Emerson SL-22075 User Manual

Liebert SH Series Surge Protection

Installation, Operation and Maintenance Manual

Surge Protection
For Business-Critical Continuity

™

Surge Protective Devices

LIEBERT SURGE PROTECTIVE DEVICE

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

TABLE OF CONTENTS

UNPACKING AND INSTALLATION

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

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

Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

LOCATION CONSIDERATIONS

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Audible Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Service Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

ELECTRICAL CONNECTIONS

Voltage Ratings and Power Source Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Voltage Ratings and Power Source Configurations (Chart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Wire Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Over Current Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

NEC Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Voltage Protection Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Circuit Ampacity Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

System Grounding and Bonding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Parallel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Grounding Electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Neutral Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALLATION INSTRUCTIONS

Product Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Dimensional Information (Chart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Suggested Breaker and Wire Size (Chart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MONITORING FEATURES

External Status Indicators (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Audible Alarm (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Summary Alarm Contact (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Transient Counter (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Swell Counter (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

TROUBLESHOOTING/SERVICING/MAINTENANCE

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Corrective Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

WARRANTY INFORMATION

10-Year Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installation, Operation and Maintenance Manual 1 Liebert SPDs SL-22075 Rev 0, 9/2010

Surge Protective Devices

UNPACKING AND INSTALLATION

Unpacking and Preliminary Inspection

1. Inspect the shipping crate(s) for damage or signs of
mishandling before unpacking the unit.

2. Remove any securing bands and cardboard packing and
inspect the unit for any obvious shipping damages.

3. If any damage as a result of shipping is observed, immediately
file a claim with the shipping agency and forward a copy to
your local Liebert Sales Representative.

Handling Considerations

Larger units are bolted to a shipping pallet to facilitate handling
by forklift or pallet jack. Check the size and weight. Refer to
the cabinet data furnished with the unit.

Storage

The unit should be stored in a clean, dry environment.
Storage temperature range is -55ºC (-67ºF) to +85ºC
(+185ºF). Care should be taken to avoid condensation. All
packing and shipping materials should be left intact until
the unit is ready for final installation. If the unit has been
stored for an extended period of time, the unit should be
cleaned and carefully inspected before placing into service.

LOCATION CONSIDERATIONS

For optimum transient surge protection, coordinated surge
suppression should be applied at the service entrance and all
other electrical connections to the building (telephone, CATV,
etc.), at known surge generating loads within the building
(large motors, arc welders, switched capacitors, etc.), as well
as at sensitive electronic loads (such as computers, electronic
appliances, solid state motor drives, etc.). For interconnected
electronic loads (such as by way of data cabling), transient surge
suppression should also be applied to the interconnecting
wiring (data cables).

Environment — Unit is designed for operation indoors in
ambient temperatures of -40ºC (-40ºF) to +60ºC (+140ºF) with
a relative humidity of 0% to 95% (non-condensing).

The unit is provided in an industrial use enclosure, which is
dust-tight and drip-tight and should not be installed in areas
with excessive dust, corrosive vapors, flammable materials or
explosive atmospheres.

Audible Noise — The audible noise of the unit is less than
40 dB at 5 feet, which allows its placement within almost any
room if desired.

Service Clearances — Service clearance is needed for units with
hinged doors on the front that are capable of being opened.
Thirty-six inches (36 in/914 mm) minimum is recommended.

Mounting — Unit is intended to be wall mounted. Refer to
installation instructions for mounting dimensions and weight.

Warnings Defined —

Danger: Indicates an imminently

hazardous situation that, if not
avoided, will result in death or
serious injury. This signal word
is to be limited to the most
extreme situations.

Warning: Indicates a potentially
hazardous situation that, if not
avoided, could result in death or
serious injury.

Caution: Indicates a potentially
hazardous situation that, if not
avoided, may result in minor or
moderate injury. It may also be used
to alert against unsafe practices.

Installation, Operation and Maintenance Manual 2 Liebert SPDs SL-22075 Rev 0, 9/2010

ELECTRICAL CONNECTIONS

Surge Protective Devices

All electrical connections should be installed by a qualified
(licensed) electrician only. All wiring must comply with the
National Electrical Code (NEC) and applicable local codes.

