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As the rules change or new procedures are developed, please note that these interpretation and/or guidance may not apply; you should always refer to the latest rules and guidance documents to determine what equipment authorization procedures should be followed. For the latest guidance on specific topics or you don't know where to start, please feel free to contact GTG Group experts.

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High wattage power supply units are the backbone of various electronic systems. They are used for various purposes, such as powering electric motors, industrial equipment, and large computer systems. However, as they deal with high voltage and current, they can pose a great risk of electrical shock, fire, and explosion. Therefore, it is crucial to ensure that high wattage power supply units are tested for electrical safety before they are put into operation.

As GTG Group’s strategy updates, some of the below listed test items may no longer be available, please contact us for the latest information.

(1) Electrical safety test

  • Insulation resistance test: the test is performed to check the insulation resistance of the high wattage power supply unit. A high insulation resistance indicates good insulation, while a low insulation resistance indicates bad insulation. The test involves applying a high voltage between the conductive parts of the power supply unit and the earth. The insulation resistance is then measured using a megohmmeter.
  • Dielectric withstand test: the test is performed to check the ability of the high wattage power supply unit to withstand high voltage without breakdown. The test involves applying a high voltage between the conductive parts of the power supply unit and the earth for a specified period. The power supply unit should not breakdown during the test.
  • Ground continuity test: the test is performed to check the integrity of the ground circuit of the high wattage power supply unit. The test involves passing a high current through the ground circuit and measuring the voltage drop across the circuit. The voltage drop should be within the specified limits.
  • Leakage current test: the test is performed to check the leakage current of the high wattage power supply unit. The test involves applying a high voltage between the conductive parts of the power supply unit and the earth and measuring the leakage current. The leakage current should be within the specified limits.

(2) EMC test

Electromagnetic Compatibility (EMC) test is the process of evaluating the ability of electronic devices to operate in their intended electromagnetic environment without causing or suffering unacceptable electromagnetic interference (EMI). EMC test is critical for high wattage power supplies because these power supplies generate significant amounts of electromagnetic energy that can interfere with other electronic devices.

EMC test is divided into two types: emissions and immunity. Emissions test is conducted to ensure that the power supply does not emit excessive electromagnetic energy that can interfere with other devices. Immunity test, on the other hand, is conducted to ensure that the power supply can withstand electromagnetic energy from other devices without malfunctioning.

  • Emissions test: the test is conducted to ensure that the high wattage power supply does not emit excessive electromagnetic energy. This type of test is conducted in an anechoic chamber, which is a room designed to absorb all electromagnetic energy. During emissions test, the power supply is connected to a load and a spectrum analyzer is used to measure the electromagnetic energy emitted by the power supply. The power supply is tested at different loads and frequencies to ensure that it does not emit excessive electromagnetic energy.
  • Immunity test: the test is conducted to ensure that the high wattage power supply can withstand electromagnetic energy from other devices without malfunctioning. This type of test is conducted in a shielded room, which is a room designed to block all electromagnetic energy. During immunity test, the power supply is subjected to various electromagnetic fields generated by other devices. The power supply is tested at different frequencies and power levels to ensure that it can withstand electromagnetic energy without malfunctioning.
  • Radiated emissions test: the test is conducted to ensure that the high wattage power supply does not emit excessive electromagnetic energy through the air. During radiated emissions test, the power supply is connected to a load and a spectrum analyzer is used to measure the electromagnetic energy emitted by the power supply. The power supply is tested at different frequencies and power levels to ensure that it does not emit excessive electromagnetic energy through the air.
  • Conducted emissions test: the test is conducted to ensure that the high wattage power supply does not emit excessive electromagnetic energy through its power cord. During conducted emissions test, the power supply is connected to a load and a spectrum analyzer is used to measure the electromagnetic energy emitted by the power supply through its power cord. The power supply is tested at different frequencies and power levels to ensure that it does not emit excessive electromagnetic energy through its power cord.
  • Radiated immunity test: the test is conducted to ensure that the high wattage power supply can withstand electromagnetic energy that is transmitted through the air. During radiated immunity test, the power supply is subjected to various electromagnetic fields generated by other devices. The power supply is tested at different frequencies and power levels to ensure that it can withstand electromagnetic energy that is transmitted through the air.
  • Conducted immunity test: the test is conducted to ensure that the high wattage power supply can withstand electromagnetic energy that is transmitted through its power cord. During conducted immunity test, the power supply is subjected to various electromagnetic fields generated by other devices through its power cord. The power supply is tested at different frequencies and power levels to ensure that it can withstand electromagnetic energy that is transmitted through its power cord.
  • Voltage dips and interruptions test: the test is conducted to ensure that the high wattage power supply can withstand changes in input voltage without malfunctioning. During voltage dips and interruptions test, the power supply is subjected to various changes in input voltage to ensure that it can withstand changes in input voltage without malfunctioning.

