Modular units

DE59704
DE59709
Characteristics of
the functional units
SM
Disconnector unit
Electrical characteristics
kA Ik/1s
25
20
16
12.5
AMTED398078EN.indd
Ir = 630 - 1250 A
Ir = 400 - 630 - 1250 A
7.2 12 17.5 24 36
Basic equipment:
b disconnector and earthing switch
b three-phase busbars
b operating mechanism CS
b 150 W heating element for 36 kV
Ir =
1250 A
b connection pads for dry-type cables
b voltage presence indicator
Ur
kV
DE53557
DE59718
Functional units selection
Other functions
TM
MV/LV transformer unit
for auxiliaries
kA Ik/1s
25
20
16
12.5
Ir = 50 A
7.2 12 17.5 24 36
kV
b two 6.3 A fuses, UTE (for 24 kV)
or DIN type
b LV circuit isolating switch
b one voltage transformer (phase-to-phase)
Optional accessories:
b auxiliary contacts
b key-type interlocks
b 1250 A three-phase upper busbars at Ir 630 A
b cable connection by the top for 24 kV (no internal arc withstand if selected)
b enlarged low-voltage control cabinet for 24 kV
b 50 W heating element for 24 kV
b 630 A three-phase upper busbars for severe operating conditions for 24 kV
b digital ammeter for 24 kV
b mechanical indication system and
auxiliary contacts for blown fuses
Ur
DE53558
DE59212
EMB
Busbars earthing
compartment unit
kA Ik/1s
25
20
16
12.5
Ir = 630 A
Ir = 400 - 630 A
7.2 12 17.5 24
Ur
kV
b earthing switch
b connection bars
b operating mechanism CIT
b installation on 630 A IM 375 mm or
DM1-A units (except additional
enclosure or connection enclosure
for cabling from above)
b require an key-type interlocks
adapted to the switchboard network
b auxiliary contacts
59