Electricity testing grounding device preventing ground wire connection in electrified condition and preventing switch closing in the presence of ground wire

Abstract

The invention discloses an electricity testing grounding device preventing ground wire connection in an electrified condition and preventing switch closing in the presence of a ground wire. A panel is arranged on a vehicle body. A test power supply, an electrified display apparatus, an electricity testing lock, an observation window, a grounding switch manual operating hole, a buzzer, a vehicle in / out hole, a secondary bolt and five-prevention locks are disposed on the panel. The electrified display apparatus and the buzzer are both electrically connected with the test power supply. The vehicle in / out hole and the grounding switch manual operating hole are each provided with one five-prevention lock. The grounding switch manual operating hole is connected to a manual operating shaft. A push plate is disposed at the bottom of the vehicle body. A grounding switch is disposed on the vehicle body. A sensor is arranged on the grounding switch, and is connected to a moving contact through a contact arm. The grounding switch is provided with a grounding moving contact, and the grounding moving contact is provided with an opening / closing spring. A grounding static contact is arranged to face the grounding moving contact. The manual operating shaft is connected to the grounding switch. A grounding bar is disposed at the bottom of the vehicle body. The advantages of the device are that safety of operation and safety of maintenance workers are effectively guaranteed.

Description

technical field [0001] The invention relates to the field of inspection and maintenance of the running state of power transmission and transformation equipment, in particular to an electric testing grounding device with an anti-charge hanging ground wire and a ground wire closing switch. Background technique [0002] At present, the electrical inspection grounding device for busbar maintenance of 6-35kV metal armored cabinets is a simple and independent device with a single function, and has the following defects and problems: (1) There is no electrical lock for closing the ground wire. ⑵ There is no electrical lockout for anti-static connection to the ground wire. (3) There is no five-proof locking function of the microcomputer, which causes the grounding point of the electric test to be fixed and the operation hole (and button) of the grounding part is not locked, which does not meet the provisions of the "Electricity Safety Work Regulations". (4) There is no function of ...

AI Technical Summary

Problems solved by technology

[0002] At present, the electrical inspection grounding device for busbar maintenance of 6-35kV metal armored cabinets is a simple and independent device with a single function, and has the following defects and problems: (1) There is no electrical lock for closing the ground wire

⑶ There is no five-proof locking function of the microcomputer, which causes the grounding point of the electric test to be fixed and the operation hole (and button) of the grounding part is not locked, which does not meet the requirements of the "Electricity Safety Work Regulations"

(4) There is no function of checking the integrity of the live display device

(5) There is no observation window and electrical circuit for checking whether the grounding part is in good contact

⑹ Open the upper and lower isolation baffles of the switch cabinet without choice, and the lower static contact may have the risk of reverse power transmission

Due to the above defects, the existing technology cannot effectively guarantee the safety of operators and maintenance personnel.

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