Excuse me, what brand of relay protection microcomputer comprehensive protection device is better?

Good brands on the market are expensive. I've got a cheap *** here. After all, in terms of time. It is newly developed, and it is more stable and affordable at the same price.

Now China's relay protection devices are the most advanced in the world. Among them, domestic brands such as Nanjing NARI, Beijing Sifang, Xu Ji are quite good, as well as Nanjing NARI, Hongtu Hi-Tech, Dongfang Electronics, etc. It is more famous in the world, but ** is too high.

State Grid Corporation of China.

The team has answered for you, I hope it will be helpful to you!

Nanjing Intailai's is good, and the service is in place.

You forgot about Guodian Nanzi.

Nari uses it the most, and there are also Quartet, Nanzi, and Xu Ji.

NARI's is good, if it is cheap, the expedition is also commonly used, Nanzi, Ziguang, Sifang, Zhuhai Malata joint venture, ABB Siemens, is too expensive, and the domestic NARI is doing well.

It's good to come to Yantec.

It must be Xu Jizongzi, NARI Jibao, Nanzi Jibao, and Beijing Quartet. Sum up from the four families.

GLB-2 microcomputer intelligent integrated protector is an intelligent protection device specially designed for the protection of generators in small hydropower stations. It takes PIC microcontroller as the core, with simple hardware, high precision, good stability and reliability, flexible setting and diverse functions. It has overload, overcurrent, short circuit three stages of anti-time current protection, as well as over-voltage, under-voltage, over-speed (flying), under-speed protection, over-speed, under-speed protection will be automatically according to the generator grid-connected (current" 6% IE is regarded as grid-connected state) situation for different processing.

In order to reduce unnecessary misoperation, the parameter modification must be correctly entered in the password to be carried out. In addition, the protector also has the function of regular comparison and refresh of the parameter set value, so as to be foolproof.

This protector can completely replace the traditional multi-relay and mechanical protection devices, simplifying the installation and improving reliability. In addition, the installation also has the digital display function of voltage, current and frequency of the power generation and lifting machine, which directly displays the actual value (no longer the proportional value), which is easy to observe and operate, and is very convenient to use. It can be applied to the transformation of small and medium-sized power stations and old power stations, which can greatly improve the reliability and safety of power station protection, and at the same time has positive significance for improving the automation level of power stations.

Main features:

1. High precision, stability and reliability.

2. Centralized control, simple wiring and easy installation.

3. Replace the traditional multi-relay protection mode.

4. It has the functions of over-current, over-voltage and under-excavation pressure.

5. It has the functions of speeding, short circuit and low-speed protection.

6. The protection of the current adopts anti-time control.

7. All parameters are password protected to prevent arbitrary modification.

8. Fault indicator light, buzzer alarm, digital display three-dimensional fault judgment.

9. Scope of application:

All kinds of medium and small high-voltage and low-voltage generator sets.

National Xuzhen - to provide you with the most professional hydropower station complete system solutions!