High voltage switch tester

IIGKC-8 High Voltage Switch TesterFeatures and Characteristics
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;
3、 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) Resolution of small action synchronization difference: 0.1ms; Test 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.

4、 Definition of Terms
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) Open (close) the switch at maximum speed
The maximum speed of opening (closing) the switch refers to the maximum value of the instantaneous speed of opening (closing) the switch. 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!


6、 Instructions for selecting and installing sensors
6-1. Types of sensors:
This tester has the function of comprehensively testing the dynamic characteristics of low oil switches, SF6 switches, and vacuum switches. It is equipped with corresponding speed sensors according to the different structural characteristics of various switches, including linear displacement sensors, angular velocity sensors, and sliding resistance sensors.
6-2. Sensor Introduction:
(1) Linear displacement sensor
The appearance of the linear displacement sensor is shown in Figure 3.

Figure 3


The external dimensions are: 32mm * 32mm * 32mm. Small in size and light in weight, it can be easily tied (using insulating tape is sufficient) onto linear motion mechanisms.

The characteristics are as follows:
The sensor does not require any support, making it easy to install on site;
Suitable for testing in any situation where the on-site switch mechanism is in linear motion;
Small size, light weight, easy installation, without worrying about affecting the movement speed of the operating mechanism.

(2) Angular velocity sensor
The appearance of the angular velocity sensor is shown in Figure 4.



Figure 4

The angular velocity sensor adopts the grating principle to directly test the relationship between the rotation angle and time, and then automatically calculates the proportional coefficient based on the input reference distance or total stroke, and finally converts it into the actual speed and stroke.

The characteristics are as follows:
The sensor is lightweight, with a strong magnet in contact with the rotating part of the switch. The support frame is fixed with a universal strong magnetic force, making it easy to install on site;
It can identify forward and reverse rotation, which is beneficial for determining the overshoot stroke of the switch.
Suitable for testing speed in situations where the on-site switch mechanism has rotating parts and the angle is linearly related to linear motion.
(3) Sliding resistance sensor
The appearance of the sliding resistance sensor is shown in Figure 5.



Figure 5

Randomly equipped with sliding resistance sensors with lengths of 28mm and 410mm respectively. The 28mm sliding wire resistance sensor is mainly used for stroke and speed testing of vacuum switches, with a testing stroke<18mm; the 410mm sliding wire resistance sensor is mainly used for stroke and speed testing of SF6, with a testing stroke<350mm. When used for testing low oil switches at 110kV and 220kV, due to the long stroke and inconvenient installation directly on the moving contact, it can only be indirectly measured on the transmission rod.


6-3. Applicability description of various sensors:
Generally speaking, switches for linear motion can use linear displacement sensors or sliding resistance sensors;
Switches without exposed linear motion parts can use angular velocity sensors.
When installing sensors, try to install them on the moving mechanism closest to the moving contact as much as possible to avoid gaps or non-linearity in the intermediate conversion part that may affect the accuracy of the test.
The speed and stroke testing accuracy of the sliding resistance sensor is the highest and most reliable.
It is recommended to use sliding resistance sensors as much as possible. Other lengths of sliding wire resistance sensors are not standard configurations, and the instrument software supports sliding wire resistance sensors of any length.
(The above information is for reference only. The actual configuration depends on the specific situation. If there are any changes, we will not notify you. Thank you for your understanding.)

7、 Instructions for Switching Output Wiring and External Synchronization Wiring
During the experiment, connect the wires according to Figure 6.
During on-site testing, if the internal power supply of the instrument is used, the "internal synchronization mode" should be selected, and the closing control line (red), opening control line (green), and common line (black) should be connected to the "opening and closing control" port (aviation plug) on the instrument panel. When wiring, pay attention to cutting off the operating power supply of the high-voltage switchgear (disconnect the knife or unplug the fuse) to avoid conflicts between the two power sources.
If an external power supply is used for the instrument, the "external synchronization mode" should be selected, and the closing control line (red), opening control line (green), and common line (black) should be connected to the "external synchronization" port (aviation plug) on the instrument panel.
The above two ports are opposite to each other and use one cable. One method only connects one channel and cannot connect both at the same time.



