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|1. (WO2018020364) VOLTAGE LOSS PROTECTION CIRCUIT AND STARTING CABINET|
|Applicants:||JOHNSON CONTROLS AIR CONDITIONING AND REFRIGERATION (WUXI) CO., LTD.
JOHNSON CONTROLS TECHNOLOGY COMPANY
|Title:||VOLTAGE LOSS PROTECTION CIRCUIT AND STARTING CABINET|
The present application provides an improved voltage loss protection circuit, which includes a voltage loss coil protection circuit and an energy storage protection circuit, and a starting cabinet with the improved voltage loss protection circuit. The voltage loss protection circuit can control a first power supply according to the operation state of a second power supply. The first power supply provides power to a compressor and the second power supply provides power to an oil pump for sending lubrication oil to the compressor. When the second power supply encounters voltage loss or excessive voltage reduction, the voltage loss coil protection circuit or the energy storage protection circuit operates independently in parallel to cut off the first power supply from the compressor to prevent the compressor from running without lubrication oil.