VERIFY THAT ALL POWER CIRCUITS ARE

DE-ENERGIZED AND LOCKED OUT BEFORE MAKING

ELECTRICAL CONNECTIONS.

Voltage Ratings and Power Source Configurations —

Before making connections to the unit, verify that the unit
model number and nameplate voltage rating are appropriate
for connection to the intended power source. See the chart
on page 4 for voltage rating applications with typical power
source configurations.

Wire Connections — With parallel connection, the size of the
wiring to the SPD unit is independent of the protected circuit’s
ampacity. NEC Article 285-21(B) requires surge suppressor
connecting conductors to be at least #14 copper or #12
aluminum. To reduce the wiring impedance to surge currents,
it is recommended that the phase, neutral (if required),
and ground conductors are twisted together and routed in
the same raceway (conduit). Avoid any sharp bends in the
conductors.

Overcurrent Protection — The SPD unit conducts practically
no current under normal operation and only conducts very
short duration transient surge currents.

NEC Considerations — The following is from the National
Electric Code 2008 Edition.

NEC 285.21 Connections

NEC 285.23 Type 1 SPDs. Shall be installed in accordance with

285.35(A) and (B).

(A) Installation. Type 1 SPDs shall be installed as follows:

(1) Type 1 SPDs shall be permitted to be connected to
the supply side of the service disconnect as permitted in

230.82(4) or

(2) Type 1 SPDs shall be permitted to be connected in
Type 2 locations as specified in 285.24.

(B) At the service. When installed at the services, the
grounding conductor of a Type 1 SPD shall be connected to
one of the following:

(1) Grounded service conductor

(2) Grounded electrode conductor

(3) Grounding electrode for service

(4)Equipment grounding terminal in the service equipment

Voltage Protection Ratings — To obtain the voltage
protection ratings (VPRs), as obtained by Underwriters
Laboratory, Incorporated, in accordance with the Standard

for Safety, Surge Protective Devices (SPDs), Standard 1449, Third
Edition, released (2009), marked on this product, the wire size

listed for each product must be utilized to connect the unit to
your facilities’ power grid. Connections made with conductors
other than the wire size listed may result in different VPRs.

Circuit Ampacity Limitations — Representative samples
of these products have been investigated by Underwriters
Laboratories, Incorporated to withstand, without exposing
live circuits or components at system voltages and fault
currents up to 200,000 AIC, as described in the Standard for

Safety, Surge Protective Devices (SPDs), Standard 1449, Third
Edition, released (2009).

System Grounding and Bonding — The performance and
safety of any SPD system is dependent on proper grounding
and bonding. Grounding is required for safety. Correct
implementation also enhances equipment performance.
Incorrect grounding can reduce or impede the SPD’s
operation.

All electrical circuits to the SPD must include an equipment-

grounding conductor as
required by the NEC and local
codes.

UNGROUNDED POWER SYSTEMS ARE INHERENTLY
UNSTABLE AND CAN PRODUCE EXCESSIVELY HIGH LINE-TO­GROUND VOLTAGES DURING CERTAIN FAULT CONDITIONS.
DURING THESE FAULT CONDITIONS ANY ELECTRICAL
EQUIPMENT, INCLUDING AN SPD, MAY BE SUBJECTED TO
VOLTAGES WHICH EXCEED THEIR DESIGNED RATINGS. THIS
INFORMATION IS BEING PROVIDED TO THE USER SO THAT
AN INFORMED DECISION CAN BE MADE BEFORE INSTALLING
ANY ELECTRICAL EQUIPMENT ON AN UNGROUNDED
POWER SYSTEM. CONTACT FACTORY FOR UNGROUNDED
APPLICATIONS.

An insulated grounding conductor is required in addition to any
metallic raceway, which may be used as a grounding conductor.
For parallel-connected SPDs, the grounding conductor should
be the same wire size as the associated power conductors.

