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61004N<br />

Generalities Field of application<br />

Unit defi nitions<br />

Below is the list of SM6 <strong>units</strong> used in MV/LV<br />

transformer substations and industrial distribution<br />

substations:<br />

b IM, IMC, IMB switch<br />

b PM fused switch<br />

b QM, QMC, QMB fuse-switch combination<br />

b CRM, CVM contactor and contactor with fuses<br />

b DM1-A, DM1-D, DM1-S single-isolation<br />

disconnectable SF6 type circuit breaker<br />

b DMV-A, DMV-D, DMV-S single-isolation<br />

vacuum type circuit breaker frontal<br />

b DMVL-A, DMVL-D single-isolation disconnectable<br />

vacuum type circuit breaker lateral<br />

b DM1-W, DM1-Z withdrawable single-isolation<br />

SF6 type circuit breaker<br />

b DM2 double-isolation disconnectable SF6 type<br />

circuit breaker<br />

b DM2-W withdrawable double-isolation SF6 type<br />

circuit breaker only for 36 kV<br />

b CM, CM2 voltage transformers<br />

b GBC-A, GBC-B current and/or voltage measurements<br />

b NSM-cables for main incoming and standby<br />

b NSM-busbars for main incoming and cables<br />

for standby<br />

b GIM intermediate bus unit<br />

b GEM extension unit<br />

b GBM connection unit<br />

b GAM2, GAM incoming cable connection unit<br />

b SM disconnector<br />

b TM MV/LV transformer unit for auxiliaries<br />

b Other <strong>units</strong>, consult us<br />

b Special function EMB busbar earthing only for 24 kV.<br />

AMTED398078EN.indd<br />

DE59200EN<br />

Industrial distribution substations<br />

HV/MV substation<br />

Distribution switchboard<br />

DM1-A GBC-B QM QM IM IM IMB GBM QM DM1-S<br />

Incoming<br />

line<br />

MV/LV transformer substations<br />

QM NSM-busbarsGBM SM TM<br />

NSM-cablesQM CRM CRM DM1-W<br />

Standby<br />

generator source<br />

Distribution switchboard<br />

QM QM<br />

Incoming<br />

line<br />

GBC-B<br />

IM IMB GBM IM<br />

ATS: Automatic Transfer System<br />

Incoming<br />

line<br />

GBC-B<br />

ATS<br />

Standby<br />

source<br />

DM1-S DM1-S<br />

GBC-B<br />

ATS<br />

DM1-A<br />

Incoming<br />

line<br />

13

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