ZW□-12GG/630-20 high voltage dual power mutual switching deviceDetailed product description：

The ZW □ -12GG/630-20 high-voltage dual power interconnection device (hereinafter referred to as the device) consists of two parts: a high-voltage vacuum circuit breaker and an intelligent controller. Applied in a dual power supply system with AC frequency of 50Hz, rated voltage of 12KV, and rated current up to 630A, it automatically switches to another normal power supply when one power supply experiences a power outage or undervoltage, or ensures the continuity of power supply. At the same time, the interlock function of short circuit and over six protection effectively avoids unnecessary power supply shock in case of load failure. In the event of a power outage due to a malfunction in the commonly used power supply, the switching device can automatically switch the backup power supply, ensuring reliability and safety, and can also switch between the two paths according to the needs of the load. Specially suitable for important places where power outages are not allowed, as an important electrical control device to ensure continuous power supply, it is a newly designed, novel, high-performance, safe and reliable, highly automated, and widely applicable dual power automatic switching product with automatic switching. The product design ensures complete isolation of the two high-voltage power sources, and adopts a complete and reliable mechanical and electrical interlock, thus having very high safety and reliability. This product is suitable for dual power users who have high requirements for power supply reliability and safety, as a control and protection device for dual power supply systems.
The product is widely used in 10KV distribution lines for oil fields, mines, metallurgy, chemical industry, railways, communication, machinery, and 10KV lines for industrial and mining enterprises.

Main technical parameters of HZW-12 and ZWGG-12 high-voltage dual power supply interconnection device

project		unit	parameter
rated voltage		kv	twelve
Maximum operating voltage		kv	twelve
rated current		a	six hundred and thirty
Rated load breaking current		ka	twenty
Rated short-circuit closing current (peak)		ka	fifty
Rated peak withstand current		ka	fifty
1-minute rated short-circuit withstand current		ka	twenty
Rated insulation level	Power frequency withstand voltage (dry-type)	kv	forty-two
	Lightning impulse withstand voltage (peak value)		seventy-five
Rated operating sequence			o-0.3s-co-180s-co
mechanical life		time	ten thousand
Rated short-circuit current breaking times		time	thirty
Rated closing voltage for operating machinery		v	two hundred and twenty
Rated opening voltage for operating machinery		v	two hundred and twenty
Contact opening distance		mm	9±1
Overtravel		mm	three
Three phase asynchronous opening and closing		ms	≤2
Contact closing bounce time		ms	≤2
Average opening speed		s	1.2±0.2
Opening time	Under the highest operating voltage	s	0.025-0.05
	At the lowest operating voltage		0.03-0.06
Closing time		s	0.025-0.05
Main circuit resistance of each phase		μΩ	≤180
Allowable cumulative thickness of wear for dynamic and static contacts		mm	three