(continued on page 5)

Installation, Operation and Maintenance Manual 3 Liebert SPDs SL-22075 Rev 0, 9/2010

Source Configurations

L

N

G

L

N

G

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

A

B

C

GG

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

A

B

C

GG

B

A

G

N

C

A

N

B
C

G

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

A

B

C

GG

B

A

G

N

C

A

N

B
C
G

A

B
C
G

Single Phase L-N, 2 W + G

VOLTAGE RATINGS AND POWER SOURCE CONFIGURATIONS

Nominal Operating Voltage

L-N L-G L-L

120 120 N/A

Maximum Continuous

Operating Voltage

150 L-N

Model Voltage Code

(Found in part number)

120 N

Single Phase L-L, 2 W + G

Single Phase, 3 W + G

Three Phase Delta, 3 W + G

Three Phase Wye, 4 W + G

Three Phase Wye, 3 W + G No Neutral

Installation, Operation and Maintenance Manual 4 Liebert SPDs SL-22075 Rev 0, 9/2010

230 230 N/A

277 277 N/A

320 L-N

320 L-N

230 N

277 N

N/A 208 208

N/A 240 240

N/A 400 400

N/A 480 480

120 120 208, 240

240, 277 240, 277 480

N/A 208 208

N/A 240 240

N/A 380-415 380-415

N/A 480 480

120 120 208

220-240 220-240 380-415

277 277 480

N/A 120 208

N/A 220-240 380-415

N/A 277 480

300 L-L

320 L-L

580 L-L

580 L-L

150 L-N

320 L-N

300 L-L 208D

320 L-L

580 L-L

580 L-L

150 L-N

320 L-N

320 L-N

150 L-G

320 L-G

320 L-G

208L

240L

400L

480L

120S

240S

240D

400D

480D

120Y

230Y

277Y

120X

230X

277X

Note 1: For other voltages or source configurations, consult factory.

E

F

(4X)

B

A

D

C

Service Panel for

Loads to be Protected

Phase L1/A

Phase L2/B
Phase L3/C

Disconnect/Main
Breaker for
Panel

Neutral Buss

Ground Buss

Dedicated

Disconnect

(Optional)

Recommended Wire

Entrance

Summary Alarm Contacts (X2)

Pin 1 = Normally Open

Pin 2 = Common

Pin 3 = Normally Closed

TB1 TB2

1 2 3 1 2 3

Liebert SH Series (Without Disconnect)

Model

#

Dimensions (Inches)

Weight

(lbs)

A B C D E F

SH025
SH032
SH040
SH075

16
16
16
20

8
8
8
8

17.25

17.25

17.25

21.25

9.5
10
10
14

0.44

0.44

0.44

0.44

35
49
49
85

16
16
16
20

Liebert SH Series (With Disconnect)

Model

#

Dimensions (Inches)

Weight

(lbs)

A B C D E F

SH025
SH032
SH040
SH075

16
16
16
24

8
8
8
8

21.25

21.25

21.25

21.25

10
10
10
18

0.44

0.44

0.44

0.44

45
58
58
95

20
20
20
20

To

Protected

Loads

Liebert

Surge

Protective

Device

Protected

Panel

Wire should be
less than 5 feet

and straight

as possible

Neutral

Phase(s)

Transient

Ground

Safety

Ground

Neutral

Phases

Ground

To

Protected

Loads

Liebert

Surge

Protective

Device

Protected

Panel

Wire should be
less than 5 feet

and straight

as possible

Neutral

Phase(s)

Transient

Ground

Safety

Ground

Neutral

Phases

Ground

To

Protected

Loads

Liebert

Surge

Protective

Device

Protected

Panel

Wire should be
less than 5 feet

and straight

as possible

Neutral

Phase(s)

Transient

Ground

Safety

Ground

Neutral

Phases

Ground

Rotary

Disconnect

PARALLEL CONNECTIONS

Surge Protective Devices

Typical Parallel Connections

(without Internal Rotary Disconnect)

Grounding conductors must be routed with the associated
power conductors in the same raceway (conduit). When
metallic raceways are used, adequate electrical continuity
must be maintained at all raceway connections, particularly
raceway terminations to the electrical enclosures.

