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The HJ.15K3P380 AVR is a 3-phase automatic voltage regulator used in medium generators (typically 10–15 kW / kVA class). It controls excitation current to keep output voltage stable. �
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Core Specifications
Model: HJ.15K3P380
Type: AVR (Automatic Voltage Regulator)
Voltage: 380V (3-phase)
Wiring: 8 wires (usually 2 plugs × 4 wires) �
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Generator range: ~10–15 kW �
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Mounting: Inside alternator terminal box
8-Wire Connection Layout (Typical)
Exact colors vary, but function is standard:
1 Sensing Wires (2–3 wires)
Connected to generator output (phase-to-phase)
Detects voltage level
2 Excitation / Field Wires (2 wires)
Go to rotor (brushes)
AVR controls DC current here
3 Power Supply Wires (2 wires)
Feed the AVR from stator winding
4 Optional / Auxiliary (1–2 wires)