Carrier 19XL Fig. 51 Typical Wye-DeltaUnit Mounted Starter Wiring Schematic

Fig. 51 — Typical Wye-DeltaUnit Mounted Starter Wiring Schematic
LEGEND
1M, 2M — Main Compressor Contactors CB — Circuit Breaker CR — Control Relay CT — Current Transformer DS — Disconnect GF — Ground Fault GFR — Ground Fault Relay H1, H2 — Power Transformer Input
Terminal
HPS — High-Pressure Switch J—Module Connector L1, L2, L3 — 3-Phase Line Terminals NC — Normally Closed OL — Overload OS1, OS2, OS3 —3-Phase Current Power
Source to Oil Pump
PMR — PhaseLoss Reversal Relay PMRVR — Phase Loss, Phase Reversal,
Overvoltage, Undervoltage Relay
POT — Potentiometer PR — Pilot Relay S—Compressor Motor Start Contactor SMM — StarterManagement Module ST — Shunt Trip T—MotorTerminal TB — TerminalBoard TR — Transition Resistor TRFP — TransitionResistor Fault Protector X—VariableNumber X1, X2 — Power TransformerOutput Terminal
Dry Contact
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