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1A
Fig. 56 — Typical Autotransformer Starter Wiring Schematic (Medium Voltage)
LEGEND
AUX — Auxiliary
C — Contactor
CB — Circuit Breaker
COMM — Communication
COND — Condenser
CPT — Control Power
Transformer
CR — Control Relay
CT — Current Transformer
DISCH — Discharge
DS — Disconnect Switch
EVAP — Evaporator
FU — Fuse
GFCT — Ground Fault Current
Transformer
HPR — High Pressure Relay
ISM — Integrated Starter
Module
L — Main Power Supply
LL — Control Power Supply
MTR — Motor
PRESS — Pressure
PT — Power Transformer
ST — Shunt Trip
STAT — Status
TB — Terminal Block
TC — Transition Clear
TRANS — Transition
VFD — Variable Frequency
Drive
VL — Wire Label
Starter Vendor
Power Wiring
Starter Vendor
Control Wiring
Field Installed
Power Wiring
(supplied by others)
Field Installed
Control Wiring
(supplied by others)
Option — Starter
Vendor Wiring
Twisted Pair Wiring
by Starter Vendor
Customer Terminal
Connection