GKC-F Circuit Breaker Mechanical Characteristic Tester Overview
Dali Electric recommends
With the development of society, people have increasingly higher 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, 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. The GKC-E High-Voltage Switch Mechanical Characteristic Tester is designed based on the national standard "High-Voltage AC Circuit Breakers" GB1984-2003, and in accordance with the People's Republic of China electric power industry standard "General Technical Conditions for High-Voltage Test Equipment" Part 3, DL/T846.3-2004 High-Voltage Switch Comprehensive Tester. It provides convenience for dynamic analysis of various types of circuit breakers and can accurately measure the mechanical dynamic characteristic parameters of high-voltage circuit breakers of various voltage levels, including low-oil, multi-oil, vacuum, and SF6 types.
GKC-F Circuit Breaker Mechanical Characteristic Tester Functions and Features
2.1 Test Functions
(1) Closing (Opening) Sequence (12) Over-travel
(2) Maximum Closing (Opening) Time (13) Over-travel
(3) Three-phase Non-simultaneity (14) Just-closing (Opening) Speed
(4) Same-phase Non-simultaneity (15) Maximum Speed
(5) Closing (Opening) Time (16) Average Speed
(6) Operating Time (17) Contact Touch Time
(7) Bounce Time (18) No-current Time
(8) Bounce Count (19) Current Waveform Curve (Dynamic)
(9) Bounce Amplitude (20) Time-Travel-Speed Dynamic Curve (ms)
(10) Travel (21) Time-Travel-Speed Dynamic Curve (mm)
(11) Contact Gap
All units are: Time ms, Speed m/s, Distance mm
2.2 Features
(1) Can perform electric and manual operations;
(2) Suitable for mechanical dynamic characteristic testing of various high-voltage circuit breakers within 500KV voltage level;
(3) Can measure actual travel and custom travel;
(4) Can realize single close, single open, close-open, reclose, and re-open operations of circuit breakers;
(5) Convenient wiring, simple operation, only one closing (opening) action is needed to obtain all closing (opening) data, can save up to 50 sets of data, provide later query and upload to computer for permanent storage, and can also view and print all data and motion curves on site;
(6) Uses Chinese prompts and operates in a man-machine dialogue manner;
(7) Accurate data, strong anti-interference, small size, light weight, beautiful and elegant;
(8) Built-in clock circuit can display current year, month, day, hour, minute, second, and can automatically save setting data and test data even after power failure;
(9) Built-in delay protection function, can automatically cut off the action power after the circuit breaker operates, well protecting the circuit breaker equipment and the high-voltage switch tester;
(10) The instrument has a built-in DC power supply, with selectable range: 30-270V/10A, without the voltage drop at the moment of output of conventional rectifier power supplies, which is very suitable for testing the operating voltage of switches.
(11) Can dynamically analyze the relationship between travel and speed of the circuit breaker within each 1ms;
(12) Can be configured with upload software to realize computer archiving, online viewing, and printing.
III. Technical Specifications
Environmental group: Belongs to Group III instruments in GB6587.1-1986 "General Outline of Environmental Tests for Electronic Measuring Instruments".
Type: Portable Packaging: Aluminum alloy case
Dimensions and Weight:
Main unit: 440×300×150(mm) 5 (kg)
Accessories: 440×300×80(mm) 3 (kg)
Working power: AC220V ±10% Frequency: 50Hz ±5%
Ambient temperature: -10°C~40°C Relative humidity: ≤85%
Insulation resistance: ≤2MΩ
Dielectric strength: The power input line to the casing can withstand a 1.5KV 1-minute withstand voltage test.
Time test range: 1~499.9ms Resolution: 0.01ms Accuracy ≤0.1ms
Speed test range: 15m/s Resolution: 0.01m/s Accuracy ±1% of reading + 2 digits
Travel test range: Unlimited Resolution: 0.01mm Accuracy ±1% of reading + 2 digits
DC power supply selection range: 25-265V/10A Resolution: 1V: Accuracy ≤±1%
IV. Terminology Definitions
1. Closing/Opening time:
The time interval from the instant the closing (opening) command is received to the instant when all pole contacts touch (separate).
2. Closing/Opening simultaneity:
The maximum time difference among the contacts of each break when they touch (separate).
3. Bounce time:
The time from the first contact (separation) to the final stable contact (separation) of the moving and stationary contacts during closing (opening) operations.
4. Operating time: (Contact operating time)
The time from the instant the closing (opening) command is received to the instant the contacts just start to move.
5. Bounce count:
The number of times the moving and stationary contacts separate (close) during opening (closing) operations.
6. Bounce amplitude:
The maximum rebound value of the moving contact during its movement.
7. Travel:
The distance from the starting position to any position of the moving contact during opening and closing operations.
8. Contact gap:
The total gap between the contacts of one pole or any connected conductive parts when in the open position.
9. Over-travel:
The distance the moving contact continues to move after the contacts touch during closing operations.
10. Over-travel:
The difference between the maximum travel during the movement of the moving contact and the travel after stabilization during opening and closing operations.
11. Just-closing (opening) speed:
The speed of the moving contact at the instant of contact (separation) with the stationary contact during closing (opening) operations.
12. Average speed: The ratio of the travel to the time during the entire movement of the moving contact in closing (opening) operations.
13. Contact touch time:
In a close-open operation, the time interval from the instant when all pole contacts touch to the instant when all arc contacts separate in the subsequent opening operation.
V. Panel Structure
1. Panel structure (Figure 1)
Note: The above information and technical parameters are compiled and released by Yangzhou Dali Electric Co., Ltd.
