The KDGK-6A circuit breaker characteristic parameter tester can accurately measure the mechanical dynamic characteristic parameters of high-voltage circuit breakers with various voltage levels, such as low oil, high oil, vacuum, and sulfur hexafluoride. 

1. 7-inch color large screen, Windows operating system, user-friendly interface, intuitive interface, touch sensitive buttons, easy for on-site operators to use.
2. High speed thermal printer, convenient for on-site printing of test data.
3. Integrated operation power supply inside the machine, no need for on-site secondary power supply, convenient and fast on-site use. Can provide adjustable power supply of DC20-265V with a current of 15A. It can set the operating voltage values of the opening and closing coils, and can also perform low voltage operation tests on circuit breakers.
4. Equipped with linear sensors, rotation sensors, universal sensors, brackets, and dedicated fixed multifunctional joints, easy and simple to install.
5. Suitable for most models of SF6 switches, GIS combination devices, vacuum switches, and oil switches produced domestically and internationally.
6. Activate the switch once to obtain most of the data and graphics.
7. The host can store 6000 sets of current test data (expandable memory card), with a real-time clock inside for easy archiving.
8. Equipped with a USB interface, data can be directly saved to a USB drive and uploaded to a computer for analysis and storage.
9. At the same time, it can measure the fracture of 12 metal contacts and the closing resistance of six circuits.
10. Containing envelope lines, generate standard envelope lines based on the values tested by multiple (2-10) switches for comparison.
11. The internal anti-interference circuit can meet the reliable use in a 500KV substation.
 

(1) Maximum speed: 20m/s, resolution: 0.01m/s; The test accuracy is: ± 1.0% reading ± 0.05;
(2) Travel test range: 6mm to 280mm (optional up to 6-700mm);
(3) Minimum travel resolution: 0.1mm; Test accuracy: ± 1.0% reading ± 0.1mm;
(4) Time testing range: 10ms to 15s,
(5) Time resolution: 0.1ms; The accuracy of time testing is: ± 0.5% reading ± 0.2ms;
(6) Minimum action synchronization resolution: 0.1ms; The test accuracy is: ± 0.5% reading ± 0.1ms;
(7) Test channel 8: 6 channels for fracture time, 1 channel for speed, and 1 channel for coil current;
(8) Power supply: AC220V ± 10%; 50Hz±1Hz;
(9) Operation power output: voltage adjustable from DC30V to 300V (optional to DC14V to 250V), current 20A, digital programmable adjustment, continuous working time of 3s;

2. Routine experimental testing
(1) Time measurement
Opening (closing) time: Opening (closing) time refers to the time from the switch receiving the opening (closing) control signal (coil power on) to the first separation (closing) of the switch's moving and stationary contacts.
Same period within the same phase: the difference between the maximum and minimum opening and closing times between the same phase fracture surfaces.
Phase to phase synchronization: A, B, and C phases, the maximum difference in closing time between each phase is the closing phase to phase synchronization, and the minimum difference in opening time is the opening phase to phase synchronization.
Bounce frequency: Bounce frequency refers to the number of times the switch's moving and stationary contacts separate (close) during the opening (closing) operation.
Bounce time: Bounce time refers to the time from the first separation (or closure) of the moving and stationary contacts of a switch to the final stable separation (or closure).
Fracture curve: The fracture is in the state of opening and closing, and a "opening and closing state time" curve is drawn;
(2) Speed and travel measurement
Rigid opening (closing) speed: Rigid opening (closing) speed refers to the average speed within a specified time or distance when the moving contact of the switch comes into contact with the stationary contact. This tester provides many ways to define the rigid opening (closing) speed of switches.
Open distance and 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; The itinerary refers to the length of the sum of the distance between the opening distance and the overtravel.
Overshoot amplitude and rebound amplitude: Overshoot amplitude refers to the distance that the switch continues to move after exceeding the total stroke from the open state; The rebound amplitude refers to the distance that the switch continues to move beyond the total stroke after starting from the closed state.
Maximum speed of opening (closing): 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.
Average speed of opening (closing): The average speed of opening (closing) refers to the average speed of the travel segment between two percentages defined by the average speed during the opening (closing) process of the switch moving contact.
Travel time curve: The travel time curve is the travel relationship curve corresponding to each time unit during the movement of the switch moving contact.
(3) Measurement of current in the closing (opening) switch coil
When in internal synchronization mode, the current passing through the closing (opening) coil can be tested and a current time (I-t) curve can be plotted.

3. Recloser test
(1) Combination and division test
Closing time: Closing time refers to the time from the switch receiving the closing control signal (coil power on) to the first closing of the switch's moving and stationary contacts.
Closing and opening time: Closing and opening time refers to the time from the moment the switch is closed to the first separation of the moving and stationary contacts of the switch.
(2) Splitting and merging test
Opening time: Opening time refers to the time from the switch receiving the opening control signal (coil power on) to the first separation of the switch's moving and stationary contacts.
Opening and closing time: The opening and closing time refers to the time from the moment the switch is opened to the first time the moving and stationary contacts of the switch are closed.
(3) Split test
Opening time: Opening time refers to the time from the switch receiving the opening control signal (coil power on) to the first separation of the switch's moving and stationary contacts.
Opening and closing time: The opening and closing time refers to the time from the moment the switch is opened to the first time the moving and stationary contacts of the switch are closed.
Closing and opening time: Closing and opening time refers to the time from the moment when the switch is just closed to the moment when the moving and stationary contacts of the switch are separated again.

4. Low voltage test
(1) Automatic test: output the starting voltage of the switch to the closing (opening) coil to verify the closing (opening) action voltage of the switch; If the switch does not act, gradually increase the voltage according to the step value of the boost until the switch acts, and finally check the action voltage of the switch closing (opening).
(2) Rated voltage percentage test: Output the voltage based on the percentage of rated voltage to the closing (opening) circuit coil to verify the closing (opening) action voltage of the switch.