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返回Testing Services
- EU RED Network Security Standard EN 18031
- Wireless and communication detection
- Mobile communication product certification
- Bluetooth BQB Product Certification
- FM/AM Product Certification
- WiFi Product Certification
- Wireless charging product certification
- Interphone product certification
- Base station certification
- SAR testing
- Receiver Product Certification
- 5G NR Product Certification
- UWB Product Certification
- Internet of Things authentication
- Electrical performance testing
- EMS testing - radiation anti-interference testing system (including radar waves)
- EMS Testing - Electrostatic Discharge
- EMS Test - Transient Conducted Immunity Test
- EMS Testing - Portable Transmitter Immunity
- EMS Test - High Current Injection (BCI) Test
- EMS test - low-frequency magnetic field anti-interference test
- EMI Testing - Transient Conducted Emissions Testing System
- EMI testing - low-frequency magnetic field emission
- EMI Test - Radiation Emission Test
- EMI Test - Conducted Emissions Test
- Automotive Electronic Testing
- Automotive ELV&VOC
- Reliability testing
- Temperature shock test
- Vibration testing
- Temperature shock/cold and hot shock test
- Instrument panel/instrument panel three comprehensive vibration test
- Comprehensive vibration test of door inner panel III
- Sunvisor Three Comprehensive Vibration Test
- Spoiler Three Comprehensive Vibration Test
- Three comprehensive vibration tests of car front and rear bumpers
- Three comprehensive vibration tests for lamp housing/lampshade
- Comprehensive vibration test of outer circumference three
- Automotive metal material testing
- Performance testing of automotive lighting fixtures
- Rapid temperature change test
- Vibration
- Common issues with vibration testing
- Common issues with fatigue testing
- Common issues with high and low temperature testing
- Conducted Interference (CE) - Suzhou Lixun Standard
- Conducted Immunity Test (CS) - Suzhou LCS Standard
- Electromagnetic Radiation Tolerance Test (RS) - Suzhou LCS Standard
- Electrical Fast Pulse Withstand Test (EFT) - Suzhou LCS Standard
- Voltage flicker test - Suzhou LCS standard
- Introduction to PFAS Testing
- MOSH/MOAH Mineral Oil Testing Service
- MOSH/MOAH Mineral Oil Testing and Certification Report Service
- Automotive ELV&VOC
- Consumer Product Testing Services - WEEE Chapter
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- Consumer Product Testing Services - RoHS Chapter
- Ecological textile testing
- Leather Footwear Inspection
- Food contact material testing
- Testing of toys and baby products
- Hazardous substance testing
- Other tests - pencil hardness test
- Other tests - Alcohol abrasion test
- Other tests -100 grid test
- Other tests - Paper tape wear test
- Other inspections - bending tests
- Other tests - tensile testing
- Other tests - Drum drop test
- Other tests - Voltage withstand test
- Mechanical testing - Packaging compression test
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- Mechanical testing - Three comprehensive vibration tests
- Mechanical testing - Vibration testing
- Climate environment testing - Xenon lamp aging test
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- Climatic Environmental Testing - Walkthrough Temperature Test
- Climatic environment test - cold and hot shock test
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- Climatic environmental testing - alternating damp heat test
- Climate environment testing - Temperature cycling test
- Climatic Environmental Testing - High Temperature Testing
- Climatic Environmental Testing - Low Temperature Testing
- Reliability testing
- Inspection of ship lighting fixtures
- COI Index Test for Medical Indoor Lighting
- Lamp safety inspection
- Luminaire energy efficiency testing
- EMC testing of lighting fixtures
- Integral Ball Laboratory
- Photobiology Experiment
- Light distribution test
- Lamp aging test
- Lamp IP waterproof
- Lamp performance testing
- Lamp reliability testing
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Other tests - Voltage withstand test
Test the project
Withstand voltage test
Reference standards
GB/T 1408.1-2016;
ASTM D149-2009(2013);
IEC 61180-1-2010;
GB/T 17627.1-1998
What is a voltage withstand test?
Withstand voltage test refers to the test to judge whether the performance of electrical equipment, electrical appliances, electronic components and edge materials are damaged due to environmental atmospheric conditions (such as temperature, humidity, altitude, salt fog, sandstorm, rain and snow, wind, earthquake, explosion, etc.) and electrical parameters (such as voltage, current, frequency, power, harmonics, stray, resonance, etc.) during transportation, use or storage.
The purpose of the voltage withstand test is to:
1. Determine whether the test sample meets the technical requirements specified in the standard;
2. Inspect the quality of the product and identify any defects in the tested item;
3. Verify whether the product meets the design requirements;
4. Check the structure of the product to prevent unqualified products from entering the market;
5. Product quality.
The steps of voltage withstand test:
1. Inspect the appearance of the product to be tested according to the requirements specified in the standard.
2. Perform electrical measurements on areas of suspicion to confirm compliance with standard requirements.
3. Measure the edge resistance value of the equipment with a megohmmeter and keep a record.
4. According to electrical principles, select the corresponding power frequency high voltage, then boost it to the required voltage, hold it for 1 minute, read the leakage current at this time, and compare it with the nominal value. If it is less than the specified value, it is considered qualified.
5. If the leakage current exceeds the specified value, it indicates that the equipment has leakage phenomenon and should be rechecked.
1、 Testing principle and purpose
Principle: Apply a high voltage higher than the working voltage on an insulator for a specified period of time. If the leakage current remains within a safe range, it is considered qualified.
Purpose: To test the tolerance of insulation materials under overvoltage and avoid potential electrical damage.
2、 Testing methods and standards
Method:
AC withstand voltage: Apply a 50Hz/60Hz sine AC voltage for 1-10 minutes (depending on the equipment type).
DC withstand voltage: Analyze the insulation state through the leakage current voltage curve.
Voltage calculation: Test voltage=working voltage × 2+1000V (if 220V equipment needs to be tested at 1440V).
3、 Equipment and Operation
Equipment: Voltage tester (including programmable power supply and signal conditioning module).
Operation:
Connect the standard resistor to the ground wire.
Set the alarm current (e.g. 5mA).
The voltage rises to the test value within 5 seconds and then gradually decreases after holding for 5 seconds.
4、 Application scenarios
Power cable: Polyethylene insulated cable withstand voltage test.
Transformer: Insulation testing for large power transformers.
Electrical products: mobile phone chargers, televisions, etc.
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