Why does the high voltage prepaid metering box explode?

It may be that the insulation is not enough or the meter is wired incorrectly (the voltage and current are reversed);

If it has been running for a period of time, it may be that the secondary wiring of the current transformer is connected or broken to form a secondary open circuit, which saturates the core of the current transformer and produces high voltage and high temperature.

The high-voltage metering box is mainly used for high-voltage electric energy metering, especially for medium and small transformer users, and can completely and accurately measure active energy and reactive energy.

As the main components inside the metering box are high-voltage current and voltage transformers, if the first is the case, there are only two situations that can cause the first time. 1. The quality of the voltage transformer is not good or the capacity is too small; 2. The high-voltage cable head is not done well, and the insulation breaks down. I have encountered both of these situations, and the current transformer ** is rare, unless it is its secondary side open circuit, it is only the transformer heat, squeak, resulting in inaccurate measurement, very little**!

If it is the first time to use the power transmission, it may be that the insulation is not enough or the meter is incorrectly wired (the voltage and current are reversed); If it has been running for a period of time, it may be that the secondary wiring of the current transformer is connected or broken to form a secondary open circuit, which saturates the core of the current transformer and produces high voltage and high temperature.

The front is very good, so I won't say more.

It is used in residential areas, factories, individual electricity and other places, and the characteristics are metered and settled by electric energy meters.

Each metering box (cabinet) is equipped with an IC card controller (or negative control terminal), and each controller (terminal) is equipped with an IC card (SIM card), which is not common to each other.

The electric energy charging controller device is fully automatic, automatically tripping when underpowered, and automatically closing after power purchase; The tripping power and tripping load can be set arbitrarily.

1.The quality of the vacuum circuit breaker is determined by the core components inside, the interrupter and the operating mechanism;

2.The quality of the high-voltage metering box is stable mainly depends on the permeability of the core of the voltage transformer and the insulation performance of the casting;

3.The quality of the prepaid control box is nothing more than the electronic components inside.

There are many manufacturers in the field industry that produce high-voltage prepaid metering boxes, and high-voltage equipment should still consider the cost performance of products under the premise of quality.

High-voltage prepaid metering box pays attention to the use of circuit breaker and metering box, and the integration of cost control device, the metering box provides electric energy metering to the cost control device, and the cost control sends a signal to the circuit breaker.

The metering box is also a transformer, and there should be more in Baoding. Is your suitability the best fit or the right quality?

Hello, make a simple one about your problem, I hope it helps you!

The intelligent code rolling part is mainly composed of three parts: detection, judgment and control. The detection part mainly completes the opening of the metering box and the detection of the replacement signal. At the heart of the unit is a simplified, high-performance microcontroller.

In order to ensure the safety and reliability of the whole device, no malfunction and low power consumption, the device is usually in a non-energized working state, and only starts to work when the metering box is opened. The electronic key uses a non-volatile memory chip that can be rewritten multiple times, which can be designed to open a lock with one key, or multiple locks with a key, and uses multi-digit coding to achieve the purpose of confidentiality. In the actual use process, you can also change the residual password at any time as needed.

Is this equipment needed?

The prepaid meter box includes a main box with inlet and outlet holes, a meter installed inside the main box, a wire duct inlet control switch and an outlet control switch, The main box is also provided with a card slot for sensing the IP, and the meter, card slot and outlet control switch are successively set in the main box from top to bottom and connected by wires. The upper part of the main box is provided with waterproof air vents on both sides. In this practical new type of electricity meter, an IP-card sensing slot with prepaid function is installed in the new type of electricity meter, and the waterproof air vents are located on both sides of the upper part of the main box. The use of the electricity meter box not only has the function of counting, but also has the function of swiping the card to collect fees, so that the power department can collect the electricity bill and prevent the user from stealing electricity. It can also prevent rainwater from intruding and prolong the service life.