High voltage switch mechanical characteristic tester

GKC-8 typeHigh voltage switch mechanical characteristic testerThis is based on the design blueprint of "High Voltage AC Circuit Breaker" GB1984-2003 in our factory, referring to the Chinese power industry standard "General Technical Conditions for High Voltage Testing Equipment" Part 3, and DL/T846.3-2004 High Voltage Switch Comprehensive Tester as the design basis. It provides convenience for dynamic analysis of various circuit breakers and can accurately measure the dynamic characteristic parameters of low oil, high oil, vacuum, sulfur hexafluoride and other high voltage circuit breakers of various voltage levels.

GKC-8 typeHigh voltage switch mechanical characteristic testerFunction and Features

1. Large screen LCD display, high-speed thermal printer, using Chinese character prompts for human-machine dialogue operation;

2. Integrated operation power supply, no need for on-site secondary power supply, accurate data, strong anti-interference ability, small size, light weight, beautiful and elegant, more convenient and fast on-site use;

3. The internal anti-interference circuit can meet the reliable use in 500kV substations, and the protection circuit can ensure the safety of equipment and personnel, as well as the stability and accurate testing of instruments;

4. The machine is equipped with a clock circuit that can display the current year, month, day, hour, minute, and second. Even if there is a power outage, it can automatically save the set data and test data;

5. Integrated data management function, managed by station name, equipment, and experiment, equipped with upper computer analysis software;

6. Equipped with waveform recording function, it can display the waveform of the fracture state and the stroke time (S-t) curve corresponding to the time coordinate, which is conducive to accurate judgment of switch mechanism faults;

7. It can test the speed of all switches, equipped with rotation sensors, linear sensors, and sliding resistance sensors, covering almost all types of speed tests;

8. Design a reclosing test function with a switch, and various reclosing tests can be carried out at will;

9. The machine is equipped with a delay protection function, which can automatically cut off the power supply after the circuit breaker is activated, effectively protecting the circuit breaker equipment and high-voltage switch tester;

10. Low voltage test of switch operating mechanism;

11. Applicable to the measurement of mechanical characteristics and operating voltage of all SF6, vacuum, and low oil high-voltage switches at home and abroad;

12. Test channel 7: Simultaneously measure the inherent opening and closing time, synchronicity, and speed of 6 channels of the fracture surface.

13. Standard USB interface for data exchange, each switch can be independently configured with relevant test configurations and stored in a USB drive;

Main technical indicators

3-1 Test items:

(1) Time measurement

(2) Simultaneously measure the inherent opening and closing time and synchronicity of 6 fracture surfaces;

(3) Bounce frequency and bounce time;

(4) Speed and travel measurement

(5) Fast separation speed, fast closing speed, and maximum speed;

(6) Distance, overtravel, and total travel;

(7) Instantaneous speed of opening and closing, and draw the "stroke time (S-t)" curve;

(8) Display the waveform of the fracture state;

(9) Recloser test;

(10) Low voltage test.

3-2 Main technical parameters:

(1) Maximum speed: 20m/s, resolution: 0.01m/s; The test accuracy is: ± 1.0% reading ± 0.05;

(2) Travel test range: 6mm to 1000mm (determined by the length of the sensor);

(3) Maximum travel resolution: 0.1mm; testing accuracy: ± 1.0% reading ± 0.1mm (sliding resistance sensor);

(4) Time testing range: 10ms to 12s;

(5) Time resolution: 0.1ms; Time testing accuracy: ± 0.5% reading ± 0.2ms;

(6) Minimum action synchronization resolution: 0.1ms; testing accuracy: ± 0.5% reading ± 0.1ms;

(7) Test channel 7: 6 channel break times, 1 channel speed;

(8) Power supply: AC220V ± 10%; 50Hz±1Hz；

(9) Operating power output: adjustable voltage from 20V to 250V, current of 20A, digital programmable adjustment.