8、 Explanation of Speed Definition
8-1. Several basic speed definition methods provided by the instrument:
The average speed of # # mm (ms) immediately after opening is the opening speed, and the average speed of # # mm (ms) immediately before closing is the closing speed. You can choose to define by time or distance.
The average speed of # # mm (ms) before and after the initial opening is called the opening speed, and the average speed of # # mm (ms) before and after the initial closing is called the closing speed. You can choose to define by time or distance.
3. The average speed of # # mm immediately after opening is the opening speed, and the average speed from the beginning of the closing motion to the moment of closing is the closing speed.
4. Use two time parameters, t1 and t2, to describe the opening speed, and the time from the moment of closing to the end of closing (t3) to describe the closing speed.
5. Definition of average speed.
6. The average speed from the starting point to the # #% stroke is the opening speed, and the average speed from the # #% stroke to the starting point is the closing speed. (The travel of the opening position is 0, and the travel of the closing position is 100%)
Users can define a specific proprietary switch test parameter definition according to the above basic definition method, name it, and add it to the database. In the future, when conducting experiments, as long as the project in this database is selected, all parameter definitions can be retrieved.

The following is the database added by the manufacturer in advance according to the above method when the instrument leaves the factory, which can be modified or added.

8-2. Several commonly used speed definitions in databases:
1. Oil switch I
Opening speed: The average speed of the moving and stationary contacts 10 ms after they are just opened.
Closing speed: the average speed of the dynamic and static contacts just closing in * ms.
The switches suitable for this definition are:
SN10-10Ⅰ,Ⅱ,Ⅲ
SN10-35
SW2-35Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ
SW4-110Ⅱ,Ⅲ
SW4-220Ⅱ,Ⅲ
DW8-35，Ⅱ
LW2-220
2. Oil switch II
Opening speed: The average speed of 5ms before and after the opening of the moving and stationary contacts.
Closing speed: the average speed of 5ms before and after the dynamic and static contacts are just closed.
The switches suitable for this definition are:
SW2-110Ⅰ,Ⅱ,Ⅲ
SW2-220Ⅰ,Ⅱ,Ⅲ,Ⅳ
SW3-110
SW3-110G
SW6-110Ⅰ,Ⅱ
SW6-220Ⅰ
SW6-330Ⅰ
DW2-35，Ⅰ，Ⅱ，R
DW1-35
DW1-35D（G）

3. Oil switch III
Opening speed: The average speed of 10ms before and after the opening of the moving and stationary contacts.
Closing speed: the average speed of 10ms before and after the dynamic and static contacts are just closed.
The switches suitable for this definition are:
SW7-110，110Z
SW7-220

4. Vacuum switch 10kV I
Opening speed: The average speed of 6mm after the dynamic and static contacts are just opened.
Closing speed: The average speed of 6mm before the dynamic and static contacts are just closed.
The switches suitable for this definition are:
ZN12-10
ZN51-10

5. Vacuum switch 10kV II
Opening speed: The average speed of 6mm after the dynamic and static contacts are just opened.
Closing speed: The average speed from the beginning of the closing motion to the point of just closing.
The switches suitable for this definition are:
ZN3-10 ， ZN47-10，
ZN13-10 ， ZN54-10，
ZN14-10 ， ZN60-12，
ZN20-10 ， ZN63-12，
ZN21-10 ， ZN65-12，
ZN22-10 ， ZN66-10，
ZN23-10 ， ZN67-10，
ZN33-10 ， ZW8-12，
ZN37-10 ， ZN38-10，
ZN28-10。

6. Vacuum switch 35kV
Opening speed: the average speed of 12mm after the dynamic and static contacts are just opened.
Closing speed: the average speed of 12mm before the dynamic and static contacts are just closed.
The switches suitable for this definition are:
ZN12-35

7. LW8-35 SF6 switch
Opening speed: The average speed of 32mm immediately after the opening of the moving and stationary contacts.
Closing speed: The average speed of 16mm before the dynamic and static contacts are just closed.
The switches suitable for this definition are:
LW8-35

