As we all know, the instrument transformer calibration device is easy to operate, intuitive in reading and rapid in measurement, which can reduce power consumption and labor intensity. What is the instrument transformer calibration device? In fact, the instrument transformer calibration device is a new kind of automatic detection instrument.…

Zc-620 electric energy meter field calibrator is a portable instrument designed and developed by Zhizhuo measurement and control for measurement professionals. It is a precision instrument for field calibration of high-level gateway electric energy meters. It is a classic circuit and high-performance calculation composed of a complete analog circuit, the…

People's perception of temperature is very sensitive. When the temperature is high, people will get hot and cold. In fact, not only people, but also many places are very sensitive to temperature, such as warehouse, machine room, transformer substation, etc. the equipment in such places is relatively "fragile". In order…

In the work of power workers, the transformer comprehensive characteristic test bench is often needed. The test bench has a very wide range of applications, and the price is relatively low, which is very suitable for many power workers. What are the main functions of the transformer comprehensive characteristic test…

What is SF6 gas qualitative leak detector? SF6 gas qualitative leak detector is mainly used for qualitative leak detection of SF6 gas. It has many characteristics, such as small volume, light weight, fast test speed, high precision, and so on. It is well received by the majority of power engineering…

What is the dry test transformer? Dry type test transformer is used to output AC and DC high voltage, provide high voltage equipment for various high voltage tests, and can be used for field detection of insulation performance of various electrical equipment.   The dry-type test transformer is a new…

What is the transformer short circuit impedance tester?   The transformer short-circuit impedance tester can be used to measure the low-voltage short-circuit impedance and test the low-voltage short-circuit impedance. The measurement of low-voltage short-circuit impedance is the basic item in the routine test items. Comparing the short-circuit impedance measured before…

With the development of the times, the use of secondary battery also has some disadvantages, such as less storage energy, short life, series and parallel use problems, use safety, battery power estimation difficulties and so on. The newly developed zco-420 series battery monitoring and management system of our company is…

Many years of operation experience at home and abroad shows that DC voltage withstand test is not suitable for rubber plastic power cable in handover or preventive test, and AC voltage withstand test (frequency range 30-300hz) should be used to ensure the safe movement of cable. This is an epoch-making…

[Abstract]: distributed access and centralized access also play an important role in the wind power well network. In this paper, two kinds of access modes are analyzed effectively, and the influence of wind power access on the relay protection of power grid is studied effectively.   [Key words]: wind power…