The use of isolating bushings or other means to interrupt
a metallic conduit run is a potential safety hazard and is not
recommended.

Grounding Electrode — Surge protective devices do not
discharge all surges to ground (earth). Surge protective
devices can also divert the surge current back to its source to
complete the electrical circuit.

In the case of lightning whose potential is developed with
respect to the earth, the SPD diverts the surge current to
the grounding electrode (earth connection). However, for
most transient surges that are developed by switching loads,
the SPD diverts the surge current back to its source without
involving the grounding electrode.

Installation, Operation and Maintenance Manual 5 Liebert SPDs SL-22075 Rev 0, 9/2010

ELECTRICAL CONNECTIONS

Typical Parallel Connections

(with Internal Rotary Disconnect)

(continued from page 3)

For proper SPD performance, the service entrance grounding
electrode system must comply with the NEC by having all
available electrodes (building steel, metal water pipe, driven
rods, concrete encased electrodes, etc.) properly bonded
together and connected to the power system grounding.

The use of a separate grounding electrode to ground the SPD
defeats the effectiveness of the SPD, is a potential safety hazard,
may cause equipment damage, is an NEC violation (reference
NEC 250-51 and 250-54), and is not recommended.

Neutral Connection –

FOR PROPER AND SAFE
OPERATION, THE SPD’s

NEUTRAL, MUST BE RELIABLY
CONNECTED TO THE NEUTRAL OF THE SOURCE. FAILURE TO
PROVIDE A RELIABLE NEUTRAL CONNECTION MAY RESULT IN
FAILURE!

E

F

(4X)

B

A

D

C

Service Panel for

Loads to be Protected

Phase L1/A

Phase L2/B
Phase L3/C

Disconnect/Main
Breaker for
Panel

Neutral Buss

Ground Buss

Dedicated

Disconnect

(Optional)

Recommended Wire

Entrance

Summary Alarm Contacts (X2)

Pin 1 = Normally Open

Pin 2 = Common

Pin 3 = Normally Closed

TB1 TB2

1 2 3 1 2 3

Liebert SH Series (Without Disconnect)

Model

#

Dimensions (Inches)

Weight

(lbs)

A B C D E F

SH025
SH032
SH040
SH075

16
16
16
20

8
8
8
8

17.25

17.25

17.25

21.25

9.5
10
10
14

0.44

0.44

0.44

0.44

35
49
49
85

16
16
16
20

Liebert SH Series (With Disconnect)

Model

#

Dimensions (Inches)

Weight

(lbs)

A B C D E F

SH025
SH032
SH040
SH075

16
16
16
24

8
8
8
8

21.25

21.25

21.25

21.25

10
10
10
18

0.44

0.44

0.44

0.44

45
58
58
95

20
20
20
20

INSTALLATION INSTRUCTIONS

The Liebert SH Series Hybrid Surge Protective Devices (SPDs)
are high quality, high energy surge current diversion systems
designed to protect sensitive equipment from damaging
transient voltage surges. Proper installation is required for
maximum system performance.

The installer should perform the following steps to assure a
quality installation. The entire installation manual should be
read before starting installation. These instructions do not
replace national or local electrical codes. Check applicable
electrical codes to ensure compliance. Installation of the Liebert
SPD system should only be performed by qualified personnel.

1. Insure that all power is removed before beginning
installation. A qualified licensed electrician shall install all
electrical connections.

Dimensional Information

Liebert SH Series

Surge Protective Devices

2. The SPD is provided in NEMA 4 enclosures which are suitable
for use in indoor or outdoor installations.

3. Determine where the SPD is to be mounted, allowing for
minimum length of wire between itself and the input power
terminals of the service panel. Punch or cut the proper hole
size in the side of the SPD closest to the knockout to be
utilized in the service panel. Drill mounting holes in wall at
location picked for SPD next to service panel using mounting
dimensions shown in the table below. Mount surge suppressor
to wall using 3/8” mounting hardware.

