Vertical downlead grounding device for transformer substation

Abstract

The invention provides a vertical downlead grounding device for a transformer substation. The vertical downlead grounding device comprises a grounding clamp, a grounding connecting wire and an installing pole, wherein the grounding clamp comprises a wire clamping assembly, a screwing assembly and a damping steering assembly; one end of a rotating rod of the wire clamping assembly is articulated with a clamping plate, an external thread is arranged at the other end of the rotating rod of the wire clamping assembly, and the clamping plate stretches out of a wire clamping shell; a rotating groove is formed in a screwing seat of the screwing assembly, a pin rod is fixed inside the rotating groove, one end of a screwing rod stretches into a cavity, a threaded hole is formed in one end of the screwing rod, the other end of the screwing rod stretches into the rotating groove, a turning hole is formed in the other end of the screwing rod, the pin rod passes through the turning hole, a fixed sleeve sleeves the outside of the screwing seat, and the screwing seat is provided with a rotating bulge; a first connecting plate of the damping steering assembly is fixed with the wire clamping shell, a second connecting plate of the damping steering assembly is fixed with the fixed sleeve, a connecting screw rod is fixed on the second connecting plate, the connecting screw rod passes through the first connecting plate and is matched with a connecting nut; an installing groove is formed in the installing pole; and wiring terminals are arranged at two ends of the grounding connecting wire. The device is firm, so that the risks of high-altitude falling and electric shock are greatly reduced.

Description

Technical field [0001] The invention relates to a grounding device, in particular to a vertical down conductor grounding device for a substation. Background technique [0002] Electrical installations must be connected to a short-circuit grounding wire during power outage construction and maintenance to ensure that the construction personnel are working within the protection range of short-circuit grounding. At present, the grounding devices of substations are mainly realized by grounding clamps. The clamp clamps commonly used for short-circuit grounding protection in substations are spring clamp clamps and spiral compression clamps. The spring clamp type clamp is easy to use and operate, but the clamping force is not enough to withstand the impact of large short-circuit current, and there is a safety hazard. Spiral compression clamps have slow operation speed and low construction efficiency. Moreover, the grounding device can only be used when horizontally arranged wires are gr...

AI Technical Summary

Problems solved by technology

The spring clamp is easy to use and operate, but the clamping force is not enough to withstand the impact of a large short-circuit current, which poses a safety hazard

The operation speed of the spiral compression clamp is slow, and the construction efficiency is low, and the grounding device can only be used when the wires arranged horizontally are grounded, and it has no effect on the high-voltage wires arranged vertically or obliquely.

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