Ensure the engine is off and the battery is disconnected. High voltage in the terminal box can be fatal.
: Delivers the regulated DC excitation current to the generator’s exciter stator. an-5-203 avr wiring diagram pdf
Before installing, ensure the generator is shut down and locked out. Installation Steps: Ensure the engine is off and the battery is disconnected
The AN-5-203 AVR Wiring Diagram PDF is recommended for: Before installing, ensure the generator is shut down
| Terminal | Signal | Description | | :--- | :--- | :--- | | | Excitation Input | Connects to the stator excitation winding (auxiliary winding). Usually 160–220V AC. | | S1 / S2 | Voltage Sensing | Connects to generator main output (L1 and N or L1 and L2). | | Z1 / Z2 | Frequency / RPM | Connect to the generator output to sense frequency for under-speed protection. | | U / V / W | Power Input (3-phase) | For 3-phase sensing. In single-phase, only U and V are used. | | A+/ A- | External Adjustment | Connects to an external 1kΩ – 10kΩ potentiometer for remote voltage trim. | | F+ / F- | Field Output | Connects to the exciter field winding (rotor). Polarity matters. |