Siemens SENTRON PAC4220 - Page 56

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NONONO
1)
The fuses are only used for cable protection.
All commercially available miniature circuit breakers up to 20A(C) can be used.
2)
Connection of supply voltage
3)
Install a short-circuit device. Protection against overvoltage when the secondary transformer
cir
cuit is open.
4)
Cir
cuit breaker
Figure4-10 Connection type 3P3WB, with voltage transformer, with 1 current transformer
(11) 2-phase measurement, 3 conductors, unbalanced load, without voltage
transf
ormer, with 2 current transformers
Connection type 3P4W
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/19
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9
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9
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9
1
NONONO
1) The fuses are only used for cable protection.
All commerciall
y available miniature circuit breakers up to 20A(C) can be used.
2) Connection of supply voltage
3) Install a short-circuit device. Protection against overvoltage when the secondary transformer
cir
cuit is open.
4)
Circuit breaker
Figure4-11 Connection type 3P4W, without voltage transformer, with 2 current transformers
Connection
4.3Connection examples
PAC4220
54 Equipment Manual, L1V30827278B-01