Automatic Voltage Regulator (AVR)

Diesel Generator Voltage Regulator AVR SX460-A for Stamford AVR from China

Diesel Generator Voltage Regulator AVR SX460-A for Stamford AVR from China

Model: AVR SX460-A
Origin: China
In stock: yes
warranty: 1 year
Product description: SX460 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator. In addition to regulating the generat
INQUIRY

Automatic Voltage Regulator AVR SX460-A for Generator

General description

In addition to being powered from the main stator, the AVR also derives a sample voltage from the output windings for voltage control purposes. In response to this sample voltage, the AVR controls the power fed to the exciter field, and hence the main field, to maintain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator.

A frequency measuring circuit continually monitors the generator output and provides output under -speed protection of the excitation system, by reducing the output voltage proportionally with speed below a pre -settable threshold. A manual adjustment is provided for factory setting of the under frequency roll off point, (UFRO). This can easily be changed to 50 or 60 Hz in the field by push -

on link selection.

Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator's output.

Technical specification (Detailed specification file download click here)

Model		Generator AVR SX460-A with Red Capacitor
Input	Voltage	Jumper selectable 95-132V ac or 190-264V ac
	Frequency	50-60 Hz nominal
	Phase	1
Output	Voltage	Max 90V dc at 207V ac input
	Current	Continuous 4A dc, intermittent 6A for 10 secs
	Resistance	15 ohms minimum
Regulation		+/- 1.0%
Thermal Drift		0.05% 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
Under frequency protection	Set point	95% Hz
	Slope	170% down to 30 Hz
Unit power dissipation		12 watts maximum	10 watts maximum
Build up voltage		4 Volts @ AVR terminals
Environmental	Vibration	20-100 Hz,50mm/se
		100Hz – 2kHz, 3.3g
	Operating temperature	-40 to +70℃
	Relative Humidity 0-70℃	95%
	Storage temperature	-55 to +80℃