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Type LPM Type ACV & AII Type LPL
Installation Instructions
PowerSure Medium Exposure Series AccuVar Series PowerSure Low Exposure Series
1. Insure that all power is removed before beginning installation. A qualifi ed licensed electrician shall install all electrical
connections.
2. The SPD is provided in the enclosure type listed below. NEMA 12 enclosures are suitable for use in indoor installations. NEMA
3R, NEMA 4 or NEMA 4X enclosures are suitable for use in indoor or outdoor installations.
4. The SPD has obtained the short circuit current rating shown below.
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 of up to the rating
shown above, as described in the Standard for Safety, Transient Voltage Surge Suppressor (TVSS), Standard 1449, Second Edition,
dated August 15, 1996.
SPD Mounting Hardware SPD Mounting Hardware
Type SI (Page 15) 3/8" Type ACV/AII (Page 16) #8
Type H (Page 16) 3/8" Type LPM (Page 20) #10
Type SS (Page 18) 1/4" Type LPL (Page 21) #6
Type LM (Page 19) 1/4"
SPD Standard Enclosure Optional Enclosures SPD Standard Enclosure Optional Enclosures
Type SI NEMA 4 NEMA 4X Type ACV/AII NEMA 4X N/A
Type H NEMA 12 NEMA 3R, 4, 4X Type LPM NEMA 12 NEMA 3R, 4, 4X
Type SS NEMA 4X N/A Type LPL ABS Plastic 94V-0 NEMA 1
Type LM NEMA 12 NEMA 3R, 4, 4X
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
tables on the “Dimensional Information” pages in this manual. Mount surge suppressor using the hardware listed.
SPD Short Circuit Current Rating SPD Short Circuit Current Rating
Type SI 200,000 Symmetrical Amperes Type ACV/AII 200,000 Symmetrical Amperes
Type H 200,000 Symmetrical Amperes Type LPM 65,000 Symmetrical Amperes
Type SS 65,000 Symmetrical Amperes Type LPL 14,000 Symmetrical Amperes
Type LM 200,000 Symmetrical Amperes
Installation, Operation and Maintenance Manual 8 Liebert TVSS Units SL-22085 Rev 2, 11/2006
Surge Suppression Systems
Typical Parallel Installations
Surge Protective Devices (SPD)
Interceptor II Series
Type SI
Hybrid Advantage Series
Type H
Type SS Series Type LM Series
Surge Suppression Systems
Installation, Operation and Maintenance Manual 21 Liebert TVSS Units SL-22085 Rev 2, 11/2006
PowerSure Low Exposure Series - Type LPL
.188
(4X)
5.250
5.700
3.500
4.700
1/2” Offset
Conduit Nipple
Sta
tus
3.00 Max.
2.400
Status
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
Unit is equipped with Summary
Alarm Contacts. The #18 wires
are designated as follows:
YELLOW = Normally Open
ORANGE = COMMON
BLUE = Normally Closed
Unit is supplied from the factory with a
minimum length of 18” of #12 wire for
connection. It is REQUIRED that a 30A circuit
breaker or less be used for installation.
Liebert Interceptor II Printer S10 10 12/29/06 1:37:58 PM