Modular units

DE53541
DE59227
Characteristics of
the functional units
DMV-A
Single-isolation
circuit breaker unit
Electrical characteristics
kA Ik/1s & Isc
25
20
16
12.5
Ir = 630 - 1250 A
Ir = 400 - 630 -
1250 A
7.2 12 17.5 24
Basic equipment:
b Evolis circuit breaker frontal
b switch and earthing switch for 400 - 630 A
b disconnector and earthing switch for 1250 A
b three-phase busbars
b circuit breaker operating mechanism P2
b disconnector and switch operating mechanism CIT
b voltage presence indicator
b auxiliary contacts on circuit breaker
b three CTs
b Sepam series 20 programmable electronic unit
b connection pads for dry-type cables
b downstream earthing switch 25 kA rms making capacity
Optional accessories:
b cubicle:
v auxiliary contacts on the disconnector
v three voltage transformers
v key-type interlocks
v 50 W heating element
v connection enclosure for cabling from above
v 1250 A three-phase upper busbars at Ir 630 A
v 630 A three-phase upper busbars for severe operating conditions
v enlarged low-voltage control cabinet
AMTED398078EN.indd
Ur
kV
DE53542
Functional units selection
Vacuum type circuit breaker protection
DMV-D
Single-isolation circuit breaker unit
Outgoing line on right
b circuit breaker:
v motor for operating mechanism
v release units (coil)
v operation counter on manual operating mechanism
DE53543
DMV-S
Single-isolation circuit breaker unit
with independent protection
b 3 CR sensors for VIP relay
b VIP protection relay
b connection pads for dry-type cables
b downstream earthing switch
25 kA rms making capacity
53