400-volt bypass switch, nuclear phase current and voltage monitoring device and using method

Abstract

The invention discloses a 400-volt bypass switch and a nuclear phase current and voltage monitoring device. The device comprises a multifunctional bypass switch cabinet which is composed of a cabinetbody structure of an iron plate piece, connectors of a low-voltage flexible cable which are installed and fixed at the two ends of the low-voltage flexible cable and can be quickly connected to cylinders such as screws in a pluggable mode, and a voltmeter, a three-phase ammeter and a phasing tester which are arranged on an upper panel. The invention discloses the 400-volt bypass switch and a usingmethod of the nuclear phase current and voltage monitoring device, the other ends of four low-voltage flexible cables on an incoming line side are inserted into corresponding incoming line end cablequick plugging interfaces on the multifunctional bypass switch cabinet in the complete device; after the bypass normally operates, whether the bypass can depend on shunting of the line to be overhauled or not is judged through the reading of the three-phase ammeter in the multifunctional bypass switch cabinet in the complete device. The method has the advantages that the personal safety is guaranteed, the bypass phase sequence can be conveniently and quickly checked and adjusted, and the operation efficiency and safety are improved.

Description

technical field [0001] The invention relates to the technical field of electric power construction auxiliary tools, in particular to a 400-volt bypass switch, a nuclear phase current and voltage monitoring device and a use method. Background technique [0002] With the rapid economic and social development, power users have higher and higher requirements for power supply reliability, and non-stop operation is one of the important measures to improve power supply reliability. In the non-stop operation, the 0.4 kV non-stop operation using the bypass operation method occupies a considerable proportion. The operators usually use the ordinary low-voltage air switch as the bypass switch, which cannot monitor the bypass current and voltage in real time, and cannot Quickly check the phase sequence on both sides of the switch, and the work preparation time is longer. Since the operator directly operates the opening and closing of the bypass switch, when the bypass switch insulation ...

AI Technical Summary

Problems solved by technology

In the non-stop operation, the 0.4 kV non-stop operation using the bypass operation method occupies a considerable proportion. The operators usually use the ordinary low-voltage air switch as the bypass switch, which cannot monitor the bypass current and voltage in real time, and cannot Quickly check the phase sequence on both sides of the switch, and the work preparation time is longer

Since the workers directly operate the opening and closing of the bypass switch, when the bypass switch insulation or mechanical failure occurs, it is easy to cause injury to the workers

At the same time, due to the short length of the low-voltage bushing of the transformer, the dense arrangement of equipment around the low-voltage bushing, and the complex working environment, it is difficult to reliably install the connector of the low-voltage flexible cable on the low-voltage bushing.

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