The EPMG-1270 / 2470 is an auxiliary excitation power source for ac generators and is used with brushless self-excited (shunt) systems with continuous excitation current below 8A and intermittent excitation 15A up to 10 seconds.
This manual describes the EPMG-1270 and EPMG-2470 generator excitation booster systems by Kutai Electronics. These devices convert DC battery power to auxiliary excitation power for brushless self-excited generators, improving transient load handling and recovery from voltage dips. The systems are designed for continuous excitation currents under 8A and intermittent up to 15A for 10 seconds. Key features include adjustable trigger and gain settings, overload protection, and compatibility with voltage regulators. Installation requires connecting the unit in series with the voltage regulator output, with specific wiring and fuse requirements.
| Sensing Input | 80–600 Vac (Single phase) |
|---|---|
| Frequency | 50/60 Hz |
| Efficiency | Greater than 85% @ Full load |
| Operating Temperature | -40 to +60 ˚C |
| Max Excitation Current (EPMG-1270) | 8A |
| Max Excitation Current (EPMG-2470) | 25A |
| Weight (EPMG-1270) | 2.90 kg |
| Fuse Specification (EPMG-1270) | 60A |
| Fuse Specification (EPMG-2470) | 30A |
The EPMG-2470 supports a maximum excitation current of 25A.
EPMG-1270 requires AWG 8 (8.3mm²) and EPMG-2470 requires AWG 10 (5.3mm²).