The load switch of the high voltage outlet cabinet cannot be closed

It is normal for the live indicator of the outlet cabinet to not light up because of the load switch.

Didn't close. I don't know what model your cabinet is, and what kind of chain device is given. Generally, like you, the reason why you can't close the switch is because the upper end of the load switch is not electrified, so it will lose voltage and trip at the moment of closing.

You check the upper and lower isolation and the position of the operating handle, the disconnect switch.

Must be in the closed position, and the joystick must be in the "Operate" position.

1。Problems with electrical latches.

2.Mechanical problems.

Check the lower circuit first, and then see if it is a three-phase linkage when the load switch mechanism is moving.

It is recommended to let the manufacturer deal with it after sale, or give the manufacturer the best technical guidance.

It could only be that there is a problem with the outlet cabinet.

Reason why the high-voltage circuit breaker cannot be closed:

Confirm where the fault occurred in the mechanism. Remove the front panel of the circuit breaker, and press the closing half shaft under the closing coil with a tool to see if the circuit breaker can be closed.

If it cannot be closed, it means that it is from the main shaft of the circuit breaker mechanism to the closing half shaft. It may be that the drive rod is deformed.

If it can be closed, it may be that the closing button is dry at the closing half shaft, so that the closing is not triggered in place, and the closing button cannot be popped out because of dryness.

Hello, the possible reasons are: 1. A short circuit occurs inside the switch cabinet. 1.

The insulating base of the busbar's supporting insulators or plug-in contacts is dirty, damp or mechanically damaged, and is short-circuited due to flashover or discharge. The cleaning of filth should be strengthened, the damp should be dried, and the equipment with mechanical damage should be replaced in time. 2.

Improper selection of electrical components, such as insufficient circuit breaker breaking capacity, etc. A circuit breaker with a suitable breaking capacity should be selected. 3.

Misoperation. It is common to operate disconnectors under load. The operating procedures should be strictly implemented, and the misoperation should be eliminated.

4.The service tool is forgotten on the busbar. After the power outage maintenance, due to negligence, the wrench, screw and other maintenance tools were forgotten on the busbar, and the power transmission was not carefully checked, and a short circuit occurred after power transmission.

In strict accordance with the requirements of the regulations, the tools should be counted after the overhaul of the shirt to prevent forgetting. 5.Small animals cause short circuits.

Due to small animals (such as rats, snakes, etc.) burrowing into the switch cabinet, causing a short circuit. Install protective nets to prevent small animals from getting in. 2. The connection of Changqi cavity busbar is overheated.

1.Poor contact. Measures such as load shifting, power outage maintenance, or busbar replacement can be adopted.

2.The butt bolts are overtightened or too loose. When tightening, its tightness should be appropriate, generally tightened until the spring washer is flattened.

Check whether the secondary plug-in of the circuit breaker is well inserted, under normal circumstances, if the operation panel has only that, it means that the secondary plug-in has been plugged in; Check whether the control panel has an alarm signal, and if it closes remotely, it is necessary to check whether the switch is allowed to close (that is, whether the transfer is allowed to start). If there is no problem with the above, you need to contact the electrical secondary maintenance personnel to deal with it, and the inspection sequence is generally: check whether the closing button is good, whether the remote closing circuit is smooth, if it is normal, you have to find the entire closing and opening secondary circuit wiring, if there is no problem, you have to contact the electrical personnel to check the switch body.

Check whether the secondary plug-in of the circuit breaker is well inserted, under normal circumstances, if the operation panel has only that, it means that the secondary plug-in has been plugged in; Check whether the control panel has an alarm signal, and if it closes remotely, it is necessary to check whether the switch is allowed to close (that is, whether the transfer is allowed to start). If there is no problem with the above, you need to contact the electrical secondary maintenance personnel to deal with it, and the inspection sequence is generally: check whether the closing button is good, whether the remote closing circuit is smooth, if it is normal, you have to find the entire closing and opening secondary circuit wiring, if there is no problem, you have to contact the electrical personnel to check the switch body.

The high voltage is stopped for 2 hours and the power cannot be delivered, what is the reason?

Hello:-du1,The high-voltage cabinet is made up of metering, isolation, and dao

Right 2,The high-voltage cabinet is installed in front of the transformer and does not have the function of voltage transformation

Therefore, "the voltage that goes in from the inlet cabinet to the outlet cabinet comes out".The voltage does not change. Only the transformer behind the high-voltage cabinet will change the voltage.

The high-voltage ring main unit is a high-voltage device that throws and cuts two incoming power supplies, and is a high-voltage switchgear designed for dual power supply and multi-variable room, and does not participate in the work of changing the voltage, and the change voltage is completed by the transformer.

The voltage from the inlet cabinet to the outgoing cabinet is unchanged.

Hello dear, I'm glad to answer your questions The high-voltage outlet cabinet shows that the power supply is only available when you close it and open the door. Generally speaking, the power closing switch on the high-voltage outlet cabinet is used to control the power supply status of the power supply. When the power supply is closed and the switch is turned on, the power supply can be supplied to the equipment and circuit in the wiring cabinet normally.

If the power supply is turned off when the switch is closed, the power supply will be disconnected and no power can be supplied to the equipment in the outlet cabinet. Power closers are often one of the most important components used to control and protect a power supply. It is often used in conjunction with other protective devices such as circuit breakers, fuses, etc., to ensure that the outlet cabinet and the equipment in it are properly protected in the event of a power failure or other abnormal situation.

Therefore, under normal circumstances, the high-voltage outlet cabinet needs to have a power supply to close the switch to work properly.