Description-High voltage surge generator
The high-voltage pulse generator fully complies with DL/T846-2016 "General Technical Conditions for High Voltage Test Equipment" and DL/T474-2017 "Guidelines for the Implementation of Field Insulation Tests". It is mainly used for impact discharge and withstand voltage tests in low and high voltage cable fault tests.
This device integrates a DC high voltage source, an energy storage capacitor, a discharge ball device, an automatic discharge device, a cable fault tester sampling module and a coupler into one cart-type high-end experimental instrument. This equipment completely solves the problems of convenience, portability, safety and reliability of traditional experimental devices.
The instrument adopts high-precision, high-stability special high-voltage electronic components and high-frequency high-voltage technology, so that the structure of the whole machine is simple. In order to retain people's original habit of using transformers and operation boxes to generate DC high voltage, this pulse generator adopts humanized design operation mode and integrates miniature and reliable circuit design. It is safe, reliable and visually intuitive. It truly achieves the effect of being unbreakable by impact, and also has the functions of automatic timing impact, manual impact and pressure resistance. It is currently the most user-friendly cart-type DC impact high-voltage equipment in China.
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Features
★ Shock high voltage: 0~36kV Adjustable
★ High voltage divider: Voltage accuracy level 1.5
★ Built-in capacitor: 4μF
★ Output voltage polarity: negative polarity
★ Discharge power: 2550J
★ Impact time: about 7 seconds for automatic impact, and any control time for manual impact
★ Impact power: 2000W
★ Volume: 550L×500W×1000H
★ Weight: not more than 130kg
★ Working power supply: AC 220V±10% 50Hz±2Hz
★ Ambient temperature: -20~+50ºC
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Operation interface introduction
Panel function description
1. Ammeter: Indicates the magnitude of the current on the low-voltage side.
2. Voltmeter: High voltage output voltage indicating kV meter.
3. High voltage lamp (HV): On means there is high voltage output, off means there is no high voltage output.
4. Power light (Power): After turning on the power switch, the light will be on.
5. Zero position light (Zero): Indicates that the pressure regulating knob is in the zero position, and the high pressure can only be started when the zero position light is on.
6. Time setting: set the discharge time interval.
7. Power socket (AC220V): instrument working power supply, AC220V connection port;
8. Fuse socket: where the fuse of the AC220V power supply system is installed;
9. Power switch (NO/OFF): "Gear I"uses AC220V power supply to start the machine, and "Gear 0" turns it off.
10. Single discharge (Single Discharge): When the mode selection key is in single (Single) function, this key is valid.
11. Mode select: It is divided into three modes: withstand voltage (DC), single (Single), and cycle (Cycle). DC is the withstand voltage function. When this function is selected, the cable will be tested for withstand voltage at this time; Single is the manual function. When this function is selected, the voltage will be boosted after the high voltage is started. Press the Single button to manually trigger the impact discharge; Cycle is an automatic function. When this function is selected, the high voltage is started to boost the voltage, and the instrument will automatically trigger the impact discharge for about 5 seconds.
12. Start button (Start): In the zero position state, press the start button, and the high voltage starts at this time, and the high voltage light is on. In the non-zero state, the start high pressure light is off.
13. Stop button (Stop): When the test is completed or an abnormality occurs, press this button to cut off the high voltage output, and at this time, the remaining high voltage of the test will be automatically discharged.
14. Voltage control knob (Voltage control): When this knob is in the zero position, the zero position light is on, and the high voltage can be started. After the high voltage is started, the pressure can be boosted through the pressure regulating knob.
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Side panel description
1. Safety ground (Safety GND): The ground wire must be used when working to ensure the safe use of the equipment.
2. High voltage ground (HV GND): It must be connected to the root of the ground wire of the cable to ensure good grounding.
3. Sampling ground (Sampling GND): Connect to the root of the ground wire of the cable under test. It can be connected to the root of the cable together with the high-voltage ground. It is used for waveform sampling under flash-over conditions. It must be well grounded when in use.
4. Signal ground (Signal GND): When using the multi-pulse method, it needs to be connected (the ground wire of the multi-pulse coupler).
5. High-voltage flash-over output (HV Flash OUT): dedicated DC high-voltage output terminal.
7. Multiple Pulse (Multiple Pulse): (Input Input Output Output): When using the multiple pulse method, the high-voltage flash-over output terminal and the multiple pulse input terminal are short-circuited with a high-voltage wire (as shown in the figure above), and the high-voltage output wire is connected to the On the multi-pulse output terminal.
