phase(s).

• Neutral Overcurrent - Indicates that the neutral current has exceeded the preset limit (nor­mally 95% of the unit’s full load amp rating). The overcurrent condition should be verified and
investigated to see if corrective action is required. In some cases, high neutral current indicates
phase current unbalance which should be corrected. Where high neutral currents are the result of
harmonic load currents, all affected components (including output wiring) should be verified to be
suitable for the current.

• Frequency Deviation - Indicates that the output frequency has exceeded preset limits (nor­mally Ø0.5 Hz). The frequency deviation should be verified and the cause investigated and cor­rected.

• Phase Sequence Error - Indicates that the output phase sequence is not A, B, C. The phase
sequence should be verified and corrective action taken. Three-phase loads sensitive to phase
sequence should not be operated without proper phase sequence.

• Phase Loss - Indicates that one or more of the phase voltages is low or missing. The low voltage
condition should be verified and corrective action taken. In the absence of other procedures, a nor­mal (orderly) shutdown should be performed to prevent equipment damage.

• Ground Overcurrent - Indicates the system ground current has exceeded the preset limit (nor-
mally 5 amps). The overcurrent condition should be verified and corrective action taken. Possible
causes are wiring errors, ground faults, or excessive leakage current.

• Customer Alarms (5) - Indicates customer-designated alarms. The cause and corrective action
depend on the nature of the alarm. See 1.3.6 - Control Wiring Connections for contact closure
connection information.

31

Operating Instructions

To Set Unit Clock - To set the clock from the unit front panel, simultaneously press the Scan and
Hold membrane switches while the time and date screen is displayed on the LCD. A cursor should
appear on the selected time and date field. Use the Scan switch to increment the highlighted field and
the Hold switch to decrement the highlighted field. Use the Silence push button to select the next
time and date field. The time can be displayed in AM/PM or 24-hour format. Simultaneously press the
Scan and Hold switches to exit the clock set screen.

RS-232 ASCII Communications Port - Units with power monitoring are equipped with an isolated
RS-232 ASCII Communications Port, which allows access to unit monitored parameters and alarm
information. The RS-232 port connections are located on the low voltage control terminal strip inside
the unit. See typical control wiring in Figure 16.

The ASCII interface default parameters are shown in Table 15.

Table 15 ASCII interface default parameters

Parameter Default

Interface RS-232 using EIA voltage levels

Baud rate 9600

Parity None

Data bits 8

Stop bits 1

Terminator <CR>

Hand shaking Not supported

Structure Half-duplex

Echo OFF

Change to receive after transmit 1.28 msec

Minimum delay to transmit after receive 120 µsec

Maximum response time turn around 300 msec

Maximum response completion time 500 msec

Minimum delay between commands 500 msec

Maximum intercharacter delay 12.5 msec

The ASCII port uses a Query-Response Format.

Table 17 shows the list of available customer commands. Only one command is serviced at a time.
Valid commands are terminated with a carriage return [0Dh]. Commands are accepted in upper or
lower case. Responses are in upper case, terminated with a line feed [0Ah] and carriage return [0Dh].

Table 16 RS-232 ASCII port customer commands

Command Description Typical Response

Time? <CR>
Date? <CR>

UID? <CR>
kVA? <CR>
V? <CR>

SS1? <CR> System Information

SA? <CR> Number of Active Alarms

UPMD?
<CR>

Unit: Time
Unit: Date

Unit ID
Nominal kVA
Nominal L-L Voltage

(20-character fields
with comma separators)

(20-character alarms
with time stamp)

Monitored Parameters
(32 comma-separated
data fields—see
Table 17 for descriptions
of field positions)

03:40:37A<LF><CR>
05-15-97<LF><CR>

Unit_No._PDU_21B____<LF><CR>
0150<LF><CR>
0208<LF><CR>

UNIT_MODEL_NUMBER___SERIAL NUMBER_______
SITE_ID_NUMBER______TAG_NUMBER__________<LF><CR>

02, OUTPUT_OVERVOLTAGE__05-15-97,01:25:30A
OUTPUT_OVERCURRENT__05-15-97,01:27:46A<LF><CR>

0484,0485,0483,0210,0212,0211,0121,0122,0121,0068,
0085,0120,0131,0018,0030,0092,0033,0600,0038,0041,
0043,0549,0632,0599,0000,1528,0018,0019,0020,0045,
0047,0049,0044<LF><CR>

