Microcomputer-based harmonic elimination device

Baoding Aozhuo Electrical Equipment Manufacturing Co., Ltd. specializes in the production of various power distribution switch control equipment.

The AZ-WXZ196 series microcomputer-based harmonic elimination device is an intelligent power resonance elimination apparatus developed by our company. It effectively prevents accidents such as the burning of voltage transformers (PT) frequently caused by ferromagnetic resonance. This device is simple and convenient to use, requires no maintenance, has strong anti-interference capability, and can quickly eliminate ferromagnetic resonance of various frequencies with high accuracy.

It can also distinguish between overvoltage, ferromagnetic resonance, and single-phase grounding, providing corresponding alarm signals. Equipped with a communication interface, it transmits fault information to relevant departments for remote control. The device can monitor and display the voltage components of four frequencies—17Hz, 25Hz, 50Hz, and 150Hz—in the PT open-delta voltage in real time. In the event of a fault, it activates promptly, distinguishes between overvoltage, ferromagnetic resonance, and single-phase grounding, and issues corresponding alarm signals. If it is a resonance fault, the harmonic elimination component is quickly activated to eliminate the resonance. It also features a communication interface to transmit fault information to the control center for remote control.

Technical Parameters(1) Operating Power Supply: AC/DC220V (non-polarized), other specifications can be custom-made;

(2) Operating Environment Temperature: -20℃ to +60℃; Environmental Humidity: Maximum humidity 90%, no condensation on the surface;

(3) Eliminable Resonances: 17Hz (1/3 subharmonic), 25Hz (1/2 subharmonic), 50Hz (power frequency), 150Hz (3rd harmonic);

(4) Alarm Contact Capacity: AC250V, 5A; DC30V, 5A;

(5) Communication: RS485 interface, baud rate 1200~9600bps, MODBUS protocol.