What is the reason for the timing of the tripping of the high voltage cabinet

There are many possibilities for this:

First of all, we should confirm the reliability of the relay protection of the control and protection transformer switchgear - it is estimated that the possibility of this relay protection parameter changing due to fault is very large;

If it is normal, it depends on whether the upper and lower level parameters are set reasonably - if so, it is obviously that the parameter settings are unreasonable.

High-voltage switchgear refers to the power system power generation, transmission, distribution, power conversion and consumption in the role of on-off, control or protection, high-voltage switchgear according to the voltage level of electrical products, high-voltage isolation switch and grounding switch, high-voltage load switch, high-voltage automatic overlap and sectionalizer, high-voltage operating mechanism, high-voltage explosion-proof power distribution device and high-voltage switchgear and other categories. The switchgear has the functions of overhead inlet and outlet, cable inlet and outlet, bus connection and so on. It is mainly used in power plants, substations, petrochemical industry, metallurgical steel rolling, light industry and textiles, factories and mines, residential quarters, high-rise buildings and other different places.

There is no special electricity during this time, or check if the wiring is connected to other places.

1. If it can be determined that it is not a problem with the line and equipment, please replace the comprehensive protection device before putting it into operation.

2. After replacement, you should test again whether the comprehensive protection device trips regularly as you said.

3. If conditions permit, the recording data of the comprehensive protection device can be analyzed.

4. To add, please carefully check the operation of the transformer, the high-voltage line, the low-voltage equipment and the protection and setting of the main circuit switch, do not arbitrarily think that it is the problem of the comprehensive protection device, because the second problem is easy to solve, and there will be an accident if there is a problem.

I am in power operation, and I know the harm of this kind of thing, so I hope that the landlord can solve this problem smoothly as soon as possible.

Check the wiring on the high side of the high voltage.

Hello, glad to answer for you! 1. Reasons for the tripping of the high-voltage circuit breaker: its own fault (such as the loss of voltage coil burned out, etc.), and the action of other protection mechanisms to trip it, such as quick break (load short circuit), overcurrent, PT, motor temperature rise, transformer gas, etc.

Generally, the high-voltage circuit breaker does not use the so-called "overheating I2*RT" protection mechanism caused by excessive current. 2. The circuit breaker and load switch should be selected according to the line voltage, load size and load type. 3. The model of the circuit breaker is too large to have little impact on the load switch, but we must pay attention to the setting of the protection mechanism, and consider the economy!

1. High-voltage circuit breaker.

Tripping causes: self-failure (such as loss of voltage coil burned out, etc.), other protection mechanism actions to trip, such as quick break (load short circuit), overcurrent, PT, motor temperature rise, transformer gas, etc. Generally, the high-voltage circuit breaker does not use the so-called "overheating I2*RT" protection mechanism caused by excessive current.

2. Circuit breaker and load switch.

The type should be selected according to the line voltage, load size and load type.

3. The model of the circuit breaker is too large to have little impact on the load switch, but we must pay attention to the setting of the protection mechanism, and consider the economy! Zhejiang Yunkai automation equipment.

The wire on the switch is very hot because of the excessive load and other reasons, the circuit breaker should be configured according to the total power of the line, and the large one can not be blindly replaced. If the wire diameter is hot, it is necessary to replace or add a new set of wires to ensure it, and the short circuit should be configured according to the current and instantaneous current.

Electronic gate timingTrippingCheck on trippingLeakage protectorIf it jumps, it means that the appliance is leaking. If the electrical plug is dry, but it still shows leakage, please report the appliance for repair. The timing point trips, and the state posture indicates that there are high-power electrical appliances that are turned on at regular intervals when tripping.

The voltage of the main circuit is too large and it will cause tripping, it is also possible that the electrical appliance is damaged or leakage, and it will cause tripping when it is opened, and the solution can be to try to find the electrical appliance, if it is not a problem with the electrical appliance, you can seek the power department to overhaul the circuit.