3-3 Instrument Technical Specifications

Environmental group: Belongs to Group V instruments in GB6587.1-1986 "General Principles for Environmental Testing of Electronic Measuring Instruments"

Type: Portable Packaging: Aluminum Alloy Box

Host size: 400 × 300 × 240 (mm) Weight: 5 (kg)

Working power supply: AC220V ± 10% Frequency: 50Hz ± 5%

Environmental temperature: -10 ° C~40 ° C Relative humidity: ≤ 85%

Insulation resistance: ≤ 2M Ω

Dielectric strength: The power supply incoming line can withstand a withstand voltage test of 1.5kV for one minute on the casing.

Term definition

4-1. Time measurement

(1) Opening (closing) time

The opening (closing) time refers to the time from the moment the switch receives the opening (closing) control signal (coil power on) to the moment when the moving and stationary contacts of the switch are separated (closed) * times.

(2) Same period within the same period

The difference between the maximum and minimum opening and closing times between the same phase fractures.

(3) Interphase synchronization

A. The difference between the maximum closing time of phases B and C is the same period between closing phases, and the difference between the minimum opening time is the same period between opening phases.

(4) Bounce frequency

Bounce frequency refers to the number of times the moving and stationary contacts of a switch separate (close) during the opening (closing) operation.

(5) Bounce time

Bounce time refers to the time from the separation (or closure) of the moving contact and the stationary contact of the switch for * times to the stable separation (or closure) after zui.

4-2. Speed and travel measurement

(1) Just open (just close) speed

The speed of just opening (just closing) refers to the average speed within a certain time or distance when the moving contact of the switch comes into contact with the stationary contact. This tester provides a database of rigid opening (closing) speed definitions for many switches, and selecting a certain type selects the definition of rigid opening (closing) speed. At the same time, the instrument also provides customization functions, suitable for switch types that cannot be listed in the database.

(2) Open distance, overtravel

Open distance refers to the distance from the open state of a switch to the moment when the moving contact comes into contact with the stationary contact. Overtravel refers to the distance from the closed state of a switch to the moment when the moving and stationary contacts are just separated.

(3) Instantaneous speed of opening (closing) switch

The instantaneous speed of opening (closing) refers to the average speed of a small section during the movement of the switch moving contact. The length of this section depends on the resolution of the speed sensor, so the average speed of each section reflects the instantaneous speed of the switch moving contact.

(4) Maximum speed for opening (closing) the switch

The maximum speed of opening (closing) refers to the maximum value of the instantaneous speed of opening (closing). Generally speaking, this value should appear in the section where the switch is just opened or closed, which can be judged from the speed/stroke curve.

(5) Average speed of opening (closing) switch

The average speed of opening (closing) refers to the ratio of the time corresponding to the 10% to 90% travel of the switch moving contact during the opening (closing) process, and the instrument provides custom functions.

(6) Journey time curve

The travel time curve is the travel relationship curve corresponding to each time unit during the movement of the switch moving contact.

5、 Fracture Wiring Instructions

The wiring of the 3rd fracture is shown in Figure 1.

The wiring of the 6th fracture is shown in Figure 2.

Attention: Before connecting the broken wire, first connect the instrument casing to the ground, so that the induced voltage at the broken wire can be released to protect the instrument and personal safety!

Notes:

The internal DC power supply is a short-term operating power supply with a small capacity, and should not be used beyond the parameters specified in the manual.
Before connecting the broken wire, it is necessary to first connect the ground wire so that the internal anti induction high-voltage circuit can be put into operation and avoid damaging the instrument's broken channel.

The external synchronization of the instrument is a live synchronization method, and the external synchronization line is shared with the opening and closing control line.

When using internal and external synchronization, it is necessary to make corresponding selections in the instrument menu to avoid the instrument not receiving synchronization signals.

The completeness of the instrument set

1 host

1 set of supporting testing line and cable package

1 set of sensors (actual configuration may vary depending on different situations)

1 user manual

Several spare fuses and printing paper

1 certificate of conformity and 1 test report each