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DE58360<br />

DE59212-Isc<br />

Characteristics of<br />

the functional <strong>units</strong><br />

DM1-S<br />

Single-isolation<br />

disconnectable CB unit<br />

with independent protection<br />

Electrical characteristics<br />

kA Ik/1s & Isc<br />

25<br />

20<br />

16<br />

12.5<br />

Ir = 630 A<br />

Ir = 400 - 630 A<br />

7.2 12 17.5 24<br />

AMTED398078EN.indd<br />

Ur<br />

kV<br />

DE53536<br />

DE59715<br />

Functional <strong>units</strong> selection<br />

SF6 type circuit breaker protection<br />

DM2<br />

Double-isolation<br />

disconnectable CB unit<br />

Outgoing line on right<br />

kA Ik/1s & Isc<br />

25<br />

20<br />

16<br />

12.5<br />

Basic equipment:<br />

b SF1 disconnectable 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 auxiliary contacts on circuit breaker<br />

b mechanical interlocking between circuit breaker and disconnector<br />

b VIP relay<br />

b three CR sensors for VIP relay protection<br />

b voltage presence indicator<br />

b connection pads for dry-type cables<br />

b downstream earthing switch 2 kA rms making capacity<br />

Version:<br />

b Sepam series 10 with auxiliary supply and<br />

three CR sensors<br />

Optional accessories:<br />

b cubicle:<br />

v three voltage transformers<br />

v key-type interlocks<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 />

b three CTs<br />

b 150 W heating element for 36 kV<br />

v 1250 A three-phase upper busbars at Ir 630 A<br />

v 630 A three-phase upper busbars for severe operating conditions for 24 kV<br />

v enlarged low-voltage control cabinet for 24 kV<br />

v connection enclosure for cabling from above for 24 kV<br />

v 50 W heating element for 24 kV<br />

b circuit breaker:<br />

v motor for operating mechanism<br />

v release <strong>units</strong> (coil)<br />

v operation counter on manual operating mechanism<br />

Ur<br />

kV<br />

DE53537<br />

DE59213<br />

DM2<br />

Double-isolation<br />

disconnectable CB unit<br />

Outgoing line on left<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 />

7.2 12 17.5 24<br />

b cubicle:<br />

v protection using Sepam programmable electronic unit<br />

v auxiliary contacts on disconnectors<br />

v 2 voltage transformers phase-to-phase or 3 voltage transformers phase-to-earth<br />

Ur<br />

kV<br />

51

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