Load switch-fuse combination

Load switch-fuse combination

For load switch-fuse combination, it is the load switch that bears the overload current and the closing & breaking of normal working current and also bears the closing & breaking of "transfer current". While the high-voltage fuse bears the short circuit protection of transformer high-voltage side and overload protection. For a set of load switch and the fuse with three triggers, once any trigger acts, its link gear will separate the brake of the three-phase load switch at the same time. The organic combination of both can help to meet the operating protection requirements of power distribution system under various normal and fault conditions.

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Technical Parameter

Model YCC-T-12/T125-31.5 YCC-T-24/T125-31.5
Type report number 15Q1691-S 15Q1690-S
Rated voltage 12kV 24kV
Rated current 125A 125A
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 circuit charge breaking current 31.5kA 31.5kA
Rated short circuit closing current 80kA 80kA
Rated transfer current 1750A 1450A
Rated commutation current 1750A 1450A
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 1400:178kg/1600:188kg 1400:178kg/1600:188kg