Product Details

AS480 Voltage Regulator for Generator :

Product Description

The AS480 is a half-wave phase-controlled AVR which forms part of the excitation structure of the brushless generator. Which also incorporatesan interface to the optional excitation boost system(EBS) for the use where short-circuit current safeguarding is required.

Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR. The control and voltage sensing circuits have separate terminals,allowing the excitation power to be resulting directly from the stator winding for necessary applications or from an auxiliarywinding if sustained short circuit performance is essential. 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 +/- 1.0%, In response to his sample voltage, the AVR controls the power fed to the exciter field, and hence the main field, to sustain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator.

Sensing Input	Voltage	100-264 V ac 1 phase
	Frequency	50-60 Hz nominal
Output	Voltage	82 V d.c. @ 200 Va.c power input; 45 V d.c. @ 110 Va.c power input.
	Current	continuous 5A , transient 7.5A for 10 secs.
	Resistance	15 ohms minimum
Regulation		+/- 1%
Thermal Drift		0.03% per Deg. C change in AVR ambient
Typical system response	AVR response	20ms
	Filed current to 90%	80 ms
	Machine Volts to 97%	300ms
External voltage adjustment		+/-10% with 1 k ohm 1 watt trimmer; Increasing resistance lowers voltage; Fixed 15kOhm resistor enables 110V sensing
Under frequency protection		Set point: 94 -98% Hz
Unit power dissipation		12 watts maximum
Build up voltage		4 Volts @ AVR terminals
QUADRATURE DROOP INPUT		10 ohms burden
		Max. sensitivity: 0.07 A for 5% droop 0PF
		Max. input: 0.33 A
Over Excitation Protection	Set poit	67 Vdc +/-3% (fixed
	Time Delay	10-15 seconds (fixed)
Environmental	Vibration	20-100 Hz,50mm/se
		100Hz - 2kHz, 3.3g
	Operating temperature	-40 to +70 Deg. C
	Relative Humidity 0-70 Deg. C	95%
	Storage temperature	-55 to +80 Deg. C