(3) Energy efficiency test

Energy efficiency tests are critical when it comes to high wattage power supplies. The tests help to identify any potential issues with the power supply. By conducting these tests, we can minimize energy consumption, reduce emissions, and ensure that our devices are powered efficiently.

  • Power factor test: this test measures the amount of power drawn from a high wattage power supply relative to the energy it consumes. A power factor of 1.0 indicates that the power supply draws the exact amount of energy it needs, while a power factor below 1.0 indicates that the power supply is drawing more energy than it needs, which results in higher energy bills.
  • Efficiency test: this test measures the amount of energy that a high wattage power supply converts into useful power. The efficiency of a power supply is expressed as a percentage and is calculated by dividing the output power by the input power. A high-efficiency power supply minimizes energy consumption, reducing the amount of energy required to power devices.
  • Standby power test: this test measures the amount of energy that a high wattage power supply consumes when it is not in use. Standby power consumption can account for up to 10% of a household’s energy usage, so it is critical to minimize standby power consumption.
  • Load regulation test: this test measures how well a high wattage power supply maintains its output voltage when subjected to various loads. A good power supply will maintain a stable output voltage regardless of the load, which ensures that the devices powered by the power supply receive consistent power.

(4) Mechanical tests

  • Drop test: during transportation, high wattage power supplies may be subjected to physical shocks that can damage the equipment. A drop test is a mechanical test that simulates these shocks by dropping the equipment from a specific height onto a hard surface. The test ensures that the power supply can withstand these shocks without any damage.
  • Vibration test: the test simulates the vibration that the power supply may experience during its lifespan. The test is conducted by attaching the power supply to a vibration table and subjecting it to various frequencies and amplitudes.
  • Shock test: the test simulates the impact that the power supply may experience during transportation or installation. The test is conducted by dropping the power supply from a specific height onto a hard surface.
  •  Torsion test: the test is conducted to determine the power supply’s ability to withstand twisting forces. The test is conducted by subjecting the power supply to a twisting force and observing its performance.
  • Compression test: the test is conducted to determine the power supply’s ability to withstand compression forces. The test is conducted by applying pressure to the power supply and observing its performance.
  • Bending test: the test is conducted to determine the power supply’s ability to withstand bending forces. The test is conducted by subjecting the power supply to a bending force and observing its performance.

(5) Environmental tests

  • Dust test: the tests are used to determine the power supply’s ability to operate in environments with high levels of dust. The equipment is subjected to high levels of dust, and its performance is monitored to determine its ability to operate in these conditions.
  • Salt-fog test: the tests are used to determine the power supply’s ability to operate in environments with high salt levels. The equipment is subjected to high salt levels, and its performance is monitored to determine its ability to operate in these conditions.
  • Rain test: the tests are used to determine the power supply’s ability to operate in environments with high levels of rain. The equipment is subjected to high levels of rain, and its performance is monitored to determine its ability to operate in these conditions.
  • Ingress Protection (IP) test: IP tests are used to determine the power supply’s ability to operate in environments with high levels of dust and water. The equipment is subjected to dust and water, and its performance is monitored to determine its ability to operate in these conditions.

How can GTG assist you with the certifications or markings for high wattage power supply?

As GTG Group’s strategy updates, some of the below listed certifications or markings may no longer be available, please contact us for the latest information.

(1) UL certification

Underwriters Laboratories (UL) is a global safety certification company that provides certifications for a wide range of products, including high wattage power supplies. UL certification is a safety certification that is widely recognized in North America. The UL certification ensures that the product has been tested and meets the safety standards set by the United States and Canada. The certification also covers the product’s electrical and mechanical properties and its environmental impact.

(2) CE certification

CE certification is a mandatory requirement for all products sold in the European Union. The certification ensures that the product meets the safety, health, and environmental protection standards set by the EU. High wattage power supplies that have CE certification have been tested for electrical safety, electromagnetic compatibility, and environmental impact.

(3) TÜV certification

TÜV is a German certification organization that provides certifications for a wide range of products, including high wattage power supplies. The TUV certification ensures that the product meets the safety and environmental standards set by the organization. The certification also covers the product’s electrical and mechanical properties.

(4) FCC certification

The Federal Communications Commission (FCC) is a US government agency that regulates communications and electronic devices. FCC certification is a mandatory certification for all electronic devices sold in the United States, ensures that the product meets the electromagnetic interference (EMI) standards set by the agency. High wattage power supplies that have FCC certification have been tested for their EMI emissions and are safe to use.

(5) CB certification

CB certification is a global certification that ensures that the power supply meets the safety standards set by the International Electrotechnical Commission (IEC). It is recognized in over 50 countries, making it an essential certification for high wattage power supply that are sold internationally.

(6) CSA certification

The Canadian Standards Association (CSA) is a certification organization that provides certifications for a wide range of products, including high wattage power supplies. The CSA certification ensures that the product meets the safety standards set by the organization. The certification also covers the product’s electrical and mechanical properties.

