1.Isolating switch, isolation switch, isolator 2.Silicone insulator 3.Rated voltage: 11kV 12kV 4.Rated current: 630a 900a

Description

YDDCD outdoor disconnect switch is used in 12kV power distribution system, rated current 630A or 900A, short-time withstand current 25kA/3S, peak withstand current 63kA. Frequency and lightning impulse withstand voltage can reach the level of 2000 meter above sea level. It should be operated under no load conditions.

1.Terminal pad (standard): high conductively silver - plated copper, oxidating resistant, remain silver to silver contact2.Back-up Springs (Standard): two stainless steel springs for high strength and superior corrosion resistance 3.Loadbreak Hooks (Standard): zinc - galvanized steel for corrosion protection, suitable for portable loadbreak tool.4.Pulling loop and latching device (standard): equipped with the cast copper latch, can operate the switch in any angle5.Copper Blade (Standard): the double deck blade processed with hard - drawn technology for superior stiffness6.Stainless steel pin (Standard): Stainless steel pin can position the blade at 90Oor 160O, 160O as original stand7.90 and 160 Angle  Open Position Latch (Optional): adjustable at the position in the 90 or 160 Angle8.Terminal pad (standard): high conductively silver - plated copper, oxidating resistant, remain silver to silver contact9.Insulators: can provide three kinds of insulator i.e. silicone rubber, epoxy resin, porcelain  10.Installing plate: are hot dip galvanized and provide with many sizes to suit for different spaces for installation.11.Serrated Slots (Standard): equipped with bolt and provide many sizes to suit different spaces for installation.

 

Technical parameter

Product specification		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
Rated power frequency withstand voltage (dry withstand, 1 minute)	phase to earth	54kV	54kV
	across isolating distance	61.5kV	61.5kV
Rated power frequency withstand voltage (wet withstand, 1 minute)	phase to earth	38.5kV	38.5kV
	across isolating distance	46.5kV	46.5kV
Impulse withstand voltage(BIL)	phase to earth	110kV	110kV
	across isolating distance	110kV	110kV
Creepage distance		≥ 496mm	≥ 496mm
Weight		≈7kg	≈8kg

10kV 11kV 12kV Outdoor Electrical Isolating Switch, Outdoor Isolation Switch