Offers a main rating of 20 kW (25 kVA) and a standby rating of 22 kW (27.5 kVA). A soundproof box keeps operating noise levels at 59 dB (A). The unit has a mechanical regulator that maintains a stable 60 Hz state at 3-5% of no load at full load. An extended analog instrumentation control panel, including AC ammeter, AC voltmeter, frequency meter, AC breaker, motor meters.