The vacuum circuit breaker mainly includes three components: vacuum pump arc extinguishing chamber, electromagnetic induction or torsion spring actual operation organization, and support frame.
The life of the vacuum circuit breaker includes the life of the vacuum pump, the life of mechanical equipment and the life of electrical equipment.
Vacuum circuit breaker.
1. Maintenance cycle time.
The arc extinguishing chamber of the vacuum circuit breaker itself does not require maintenance. The vacuum circuit breaker only needs to be installed and adjusted as required, and the capital can be put into operation, and the maintenance during operation is relatively simple. During the operation of the vacuum circuit breaker, when the operation frequency reaches one-fifth of the life of the mechanical equipment, the power should be cut off to carry out comprehensive inspection and adjustment. Such as the life of mechanical equipment. When electrical equipment is at the end of its life, reduce inspection and adjustment cycle times as much as possible.
2. Check the specific content of the adjustment.
Inspection and adjustment mainly include the following aspects:
(1). Tighten the connecting parts of the main control circuit terminals.
(2) Clean up the actual operating organization and the casing of the arc extinguishing chamber.
(3) Add grease to the fitness exercise position, and replace the damaged and eroded position.
(4) Check the contact point for damage.
(5) Check the vacuum degree of the arc extinguishing chamber of the vacuum pump.
(6) Adjust other main parameters (mainly the circuit breaker opening distance. Check and adjust the reduced travel arrangement).
3. Clarify and replace the vacuum degree of the arc chute.
(1) Evaluation of the vacuum degree of the arc extinguishing chamber.
The vacuum degree of the vacuum circuit breaker is immediately related to the flame retardant performance and arc extinguishing characteristics of the isolating switch. In daily life, it is difficult to properly distinguish the vacuum degree of the arc extinguishing chamber. A common method is to apply the DC compression method to determine whether the vacuum degree is up to standard.
(2) Remove and replace the arc extinguishing chamber.
The work of dismantling and replacing the arc chute is relatively simple, and can generally be carried out according to the requirements of the manufacturer's manual. After disassembly and replacement, the installation specifications of the machine equipment. Stroke arrangement of the disconnector. Overtravel. Precisely measure distances. However, adjustments will need to be made when closing. Then carry out the output power AC withstand voltage test.
Post time: Apr-29-2022