Large voltage surge generator

NegotiableUpdate on 02/11

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

A large voltage surge generator is used for conducting standard lightning impulse voltage full wave and cutoff tests on power transformers, outdoor circuit breakers, transformers, reactors, lightning rods, switches, bushings, insulators, and other test samples with voltage levels below 35kV.

Product Details

Large voltage surge generatormain components

1DC charging section

1）Adopting bilateral asymmetric thyristor constant current charging method, rated output voltage ±100kV；

2）Adopting bilateral asymmetric thyristor constant current charging method, rated output current30mA；

3）Adopting insulated cylinder oil immersed charging transformer, the transformer has good sealing and no oil leakage;

4）adopt2DL－200kV/200mAHigh voltage rectifier silicon stack;

5）The high-voltage rectifier silicon stack protection resistor adopts enameled resistance wire wound tightly around the insulation tube with inductance;

6）Constant current charging device10%～100%Within the rated charging voltage range, the deviation between the actual charging voltage and the set voltage shall not exceed±1%The instability of charging voltage is not greater than±1%The adjustable accuracy of the charging voltage is1%；

7）The DC resistor voltage divider adopts100kV，200MΩ oil immersed metal film resistor, with the low-voltage arm resistor installed inside the bottom flange of the voltage divider;

8）The automatic grounding switch adopts a steel strip grounding mechanism, which can automatically short-circuit the main capacitor to ground through a protective resistor when the test is stopped.

9）The positive and negative polarities of the DC charging device are automatically switched;

10） The device for constant current charging, charging transformer, high-voltage rectifier silicon stack, voltage doubling capacitor, resistance divider, current limiting resistor, lower computer, and main body are installed on the same mobile chassis.

2Main body part

1)The main structural form adopts a Swiss imitationHaefelycompanyGType structure, closed discharge system,HighvoitGrounding devices for technology;

2)Rated voltage of each level of the body±100kV；

3)Each level of the ontology includes1TaiwanMWF50kV/1.0MF×2Iron shell oil immersed pulse capacitors, wave head resistors, wave tail resistors, and ignition ball gaps, etc. When lightning waves are generated, appropriate lightning wave head resistors, wave tail resistors, and stages are selected based on the capacitance of the test sample.

4)Both the wave head resistor and the wave tail resistor adopt a plate-shaped structure, with no inductive winding. The wave head resistor and the wave tail resistor can be interchanged;

5)The connectors are all spring compression type, which is convenient for plugging and unplugging during wave adjustment and has reliable contact;

6)The wave head and wave tail resistor bracket can be used in parallel with multiple resistors simultaneously;

7)The first stage ball gap is triggered by a single-sided synchronous ignition pulse device, and the second to third stage ball gaps are all ignited by elliptical ball gaps. The synchronous misoperation rate or refusal rate is not greater than2%.

8)The distance between each level of ball gap is adjusted in a straight line driven by an electric motor. The device has low noise, no inertia in positioning, accurate and fast, and the discharge voltage corresponding to the ball distance is controlled and displayed;

9)The body pillar is made of epoxy resin wire, and the part with the highest potential adopts anti-aging and corona measures;

10)300kVThe dimensions of the impulse voltage generator body are approximately: length x width x height:2m×2m×2.2mThe entire body has a movable wheel frame for easy movement;

Large voltage surge generatoruse:

Confirm power supply: Before using the impulse voltage generator, it is necessary to confirm that the power supply of the equipment is normal and connect it to an appropriate power outlet.

Training for operators: Personnel operating impulse voltage generators need to undergo professional training to understand the working principles, operating methods, and safety precautions of the equipment.

Safe operation: When operating the impulse voltage generator, it is necessary to wear insulated gloves and shoes, and ensure that hands do not touch the inside of the equipment.

Correct wiring: The wiring of the impulse voltage generator must be correct, otherwise it may affect the test results or damage the equipment. When wiring, it is necessary to carefully read the equipment manual and follow the wiring diagram on the manual for wiring.

Avoid electric shock: During operation, do not put your hands inside the device to prevent electric shock. At the same time, it is necessary to ensure that the equipment is grounded to prevent the occurrence of electric shock accidents.

Avoid overload: Do not use the impulse voltage generator beyond its rated voltage or current to prevent equipment overload damage.

Wear protective equipment: During operation, it is necessary to wear appropriate protective equipment such as goggles, gloves, etc. to avoid injury.

Keep the equipment clean: Regularly clean and maintain the impulse voltage generator to maintain its normal operation and extend its service life.

Regular inspection: Regularly inspect and maintain the components of the impulse voltage generator. If damage or abnormal conditions are found, they should be replaced or repaired in a timely manner.

Storage safety: When not in use, the impulse voltage generator should be stored in a dry, well ventilated, and sun free place, and ensure that the equipment is not damaged or contaminated.