Due to the sudden increase in electrical equipment, the power of power transformers cannot increase synchronously, resulting in significant voltage fluctuations at the user's location (especially in small factories). When the voltage is low, the frequency converter will alarm and stop, and the motor current will increase, causing severe heating. This can easily form a vicious cycle and sometimes unable to produce. In the ceramic industry, the production line scale is getting larger and larger. As the distance between the transformer and the load increases, the line loss causes a voltage drop (measured to be up to 60-70V). For example, in ceramic factories, when the edge grinder is fully turned on, the voltage drops to 320V, causing a large increase in motor current, severe heating, frequent tripping, and line heating, resulting in increased power consumption. Based on this situation, we have developed this automatic voltage regulation control board.
At the earliest times, power factor controllers were also used, but they required the connection of current transformers, and when the load was light (with low current), there was basically no compensation or very little, and the voltage could not meet the requirements. The design concept is to rely on current and voltage to adjust the power factor,
The CBQ-1 automatic voltage regulation control board adopts a microcontroller, which only collects voltage signals without the need for current transformers, with a response time of 5-10 seconds. The control voltage is adjustable, usually acting below 380V. When the voltage is between 380-390V, it only detects and does not act. If the voltage is higher than 420V (the values of these voltage points can be adjusted freely through the potentiometer on the board), all outputs are cut off. Especially suitable for use in places with low or unstable line voltage (which cannot be achieved by power factor control).