Insulating platform used for mounting series resistors of high-voltage circuit breaker switch-on-switch-off coil

Abstract

The invention relates to an insulating platform used for mounting series resistors of a high-voltage circuit breaker switch-on-switch-off coil. The insulating platform comprises an insulating plate and a resistor mounting component; the resistor mounting part is mounted on the insulating plate; resistor mounting holes, resistor supporting holes and fixed holes are formed in the insulating plate; the resistor mounting component comprises metal fixed sheets, insulating ceramic sheets, fixed rods, fixed rod nuts and fixed screws, wherein the metal fixed sheet is designed into an L shape, and connecting holes are formed in the two surfaces; the fixed screws pass through the connecting holes to pass through the resistor mounting holes to fix the metal fixed sheets on the insulating plate; and the fixed rods pass through the other connecting holes of the metal fixed sheets and the insulating ceramic sheets to be connected with the metal fixed sheets through the fixed rod nuts. By virtue of the insulating platform used for mounting series resistors of the high-voltage circuit breaker switch-on-switch-off coil provided by the invention, the platform for supporting and effectively fixing the resistors is provided, insulation and isolation can be realized in an all-around manner, and a safe operational space for the operation and maintenance staff is provided.

Description

technical field [0001] The invention relates to the technical field of electric equipment insulation, and more specifically, relates to an insulation platform for installing series resistors of opening and closing coils of high-voltage circuit breakers. Background technique [0002] At present, the series resistance of the box opening and closing coil of the outdoor pneumatic high-voltage circuit breaker mechanism is usually fixed on the box by auxiliary devices. There have been many times that the insulation between the series resistance and the box is reduced or the DC grounding phenomenon occurs. The problem is particularly prominent. The grounding of the series resistance of the opening and closing coil belongs to the negative grounding of the control circuit. The negative grounding may evolve into a two-point grounding and cause the circuit breaker to refuse to move. Failure to open the breaker correctly will cause failure protection or other backup protection actions,...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the auxiliary devices fixed in series resistance of opening and closing coils in the prior art are only relying on insulating tiles to achieve insulation and isolation. The insulating tiles are easy to age and cause insulation degradation, and operation and maintenance personnel need to frequently replace the insulating tiles. , the replacement process has technical defects of personal and equipment risks, providing an insulation platform for installing high-voltage circuit breaker opening and closing coil series resistance

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