1. High quality and excellent perfomance 2. Suitable for 11KV, 12KV 3. Silicone rubber insulator 4. Rich export experience.

11KV AC HV Disconnecting Switch, Isolator Switch/ disconnect switch /knife type switch protection

 The YDDCD Disconnect Switch is a single-phase hookstick operated switch utilized to sectionalize or isolate circuits on electrical distribution systems up through 12 kV. The distribution switch can be mounted on a single or double cross arm and is rated for 630 or 900 amperes continuous current and 25KA/3S amperes momentary.

Rating	Parameter
Maximum Voltage (kV)	11 --12
BIL (kV)	110
Continuous Current (A)	630/900
Momentary Withstand (kA)	40

Technical Parameter

Type		YDDCD-12/630	YDDCD-12/900
Rated voltage		12kV	12kV
Rated current		630A	900A
Rated frequency		50Hz	50Hz
Rated short time withstand current		25kA/3S	25kA/3S
Rated peak withstand current		63kA	63kA
Power frequency withstand voltage (dry, 1 minute)	Relatively earth	54kV	54kV
	Between fracture	61.5kV	61.5kV
Power frequency withstand voltage (wet, 1 minute)	Relatively earth	38.5kV	38.5kV
	Between fracture	46.5kV	46.5kV
Impulse withstand voltage(BIL)	Relatively  earth	110kV	110kV
	Between fracture	110kV	110kV

 

11KV AC HV Disconnecting Switch, Isolator Switch/ disconnect switch /knife type switch protection