Circuit breaker characteristic tester

1Circuit breaker characteristic testersummary:

With the development of society, people have increasingly high requirements for the safety and reliability of electricity use,

High voltage circuit breakers play a dual role of control and protection in the power system,

The quality of its performance is directly related to the safe operation of the power system.

Mechanical characteristic parameters are one of the important parameters for judging the performance of circuit breakers.

High voltage switch comprehensive characteristic tester (high voltage switch mechanical characteristic tester)

It is based on the latest "High Voltage AC Circuit Breaker" GB1984-2014 as the design blueprint,

Referring to Part 3 of the General Technical Conditions for High Voltage Testing Equipment in the Electric Power Industry Standard of the People's Republic of China,

DL/T846.3-2017 serves as the design basis, providing convenience for dynamic analysis of various types of circuit breakers,

Can accurately measure the mechanical dynamic characteristics parameters of high-voltage circuit breakers with various voltage levels, such as low oil, high oil, vacuum, and sulfur hexafluoride.

High voltage circuit breakers play a dual role in control and protection in the power system, and their performance directly affects the safe operation of the power system

Mechanical characteristic parameters are one of the important parameters for judging the performance of circuit breakers.

2. Characteristics

Suitable for mechanical characteristic testing of all models of SF6 switches, GIS combination devices, vacuum switches, and oil switches produced domestically and internationally.

Anti interference capability can be easily tested and accurately measured even when the bypass busbar of a 500KV substation is live.

Universal speed sensor (optional), linear travel speed sensor, rotary speed sensor, installation is extremely convenient and simple.

Once the switch is activated, all data and corresponding waveform diagrams of the switch mechanical characteristic test are obtained.

The host can store on-site test data and has a real-time clock for easy archiving and saving of test dates and times.

Host large screen, wide temperature range, direct perspective, background light LCD, full Chinese display of all data and charts, LCD contrast electronic adjustment

Power off memory.

Chinese menu operation, easy to use. The instrument has a built-in printer that can quickly print all data and graphs at any time.

The instrument is equipped with data analysis management software and has a USB interface. The test results can be output to various needle, laser, or inkjet printers to print test reports,

Make on-site experiments computerized.

3、 Definition of Terms

Opening (closing) time: The power on of the opening (closing) wire coil serves as the starting point for timing, until the time when the moving and stationary contacts are just opened (closed).

Same period: The difference between the maximum and minimum opening (closing) times within the same period.

Phase to phase synchronization: The difference between the maximum and minimum opening (closing) times among the three phases.

Average speed: During the opening (closing) process, 10% of the total travel of the moving contact is removed from the front and back respectively,

Take the middle 80% as the ratio of the stroke of the moving contact to the time.

Maximum speed: During the opening (closing) process, after the moving contact starts to move, the moving contact moves every 10ms as a speed unit until the moving contact stops moving,

Obtain several speed unit values, among which the maximum unit speed value is the maximum speed for opening (closing) the switch.

Rigid opening (closing) speed: Depending on the manufacturer of the tested switch and the switch model, each manufacturer has defined different rigid opening and closing speeds,

This tester includes various definition sections for users to choose from.

ABB-HPL550B2: ABB's 550KV SF6 switch;

○ 10ms before and after closing: Partial oil switch and partial SF6 switch;

5ms before and after closing: Partial oil switch;

LW6 type: LW6 SF6 switch;

LW8-35 type: LW8-35 SF6 switch;

○ 10% to fracture: Partial SF6 switches produced by Xi'an Switchgear Factory;

○ Same average speed: Some SF6 switches produced by Shenyang Switchgear Factory;

LW33-126LW33-126 SF6 switch;

10mm before and after closing: Partial 35KV vacuum switch;

○ 6mm before and after closing: Partial 10KV vacuum switch.

If none of the above definitions are adopted, users can use the time travel measured by this tester

Characteristic curve (with directional travel), defining speed sampling segments for rigid opening and closing speeds on the curve,

The instrument automatically calculates the user-defined speed of rigid opening and closing (the ratio of stroke to time within the sampling section)

Please contact our company for specific technical requirements!

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