How to handle the testing report of the sample? What are the scope and standards of testing? Today, the editor of Baijian Testing will take you to understand the specific tests required for the relevant testing business. At the same time, Baijian can also design testing plans based on corresponding testing standards or according to your needs

Display style: Electronic version

Testing cycle: 3-15 working days (expedited)

Report qualifications: CNAS, CMA, CAL, etc.

Testing items:

Measurement of no-load loss and no-load current at 90% and 110% rated voltage, sound level measurement (20kV), external coating inspection, sealing test, sound level measurement for each cooling method, induced voltage withstand test (10kV and 20kV), transient voltage transmission characteristics measurement, and on load tap changer test.

, Mechanical strength (positive pressure) test of oil tank, pressure deformation test of liquid immersed transformer, on-site vacuum sealing test of liquid immersed transformer, vacuum deformation test of liquid immersed transformer, insulation inspection of iron core and clamp of liquid immersed transformer, voltage ratio measurement and connection group label verification (10kV and 20kV), short-circuit withstand capacity test, no-load current and no-load loss measurement (20kV), no-load current harmonic measurement (20kV), Winding to ground insulation resistance measurement (10kV and 20kV), winding resistance measurement, winding resistance measurement (10kV and 20kV), winding DC resistance measurement, insulation routine test, insulation type test, insulation oil test (20kV), insulation liquid test, insulation special test, insulation special test (20kV), insulation resistance measurement, transportation quality measurement, lightning impulse test (10kV and 20kV), frequency response measurement, fan and oil pump motor power measurement, Measurement of zero sequence impedance of three-phase transformers, pressure sealing test of inflatable transformer oil tank, partial and all parameters, measurement of sound level, external voltage withstand test, induction voltage withstand test, pressure sealing test of liquid immersed transformer, temperature rise test, voltage ratio measurement and connection group label verification, measurement of short-circuit impedance and load loss, measurement of no-load loss and no-load current, measurement of DC insulation resistance between windings to ground and between windings, lightning impulse test, Internal current transformer ratio and polarity test, temperature rise test (20kV), three-phase transformer zero sequence impedance measurement (20kV), short-circuit impedance and load loss measurement (10kV and 20kV), oil tank transportation adaptability mechanical test or evaluation, insulation liquid dissolved gas measurement, external pressure withstand test (10kV and 20kV), short-circuit withstand capacity test (20kV), winding hot spot temperature rise measurement, mechanical strength test, three-phase transformer winding DC resistance imbalance rate, single-phase Measurement of insulation resistance of three-phase transformers, sealing tests of single-phase and three-phase transformers, mechanical strength (positive pressure) tests of single-phase and three-phase transformer oil tanks and storage cabinets (if any), marking, lifting, packaging, transportation, and storage, measurement of winding resistance of transformers with high voltage of double voltage (10kV and 20kV), measurement of voltage ratio of transformers with high voltage of double voltage and verification of connection group numbers (10kV and 20kV), Measurement of short-circuit impedance and load loss of transformers with dual voltage for high voltage (10kV and 20kV), measurement of no-load current and no-load loss of transformers with dual voltage for high voltage (20kV), measurement of ground insulation resistance of transformer windings with dual voltage for high voltage (10kV and 20kV), routine insulation test of transformers with dual voltage for high voltage (10kV and 20kV), insulation oil test of transformers with dual voltage for high voltage (20kV), and sealing test of transformers with dual voltage for high voltage, Temperature rise test (20kV) for high voltage dual voltage transformers, insulation type test (10kV and 20kV) for high voltage dual voltage transformers, mechanical strength test for high voltage dual voltage transformers, special insulation test (20kV) for high voltage dual voltage transformers, zero sequence impedance measurement (20kV) for high voltage dual voltage three-phase transformers, and short-circuit withstand capacity test (20kV) for high voltage dual voltage transformers, Measurement of no-load current harmonics in transformers with dual voltage for high voltage (20kV)

Detection standards:

1. GB/T25289-2010 Technical parameters and requirements for 20kV oil immersed distribution transformers

2. GB/T 25289-2010 Technical parameters and requirements for 20kV oil immersed distribution transformers

3. GB/T 25289-2010 Technical parameters and requirements for 20kV oil immersed distribution transformers

The purpose of the detection report:

1 Project bidding: Provide authoritative third-party CMA/CNAS qualification reports 2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to reassure consumers 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production process problems