A dual power supply automatic switching device and its control method
A technology of automatic switching and control methods, applied to circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of increased labor costs and high prices, and achieve the effects of convenient operation, simple structure, and strong economical practicability
Active Publication Date: 2016-12-07
GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a dual-power automatic switching device and its control method, aiming to solve the problems that the existing dual-power automatic switching device is expensive and the manual switching method increases labor costs and inconvenience
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[0035] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0036] Such as figure 1 As shown, the dual power supply automatic switching device includes the first circuit breaker QF1, the second circuit breaker QF2, the first circuit breaker electric operating mechanism QF1-S, the second circuit breaker electric operating mechanism QF2-S, the phase sequence relay RPR, the second circuit breaker The first delayed energization time relay KT1, the second delayed energization time relay KT2, the first micro relay KA1 and the second micro relay KA2: through the detection of the phase sequence relay RPR equipped on the first power supply 100, determine the first power supply 100 Whether it exists, if the first power supply 100 exists, the phase sequence relay RPR controls the first micro-relay KA1 and t...
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The invention discloses a double-power-supply automatic switching device and a control method of the double-power-supply automatic switching device. At any time when a first power supply exists, the device controls equipment to be supplied with power by the first power supply all the time, and only when the first power supply does not exists does the device control the equipment to be supplied with power by a second power supply. Because the device is only provided with two circuit beakers, electric operating mechanisms for the two circuit breakers, a phase sequence relay, two micro relays and two delay power-on time relays without intelligent controllers or voltage and current detection devices, the cost of the device is greatly lowered compared with a double-power-supply automatic switching device on the market. All components operate through circuits. The device is simple in structure, convenient to operate and high in economy and practicality.
Description
technical field [0001] The invention relates to the field of power supply control, in particular to a dual power supply automatic switching device and a control method thereof. Background technique [0002] The dual power supply automatic switching device is generally used in occasions with two power supplies, and is widely used, such as: IDC data room that needs to realize 365 days of uninterrupted operation throughout the year, some important instrument and control equipment rooms in power plants and power grids, and other needs In places where uninterrupted power supply is realized 24 hours a day, 365 days a year, the uninterrupted power supply of these places will directly affect the reliability of operating equipment in these places. Therefore, the dual power supply automatic switching device plays a very important role in these places. effect. However, in addition to the switch for two-way power switching, the dual-power automatic switching devices on the market gener...
Claims
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IPC IPC(8): H02J9/06
Inventor 潘展华邱育群原志锋
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD