An-5-203 Avr Wiring Diagram Pdf Exclusive Instant
Terminal Assignments: ┌─────────┬─────────────────────────────────────────────────────────────┐ │ Terminal│ Function │ ├─────────┼─────────────────────────────────────────────────────────────┤ │ P1, P2 │ Main power input – connects to generator main winding │ │ │ (typically 400V AC across two phases) │ ├─────────┼─────────────────────────────────────────────────────────────┤ │ P3, P4 │ Auxiliary/sensing input – connects to auxiliary winding │ │ │ (5–200V AC, used for voltage sensing) │ ├─────────┼─────────────────────────────────────────────────────────────┤ │ F+, F- │ Field output – supplies excitation current to generator │ │ (F) │ field windings (0–120V DC, up to 5A) │ ├─────────┼─────────────────────────────────────────────────────────────┤ │ S (S1,S2)│ Voltage adjustment trimmer – optional remote control │ │ │ (±15% adjustment range) │ ├─────────┼─────────────────────────────────────────────────────────────┤ │ U │ Undervoltage protection – connects to under-speed sensor │ │ │ (protects generator during low frequency) │ ├─────────┼─────────────────────────────────────────────────────────────┤ │ Z │ Frequency selection – jumper for 50Hz or 60Hz operation │ │ │ (adjustable via internal link) │ └─────────┴─────────────────────────────────────────────────────────────┘
Often caused by a failure in the residual magnetism. Check if the residual voltage is at least 5V .
┌─────────────────────────────────────┐ │ ┌─────────────────────────────┐ │ │ │ AN-5-203 AVR Board │ │ │ └─────────────────────────────┘ │ │ │ │ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ │ │ │ P1 │ │ P2 │ │ S │ │ F │ │ │ └─────┘ └─────┘ └─────┘ └─────┘ │ │ │ │ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ │ │ │ P3 │ │ P4 │ │ Z │ │ U │ │ │ └─────┘ └─────┘ └─────┘ └─────┘ │ │ │ └─────────────────────────────────────┘ an-5-203 avr wiring diagram pdf
High voltage is present. Ensure all breakers are off during wiring.
: 4.5/5
The AN-5-203 typically utilizes a series of labeled wires or terminals (A-B-C-D and J-K) to interface with the generator's internal windings.
Match the AVR's voltage range with the generator's operating voltage. Ensure all breakers are off during wiring
The AVR's internal power is derived from an auxiliary winding, typically ranging from . Adjustment & Controls
DC output terminals that connect directly to the generator exciter field stator windings. The AVR's internal power is derived from an
| Terminal | Label | Signal Type | Function | | :--- | :--- | :--- | :--- | | | S1, S2 (or 7,8) | Sensing (AC Input) | Connects to the generator main output (L1 & L2 / L & N). Typically 170V-260V AC. | | 3 & 4 | F1, F2 (or X, XX) | Field Output (DC) | Connects to the rotor's exciter field windings. Polarity sensitive. | | 5 & 6 | U, V (or P1,P2) | Power Input (AC) | Connects to the auxiliary winding (D+ / D- or Q winding). Typically 70V-130V AC. | | 7 & 8 | (Stability/Var) | Voltage Adj / Stability | External potentiometer for fine-tuning voltage (often optional). |
Check if the sensing wires are loose. If the AVR can’t "see" the output, it will keep pushing power into the exciter, causing a voltage spike.
