DC fast circuit breaker trunk

Abstract

The invention relates to a DC fast circuit breaker trunk, which is arranged in a switch cabinet and comprises a chassis, a breaker, a contact, a counter and a valve. The chassis is arranged between the inner sidewalls at the left side and the right side of the switch cabinet and can move in the switch cabinet; the breaker and the counter are respectively arranged on the chassis and can move along with the chassis; the counter is electrically connected to the breaker; and the back side of the breaker extends to form the contact. The valve is embedded into the back sidewall of the switch cabinet; the upper edge of the valve is hinged to the back sidewall of the switch cabinet and can turn around the upper edge thereof; and the chassis is movably connected to the valve through a valve propulsion mechanism. The DC fast circuit breaker trunk has compact structure and small occupied space; in comparison with other integrated circuit breaker trunks, the manufacturing and the installation are more convenient and the cost is lower; through the valve propulsion mechanism, the circuit breaker trunk can be quickly and easily pushed into or exited to a working position or an experiment position, the operations are simple, safe and more reliable, and the replacement is faster.

Description

technical field [0001] The invention relates to the fields of electrical and mechanical technologies, in particular to a handcart for a DC fast circuit breaker. Background technique [0002] With the continuous development of my country's electric power industry. As a part of the switchgear, the circuit breaker handcart needs to be reliably closed and opened in the working position and test position; in the process of pulling out and inserting, the circuit breaker cannot perform closing action in the locked state; the circuit breaker in the switch cabinet The conversion of these two positions within is realized by the movement of the handcart. When the circuit breaker is in the closed state, the handcart cannot be moved to prevent the operation with load from causing certain harm to the electrical equipment and operators. The chassis locking device of the handcart circuit breaker can avoid the malfunction of the circuit breaker and realize the safe and reliable operation o...

AI Technical Summary

Problems solved by technology

[0003] The circuit breaker handcart in the prior art also has safety problems in use, which is specifically manifested in that since the push-pull device of the switch cabinet and the device for controlling its opening and closing are two separate devices, the safety of the circuit breaker handcart The push-pull displacement and opening and closing control may be out of sync, which will bring great hidden dangers to the personal safety of operators and the operation safety of equipment

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