Siemens SENTRON PAC4220 - Page 54

(7) 3-phase measurement, 3 conductors, unbalanced load, without voltage transformer,
with 2 curr
ent transformers
Connection type 3P3W
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/E
/F
,/
,/
,/,/,/,/
/19
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9

9

9
1
NONONO
)
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

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)
Cir
cuit breaker
Figure4-7 Connection type 3P3W, without voltage transformer, with 2 current transformers
(8) 3-phase measurement, 3 conductors, unbalanced load, with voltage transformer,
with 2 curr
ent transformers
Connection type 3P3W
Connection
4.3Connection examples
PAC4220
52 Equipment Manual, L1V30827278B-01