FRN12-12D series compressor-type load switch-fuse combination appliance

FRN12-12D series compressor-type load switch-fuse combination appliance and FN12-12 Compressor-type Load switch are new series of switchgear , which are applicable to the three-phase distribution system of 12kV and below, and are used for the control and protection of power equipment such as transformers, cables, overhead lines, etc; Especially suitable for terminal substations and box-type substations of urban and rural power grids. It is also applicable to the control and protection of ring network and double radiation power supply unit.

FN12-12D series pressure-type load switch can open and close load current and overload current.

FRN12-12D series compressor-type load switch-fuse combination can open and close load current, overload current, and break line short circuit current.

This series of products is characterized by compact structure, reasonable design, reliable interlocking and high insulation level; The spring energy storage operating mechanism makes the opening and closing speed independent of the operator's operating force; The arc is extinguished in the bell-shaped insulating cover, and the free gas during arcing will not lead to the reduction of insulation strength between phases or to the ground. The copper tungsten alloy arc striking pin and plum blossom main contact are used to make the switch conduct electricity reliably and have a long electrical life. This series of products are easy to maintain, easy to operate and reliable to operate, and have won high praise from users.

Work conditions

Altitude ≤ 1000m

Ambient air temperature: upper limit+40 ℃, lower limit - 25 ℃ (storage and transportation allowed at - 30 ℃)

The daily average value of relative humidity of air is not more than 95%, and the monthly average value is not more than 90% 

Seismic capacity: seismic intensity shall not exceed 8

The surrounding air shall not be obviously polluted by corrosive or combustible gases, water vapor, etc

No frequent severe vibration

The pollution level shall not exceed Level I

Executive Standards

GB3804-2004 3.6KV~40.5KV AC High Voltage Load Switch

GB16926-2009 AC High Voltage Load Switch-Fuse Combinations

IEC265-1 High-voltage load switch Part I: High-voltage load switch with rated voltage above 1kV and below 52kV

IEC420 (1990) High-voltage AC load switch-fuse combination apparatus