8. LW6 SF6 switch
Opening speed: The average speed of 72mm immediately after the opening of the moving and stationary contacts.
Closing speed: The average speed of 36mm before the dynamic and static contacts are just closed.
The switches suitable for this definition are:
LW6-500
LW6-220
LW6-132
LW6-110Ⅰ,110Ⅱ
LW6-63Ⅰ,63Ⅱ

9. LW7 SF6 switch
Opening speed: The average speed of 120mm after the dynamic and static contacts are just opened.
Closing speed: the average speed of 120mm before the dynamic and static contacts are just closed.
The switches suitable for this definition are:
LW7-220

10. Pingdingshan Switchgear Factory LW7 SF6 Switch
Just scored indicators:
T1: The difference between the moment of initial movement and the moment of initial disconnection during the opening process of the moving contact.
T2: The difference between the moment when the moving contact is just opened and the moment when it moves to the 120mm position after being moved.
Rigid indicators:
T3: The difference between the moment of initial closure and the moment of termination of closure.

11. SF6 switch of Xi'an Switchgear Factory
Opening speed: The average speed of the trip from the moment of opening to 10% of the trip.
Closing speed: The average speed of the 10% stroke to the point of just closing.

12. Definition of Same Average Speed
Opening speed: The average speed of the moving contact during the opening process from 10% stroke to 90% stroke.
Closing speed: The average speed of the moving contact during the closing process, ranging from 10% to 90% of its travel.
The switches suitable for this definition are:
LW11-63
LW11-110
LW11-220

(The above information is for reference only. During the experiment, the settings and selections were made according to the high-voltage switch factory manual.)




9GKC-8 typeOperation Manual
1. Panel structure



2. Operating instructions
The instrument adopts a large screen color LCD display. After turning on, the interface shown in Figure 1 is displayed



There are three types of tests to choose from: conventional test, reclosing test, and low voltage test. By default, it is a routine test. After pressing the "Confirm" button on the panel, you will enter the routine test interface, as shown in Figure 2.



The upper part of the screen displays partial experimental setup information and time display.

The real-time status of the fracture is displayed at the bottom left of the screen.

The cursor is displayed by default on 'Test'.

By using the left and right arrow keys on the panel, you can move the cursor to "Settings" or "Recalculate".

After entering "Settings", the interface will display as shown in Figure 3.


At this point, the default modified configuration is speed definition. You can use the up arrow "↑" or down arrow "↓" on the keyboard to select the configuration that needs to be modified. The currently modifiable configuration will immediately turn into a black and white inverted cursor display, and then use the left arrow "←" or right arrow "→" to change the selected configuration value. After all modifications are completed, press the "Exit" button on the keyboard to complete the modification successfully. After returning, the cursor will stop at "Test". Press the "confirm" button on the keyboard to perform the switch test according to the previous test configuration. At this point, the interface is shown in Figure 4.


Obviously, the current fracture state is closed, so what needs to be displayed is "starting to open". After completing the opening test, a closing test is required, and the interface is shown in Figure 5.

In this way, a trial of opening and closing has been completed, and the interface is shown in Figure 6:



The fracture waveform, S-t curve, and various test results will be displayed on the above interface.
If you press the right arrow "→" or the left arrow "←", you can also see more experimental data, such as intra phase synchronization, inter phase synchronization, etc. If you press the down arrow "↓" or up arrow "↑", you can choose to observe the opening data or print the entire test data. For example, by moving the cursor to the "print" position and pressing the "confirm" button, the printer will print out the data from this experiment.
For the reclosing test and low voltage test, the operation method is similar to the conventional test, and will not be repeated here.
If you want to analyze experimental data on a desktop computer, you can insert a USB flash drive into the USB port during the experiment. After completing the experiment, press' Save '. Note that some inferior USB flash drive instruments may not be recognized, therefore, use the USB flash drive model configured by the manufacturer.
After pressing the "Function" button on the panel and confirming, it can be used to open the test data previously saved to the USB drive. Select the 'Clock' option to adjust the instrument clock.

10、 Attention:
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.
11、 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