8. High-voltage flashover signal (HV Flash Signal): Use double Q lines to connect the machine and the cable fault tester to collect waveforms for flash-over, which is only valid during high-voltage flash-over.
9. Multiple Pulse Signal: Use double Q lines to connect the machine and the cable fault tester for flash-over acquisition of waveforms, only valid for multiple pulses.
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Technical Parameters
| Shock high voltage |
0~36kV adjustable |
| High voltage divider |
Voltage accuracy level 1.5 |
| Built-in capacitor |
4μF |
| Output voltage polarity |
negative polarity |
| Discharge power |
2550J |
| Impact time |
about 7 seconds for automatic impact, and any control time for manual impact |
| Impact power |
2000W |
| Volume |
550L×500W×1000H (mm) |
| Weight |
not more than 130kg |
| Working power supply |
AC 220V±10% 50Hz±2Hz |
| Ambient temperature |
-20~+50ºC |
Cable fault test site
Wiring diagram
Step
1. Turn on the AC 220V power supply;
2. Turn on the power switch. At this time, the power indicator light is on and the internal fan starts. Observe whether the zero position light is on. If it is not on, turn the pressure regulating knob counterclockwise to zero position;
3. Select the correct mode selection button. Generally, when testing cable faults, select the cycle mode, and you can hear the working sound of the internal motor at this moment; select the single mode, and you can trigger a single manual key at any time interval; for example, when doing a cable withstand voltage test , select the DC mode DC, the system will automatically switch to the withstand voltage mode, please slowly increase the voltage when doing the withstand voltage test. Press the start button, then the high voltage has been started, and the red high voltage light is on.
4. Start to increase the voltage, turn the voltage regulating knob, and slowly increase the voltage until the fault point breaks through and discharges. The voltmeter and ammeter discharge, and the pointer swings.
5. Connect to the host for waveform sampling and waveform analysis.
6. After the experiment is over, first adjust the voltage adjustment knob counterclockwise to the zero position, lower the voltage, and then press the stop button. Before pressing the stop voltage, it is best to lower the voltage, which is beneficial to protect the self-discharge device of the system. In an emergency, you can directly press the stop key first, and then adjust the voltage knob to zero.
7. After the high voltage is stopped, for the sake of personal safety, before disconnecting the wires, use a discharge rod to perform arc discharge on the cable, and then perform short-circuit discharge on the cable.
10kV DC withstand voltage operation example:
1. Check the site to ensure that all safety distances and safety measures meet the requirements.
2. High-voltage pulse generator safety ground (Safety GND), high-voltage ground (HV GND), sampling ground (Sampling GND), and discharge rods are respectively connected to the reliable ground row and fully grounded.
3. Confirm that the on-site installation is in good condition and the wiring is correct and good.
4. Connect the high-voltage output line of the instrument to the terminal of the tested product.
5. Connect the AC220V power supply and turn on the power switch.
6. Mode select (Mode selete) select the DC gear.
7. Observe whether the power indicator light (Power) and the zero position indicator light (Zero) are on. When the light is normal, press the start button (Start), and the high voltage indicator light (HV) is on.
8. Slowly adjust the voltage regulating knob (Voltage control) clockwise, and the ammeter (Ammeter) and voltmeter (Voltmeter) will display the voltage and current. When a certain voltage is raised, the zero indicator light (Zero) goes out.
9. Slowly increase the voltage to DC10kV. At this time, the DC withstand voltage test is being performed on the tested product. Observe the swing of the voltmeter (Voltmeter) and the ammeter (Ammeter) to reflect whether there is leakage or breakdown.
10. After the test is over, turn the voltage control knob (Voltage control) counterclockwise until it reaches the end, and the zero indicator light (Zero) lights up. (Observe the voltage indication of the voltmeter to prevent the wrong direction of rotation from causing accidents).
11. Press the stop button (Stop), and observe whether the voltage displayed on the voltmeter (Voltmeter) drops from 10kV to 0kV. Then use the discharge rod to connect the ground wire to fully discharge the tested terminal, and then short-circuit the high-voltage output and the ground to ensure sufficient discharge.
12. The instrument is turned off, all wirings are removed and arranged, and the test is completed.
20kV cycle impulse discharge operation example:
1. Check the site to ensure that all safety distances and safety measures meet the requirements.
2. High-voltage pulse generator safety ground (Safety GND), high-voltage ground (HV GND), sampling ground (Sampling GND) are respectively connected to the reliable row and fully grounded.
