Large industrial lightning impulse generator

NegotiableUpdate on 02/11

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Large industrial lightning impulse generators are 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 industrial lightning impulse 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 industrial lightning impulse generatorMaintenance and upkeep:

1. To ensure personal and equipment safety, it is necessary to regularly maintain the generator. To avoid dust accumulation, the generator should be wiped regularly, especially the surfaces of the insulation platform, insulation rod, etc. should be kept clean.

2. During operation and idle, the generator should be protected from moisture. When the surrounding air humidity is too high for a long time, the cover plate of the body should be opened; When the condensation on the inner wall of the insulation cylinder affects its use, clean hot air should be blown into each ventilation hole on the bottom to dry it.

3. After a period of use, lubricating oil should be added to each mechanical transmission part.

4. The semiconductor paint on the surface of the upper ceramic bushing near the middle flange of the high-voltage rectifier transformer should be well protected; If there is strong corona due to wear or failure, semiconductor anti corona paint should be sprayed to make the corona basically disappear.

5. If there is oil leakage or abnormal noise in the components of the generator, it should be stopped from use. It can only be put back into use after repair and passing the test.

6. If the ignition pulse system is not working properly, check for short circuits or open circuits in all parts of the ignition pulse system and overcome them.