(continued on page 7)

Installation, Operation and Maintenance Manual 6 Liebert SPDs SL-22075 Rev 0, 9/2010

Surge Protective Devices

L

N

G

L

N

G

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

A

B

C

GG

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

A

B

C

GG

B

A

G

N

C

A

N

B
C

G

L

N

G

L

N

G

L1

L2

G

L1

L2

G

L1

N

G

L2

L1

N

G

L2

A

B

C

GG

B

A

G

N

C

A

N

B
C
G

A

B
C
G

Model #

Allowable Range

Factory Suggested Size

Circuit Breaker Size

Connection Wire Size

Circuit Breaker

Size

Connection

Wire Size

With Disconnect Without Disconnect With Disconnect Without Disconnect

SH025
SH032
SH040
SH075

15A – 150A
15A – 175 A
15A – 175A
15A – 175A

15A – 175A

#8 – 1/O AWG
#8 – 1/O AWG
#8 – 1/O AWG
#8 – 1/O AWG

60 Amp
80 Amp
80 Amp

100 Amp

#6 AWG
#4 AWG
#4 AWG
#2 AWG

#14 – 2/O AWG

INSTALLATION INSTRUCTIONS

4. Connect black wires (line or phase) marked L1/A, L2/B or

L3/C, the white wire (neutral) marked N, and the green wire
(ground) marked G, of the SPD using the wire range listed
below. To yield the best performance of the SPD within the
electrical distribution system, keep all conductors as short as
possible and avoid sharp bends.

5. Connection to the unit’s summary alarm contacts shall be
with #18 – 22 AWG. The ratings of the Form ‘C’ contacts are
5 amps at 250 VAC maximum with a power factor of 1.0. For
additional information, see “Monitoring” section.

6. Apply power. The surge protector is fully operational when
the GREEN LEDs on the modules and the front door of enclosure
are illuminated. If the GREEN LEDs are extinguished or a RED

7. Periodically monitor the status of the LEDs. Reduced
protection exists if the GREEN LEDs are extinguished or the
RED LED is illuminated. Please contact Liebert/Emerson
Network Power Surge Protection at 1-800-288-6169 or

1-607-721-8840.

8. The protection modules in these SPDs may be replaceable,

contact Liebert/Emerson Network Power Surge Protection for
replacement.

(continued from page 6)

LED is illuminated, check to ensure that power is applied to
the SPD. If an abnormal indication is present, remove power to
the SPD and contact Liebert/Emerson Network Power Surge
Protection at 1-800-288-6169 or 1-607-721-8840.

Installation, Operation and Maintenance Manual 7 Liebert SPDs SL-22075 Rev 0, 9/2010

If the SPD model is a Wye configured unit (4W+G), and
a Neutral connection is not available, please contact
factory.

SUGGESTED BREAKER AND WIRE SIZE

Surge Protective Devices

MONITORING FEATURES

External Status Indicators (Standard) — These indicators

provide a summary of the status of the surge SPD module.
For normal conditions, the green “OK” LED is illuminated and
the red “Service” LED is extinguished. If the surge SPD module
requires replacement, the green “OK” LED is turned off and
the red “Service” LED illuminated.

Audible Alarm (Standard) — If the surge SPD module requires
replacement, an audible alarm is activated to draw attention
to the fact that repair service is required to restore the system
to normal operation. An audible alarm disable is provided to
silence the alarm. The system will automatically reset itself
after repair. The audible alarm switch and “Service” LED can be
tested by activating the “Test” switch on the system monitor
panel.

Summary Alarm Contact (Standard) — Two sets of summary
alarm Form C relay contacts (2 N.O. and 2 N.C.) are provided
for remote indication of the failed surge SPD module. Contacts
are rated 5 amps at 250 VAC maximum with a power factor of

1.0. Access to the contacts is provided via contact terminals
located on the printed circuit board mounted on the inside of
the unit’s cover.

Surge Counter (Optional) – The surge counter is provided for
transient voltage surge monitoring. The counter totalizes line
surges monitored since the last time the counter was reset.
The circuit counts all surges that deviate from the line sine
wave. The factory setting is 30% over nominal line voltage.
Other settings include 50%, 70%, and 100%.