3. Confirm that the on-site installation is in good condition and the wiring is correct and good.
4. Connect the high-voltage output line of the instrument to the terminal of the tested product.
5. Connect the AC220V power supply and turn on the power switch.
6. Mode select (Mode selete) select the Cycle gear in the cycle.
7. Adjust the time setting. The left half of the time is the setting of the ball's pull-in time, and the right half is the setting of the disconnection time. Usually we set the time as 0 5 (0.01S) 0 6 (S), which is interpreted as 6S when two balls collide and discharge once. The duration of one contact is 0.05s.
8. After setting the time, observe whether the power indicator (Power) and the zero indicator (Zero) are on. When the lights are normal, press the start button (Start), and the high voltage indicator (HV) is on.
9. Slowly adjust the voltage regulating knob (Voltage control) clockwise, and the ammeter (Ammeter) and voltmeter (Voltmeter) will display the voltage and current. When a certain voltage is raised, the zero indicator light (Zero) goes out.
10. Slowly increase the voltage to DC20kV. At this time, a periodic impulse discharge test is performed on the tested product. Observe that the voltmeter (Voltmeter) and the ammeter (Ammeter) swing to react violently, and the discharge of the voltmeter drops from 20kV to 0kV instantly. The ammeter increases instantaneously. If the swing is as above, the breakdown discharge is sufficient.
11. Connect the cable fault tester to conduct a high-voltage flashover sampling test to roughly measure the fault distance.
12. Use the cable fault locating instrument to accurately locate the acousto-magnetic fault along the line.
13. After the test is over, turn the voltage control knob (Voltage control) counterclockwise until it reaches the end, and the zero indicator light (Zero) lights up. (Observe the voltage indication of the voltmeter to prevent the wrong direction of rotation from causing accidents).
14. Press the stop button (Stop), and observe whether the voltage displayed on the voltmeter (Voltmeter) drops from 20kV to 0kV. Then use the discharge rod to connect the ground wire to fully discharge the tested terminal, and then short-circuit the high-voltage output and the ground to ensure sufficient discharge.
15. The instrument is turned off, all wirings are removed and arranged, and the test is completed.
20kV single discharge operation example:
1. Check the site to ensure that all safety distances and safety measures meet the requirements.
2. High-voltage pulse generator safety ground (Safety GND), high-voltage ground (HV GND), sampling ground (Sampling GND) are respectively connected to the reliable row and fully grounded.
3. Confirm that the on-site installation is in good condition and the wiring is correct and good.
4. Connect the high-voltage output line of the instrument to the terminal of the tested product.
5. Connect the AC220V power supply and turn on the power switch.
6. Mode select (Mode selete) select the Single gear.
7. Observe whether the power indicator light (Power) and the zero position indicator light (Zero) are on. When the light is normal, press the start button (Start), and the high voltage indicator light (HV) is on.
8. Slowly adjust the voltage regulating knob (Voltage control) clockwise, and the ammeter (Ammeter) and voltmeter (Voltmeter) will display the voltage and current. When a certain voltage is raised, the zero indicator light (Zero) goes out.
9. Slowly increase the voltage to DC20kV, press the single button (Single) to execute the discharge action once, when the discharge action is required, press the single button (Single), observe the swing of the voltmeter (Voltmeter) and the ammeter (Ammeter) to react violently, And the voltmeter discharges from 20kV down to 0kV instantly. The ammeter increases instantaneously. If the swing is as above, the breakdown discharge is sufficient.
10. Connect the cable fault tester to conduct a high-voltage flashover sampling test to roughly measure the fault distance.
11. Use the cable fault locating instrument to accurately locate the acousto-magnetic fault along the line.
12. After the test is over, turn the voltage control knob (Voltage control) counterclockwise until it reaches the end, and the zero indicator light (Zero) lights up. (Observe the voltage indication of the voltmeter to prevent the wrong direction of rotation from causing accidents).
13. Press the stop button (Stop), and observe whether the voltage displayed on the voltmeter (Voltmeter) drops from 20kV to 0kV. Then use the discharge rod to connect the ground wire to fully discharge the tested terminal, and then short-circuit the high-voltage output and the ground to ensure sufficient discharge.
