12kv Load Breaker Switch with Solid Switchgear

• Customization: Available
• Certification: ISO9001
• Shell Material: Stainless Steel
• Model NO.: SIS12/630/1250
• Voltage Level: Medium Voltage
• Installation: Fixed
• Structure: Cabinet
• Current: DC
• Color: Red/Brown
• Material: Epoxy Resin
• Frequency Withstand Voltage: 42 Kv
• Local Discharge: 10PC
• Transport Package: Carton
• Specification: 120mm
• Trademark: qiupu
• Origin: Cn
• HS Code: 8538900000
• Production Capacity: 10000000 PCS
• Package Size: 75.00cm * 75.00cm * 65.00cm
• Package Gross Weight: 220.000kg

Product Description

          The load switch adopts the pressure gas internal blowing structure, the arc extinguishing ability is strong, and does not affect the interphase and ground insulation, both the dynamic and static contacts have the arc contact, greatly increased the number of breakdowns.
        The fuse and the load switch room form the transformer protection circuit. The high voltage flow limiting fuse is installed in the insulated shell of epoxy pouring. After the fuse is broken, the firing pin is ejected and the load switch is divided.
(E) The actuator room is located on the front of the annular cabinet. In each functional circuit, the load switch is provided with a manpower(or electric) energy storage spring actuator, and the grounding switch is provided with a manpower energy storage spring actuator. The panel is provided with a separation and closing hole for the operation of the load switch closing and manual switch rotation and ground switch respectively. It is equipped with analogue wire, switch state display plate and lock position. The operation of load switch and ground switch has interlock device to prevent misoperation.
       The interlock of high voltage switchgear is an important measure to ensure the safe operation of power network, ensure the safety of equipment and person and prevent misoperation. This is also clearly stipulated in GB3906, 3-35kV AC Metal Closed Switch Equipment. Generally describe the interlock as: prevent misdivision, Misfit circuit breaker: prevent load separation, close isolation switch; Prevent the connection line(ground switch): prevent the connection line(switch) closed circuit breaker, load switch: prevent the accidental electrical interval. The content of the above five items to prevent electrical misoperation is referred to as "five precautions". "Five-guard" devices can be generally divided into three categories: mechanical, electrical and integrated. At present, there are many types of high voltage switchgear in the market, most of which have a more perfect interlock mode. However, there are still a lot of high voltage switchgear interlocks, especially mechanical interlocks are not perfect, can not fully meet the "five defense" requirements. For this reason, this paper deals with the KYN28-12 type metal closed armored removable switching equipment which is widely used in power system.

Item			Technical data
Rated voltage (KV)			3.6		7.2		12			24		40.5
Rated frequency(Hz)			50
Insulator(capacity)	insulating	Frequency withstand voltage 5 min (KV)	25	32		42		68			100
		Frequency withstand voltage 1 min (V)	2000
		Lighting impulse withstand voltage (KV)	40	60		75			125				185
		Local discharge (pc)	≤10
	Dispute bend (N)		≥1000