Offer custom-designed products with varying voltage levels to meet the requirements of different national power grids and provide OEM services.
Tengyi Testing Workshop
Our testing laboratory, situated within our factory, spans over 1,000 square meters and is equipped to test 3 transformers simultaneously. With 2 independent three-phase test systems, high voltage AC test equipment, and impulse voltage generators for Lightning Impulse (LI) and Switching Impulse (SI) tests, we are capable of performing all routine, type, and special tests in accordance with IEC and IEEE standards for our entire product range, up to 600 MVA and 800 kV.
Our Power Transformer Test Bay has received ISO 17025 accreditation, confirming our laboratory’s competence. The National Accreditation Authority has granted this accredited status, enabling Tengyi to conduct both accredited laboratory and on-site testing of power transformers.
This sample report illustrates how product-specific testing results are documented. For model S20-M-800-0.4/11-NX2, the report records tests including temperature rise, sound level, lightning impulse, insulation, losses, pressure and leakage, overload, and short-circuit withstand. The reported conclusion applies only to the tested sample.
Please contact Tengyi to confirm the applicable test documents for other ratings or project specifications.
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Message*:1. What is the intended application? (e.g., Electrolysis/Electroplating/DC Smelting/Other)2. Required DC output: Current(A)/ Voltage(V)3. Preferred rectification method? (Bridge/Double Reverse Star/Other)4. What is the grid-side voltage?(V)5. Desired voltage regulation range?6. Short-circuit impedance requirement?7. Cooling method? (e.g., ONAN/ONAF/Forced air)8. Additional special requirements (e.g., Constant Power Requirement, Load Characteristics, Altitude, Temperature Rise, Phase Number, Frequency, etc.)
Message*:1. AC measurement parameters (voltage, access method, power, current, frequency, etc.)2. DC side parameters (battery capacity, voltage, voltage range, rated charge and discharge rate, DC maximum current)3. Other special requirements.
Message*:1. What's your rated capacity?(kVA)2. What's your rated voltage?(kV)3. What's your frequency?(Hz)4. Your expected material, copper/aluminum?5. What is it used for specific projects and sites?6. Loop feed or radial feed?
Message*:1. Pls kindly provide the HV&MV electric schematic diagram and technical protocol.2. Main electrical component models, specifications, parameters, brands?3. Transformer capacity(KVA), voltage(kv) and frequency(HZ)?4. What is it used for specific projects and sites?
Message*:1. What's your rated capacity?(kVA)2. What's your rated voltage?(kV)3. What's your frequency?(Hz)4. Your expected material, copper/aluminum?5. What is it used for specific projects and sites?
