Sunwin

Generator AVR R438 Automatic Voltage Regulator R438 Leroy Somer AVR Regulator

EAN: 0797698172712

UPC: 797698172712

Voltage Regulators

Voltage regulation: 0.5%
Short circuit capability: 3 x Irated for 10 seconds (AREP or PMG excitation)
Voltage sensing:95 to 140 volts
Response time:Normal (1 sec) for 20% voltage
Net weight: 600g

automatic voltage regulator-R438:
The circuitry of the R438 Automatic Voltage Regulator (AVR) provides closed loop control of the generator output voltage by regulating the exciter field current. The R438 can be powered by AREP or PMG field excitation system and is fitted as an option on:
- 1000 Series Generators*
- 2000 Series Generators
- 3000 Series Generators
With the AREP excitation system the R438 AVR is powered by two auxiliary windings which are independent of the voltage detection circuit. With the PMG option the R438 AVR is powered by the PMG which is fitted at the rear end of the generator.
Load adjustment module (LAM):
On load impact, the rotation speed of the generator set decreases. When it passes below the preset frequency threshold, the LAM causes the voltage to drop by approximately 15% and consequently the amount of active load applied is reduced by approximately 25% until the speed reaches it's rated value again.
Specification:
Voltage regulation: ±0.5%
Short circuit capability: 3 x Irated for 10 seconds (AREP or PMG excitation)
Voltage sensing:
95 to 140 volts (50/60 Hz) or
170 to 260 volts (50/60 Hz) or
340 to 520 volts (50/60 Hz)
Net weight: 600g
Response time:
Normal (1 sec) for ±20% voltage variation
or Rapid (0.3 sec) for ±20% voltage variation
What is in box ?
1 x Automatic Voltage Regulator R438

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