Technical Parameters:
Working PowerRange : AC(100-264)V
Overall Dimension : 105*140*38
Installation Dimension : 80*115*Ø5–4
Working Temperature : (-40~+70)˚C
weight : 0.3kg
Product Overview:
The SVR440 Automatic Voltage Regulator is a half-wave phase-controlled thyristor type automatic voltage regulator (AVR), which is part of the excitation system for the brushless AC generator. It integrates a wide range of functions in a small installation size by using surface-mount technology (SMT).
The power supply circuit of AVR uses high efficiency semiconductors to obtain the excitation voltage from the remanence. The AVR’s power supply and voltage sensing utilizes separated connection terminals, allowing the excitation power to be directly supplied from the main stator winding or, if there is a requirement for continuous short-circuit current, from an auxiliary winding.
The AVR is connected to both the main stator winding and the excitation winding and provides closed-loop control accuracy of ±1% for the output voltage.
To control the generator’s voltage, the AVR’s voltage sensing terminal samples the output terminal from the generator winding continuously. The AVR controls the current output to the excitation system based on the sampled data, thereby changing the strength of the main rotor field, and regulates the output voltage within specified range by compensating for motor load, speed, temperature, and power factor.
The frequency measurement circuit continuously monitors the motor output, and when the motor speed drops below a preset value, low-speed protection is provided by reducing the output voltage proportionally to the speed. The under frequency protection set point can be changed by adjusting the (UFRO) potentiometer. The 50Hz or 60Hz mode can be easily selected by connecting relevant terminals with jumpers.
The built-in protection circuit of AVR controls the over excitation status within a safe time, and it has a delay function that does not make response to over excitation caused by large starting loads or transient disturbances from the load.
Connection terminals are provided for remote voltage adjustment, allowing users to achieve precise control of the generator output voltage.
There is an analog input control terminal that can be connected to a power factor controller or similar compatible device.
It can be connected with the droop current transformer to operate in parallel with other similar generators.
-38x38.png){kind=small}
