Modular units
Modular units
Modular units
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DE53538<br />
DE59715<br />
Characteristics of<br />
the functional <strong>units</strong><br />
DM1-W<br />
Withdrawable single-isolation<br />
circuit breaker unit<br />
Electrical characteristics<br />
kA Ik/1s & Isc<br />
25<br />
20<br />
16<br />
12.5<br />
Ir = 630 - 1250 A<br />
Ir = 400 - 630 - 1250 A<br />
Ir =<br />
1250 A<br />
7.2 12 17.5 24 36<br />
Basic equipment:<br />
b SF1 withdrawable circuit breaker<br />
b disconnector and earthing switch<br />
b three-phase busbars<br />
b circuit breaker operating mechanism RI<br />
b disconnector operating mechanism CS<br />
b voltage presence indicator<br />
b three CTs<br />
b auxiliary contacts on circuit breaker<br />
b 150 W heating element for 36 kV<br />
Ur<br />
kV<br />
DE53539<br />
DE59226<br />
Functional <strong>units</strong> selection<br />
SF6 type circuit breaker protection<br />
DM1-Z<br />
Withdrawable single-isolation CB unit<br />
Outgoing line on right<br />
kA Ik/1s & Isc<br />
25<br />
20<br />
16<br />
12.5<br />
b mechanical interlocking between circuit breaker and disconnector<br />
b earthing switch operating mechanism CC<br />
b connection pads for dry-type cables<br />
b downstream earthing switch 25 kA rms making capacity<br />
Version:<br />
b LPCT (only with Sepam series 20, 40 and 80)<br />
Optional accessories:<br />
b cubicle:<br />
v auxiliary contacts on the disconnector<br />
v protection using Sepam programmable electronic unit<br />
v three voltage transformers<br />
v key-type interlocks<br />
v connection enclosure for cabling from above for 24 kV<br />
v 50 W heating element for 24 kV<br />
v enlarged low-voltage control cabinet for 24 kV<br />
v 1250 A three-phase upper busbars at Ir 630 A<br />
v 630 A three-phase upper busbars for severe<br />
operating conditions for 24 kV<br />
v surge arresters (only for 630 A and 24 kV)<br />
Ir = 1250 A<br />
7.2 12 17.5 24<br />
b three-phase busbars<br />
b circuit breaker:<br />
v motor for operating mechanism<br />
v release <strong>units</strong> (coil)<br />
v operation counter on manual<br />
operating mechanism<br />
DM2-W<br />
Withdrawable double-isolation CB unit<br />
Outgoing line on right<br />
52 AMTED398078EN.indd<br />
Ur<br />
kV<br />
DE59702<br />
DE59716<br />
kA Ik/1s & Isc<br />
25<br />
20<br />
16<br />
12.5<br />
Ir = 1250 A<br />
Ir =<br />
630 - 1250 A<br />
36<br />
Ur<br />
kV<br />
b cubicle:<br />
v auxiliary contacts on the disconnector<br />
v key-type interlocks<br />
v protection using Sepam<br />
programmable electronic unit<br />
b circuit breaker:<br />
v motor for operating mechanism<br />
v operation counter on manual<br />
operating mechanism<br />
v opening and closing shunt trips