32

Table 17 Monitored parameters data definitions

Field # Data item Units

1 Input Voltage A-B Volts

2 Input Voltage B-C Volts

3 Input Voltage C-A Volts

4 Output Voltage X-Y Volts

5 Output Voltage Y-Z Volts

6 Output Voltage Z-A Volts

7 Output Voltage X-N Volts

8 Output Voltage Y-N Volts

9 Output Voltage Z-N Volts

10 Output Current X Amps

11 Output Current Y Amps

12 Output Current Z Amps

13 Neutral Current Amps

14 Ground Current 0.1 Amps

15 Output Power kW

16 Power Factor 0.01 Power Factor

17 Output Power kVA

18 Output Frequency 0.1 Hz

19 Output Vx THD 0.1%

20 Output Vy THD 0.1%

21 Output Vz THD 0.1%

22 Output Ix THD 0.1%

23 Output ly THD 0.1%

24 Output Iz THD 0.1%

25 Output kW-Hrs kW-Hrs

26 Output Ix Crest Factor 0.1

27 Output ly Crest Factor 0.1

28 Output Iz Crest Factor 0.1

29 Output Ix K-Factor 0.1

30 Output ly K-Factor 0.1

31 Output Iz K-Factor 0.1

32 Output Loading % of Full Load

Operating Instructions

33

5.0 MAINTENANCE

5.1 Repair

Even the most reliable equipment may fail. Liebert Global Services is at your service to assure fast
repair of your unit and minimum downtime of your installation.

WARNING

!

Only qualified service personnel should perform maintenance on the Liebert FPC system.

Standard electrical troubleshooting procedures should be used to isolate problems in the unit. If there
are questions, don’t hesitate to contact Liebert Global Services.

Repair or replacement of standard items, such as circuit breakers, fuses, transformers, capacitors and
indicator lights can either be handled by qualified electricians or referred to Liebert Global Services.

Repairs related to the monitoring system should be referred to Liebert Global Services. To contact
LGS for information or repair service in the United States, call 1-800-LIEBERT.

5.2 Inspection and Cleaning

Air circulation through the cabinet may cause dust to accumulate on internal components. Cleaning
should be done as necessary during electrical inspections.

Maintenance

Annual general system inspections, cleaning, and operation checks are recommended to ensure sys­tem performance and long service life.

WARNING

!

Only qualified service personnel should perform maintenance on the Liebert FPC system. All
voltage sources to the unit must be disconnected before inspecting or cleaning within the
cabinet.

5.2.1 Inspection Schedule

• It is difficult to establish a schedule for periodic cleanings because conditions vary from site to
site. Inspections after the first 24 hours, 30 days and 6 months of operation should help determine
a pattern for the inspection schedule.

• Electrical connections and component mountings should be inspected after the first 24 hours,
30 days, and 6 months of operation. Inspections should be conducted annually thereafter.

• Ventilation openings and grilles should be inspected and cleaned every 6 months to one year.

• A complete inspection and operational checkout should be performed annually. This is best done
by performing the inspection and start-up procedure as detailed in 3.0 - Inspection and Star-
tup Checklist.

• LGS offers a complete range of preventive maintenance services. These include thorough equip­ment performance checks and calibration of electronics. Contact Liebert Global Services in the
United States by calling 1-800-LIEBERT for details.

34

Ensuring The High Availability
0f Mission-Critical Data And Applications.

Emerson Network Power, the global leader in enabling business-critical
continuity, ensures network resiliency and adaptability through
a family of technologies—including Liebert power and cooling
technologies—that protect and support business-critical systems.
Liebert solutions employ an adaptive architecture that responds
to changes in criticality, density and capacity. Enterprises benefit
from greater IT system availability, operational flexibility and
reduced capital equipment and operating costs.

While every precaution has been taken to ensure the 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.
© 2007 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.

Technical Support / Service

Web Site

www.liebert.com

Monitoring

800-222-5877

[e-mail]

Outside the US: 614-841-6755

Single-Phase UPS

800-222-5877

[e-mail]

Outside the US: 614-841-6755

Three-Phase UPS

800-543-2378

[e-mail]

Environmental Systems

800-543-2778

Outside the United States

614-888-0246

Locations

United States

1050 Dearborn Drive

P.O. Box 29186

Columbus, OH 43229

Europe

Via Leonardo Da Vinci 8

Zona Industriale Tognana

35028 Piove Di Sacco (PD) Italy

[phone]

Fax: [phone]

Asia

7/F, Dah Sing Financial Centre

108 Gloucester Road, Wanchai

Hong Kong

852 2572220

Fax: [phone]

SL-20412_REV04_09-07

Emerson Network Power.
The global leader in enabling Business-Critical Continuity.

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Connectivity

DC Power

Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co.

©2007 Emerson Electric Co.

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