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KDYDJ-6kVA100kV Power frequency withstand voltage test series transformer
KDYDJ-6kVA100kV Power frequency withstand voltage test series transformer

KDYDJ-6kVA100kV Power frequency withstand voltage test series transformer

Applications:

The KDYDJ-6kVA/100kV Series Resonant Power Frequency Withstand Voltage Test Set, comprising its compact control box and lightweight oil-immersed test transformer, is ideally suited for on-site preventive maintenance and acceptance testing of medium-voltage electrical equipment in power distribution networks.

A typical scenario involves a team from a municipal power supply company conducting routine insulation checks on newly installed or repaired equipment at a 10kV substation. The technicians need to verify the integrity of components such as:

  • High-Voltage Switchgear: Testing the insulation strength between phases and between phases and ground.
  • Power Cables (10kV): Performing AC withstand voltage tests on cable runs after installation or repair.
  • Insulators and Bushings: Checking their ability to withstand operating overvoltages.
  • Distribution Transformers: Conducting routine dielectric tests.

In this field environment, the test set's features are crucial:

  1. Its small size, light weight (52kg for the transformer), and integrated wheels allow easy transportation into confined substations and quick setup without heavy lifting equipment.
  2. The user-friendly control box (18kg) provides precise, step-less voltage regulation from 0-250V input to smoothly ramp up the high voltage output to the required 50kV AC, with clear monitoring and reliable operation.
  3. The robust design of the oil-immersed transformer, with its high-quality core and insulation materials, ensures stable performance and accurate test results even in varying outdoor conditions.
  4. The integrated 100V metering winding allows for safe and accurate measurement of the high-voltage output through a standard voltmeter.

By applying the specified high voltage (e.g., 42kV for a 10kV system) for a duration like 1 minute, engineers can assess the insulation level, identify any potential defects (such as cracks or moisture ingress), and ensure the equipment meets safety standards before being energized, thereby guaranteeing the reliability and safety of the power grid. The device's portability, ease of use, and reliable performance make it an essential tool for such field applications.

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Profile:

**KDYDJ-6kVA/100kV Series Resonant Power Frequency Withstand Voltage Test Set: A Comprehensive Introduction**

The **KDYDJ-6kVA/100kV Series Resonant Power Frequency Withstand Voltage Test Set** is a complete, integrated high-voltage testing solution specifically designed for the dielectric strength evaluation of various electrical components and insulation materials. This lightweight and portable system consists of a dedicated control box and an oil-immersed test transformer, making it an ideal choice for both laboratory testing and demanding on-site applications in power generation stations, power distribution systems, and research institutions.

**System Overview and Key Features**

This test set stands out for its excellent performance, multifunctionality, compact size, light weight, reliable operation, attractive design, and convenient operation and maintenance.

*   **Compact & User-Friendly Control Box:** The control box (weighing 18 kg) serves as the command center. With a capacity of 6 kVA, it accepts standard 220V input power and precisely regulates the output to 0–250V at 20A, providing smooth and stable voltage control for the test transformer. Its intuitive interface ensures easy setup and safe operation.
*   **High-Performance Oil-Immersed Test Transformer:** The core component, also rated at 6 kVA, features a single-phase core-type design constructed from premium cold-rolled grain-oriented silicon steel sheets, ensuring high magnetic efficiency and low losses. The robust structure uses steel clamps for secure fixation.
    *   **Advanced Winding Design:** The high-voltage winding employs a cylindrical multi-layer "pagoda" structure made with high-dielectric-strength polyester enameled wire and superior insulation materials, delivering exceptional voltage endurance. The low-voltage winding is positioned externally for better heat dissipation and safety. An independent 100V metering winding facilitates accurate high-voltage measurement.
    *   **Optimized for Field Use:** Housed in an octagonal shell, the transformer weighs only 52 kg. Units above 10 kVA are equipped with movable iron wheels, but even this model's light weight and compact form factor ensure exceptional portability and ease of movement on job sites.

**Technical Specifications**

*   **Transformer Capacity:** 6 kVA
*   **Low-Voltage Side:** 200 V, 25 A
*   **High-Voltage (AC Output) Side:** 50 kV, 100 mA
*   **Turns Ratio (Measurement):** 500
*   **60-Minute Temperature Rise:** 50°C
*   **Impedance Voltage:** 10%
*   **No-Load Current:** <4%

**Primary Applications**

This versatile test set is a fundamental instrument for conducting insulation strength tests under specified voltages. It is used to evaluate the insulation level of a wide range of products—including electrical appliances, components, and insulating materials—identify insulation defects, and assess their ability to withstand overvoltage conditions. Typical applications include testing high-voltage switchgear, power cables, insulators, bushings, and transformers in power systems.

In summary, the KDYDJ-6kVA/100kV test set combines robust engineering with user-centric design, offering a reliable, efficient, and highly portable solution for critical high-voltage withstand testing across the power industry.

Features:

*   **Integrated System:** Complete test set comprising a control box and oil-immersed transformer for immediate use.
*   **Compact & Lightweight:** Designed for high portability with a small footprint and low weight (Control Box: 18kg, Transformer: 52kg).
*   **Easy to Move:** Features a portable design; larger models include movable iron wheels (implying ease of handling for this model as well).
*   **User-Friendly Operation:** Simple and convenient to use, with straightforward setup and control.
*   **Easy Maintenance:** Designed for simple servicing and upkeep.
*   **Reliable Performance:** Built with high-quality materials (cold-rolled grain-oriented silicon steel, premium insulation) for stable and dependable operation.
*   **Attractive Design:** Features an octagonal shell with a clean, professional appearance.
*   **High-Quality Core & Windings:** Utilizes a single-phase core-type design with superior silicon steel and a robust, multi-layer "pagoda" high-voltage winding structure for excellent voltage endurance.
*   **Precise Control:** The control box provides accurate 0-250V output regulation for smooth voltage ramping.
*   **Durable Construction:** Secured with steel clamps for a robust and long-lasting assembly.

Parameter:

Characteristics and parameters of the test transformer
Capacity: 6kVA
low-pressure side
Voltage: 200V Current: 25A

high-voltage side
communication output
Voltage: 50kV Current: 100mA

Measurement ratio: 500
60 minute temperature rise: 50 ℃
Impedance voltage: 10%
No load current:<4%
Weight: 52kg