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Overview
The CKRN25 indoor high-voltage vacuum load switch and the CKRN25-12D/T200-31.5 indoor high-voltage vacuum load switchfuse combination unit serve as control and protection devices for three-phase, 50Hz, 12kV AC distribution systems. These oil-free, non-toxic products pose no fire or explosion hazards and are extensively employed in industrial and mining enterprises, as well as in distribution substations within urban buildings. The latter provides more reliable protection for electrical equipment such as transformers than circuit breakers, making it particularly suitable for ring networks, dual-radial power supply units, and box-type substations.
The CKRN25-12D/T630-20 indoor high-voltage vacuum load switch (hereafter referred to as the load switch) is a three-phase, 50Hz, 12kV indoor device. It is suitable for use in industrial and mining enterprises' distribution substations and transformer stations, serving to protect and control electrical installations. It is employed for switching load currents, closed-loop currents, no-load transformer currents, and cable charging currents. It incorporates an earthing switch with short-circuit current breaking capability. Its operating mechanism supports both manual and motorised operation, facilitating the implementation of remote control, remote measurement, and remote signalling requirements within power systems.
The CKRN25-12D/T200-31.5 indoor high-voltage vacuum load switch-fuse combination unit (referred to as the combination unit) is a three-phase, 50Hz, 12kV indoor apparatus. It is suitable for use in distribution substations and transformer stations within industrial and mining enterprises, serving as a load control and short-circuit protection device. It incorporates an earthing switch capable of closing under short-circuit currents. Its operating mechanism can be manually or electrically actuated, facilitating the implementation of remote control, remote measurement, and remote signalling requirements within power systems.
