How To Wiring Compressor with Capacitor || CSR Wiring in Ac #wiring #acrepair @Avonbltr

CSR Wiring in AC (Capacitor Start and Run) – Description:

CSR (Capacitor Start and Run) wiring in an air conditioner (AC) refers to the electrical configuration used in single-phase motors, where two capacitors are used:

1. Start Capacitor – provides a high starting torque for the motor.
2. Run Capacitor – improves efficiency and performance during regular operation.
Components in CSR Wiring:

Compressor Motor (Single-phase)

Start Capacitor (Cstart)

Run Capacitor (Crun)

Potential Relay or PTCR (Positive Temperature Coefficient Resistor)

Power Supply (L, N)
Working Principle:

When the AC is switched ON, both start and run capacitors are engaged.

The start capacitor helps the motor overcome initial inertia by providing a phase shift and high torque.

Once the motor reaches a certain speed, the start capacitor is disconnected by a potential relay or PTCR.

The run capacitor remains in the circuit to keep the motor running efficiently.
Wiring Configuration:

One end of both capacitors is connected to the start winding.

The run capacitor is connected between the start and run windings.

The start capacitor is wired in parallel with the run capacitor, but is disconnected after starting.

The main winding is connected directly to the power line.

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