Product Description

1. Description
KR440 Voltage Regulator (AVR) is a sealed electronic device that adjusts the rectified output power of the exciter armature by controlling the low-power exciter magnetic field, so as to achieve the control host.
Magnetic field current, stable output voltage requirements of brushless generator, with low frequency and no input signal protection device. It is also equipped with parallel compensation function, which meets the needs of customers to expand capacity.
2. Specifications
Input power: 170V ~ 265VAC, 50/ 60Hz
Detection power: 190V~270VAC 340~520VAC 50/60
Maximum output: 4A 95VDC
Voltage regulation rate: 0.5%.
Generator Field Resistance: 15 ohms minimum.
External potentiometer: 1KQ 1/2W potentiometer ±8%.
Voltage build-up (initial stage):
When the residual magnetism voltage is greater than 5V25Hz, the voltage will be established automatically. The low-frequency protection has a built-in protection circuit that reduces the output voltage when the engine speed decreases (refer to Figure 3)
Operating temperature: -40 C~60 C.
Size: 163mmL*138mmW*45mmH
3. Precautions when using
1. Precautions during installation: (Refer to Figure 1 for configuration)
The installation, connection and inspection shall be carried out by persons with professional knowledge. The regulator shall be installed in the generator in a place where it is protected from moisture and corrosion and is not easily touched by others. Under normal operating conditions, the surface temperature of the regulator will exceed 60c. During operation, please do not touch the heat sink of the regulator. Warning signs have been posted.
4. Adjustment
1. Low frequency adjustment (U/F).
When using at 50Hz, insert the "cross-line" between C, 50 (factory setting), when using at 60Hz, insert the "cross-line" between C, 60. The U/F potentiometer is used to set the frequency action value of the low frequency pro