(7) RoHS certification

RoHS (Restriction of Hazardous Substances) certification is a mandatory requirement for all products sold in the European Union. The certification ensures that the product does not contain any hazardous substances (lead, mercury, cadmium, and hexavalent chromium) that could harm the environment. High wattage power supplies that have RoHS certification have been tested for their environmental impact and are safe to use.

(8) Energy Star certification

Energy Star is a US government program that promotes energy-efficient products. The Energy Star certification ensures that the product meets the energy efficiency standards set by the program. High wattage power supplies that have Energy Star certification are energy-efficient and can help reduce energy consumption.

(9) EAC certification

EAC certification is mandatory for all electronic devices sold in Russia, Kazakhstan, and Belarus. It ensures that the power supply meets the safety and environmental standards set by the Eurasian Economic Union.

(10) ETL Certification

ETL stands for Edison Testing Laboratories. ETL is a certification organization that provides certifications for a wide range of products, including high wattage power supplies. The ETL marking is a voluntary marking for products sold in the United States and Canada. This marking indicates that the product has been tested and certified by Intertek. The certification also covers the product’s electrical and mechanical properties.

(11) CCC certification

CCC certification is a mandatory certification for all electronic devices sold in China. It ensures that the power supply meets the safety standards set by the Chinese government.

(12) BSMI marking

The BSMI marking is a mandatory marking for products sold in Taiwan. This marking indicates that the product meets the requirements of the relevant Taiwanese safety standards.

(13) PSE certification

PSE certification is a mandatory certification for all electronic devices sold in Japan. It ensures that the power supply meets the safety standards set by the Japanese government.

(14) SAA certification

SAA certification is a mandatory certification for all electronic devices sold in Australia and New Zealand. It ensures that the power supply meets the safety standards set by the Australian and New Zealand governments.

(15) C-Tick marking

The C-Tick marking is a certification that indicates that the power supply complies with the electromagnetic compatibility standards set by the Australian Communications and Media Authority.

(16) KC certification

KC certification is a mandatory certification for all electronic devices sold in South Korea. It ensures that the power supply meets the safety standards set by the Korean government.

(17) GS certification

GS certification is a safety certification issued in Germany. It ensures that the power supply meets the safety standards set by the German government and is widely recognized in Europe.

(18) GOST marking

The GOST marking is a mandatory marking for products sold in Russia. This marking indicates that the product meets the requirements of the relevant Russian safety standards.

(19) 80 PLUS certification

The 80 PLUS certification is a voluntary program that focuses on the energy efficiency of power supplies. It is not specific to high wattage power supplies but applies to power supplies of various wattage ratings.

The 80 PLUS certification tests power supplies to determine their efficiency at different load levels, ranging from 20% to 100% of their rated capacity. The certification levels are based on the percentage of energy the power supply can convert from the AC input into DC output, with higher levels indicating higher efficiency.

Here are the different 80 PLUS certification levels:

  • 80 PLUS: this is the base certification level, requiring power supplies to achieve at least 80% efficiency at 20%, 50%, and 100% of rated load.
  • 80 PLUS Bronze: power supplies with this certification must achieve at least 82% efficiency at 20% and 100% load, and 85% efficiency at 50% load.
  • 80 PLUS Silver: power supplies with this certification must achieve at least 85% efficiency at 20% and 100% load, and 88% efficiency at 50% load.
  • 80 PLUS Gold: power supplies with this certification must achieve at least 87% efficiency at 20% and 100% load, and 90% efficiency at 50% load.
  • 80 PLUS Platinum: power supplies with this certification must achieve at least 90% efficiency at 20% and 100% load, and 92% efficiency at 50% load.
  • 80 PLUS Titanium: power supplies with this certification must achieve at least 90% efficiency at 20% and 100% load, and 94% efficiency at 50% load.

(20) IECEx certification

IECEx is an international certification system that provides certifications for products that are used in explosive atmospheres. High wattage power supplies that have IECEx certification have been tested for their safety and are safe to use in explosive atmospheres.

(21) ATEX certification

ATEX is a European certification system that provides certifications for products that are used in explosive atmospheres. High wattage power supplies that have ATEX certification have been tested for their safety and are safe to use in explosive atmospheres.

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Why the biggest brands trust GTG Group?

GTG Group (Global Testing Group) is a certification company that offers testing and certification services to different industries. Our expertise in high wattage power supply testing and certification has made us a trusted name in the industry.

(1) Independent and impartial testing

GTG Group is a third-party testing company, which means we are not affiliated with any specific manufacturer. This impartiality can provide camera manufacturers and consumers with confidence in the accuracy and reliability of the testing process, and ensure that the camera meets the required standards.

(2) Confidentiality and security

GTG Group understands the importance of confidentiality and security when it comes to testing and certification. We ensure that our clients’ data and information are kept confidential and secure at all times. This ensures that our clients’ intellectual property and trade secrets are protected.

Contact GTG Group today for high wattage power supply testing and certification to avoid any legal issues that may arise from using a faulty high wattage power supply.

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