Maanshan purchases high-voltage switchgear. Chongchuan recycles high-voltage transformers and deals with false alarms caused by electrical faults, such as poor contact of the valve temperature line, leading to the computer display remaining at -5℃. Fault of overheat in compressor = heat-sensitive resistor embedded in the compressor motor winding, with a resistance value usually of 1kΩ. When the winding overheats, the resistance value increases rapidly, and when it exceeds 141kΩ, the thermal protection module SSM activates, cutting off the unit operation, and simultaneously displaying an overheat fault, with the TH fault indicator light illuminated. The causes of the compressor overheat fault are as follows: (1) Overload of the compressor, running with overcurrent. Possible reasons include: excessively high cooling water temperature, excessive refrigerant charging, or the presence of air or other non-condensable gases in the refrigeration system, leading to high compressor load, manifested as overcurrent and accompanied by high-pressure fault. (2) Electrical faults causing overcurrent operation of the compressor. Such as low three-phase power supply voltage or unbalanced three phases, leading to excessive current or current in one phase; damaged AC contactors, burned contact points, causing excessive contact current or excessive current due to phase loss.

Chongqian Purchases High-Voltage Switchgear

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Maanshan purchasing high-voltage switchgear, Chongchuan high-voltage transformer recycling

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