How to process the testing report? What are the testing items and standards? 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

Report qualifications: CNAS, CMA, CAL, etc.

Display style: electronic version

Testing cycle: 3-15 working days (urgent)

Testing cost: quoted based on customer needs and experimental complexity

Sample size: selected for sending or visiting based on sample size

Testing items:

Partial parameters, general inspection, zero sequence impedance measurement of three-phase transformers, internal current transformer ratio and polarity test, transformer energy efficiency limit and level, no-load loss and no-load current measurement at 90% and 110% rated voltage, underground transformers Sound level measurement, external voltage withstand test, external coating test, induced voltage withstand test, transient voltage transmission characteristic measurement, on load tap changer test, mechanical life test, mechanical test, oil tank transportation adaptability mechanical test or evaluation, immersion test, pressure deformation test of liquid immersed transformer, pressure sealing test of liquid immersed transformer, vacuum deformation test of liquid immersed transformer, insulation inspection of iron core and clamp of liquid immersed transformer, temperature rise test, short-circuit withstand capacity test, measurement of no-load current and no-load loss, measurement of no-load current harmonics, measurement of winding to ground and winding to winding capacitance, Measurement of winding hot spot temperature rise, measurement of dielectric loss factor of insulation system capacitance, measurement of transportation quality, lightning impulse test, lightning chopping impulse test, frequency response measurement, all items, all parameters, pressure sealing test, temperature rise test under simulated operating conditions of buried distribution transformers, mechanical operation test, voltage ratio measurement and connection group label verification, vacuum deformation test and pressure deformation test, short-term thermal stability current and rated dynamic stability current test, short-circuit impedance and load loss measurement, no-load loss and no-load current measurement, winding resistance measurement, insulation oil test, transportation quality measurement, on-site vacuum sealing test of liquid immersed transformers, special insulation test, insulation liquid test, insulation type test, pressure sealing test of inflatable transformer oil tank, lightning protection test Impact test, insulation routine test, measurement of DC insulation resistance between windings and ground, measurement of dissolved gas in insulation liquid, measurement of transient voltage transmission characteristics, external coating inspection, measurement of fan and oil pump motor power, sound level measurement for each cooling method, protection level test, rated short-circuit making capacity test and rated breaking capacity test for high-voltage load switch, Measurement of ground insulation resistance, rated short time and peak withstand current capacity test, rainproof test, oil tank mechanical strength test, sealing test, low-voltage electrical component energization operation test, DC resistance imbalance rate measurement, marking, packaging, transportation and storage, and ability to withstand short circuits test

Detection standards:

1. JB/T 10544-2006 underground transformer

2. JB/T 10544-2018 underground transformer

3. JB/T 10544-2018 underground transformer 7

4. IP enclosure protection level (code) GB/T 4208-2017/IEC 60529:2013

5. JB/T10544-2006 Underground Transformers 7

6. JB/T 501-2006 Technical Parameters and Requirements for Oil Immersed Power Transformers JB/T 501-2006

7. JB/T 10544-2018 Underground Transformers JB/T 10544-2018

8. JB/T 10544-2006 JB/T 10544-2018 Underground Transformers

9. JB/T 10544-2018 JB/T 10544-2006 Underground Transformers

10. GB/T 6451-2015 Technical Parameters and Requirements for Oil Immersed Power Transformers or Combination Transformers

11 GB/T 1094.1-2013 Power Transformers Part 1: General GB/T 1094.1-2013

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