Modular units

DE59700
DE59710
Characteristics of
the functional units
IM
Switch unit
Electrical characteristics
kA Ik/1s
25
20
16
12.5
AMTED398078EN.indd
Ir = 630 A
Ir = 400 - 630 A
7.2 12 17.5 24 36
Basic equipment:
b switch and earthing switch
b three-phase busbars
b CIT operating mechanism
b voltage presence indicator
b 150 W heating element for 36 kV
b connection pads for dry-type cables
Versions:
b CI2 operating mechanism
b CI1 operating mechanism
b in 800 A version for 24 kV, consult us
Optional accessories:
b motor for operating mechanism
b auxiliary contacts
b key-type interlocks
b release units (coil)
b operation counter
b 1250 A three-phase upper busbars
Ur
kV
DE59711
62.5
50
40
31.25
DE53518
kA Ima
Functional units selection
Network connection
IMC
Switch unit
b fault indicators
b Connection pads for two dry-type single-core cables for 36 kV
b digital ammeter
b surge arresters (for 36 kV and for 24 kV in 500 mm
wide cubicle)
Ir = 630 A
Ir = 400 - 630 A
7.2 12 17.5 24 36
b one to three CTs for 24 kV
b three CTs for 36 kV
Ur
kV
b CI1 operating mechanism for 36 kV
DE53519
IMB
Switch unit with earthing switch
Right or left outgoing
b three-phase bottom busbars
for outgoing lines (right or left)
b CI1 operating mechanism
b 630 A three-phase upper busbars for severe operating conditions for 24 kV
b visibility of main contacts for 24 kV
b pressure indicator device for 24 kV
b enlarged low-voltage control cabinet for 24 kV
b 50 W heating element for 24 kV
b cable connection by the top for 24 kV (no internal arc withstand if selected)
45