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

Testing process

1. Sending samples

2. Checking requirements

3. Targeted quotation

4. Both parties confirm, sign a contract, and start the experiment

5. Completing the experiment: The testing cycle (can be expedited) may change according to the sample and its testing items/methods, and engineers can be consulted

6. Issuing the testing report and providing post service.

Testing items:

Partial discharge test, short-circuit impedance and load loss measurement, lightning impulse test, partial parameters, partial discharge measurement, induced voltage withstand test, lightning impulse test, sound level measurement, shell protection level, external voltage withstand test, climate test (thermal shock test), temperature rise test, environmental test, voltage ratio measurement and connection group label verification, short-circuit withstand capacity test, no-load loss and current measurement, winding resistance measurement.

, Measurement of no-load loss and no-load current at 90% and 110% rated voltage, measurement of insulation resistance of windings to ground, measurement of zero sequence impedance of three-phase transformers, measurement of dielectric loss factor, climate test, insulation resistance measurement, lightning impulse test (including cutoff), measurement of short-circuit impedance and negative load loss, measurement of DC insulation resistance of windings to ground and between windings, measurement of no-load loss and no-load current, wiring group and polarity, voltage ratio, AC withstand voltage of winding and bushing, DC resistance of winding and bushing, insulation resistance, absorption ratio or polarization index of winding and bushing, measurement of no-load current and no-load loss, all items, operation test of on load tap changer, voltage ratio measurement and connection group label verification, DC resistance imbalance rate of winding, insulation resistance, all parameters, allowable temperature and temperature rise, appearance quality, installation size and position, grounding and insulation resistance, Voltage and current, climate, environmental and combustion level tests, temperature rise, short-circuit impedance and load loss, insulation level, deviation

Detection standards:

1. IEC 60076-10:2001 Power Transformers Part 10: Sound Level Determination 11

2. JB/T501-2006 Power Transformer Test Guidelines 11.6

3. GB/T1094.11-2007 IEC 60076-11:2004, MOD Power Transformers Part 11: Dry Transformers GB/T1094.11-2007 IEC 60076-11:2004, MOD

4. GB 1094.11-2007 Power Transformers Part 11: Dry type Transformers 22

5. IEC 60076-1:2011 Power Transformers Part 1: General 11.3

6. GB/T1094.4-2005 Power Transformers Part 4: Guidelines for Lightning Impulse and Operational Impulse Testing of Power Transformers and Reactors 7

7. GB 50150-2016 Electrical Equipment Installation Engineering Electrical Equipment Handover Test Standard 8.0.6

8 DB11/065-2010 "Technical Specification for Electrical Fire Protection Testing" 4.2.1, 4.2.2

9. GB/T1094.3-2017 Power Transformers Part 3: Insulation Level, Insulation Test, and External Insulation Air Gap 11

10. GB/T 1094.4-2005 Power Transformers Part 4: Lightning Impulse and Operating Impulse Test Guidelines for Power Transformers and Reactors 7

11. IEC 60076-11:2004 "Power Transformers Part 11: Dry Transformers" 24

12 IEC60076-4:2002 Power Transformers Part 4: Guidelines for Lightning Impulse and Operating Impulse Testing of Power Transformers and Reactors 7

13, GB/T 10228-2015 Technical Parameters and Requirements for Dry Power Transformers

14, GB/T 1094.11-2007 IEC60076-11:2004 EN60076-11:2004 Power Transformers Part 11: Dry type Transformers

15, IEC60076-3:2013 Power Transformers Part 3: Insulation Level, Insulation Test and External Insulation Air Gap 11

16, IEC 60076-3:2013 Power Transformers Part 3: Insulation Level, Insulation Test and External Insulation Air Gap 10

17, GB T 1094.1-2013 Power Transformers Part 1: General 11.5

18, GB/T 1094.11-2007; IEC 60076-11:2004 Power Transformers Part 11 Dry type Transformers 24

19, GB/T 1094.11-2007 IEC 60076-11:2004 IEC 60076-11:2018 Power Transformers Part 11: Dry type Transformers

20, GB/T 1094.11-2007 IEC 60076-11:2004 Power Transformers Part 11: Dry type Transformers

100% inspection process:

1. Telephone communication and confirmation of requirements 2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is required