However, since the central air conditioning system of the frequency conversion cabinet is designed according to the maximum load and a certain margin, in fact, it only runs at full load for more than ten days or even ten hours in the middle of the year, and the load is below 70%

However, since the central air conditioning system of frequency conversion cabinet is designed according to the maximum load and a certain margin, in fact, it only runs at full load for more than ten days or even more than ten hours in the middle of the year, and the load is below 70% most of the time. Usually the load of the refrigeration host in the central air-conditioning system can automatically adjust the load with seasonal temperature changes, but the matching refrigeration pump and cooling pump cannot automatically adjust the load. They operate at 100% load for almost a long time, resulting in a huge waste of energy and deteriorating the operating environment and quality of the central air conditioner.

With the increasing maturity of variable frequency technology, the frequency converter, PLC, digital-to-analog conversion module, temperature sensor, temperature module and other devices are organically combined to form a temperature difference closed-loop automatic control system, which can automatically adjust the output flow of the water pump. variable frequency speed regulation technology can not only keep the room temperature in an ideal state, making people feel comfortable and satisfied, but also make the entire system run smoothly. More importantly, its energy saving effect can reach more than 30%, which can bring good economic benefits.

variable frequency control cabinet (variable frequency electrical control cabinet/electrical control cabinet/electrical control cabinet) adopts electrical control cabinets developed by high-quality domestic and foreign companies. According to the working conditions, AC input reactor, output reactor, DC reactor and EMI filter can be installed in the frequency conversion control cabinet. Relays, programmable controller (PLC), programmable operating terminal (GOT), energy meter, cooling fan , etc. According to the working conditions of the system, there are various control buttons and indicator lights such as forward rotation, reverse rotation, motor speed increase, motor deceleration, inching forward rotation, inching reverse rotation, manual/automatic, emergency stop, variable frequency/power frequency, PLC control, touch screen, etc. It is set on the panel of the frequency conversion control cabinet and is currently relatively fixed. Escalator frequency conversion control cabinet, central air conditioning circulating water pump frequency conversion control cabinet, fan frequency conversion energy-saving cabinet, air compressor constant pressure air supply system (frequency conversion energy-saving soft start control system), etc.

This article is reproduced from the official website of Hangzhou Sanke Frequency Conversion Technology Co., Ltd.