TROUBLESHOOTING/ SERVICING/

MAINTENANCE

Troubleshooting

If status failure indication occurs or summary alarm contacts
has changed states, a qualified electrician shall first determine
if the systems voltage and proper phasing exists.

If the SPD remains in an alarm condition once the electrician
is satisfied that the electrical system and its connections are
normal, the unit should be repaired.

At this point consult the factory, having available the following
information:

• Unit identification number – (refers to the model and serial
numbers detailed on the data label and is located on the front
of the enclosure.)

• Nature of problem – (including status of all status indicators
and alarms).

Servicing

The Liebert SH Series comes with a ten year parts and five
year labor warranty (see Warranty Information). For servicing
assistance, contact your local Liebert Sales Representative or
Emerson Network Power, Surge Protection at 800-288-6169

or 607-721-8840.

ONLY QUALIFIED PERSONNEL SHOULD PERFORM
MAINTENANCE ON THE SYSTEM.

HAZARDOUS VOLTAGES ARE PRESENT INSIDE THE UNIT
DURING NORMAL OPERATIONS.

ELECTRICAL SAFETY PRE-CAUTIONS MUST BE FOLLOWED
WHEN SERVICING THIS UNIT.

TO PREVENT RISK OF ELECTRICAL SHOCK, TURN OFF AND
LOCK OUT ALL POWER SOURCES TO THE UNIT BEFORE
SERVICING UNIT.

Corrective Maintenance - The Liebert SPD is designed for

years of trouble-free operation. However, even the most
reliable equipment may fail under abnormal conditions.
Diagnostic indicators are provided to indicate when the unit
needs repair or replacement. To ensure continuity of surge
protection, failed units should be repaired or replaced at the
earliest convenient service opportunity. When replacing surge
modules, other components should be inspected for damage
and replaced if necessary. Standard electrical troubleshooting
procedures should be used to isolate problems other than failed
surge current diverter modules. When replacing components,
for continued proper operation and safety, replace only with
identically rated components. Please contact factory for
information on replacement parts.

Preventative Maintenance (Inspection and Cleaning) -
Periodic system inspections, cleaning, and connection checks
are recommended to ensure reliable system performance and
continued surge transient protection.

It is difficult to establish a schedule for preventative
maintenance since conditions vary from site to site. Inspections
for failed surge modules using available diagnostics should be
done routinely (weekly or monthly).

Installation, Operation and Maintenance Manual 8 Liebert SPDs SL-22075 Rev 0, 9/2010

Surge Protective Devices

Limited Warranty

This Warranty is given ONLY to purchasers who buy for commercial or industrial use in the ordinary course of each purchaser’s business.

General:
Liebert Corporation products and systems are in our opinion the finest available. We take pride in our products and are pleased that you have chosen
them. Under certain circumstances we offer with our products the following Ten Year Warranty Against Defects in Material and Workmanship.

Please read your Warranty carefully. This Warranty sets forth our responsibilities in the unlikely event of defect and tells you how to obtain
performance under this Warranty.

TEN YEAR LIMITED WARRANTY AGAINST DEFECTS IN MATERIAL AND WORKMANSHIP

LIEBERT PRODUCTS COVERED:

Liebert SH Series (Interceptor®)

Terms of Warranty:

As provided herein, the Liebert product is warranted to be free of defects in material and workmanship for a period of ten (10) years from the date
of product shipment from Liebert. The shipment date will be determined only from the Liebert bill of lading. If any part or portion of the Liebert
product fails to conform to the warranty within the warranty period, Liebert, at its option, will furnish new or factory remanufactured parts for
repair or replacement of that part or portion.

Warranty Extends to First Purchaser for Use, Non-transferable:

This Warranty is extended to the first person, firm, association or corporation for whom the Liebert product specified herein is originally installed
for use (the “User”) in the fift y United States (excluding territories) or Canada. This Warranty is not transferable or assignable without the prior
written permission of Liebert.