How it works

The safe operation of the traction power supply system that supplies power to the electric locomotive should be ensured. In the event of an accident, it is installed in the opening and closing station of the traction substation.

The relay protection device in the sub-district kiosk is the short-circuit current generated by the accident.

Initiate. Automatically disconnect the circuit breaker that supplies power to the accident point to reduce the scope of the accident and ensure the safe operation of other equipment and the normal power supply to the non-accident line. This action of automatically disconnecting the circuit breaker due to an accident is customarily called tripping.

Summary. Hello dear, <>

Open the high-voltage cabinet, why automatically trip.

First, it is very likely to be related to the quality of the high-voltage distribution cabinet, the user did not pay attention to its quality when purchasing the distribution cabinet, and there are some on the market now.

Unqualified quality distribution cabinets also exist, therefore, their quality factors are also the main reason for the failure of distribution boxes, and there may be some different models of contactors.

Improper use caused its power brake to burn out, which caused a malfunction.

Second, the cause of the failure of the high-voltage distribution cabinet is also related to the surrounding temperature factors, such as some high temperature, low temperature environment, and humid environment.

Its use, and some distribution cabinets are set up outside, but also affected by the high temperature of the sun, these high temperature factors can make the temperature of the equipment of the distribution box rise, so that the high-voltage distribution cabinet components can not bear, so that some components in the electrical appliances overheating phenomenon leads to the occurrence of failure.

Third, the fault of the high-voltage distribution cabinet is also related to the AC contactor in it, the model and specification are incorrect, and the different lines of the distribution cabinet are handed over.

The capacity of the flow contactor is also different, and if it is connected incorrectly, it is easy to cause the contactor to burn out.

Open the high-voltage cabinet, why automatically trip.

Hello dear, <>

Open the high-voltage cabinet, why the automatic trip first, it is very likely to be related to the quality of the high-voltage distribution cabinet, the user does not pay attention to its quality when purchasing the distribution cabinet, and now there are some substandard quality distribution cabinets on the market, therefore, its quality factor is also the main reason for the failure of the distribution box, and the improper use of some models of different contactors may cause the switch to burn out, thus causing the failure. Second, the cause of the failure of the high-voltage distribution cabinet is also related to the temperature factors around the nuclear store, such as some high temperature, low temperature environment, humid environment will affect its use, and some distribution cabinets are set outside, but also affected by the high temperature of the sun, these high temperature factors can make the temperature of the equipment of the distribution box rise and change the car, so that the components of the high-voltage distribution cabinet can not bear, so that some components in the electrical appliance overheating phenomenon leads to the occurrence of failure. Thirdly, the fault of the high-voltage distribution cabinet is also related to the AC contactor in it, the model and specification are incorrect, and the capacity of the AC contactor is also different for different lines of the distribution cabinet, and if it is connected wrong, it is easy to make the contactor burn out.

Hello dear, <>

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First, it is very likely to be related to the quality of the high-voltage distribution cabinet, the user does not pay attention to its quality when purchasing the distribution cabinet, and now there are some substandard distribution cabinets on the market, therefore, its quality factor is also the main reason for the failure of the distribution box, and the improper use of some models of different contactors may cause its electric switch to burn out, thereby causing the fault. Second, the cause of the failure of the high-voltage distribution cabinet is also related to the surrounding temperature factors, such as some high temperature, low temperature environment, humid environment will affect its use, and some distribution cabinets are set outside, but also affected by the high temperature of the sun, these high temperature factors can make the equipment temperature of the distribution box rise, so that the components of the high-voltage distribution cabinet can not bear, so that some components in the electrical appliance overheating phenomenon leads to the occurrence of failure. Third, the fault of the high-voltage distribution cabinet is also related to the AC contactor in it, the model and specification are incorrect, and the capacity of the AC contactor is also different for different lines of the distribution cabinet.