14. The instrument is turned off, all wirings are removed and arranged, and the test is completed.
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Description
Detailed operation videos help you get started easily
The cable fault tester adopts an industrial-grade 12.1-inch touch-integrated computer and a simple operating software interface to realize human-computer interaction testing. Using industrial-grade integrated circuits and devices, built-in high-capacity lithium-ion battery, stable and reliable, easy to use.
This cable fault tester is a special instrument for measuring and analyzing the status and fault distance of power cables. This cable fault tester adopts modern electronic technology and computer technology to realize signal filtering, collection, data processing, graphic display, and graphic analysis. Cable speed measurement, cable length test, cable fault distance test.
This cable fault tester is suitable for low-resistance, short-circuit, open-circuit and disconnection faults, as well as high-resistance leakage and high-resistance flashover of power cables, high-frequency coaxial cables, street lamp cables, and buried wires of various materials with different cross-sections and media. Network failure. The technical parameters comply with "GB/T 18268.1 Anti-interference Requirements for Test Equipment Used in Industrial Sites", "DL/T 849.1-2019 General Technical Conditions for Special Testers for Power Equipment Part 1: Cable Fault Flash Tester", "JJF1042-2020 Cable Fault Tester Calibration Specifications" standard requirements.
Features
• 12.1-inch industrial computer control, touch operation mode;
• XP operating system, convenient operation mode;
• Possess the functions of measuring wave velocity and fault distance;
• Automatic continuous sampling, timely and accurate waveform capture;
• The instrument adopts the latest technology of embedded industrial computer, and also has the impact high-voltage flashover method and low-voltage pulse method;
• With user-friendly software and full English menu and screen touch button operation. button definition
Simple and clear. The measurement method is simple and fast;
• The success rate of fault detection, test accuracy and test convenience are superior to any domestic testing equipment;
• Ultra-high brightness, super-large LCD screen as a display terminal, which can be clearly observed in an environment exposed to direct sunlight
screen waveform. The instrument has powerful data processing capability and friendly display interface;
• Massive test waveform storage function: the waveforms tested on site can be conveniently stored in the instrument according to the specified order, and can be recalled and observed at any time;
• With standard printer USB interface;
• Simple operation and high reliability. High cost performance;
• Built-in polymer lithium battery power supply, can test cable open circuit and low-resistance short circuit faults in the environment without power supply.
The figure above shows the cable fault distance measured by the high-voltage flashover method ICE (ARC single-shot) test method.
Operation interface introduction
1 Display: 12.1-inch industrial touch screen;
2 Communication: low-voltage pulse method pulse signal output interface, high-voltage flashover method sampler receiving signal input interface;
3 Ground: safety ground terminal;
4 Power indicator: Indicates the internal battery power, displayed in 4 grids;
5 USB-1: external wireless network card and USB communication equipment;
6 USB-2: external wireless network card and USB communication equipment;
7 Power switch: "I" gear, use AC 220V power supply to power the system;
"II" gear, using the internal battery to power the system; when the "power socket" is connected to the AC 220V power supply, the battery is also charged at the same time;
"O" gear, turn off the system power;
8 Power socket: instrument working power supply, AC 220V connection port;
9 Fuse tube: where the fuse tube of the AC 220V power supply system is installed;
10 Self-inspection: the lower computer transmits a signal;
11 On/Off: Turn on and off the working power of the industrial computer;
12 Amplitude: When collecting waveforms, adjust the amplitude knob to change the amplitude of the collected waveforms;
13 Indicator light: indicator light reflecting the inspection method;
14 Shift: Adjust the shift knob when collecting waveforms to change the baseline height of the collected waveforms;
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Use High voltage flash-over test method(see below picture)
Use low voltage pulse method to measure cable length/open circuit fault distance(see below picture)
Testing under ARC(multi-shot) test mode(see below picture)
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Packing list
| Item |
Name |
specification |
Qty. |
| 1 |
High voltage surge generator |
|
1set |
| 2 |
Cable fault tester |
|
|
| 3 |
Power cable |
3*0.75/1.8m |
1pcs |
| 4 |
sampler |
/ |
1pcs |
| 5 |
High voltage output cable |
30m |
1pcs |
| 6 |
Ground wire |
30m |
1set |
| 7 |
Discharge rod |
50kV |
1pcs |
| 8 |
Fuse |
8A |
4pcs |
| 9 |
High voltage short wiring |
High voltage plug at both ends |
1pcs |
| 10 |
Power cable |
30m |
1pcs |
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Application
Audited Supplier 
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