10kVA 100kV AC DC Hipot Test Set
Product Introduction
The Ministry of Machinery and Electronics' "Test Transformers" standard is the basis for the production of the MEYDJ-W10kVA-100kV Power Frequency AC/DC Withstand Voltage Test Device, which incorporates significant advancements over earlier comparable products. A new product line called the TDM(G) series lightweight AC/DC high-voltage test transformers was created from the MEYD(G) series test transformers and improved in accordance with the national standard "ZBK-41006-89." Compact size, light weight, integrated structure, extensive functionality, high adaptability, and easy operation are characteristics of this series. Insulation strength tests under power frequency or DC high voltage on various high-voltage electrical equipment, electrical components, and insulating materials are especially appropriate for power systems, industrial and mining firms, and research organizations. It is a necessary piece of equipment for testing at high voltages.
Product Parameter (specification)
|
Product Model |
MEYDJ-W10kVA/110kV (belongs to the MEYDJ and TDM series of lightweight oil-immersed test transformers) |
|
Type Attributes |
Single-phase test transformer, connection group designation I.I |
|
Rated Capacity |
10kVA |
|
Rated High-Voltage Output |
110kV (RMS) |
|
Input Power |
380V (Uniform specification for 10kVA and above) |
|
Structure |
Single-frame core-type iron core structure; primary winding wound on core, high-voltage winding externally; octagonal enclosure |
|
Cooling Method |
Oil-immersed (equipped with transformer oil) |
Product feature and application
Single-frame core iron core + octagonal housing design ensures small footprint, light weight, and easy transportation/installation.
2. Practical Functionality:
MEYDJ(G) supports power frequency withstand voltage testing; TDM(G) features switchable AC/DC modes to meet diverse insulation strength testing requirements.
3. Flexible Scalability:
Supports cascading multiple units to double output voltage, or can be separated for individual use, offering high cost-effectiveness.
4. Precise measurement:
Paired with a resistive-capacitive divider to eliminate measurement errors caused by leakage reactance, ensuring reliable data.
5. Safe and reliable:
Multi-grounding design, equipped with current-limiting resistors, protective spark gaps, and other components. Standardized operating procedures provide comprehensive protection.
6. Wide applicability:
Suitable for power, industrial, mining, and research fields, compatible with test specimens of varying capacitance.
7. Strong compliance:
Meets standards set by the Ministry of Machinery and Electronics and relevant national regulations, ensuring authoritative test results.
Prodection details
Suitable for power systems, industrial and mining enterprises, and research institutions, this equipment is used to perform power frequency/direct current high-voltage insulation strength tests on high-voltage electrical equipment, electrical components, and insulating materials.
Company Qualifications
1)How do you switch between AC and DC output modes on the MEYDJ-W10kVA/110kV power frequency AC/DC withstand voltage test set?
Answer: Only the TDM (G) series supports AC/DC mode switching; the MEYDJ (G) series lacks DC functionality. Switching procedure: Insert shorting rod "D" to bypass the high-voltage silicon stack, enabling the device to output power frequency AC high voltage. Remove shorting rod "D" to connect the high-voltage silicon stack in series for half-wave rectification, enabling the device to output DC high voltage.
2)What are the specific grounding requirements for the secondary transformer when performing cascaded tests using the MEYDJ-W10kVA/110kV Power Frequency AC/DC Withstand Voltage Test Set?
Answer: During cascaded testing, the low-voltage winding X terminals, measurement winding F terminals, and high-voltage winding X terminals (high-voltage tails) of the second- and third-stage test transformers must be connected to their respective stage housings. Furthermore, the housings of the second- and third-stage transformers must not be directly grounded; they must be insulated from ground via insulating supports. Only the housing of the first-stage transformer is directly grounded.
3)When conducting tests with the MEYDJ-W10kVA/110kV power frequency AC/DC withstand voltage test set, how should one respond if the instrument pointer exhibits severe oscillation?
Answer: Immediately stop the voltage increase, quickly lower the voltage regulator to zero, and disconnect the power supply. Suspend the test and investigate the cause of the abnormality (e.g., insulation issues with the test specimen, poor wiring connections, etc.). After resolving the issue, restart the test to prevent damage to the equipment or test specimen.
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