Assignment of Warranties:

Liebert assigns to User any warranties which are made by manufacturers and suppliers of components of the Liebert product and which are
assignable, but Liebert makes NO REPRESENTATIONS as to the effectiveness or extent of such warranties, assumes NO RESPONSIBILITY for any
matters which may be warranted by such manufacturers or suppliers and extends no coverage under this warranty to such components.

Drawings, Descriptions:

Liebert warrants for the period and on the terms of the Warranty set forth herein that the Liebert product will conform to the certified drawings, if any,
applicable thereto, to Liebert’s final invoices, and to applicable Liebert product brochures and manuals current as of the date of product shipment
(“Descriptions”). Liebert does not control the installation and use of any Liebert product. Accordingly, it is understood that the Descriptions are
NOT WARRANTIES OF PERFORMANCE and NOT WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE.

Obtaining Performance Under This Warranty:

Within a reasonable time, but in no case to exceed thirty (30) days, after User’s discovery of a defect, User shall contact Liebert at 1-800-LIEBERT
(543-2378) and request a return authorization number. User shall ship the product, with proof of purchase, to Liebert freight prepaid. Liebert
products shipped to Liebert without a return authorization number will be refused and returned freight collect to User at User’s expense. Liebert
products shipped by User to Liebert which have incurred freight damage due to User’s improper packaging of the product will not be covered by
this Warranty and any repairs or replacement parts, components or products needed will be invoiced in the full current price amount and returned
freight collect to User.

Subject to the limitations specified herein, Liebert will repair or replace, at its option, without charge for Liebert labor or materials, subsequent
to its inspection F.O.B. Liebert’s facility, the Liebert product warranted hereunder which does not conform to the Warranty. Replacement parts,
components or products shipped to User prior to Liebert’s receipt and inspection of the product claimed to be defective shall be invoiced in the
full current price amount and shipped freight collect F.O.B. Liebert’s facility. Warranty coverage will be extended only after Liebert’s receipt of
the claimed defective product within thirty (30) days of shipment of any replacement parts, components or products, if applicable, and only if
Liebert’s inspection discloses the claimed defect and the returned product shows no signs of treatment or use which would void the coverage of
this Warranty. All defective products and component parts replaced under this Warranty become the property of Liebert.

Warranty Performance of Component Manufacturers:

It is Liebert’s practice, consistent with its desire to remedy Warranty defects in the most prompt and effective manner possible, to cooperate
with and utilize the services of component manufacturers and their authorized representatives in the per formance of work to correct defects
in the product components. Accordingly, Liebert may utilize third parties in the performance of Warranty work, including repair or replacement
hereunder, where, in Liebert’s opinion, such work can be performed in less time, with less expense, or in closer proximity to the Liebert product.

Installation, Operation and Maintenance Manual 9 Liebert SPDs SL-22075 Rev 0, 9/2010

Items Not Covered By Warranty:

Surge Protective Devices

Installation, Operation and Maintenance Manual 10 Liebert SPDs SL-22075 Rev 0, 9/2010

Liebert Corporation

1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229
800 877 9222 Phone
(US & Canada Only)
614 888 0246 (Outside U.S.)
614 841 6022 FAX

Via Leonardo Da Vinci 8
Zona Industriale Tognana
35028 Piove Di Sacco (PD)
Italy
39 049 9719 111 Phone
39 049 5841 257 FAX

Emerson Network Power Asia Pacific
7/F., Dah Sing Financial Centre
108 Gloucester Road, Wanchai
Hong Kong
852 25722201 Phone
852 28029250 FAX

Liebert.com

Technical Support

607 721 8840 Phone
607 722 8713 FAX
800 288 6169 Toll-Free

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.

© 2010 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-22075 (9/10) Rev. 0 Printed in USA

Emerson Network Power.

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

AC Power
Connectivity
DC Power

Emerson Network Power, the Emerson Network Power logo and Business-Critical Continuity are trademarks and service marks of Emerson Electric Co.
©2010 Emerson Electric Co.

Embedded Computing
Embedded Power
Monitoring

Outside Plant
Power Switching & Controls
Precision Cooling

Racks and Integrated Cabinets
Services

Surge Protection