Load switch cabinet K

Load switch cabinet K

Both load switch cabinet K and primary major loop are sealed in the SF6 air box, and the load switch has “connected”, “isolated”, “grounded” three working positions. At the same time, during the load current breaking process, a special airway is available for “blow” arc extinction on the arc to ensure the safe and reliable breaking performance.

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Technical Parameter

Model YCC-K-12/T630-20 YCC-K-24/T630-20
Type report number 16Q0192-S 16Q0191-S
Rated voltage 12kV 24kV
Rated current 630A 630A
Rated frequency 50Hz 50Hz
1min rated short-time power frequency withstand voltage (phase / fracture) 42/48kV 65/79kV
Rated lightning impulse withstand voltage (phase / fracture) 75/85kV 125/145kV
Rated active load breaking current 630A 630A
Closed - loop breaking current of rated distribution line 630A 630A
Rated cable charging breaking current 25A 25A
Rated circuit charge breaking current 1A 1.5A
Rated short circuit closing current 50kA 50kA
Rated earthing switch short circuit closing current 50kA 50kA
Rated earth fault breaking current 31.5A 31.5A
Rated Charging Breaking Current under Rated Earth Fault 43.3A 43.3A
Rated current under fault conditions 1.73A 2.60A
Rated short-circuit withstand current (main circuit / ground circuit) 20kA 20kA
Rated short time withstand current duration 4s 4s
Rated peak withstand current (main circuit / ground loop) 50kA 50kA
Partial discharge test 20pC 20pC
Arc test 20kA/0.5s 20kA/0.5s
Annual leak rate ≤0.1% ≤0.1%
Mechanical life ≥5000 times ≥5000 times
Weight 1400:130kg/1600:140kg 1400:130kg/1600:140kg