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KDYD2845kV Winding inter turn impulse withstand voltage tester
KDYD2845kV Winding inter turn impulse withstand voltage tester

KDYD2845kV Winding inter turn impulse withstand voltage tester

Applications:

The KDYD-2845kV Intelligent Turn-to-Turn Withstand Voltage Tester is primarily used in industrial environments with strict requirements for electrical insulation performance and large-scale production or maintenance. Its typical application settings have the following characteristics:

  1. Motor and Transformer Manufacturing Workshops/Production Lines: This is the primary application scenario. The instrument is integrated into the final stage of production lines for motors (especially medium and large AC/DC motors) and transformers, serving as a mandatory safety inspection before delivery. On the production line, operators use its "one-button test" and automatic judgment features to perform rapid and efficient turn-to-turn insulation tests on every finished product, ensuring no critical defects like inter-turn short circuits are present before shipment.

  2. Large Equipment Maintenance and Repair Shops: In power plants, heavy machinery factories, or specialized motor repair centers, the instrument is used to verify the condition of motors, generators, and large transformers undergoing repair or overhaul. By comparing the test waveforms with original standard waveforms or those from normally functioning units of the same model, technicians can accurately determine whether the windings were damaged during repair and if the turn-to-turn insulation has been restored to good condition.

  3. Research and Quality Inspection Laboratories: In university, research institute, or third-party testing laboratories, the instrument is used for insulation performance research on new materials and processes, as well as for type testing of products. Its high output voltage of up to 45kV and precise waveform analysis capabilities allow it to simulate extreme operating conditions, providing critical data for evaluating the dielectric limits of new insulating materials and verifying the reliability of product designs.

  4. Environmental Requirements: Due to its large size (180kg cabinet-type unit) and equipped with casters, the instrument is typically placed in a spacious, indoor environment with a level floor. According to the documentation, its normal operating temperature range is 0–40°C, with relative humidity not exceeding 80% at 40°C. Therefore, it should be avoided in harsh environments that are damp, dusty, or subject to drastic temperature changes to ensure test accuracy and equipment longevity. Its sloped display and ergonomic layout also require adequate lighting and workspace in the operating area.

In summary, the KDYD-2845kV Intelligent Turn-to-Turn Withstand Voltage Tester serves three major fields: industrial manufacturing, equipment maintenance, and scientific research/testing. Its application environment emphasizes safety, standardization, and rigorous quality control.

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

The KDYD2845kV intelligent turn to turn withstand voltage tester is suitable for insulation testing of windings of large, medium and high voltage, AC and DC motors with rated voltage of 15000V and below; It can also be used for inter turn insulation detection of transformer windings and electrical coil windings. Due to the inconsistent insulation structure and insulation materials of motor and transformer windings, especially the different levels of operator craftsmanship, insulation damage can occur to varying degrees in processes such as winding, wire embedding, wire scraping, joint end shaping, and handling, resulting in various forms of inter turn insulation faults in the windings. Therefore, inter turn insulation is a weak link in motors and transformers.

Features:

Product Features:
1. The instrument is equipped with a built-in data acquisition card and industrial computer, which collects and displays waveforms for display, and then analyzes, processes, and creates report formats through software for saving and printing;
2. It can test single/three-phase, AC/DC motors, improving the applicability of the instrument;
3. The technical indicators (testing accuracy) of the instrument are relatively high domestically and meet the international standards for similar products.
4. The high-voltage circuit is equipped with a dual safety circuit consisting of a start button and a foot switch, ensuring safer and more reliable operation; The display part is designed with a sloping surface for easy and intuitive observation;
5. The instrument can be equipped with a built-in grounding protection function. When the instrument does not have a safe grounding, high voltage cannot be started (feature);
6. The wavefront time is around 200ns, which meets national standards. The waveform can be unfolded arbitrarily and any segment of the waveform can be analyzed. Better discriminability for inter turn faults in motors:
7. The instrument can be equipped with a safety barrier control switch, which automatically cuts off high voltage when the safety barrier is opened;
8. Imitate the M40 series turn to turn withstand voltage tester produced by PJ Electronics in the United States;
9. High frequency sensors isolated from the high-voltage circuit are used to directly display the current flowing through the thyristor and the waveform of the winding, preventing damage caused by thyristor overload and reducing interference with the oscilloscope;
The 10 thyristor working power supply is equipped with a regulated power supply to prevent power fluctuations from damaging the thyristor and enhance its lifespan;
The 11 thyristor adopts a common cathode grounding, greatly reducing the voltage of the high-voltage auxiliary power supply circuit and improving the reliability of the instrument;
There is a high-voltage protection circuit inside the 12 instruments, which is suitable for testing high-voltage single coils. When the tested coil experiences inter turn faults (especially inter turn short circuits), it will not damage the instrument;
13 has a large output energy, especially suitable for measuring low inductance windings (coils) in large capacity motors, transformers, electrical appliances, etc;
The 14 instrument is small in size, light in weight, and equipped with a directional wheel at the bottom, making it easy to move and suitable for on-site testing in production;
The 15 high voltage output circuit is equipped with LED digital display, and the output high voltage lead is made of impact resistant 100kV silicone rubber wire. The fixture uses large-sized and elastic clips to ensure better contact between the motor and the fixture;


The interturn gauge can detect the following faults:
Interturn insulation breakdown (interturn short circuit)
corona discharge
Winding breakage
Difference in number of turns

Parameter:

Product Technical Specifications:
1. Input voltage: 220V ± 5%; Frequency 50Hz/60Hz ± 2%;
2. Test range: continuously adjustable within the range of 0-45kVP; ±5% ;
3. Trigger frequency: 1 time/second
4. Wavefront time: 0.1-0.5 µ s (standard specification);
5. The tolerance is: (+0.3)/(-0.1) µ s;
6. Peak output voltage: 0-45kVP ± 5%;
7. Pulse capacitance: 0.01 μ F -0.1 μ F;
8. Maximum output energy: 101J;
9. Power consumption: 1000VA;
10. Insulation resistance: The insulation resistance of the power input terminal to the rack is ≥ 20M Ω;
11. Dielectric strength: The power input terminal can withstand 1500V/50Hz for 1 minute without flying fox or breakdown during the withstand voltage test on the rack
Phenomenon;
12. Environmental temperature: 0-40 degrees;
13. Relative humidity: ≤ 80% at 40 degrees Celsius;
14. Waveform tolerance: ± 3%
15. Dimensions: 900 × 550 × 1300; (Equipped with universal wheels at the bottom, easy to move)
16. Weight: 180kg;
17. Style: Cabinet style;
18. Scope of application: AC/DC motor coils with rated voltage of 15000V and below, as well as inter turn insulation withstand voltage tests for the entire machine.