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Maxgeek R250 Generator Automatic Voltage Regulator Diesel Genset AVR for Leroysomer Generator
Description:
-Generator AVR R250 is a half-wave phase controlled thyristor type Auto Voltage Regulator and forms part of the excitation system for a brushless generator.
-In addition to regulating the generator voltage, the AVR circuitry includes under speed and sensing loss protection to ensure safe, reliable control of the generator.
-Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR. Which is linked with the main stator windings and the exciter field windings to offer closed loop control of the output voltage with load regulations of +/-1.5%.
Specification:
Voltage regulation: around ±0.5%
Supply range: 85-139V
Potentiometer for voltage setting: 1000Ω/0.5W min. setting range ±0.5%
Quick response: 500ms
Nominal excitation current: 5A
Maximum excitation current: 7A during 10s
Protection: fuse 8A
Function: U/F function, L.AM function
Operation at 50Hz:
-Threshold at 48 Hz without LAM for impacts between 30 and 40% of the rated load
-Threshold at 48Hz with LAM 13% for impacts between 40 and 70% of the rated load
-Threshold at 48Hz with LAM 25% for impacts >70% of the rated load
Operation at 60Hz:
-Threshold at 58Hz without LAM for impacts between 30 and 40% of the rated load
-Threshold at 58HZ with LAM 13% for impacts 40 and 70% of the rated load
-Threshold at 58HZ with LAM 25% for impacts >70 % of the rated load
Specific operating:
-Threshold at 57HZ without LAM for speed variations at a steady state >2Hz
-Threshold at 65HZ without LAM for speed and tractelec/gearlec (U/F gradient)
-Special: the factory setting 48HZ 2U/F gradient, a special programme is possible on request
-Threshold at 47.5 Hz without LAM for speed variations at a steady state >2 Hz
R250 SHUNT Excitation System:
The SHUNT excitation alternator is auto excited with a R250 voltage regulator. The regulator controls the excitation current according to the alternators output voltage. With a very simple conception, the SHUNT excitation alternator does not have a short circuit capacity.
Package List:
1 x Generator Voltage Regulator
