User Manual

December 2007 IL42-4026E
3
Installation Wiring Diagrams
WARNING
!
Circuit closing devices must be used on current transformer secondaries. This applies to
Form 3S and 4S meters. Dangerous voltages may be present if current transformer
secondaries are open-circuited while the transformer is energized. Equipment damage,
personal injury, or death can result if circuit-closing devices are not used.
N
1
L
O
A
D
1
N
1
N
Form 1S
1 phase, 2 wire
self–contained
20E01
1
2
N
L
O
A
D
2
N
1
N
2
1
Form 2S
1 phase, 3 wire
self–contained
20E01
L
O
A
D
N
2
1
Service
control switch
1
2
N
2
N
1
Service
side
voltage
Load side
voltage
Form 2S
1 phase, 3 wire with
service control swith (open)
self–contained
16L03
Form 3S
1 phase, 2 wire
1 CT, no VTs
11G03
1
N
N
1
CIRCUIT
CLOSING
DEVICE
Form 3S
1 phase, 3 wire
1 CT, no VTs
11G03
1
2
N
N
2
1
CIRCUIT
CLOSING
DEVICE
Form 4S
1 Phase, 3 Wire
2 CTs, no VTs
11G03
1
2
N
N
2
1
CIRCUIT
CLOSING
DEVICE