Do I need to open the current terminal connector during the calibration of the microcomputer protect

When the microcomputer protection device is calibrated, you need to open the uh current terminal, this kind of current terminal is really a very good one, you have to pass through its current terminal, and then you can connect the piece before you can design an aspect for him.

1. What is microcomputer protection?

The protection made of a microcomputer or a microcontroller is called microcomputer protection. Compared with traditional relay protection, microcomputer protection not only has hardware circuits to realize relay protection functions, but also has software programs with protection and management functions, which are highly adaptable; Conventional relay protection, on the other hand, only has hardware circuitry.

What are the advantages of microcomputer protection compared with traditional protection?

1) The program is adaptive, and can automatically change the setting value and sum according to the system operating state.

Characteristic. 2) There is accessible memory.

3) The characteristics of the relay can be flexibly changed in the field.

4) The protection performance can be improved even more.

5) Have the ability to self-test.

6) It is conducive to post-accident analysis.

7) It can exchange information with the computer and realize network management.

8) It can increase the function of the hardware.

9) It can work in a low-power transmission mechanism.

1. Protection, when a fault is detected, a trip command is issued in time.

2. Measure the function, detect voltage, current, frequency, active power, reactive power and other parameters.

3. The communication function is to send the data to the background monitoring to realize the four remotes.

4. Monitoring function, monitoring switch position, handcart position and so on.

After the implementation of a protective device on campus, it needs to be opened, and the connecting piece of the current terminal is OK, and an open connecting piece is better to operate the virus mutation legend.

It is best to open the current terminals in a row, but only if they are not open under load.

Weak current terminals should be separated. (3) In order to prevent the interference of AC current, AC voltage and DC circuit, which causes the microcomputer protection device to work abnormally, an anti-interference capacitor is designed and installed at the entrance of the AC and DC power supply of protection, and the current of the protection device is 、..

I think it should be needed, because you check, after all, you have to do a full range of inspections, so you have to open his full range to check.

In this case, there will definitely be this electronic terminal connecting piece, so it is very normal in this case.

Actually, I think I'd have to turn on its electronic serial if I had already fired the device.

You just can't turn on the computer and break the activation score line.

Do I need to open the current terminal connection during the calibration of the machine protection device? OK.

When the microcomputer protection device Jiangyan, do you need to open the current terminal connector? And is it necessary to open the current terminal connector during the calibration of the protection device?

A large current will be induced on the primary side and added to the busbar, resulting in reverse power transmission.

The two-phase current differential wiring method is generally used for the power supply of long-term balanced operation of three-phase current, and the transformer is an important power supply facility for power supply to the general area, and it cannot be guaranteed to be able to operate with three-phase load balance for a long time, so the protection mode of three current transformers should be adopted.

No, there are two ways to verify the relay protection: 1. Throw off the CT and directly test the comprehensive protection, and the input is the secondary current; 2. Serial input from the primary side of CT, the input is the primary current.

Generally, the second method can be done at the end of the field, so that both the wiring in the switch cabinet can be detected and the phase sequence can be detected.

No:1The calibration is specific to the protective device and should not introduce external devices and components.

2.If they are strung together, if there is a broken wire on the secondary side of the CT, then the current is passed into it, and the CT is opened. Not only does it violate the rules, but something big will happen!

What protective device? It is best not to, the secondary side should be connected to the protection room through the CT terminal box and connected to the protection device, if the CT is not properly wired, the consequences of the secondary open circuit will be unimaginable.

Where do you want to connect the tester?

The first is the input protection terminal of the voltage electroosmosis distribution.

Control loop terminals that open in and out.

Then the envy dust is its own power supply.

and the communication plexus refers to the interface.

No, at most, you protected the action but the circuit breaker did not.

According to the operation management of microcomputer relay protection device, the operator can switch the protection value area according to a specific method without stopping the protection device, but the value should be printed immediately after the switch and checked with the dispatching department!

No, it's better not to cut, it's very convenient when switching, there are a lot of troubles in the back, it's better to change the value directly.

Microcomputer protection is characterized by high protection accuracy, many protection categories, strong reliability, can record events, assist in measuring current, voltage and power, and fault recording function; The load capacity is relatively large, generally more than 500kva on the use of microcomputer protection, such as transformer protection device, line protection device, motor protection device, capacity of 2000kva and above transformer and motor at the same time configuration differential protection, 35kv and above transformer at the same time configuration backup protection, non-power protection, these can be found in the power company regulations, different regions; Some of the box transformers are also equipped with microcomputer protection, most of which are relay protection, mainly depending on the needs of users, and the cost of microcomputer protection is high, and users generally consider less.

Microcomputer protection is generally used in KVN28 these high-voltage cabinets, mainly to collect data, control and alarm, Shanghai Boji Intelligent Technology for you to answer, hope, thank you.

Medium and high voltage distribution cabinets of 6kV and above generally need microcomputer protection, simply put, most of the places where overcurrent relays were used in the past now use microcomputer protection devices. Busbars generally need microcomputer protection.

High voltage is required, and low voltage switches are also installed when needed!

Microcomputer protection has many advantages, the protection of electricity safety is very reliable, and it is generally used in the distribution network and will not be replaced often, which is much more practical and convenient than traditional protection.