Schneider Barrier Features: First of all, Schneider Barrier Switch can be used to block the power supply, it is able to disconnect the live equipment from the high-voltage maintenance equipment, and it can also see a significant disconnection point on it. Secondly, the Schneider barrier switch can cooperate with the circuit breaker to achieve the purpose of changing the wiring mode of the system operation. Schneider block switches turn small current circuits on or off. In the high-voltage power distribution equipment, the barrier switch is used more, which can well ensure the safety of maintenance work.
Regarding the operation method of Schneider barrier switch, here Kexu editor will answer for you. It is divided into 3 parts. It includes the operation method when the barrier switch is closed, the barrier switch is opened, and the barrier switch with electromagnetic locking fails.
When performing the reverse operation, the operator must carefully check the true disconnection position of the circuit breaker. Regarding the three-phase linkage barrier switch, the three-phase rise and fall should be at the same time, and the difference should not be greater than 3mm, so that the blocking switch can be opened and closed.
1. Barrier switch closing operation method
If it is a manual operation, the operator should first dial out the interlocking pin and then close, the beginning should be slow, and when the moving contact is close to the static contact, it should be closed quickly to prevent arc light. If the arc is generated at the beginning of closing, the barrier switch should be closed immediately, and the operator is prohibited from pulling the barrier switch back, because the pullback will expand the arc light and cause further damage to the equipment. At the end of closing, the force should not be too strong to prevent the closing from being too deep and causing damage to the supporting porcelain bottle. After the barrier switch is closed, the operator should carefully check whether the closing is outstanding and whether the moving contact has completely entered the static contact, so as to prevent the dynamic and static contact from heating due to poor touch. With regard to the reversing barrier switch on the rotating shaft, the blade should be placed on the plane of the vertically fixed contact after closing, so as to ensure the pressure at the contact and the necessary touch resistance; For casement barrier switches, the blade should be turned to a horizontal position after closing, and its arm should be straightened. If the movable cap of the static contact is on the right, it means that the hammer rod of the moving contact arm is too closed.
When operating the field barrier switch in winter, the frozen ice and frost and snow on the contact can be rubbed off by several times of connection and disconnection, so that the barrier switch can ensure that the dynamic and static contacts are excellent after closing. The condition for the reliable operation of the barrier switch is that when the barrier switch has transmission equipment, it should be ensured by its correct adjustment; If there is no transmission equipment, the correct operation of the insulating rod should be ensured. Barrier switches of various specifications are not promised to fall automatically in the event of a short circuit, so the barrier switch should be locked with five anti-locking equipment when closing the azimuth. The personnel on duty need to carefully check these equipment, buckle the blocking switch with a pin after each blocking switch is closed, and lock the five-proof blocking equipment to prevent the blocking switch from automatically disconnecting and forming an incident.
2. Operation method of barrier switch opening
When the moving contact leaves the static contact, if an arc is generated, the operator should immediately close the barrier switch and stop the operation. However, when blocking the small load current and charging current, the arc will be generated when the blocking switch is opened, and the blocking switch should be disconnected quickly in order to eliminate the arc smoothly. At the end of the brake, it should be slow, this is to prevent the impact force on the damage to the supporting porcelain bottle and the operating tissue, * after the operation personnel should check whether the interlocking pin is sold well. After the barrier switch is opened, the operator should carefully check the true disconnection direction of the barrier switch, the air insulation distance of the disconnection should be qualified, and check that the moving contact has indeed been pulled to the end, and the point of view of the swing should meet the requirements of the manufacturer. Regarding the indoor barrier switch, if the disconnected insulation distance is not good, the insulating partition should be pierced, otherwise there will be a discharge short circuit incident between the live side and the side of the ground wire hanging in the power failure.
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