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Surge Suppression Systems
Installation, Operation and Maintenance Manual 11 Liebert TVSS Units SL-22085 Rev 2, 11/2006
Typical Series Connections for Delta (3 Wire + Ground) System
N
G
Phase (s)
Neutral Neutral
Phase (s)
INPUT OUTPUT
Transient
Ground
Safety
Ground
Liebert
Active Tracking
Filter System
To
“Protected”
Load (s)
}
Neutral
(required)
Ground
’s
G
Phase (s) Phase (s)
INPUT OUTPUT
Transient
Ground
Safety
Ground
Liebert
Active Tracking
Filter System
To
“Protected”
Load (s)
}
Ground
’s
Typical Series Connections for Wye (4 Wire + Ground) or Single Phase (3 Wire + Ground) System
TERMINAL WIRE SIZE RANGE
FILTER CONTINUOUS PHASE AND TRANSIENT SAFETY
CURRENT RATING NEUTRAL TERMINALS GROUND TERMINAL GROUND TERMINAL
30 –100 A # 14 – 2/0 (1) # 14 – 2/0 (5) # 14 - # 4 (4)
225 A # 6 – 250 kcmil (1) # 14 – 2/0 (5) # 10 – 1/0 (4)
400 A # 6 – 250 kcmil (2) # 6 – 250 kcmil (2) # 6 – 250 kcmil (4)
800 A 2.75 x .50 Cu Busbar (3) # 6 – 250 kcmil (2) # 6 – 250 kcmil (4)
1200 A (2x) 6.0 x .25 Cu Busbar (3) # 6 – 250 kcmil (2) # 6 – 250 kcmil (4)
2000 A (3x) 6.0 x .25 Cu Busbar (3) # 6 – 250 kcmil (2) # 6 – 250 kcmil (2)
4000 A (5x) 6.0 x .25 Cu Busbar (3) # 6 – 250 kcmil (2) # 6 – 250 kcmil (2)
NOTES:
1. Single lug with single connection for Input and Output.
2. Single lug with dual connection for Input and Output.
3. Units must be installed with Busbar(s) only! Wire lugs are not U.L. approved.
4. Single lug with single connection.
5. Single lug with dual connection.
Installation, Operation and Maintenance Manual 18 Liebert TVSS Units SL-22085 Rev 2, 11/2006
Surge Suppression Systems
Type SS Series
L2
L1
N
A
B
C
GND
N
Service Panel For
Loads to be Protected
Phase L1
Phase L2
Dedicated
Disconnect
(Optional)
Disconnect/Main
Breaker For
Panel
Neutral Buss
Service Panel For
Loads to be Protected
Disconnect/Main
Breaker For
Panel
Dedicated
Disconnect
(Optional)
Neutral Buss
Ground Buss
Phase A
Phase B
Phase C
Polycarbonate Window
B
A
C
E
F
D
Type SS Series
Unit
Dimensions (Inches)
Weight
(lbs)
Suggested
Breaker Size
Suggested
Wire Size
(AWG)
Allowable
Breaker
Range
Allowable
Wire Range
A B C D E F
1 Phase
3 Phase
13.32
17.32
6.6
9.6
14.75
18.75
10
12
0.32
0.32
26
43
80 A
80 A
#4
#4
15A – 175A
15A – 175A
#14 – 2/O
#14 – 2/O
15.32
19.32
Liebert Interceptor II Printer S13 13 12/29/06 1:37:59 PM