Fast Bypass Switch | High Performance Solutions | Chennuo Electric-Chennuo Electric

Bypass Switch (High Performance Switch)

The CNF series vacuum switch is used for bypass protection of power electronic semiconductor devices. The main contact of the bypass switch is connected in parallel with the power electronic semiconductor device. During normal operation, the main contact of the bypass switch is open. When the power electronic semiconductor device fails, power is supplied to the coil, quickly closing the main contact of the bypass switch, thereby bypassing the power electronic semiconductor device and allowing the system to continue operating. It is commonly used in flexible DC transmission and transformation equipment as a bypass switch.

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Feature

The main contact of the bypass switch is connected in parallel with the power electronic semiconductor device.

During normal operation, the main contact of the bypass switch is open. When the power electronic semiconductor device fails, power is supplied to the coil, quickly closing the main contact of the bypass switch, thereby bypassing the power electronic semiconductor device and allowing the system to continue operating.

Parameter

1. Closing speed ≤ 3.5 ms, with no bounce.

2. Main circuit current: 400A~2500A; wide voltage range: 1.14KV~3.6KV.
3. Mechanical holding function after actuation and manual reset function.
4. Features an easy-to-operate mechanical unlocking structure (from closed to open).
5. The shell and leads use environmentally friendly, flame-retardant materials (UL94-VO).
6. Adopts a fully enclosed structure with good insulation performance, compact size, and suitable for various installation scenarios

Tech. parameters	Model	400	630、800	1250	1600	2000/2500
Rated voltage of the main circuit	(V)	1140	3600	3600	3600	3600
Rated current of the main circuit	(A)	400	630、800	1250	600	2000/2500
Short duration power frequency withstand voltage	(KA)	4	6.3、8	12.5	16	25
Ultimate breaking capacity	(A/3times)	4000	6000	10000	0	10000
Electrical life	(10,000times)	1	1	1	1	1
Mechanical life	(10,000times)	10	10	10	10	10
Clearance between open contacts	(mm)	1.5±0.5	3±0.5	3±0.5	3±0.5	3±0.5
Overtravel	(mm)	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5
Closing time	(ms)	≤3	≤3	≤3	≤3.5	≤3.5
Bounce time	(ms)	≤1	≤1	≤1	≤2	≤2
Secondary control voltage	(V)	AC or DC:36/110/127/220/380or customized