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Shenzhen Northtest Testing Technology Co., Ltd. Northtest group Third party certification body

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Hot Line 400-800-6106
Northtest group · headquarters
Tel:0755-36995505 Q Q: Email:ntek@ntek.org.cn Blocks B, C and E of Fenda Science and Technology Creative Park, Xixiang, Baoan District, Shenzhen

Home appliance testing and certification

Basic introduction

The North Testing Lab was authorized, and professional laboratories have been set up in Shenzhen, Dongguan, and Kunshan to provide "one-stop" services for small appliance testing and certification.

Product Range
Household appliances, power tools, adjustment controllers using semiconductor devices, electric motor-driven electrical, medical equipment, electric toys, vending machines, and movie or slide projectors.
Out of scope are:
In all other standards, clearly put forward all the equipment required for emission in its radio frequency range, such as lamps, grid communication devices, etc.
Regulation controller equipped with semiconductor device with rated input current greater than 25A per phase and equipment with such regulation controller;
Separate power supply, etc.

EU CE certification

Electromagnetic compatibility directive: 2004/108 / EC
Test standards: EN55014-1 (EMI), EN55014-2 (EMS), EN61000-3-2 (Harmonic), EN61000-3-3 (Flicker)
Note: The above-mentioned EN 61000-3-2 and EN 61000-3-3 are applicable to the input current of each phase of the equipment is less than 16A.

EMI part
Continuous harassment
Terminal voltage:
a Power terminal, frequency range: 0.15 ~ 30MHz; it is also divided into two kinds of limits for household appliances / similar equipment and power tools
b. Load terminals and additional terminals
Disturbance power:
Frequency range 30M ~ 300MHz limit and 30M ~ 300MHz frequency range "Margin" limit (this limit is one of the basis for judging whether to measure radiation disturbance)
Radiation harassment:
The frequency range is 30MHz ~ 1GHz; it is not necessary to test this item when the following two conditions are met at the same time:
a. The measurement value of disturbance power is less than the above-mentioned frequency range 30M ~ 300MHz limit value minus the value of 30M ~ 300MHz frequency range "Margin";
b. The maximum clock frequency is less than 30MHz. Otherwise you need to test this project.
Intermittent harassment
Clicking sound:
150KHz, 500KHz, 1.4MHz, 30MHz four frequency points, judge by upper quartile
Harmonic current
Standard: EN 61000-3-2
Products with a rated voltage range of AC220 ~ 240V need to be tested for this project
Unlimited value for products with rated power of 75W and below, no test required
Voltage fluctuation, flicker
Standard: EN 61000-3-3
Products with a rated voltage range of AC220 ~ 240V need to be tested for this project;
Limit requirements: short-term flicker value Pst≤1.0
Long-term flicker value Plt≤0.65
D (t) ≤500ms for a time exceeding 3.3% during a voltage change
Relative steady state voltage change dc≤3.3%
The maximum corresponding voltage change dmax is divided into three types: 4%, 6%, 7%

EMS part
Product Categories
Category 1: Appliances without electronic control circuits
Category 2: Transformer toys with electronic control circuits, dual power toys, electric appliances powered by mains, electric tools, electric heating appliances and similar appliances (such as ultraviolet radiation meters, infrared radiation meters and microwave ovens), The internal clock frequency or oscillation frequency does not exceed 15MHz.
Category 3: Appliances with electronic control circuits and powered by batteries (internal or external batteries). Under normal use conditions, this type of appliance is not connected to the mains, and the internal clock frequency or oscillation frequency of its electronic control circuit does not exceed 15MHz.
Category 4: All other appliances within the scope of this standard

EMS performance criteria
Performance criterion A
During the test, the appliance shall continue to operate as intended. When the appliance is used as intended, its reduced performance or loss of function must not be lower than the performance level (or allowable loss of performance) specified by the manufacturer. If the manufacturer does not specify a minimum level of performance or allowable loss of performance, it can be inferred from product specifications, documentation, and the user's reasonable expectations of the appliance when intended for use.
Performance criterion B
After the test, the appliance shall continue to operate as expected. When the appliance is used as intended, its reduced performance or loss of function must not be lower than the performance level (or allowable loss of performance) specified by the manufacturer. During the test, performance degradation is allowed, but the actual operating state or stored data is not allowed to change. If the manufacturer does not specify a minimum level of performance or allowable loss of performance, it can be inferred from product specifications, documentation, and the user's reasonable expectations of the appliance when it is used as intended.
Performance criterion C
Temporary loss of function is allowed, as long as this function can be restored by itself, or it can be restored by operating the controller or operating according to the instruction manual.

US FCC certification

Certification form: FCCVerification
Detection standard: FCC 47CFR Part 15B
Test items (only EMI part):
Item Frequency range
Power side conduction (CE) 0.15 ~ 30MHz
Space radiation (RE) 30MHz ~ 1GHz
Note: FCC certification, some home appliances are exempt.

China CCC certification

Testing standards: GB4343.1, GB17625.1
Test items:
Terminal voltage Frequency range: 0.15 ~ 30MHz
Disturbance power Frequency range 30M ~ 300MHz
Radiation disturbance Frequency range 30MHz ~ 1GHz (applicable to toys only, different from CE certification)
Click sound 150K, 500K, 1.4M, 30MHz four frequency points
Harmonic current Standard: GB17625.1
Products with a rated voltage range of AC220 ~ 240V need to be tested for this item; products with a rated power of 75W and below have unlimited value regulations, no testing is required.

Australian RCM certification

Detection standard: AS / NZSCISPR 14.1
Test items:
Terminal voltage Frequency range: 0.15 ~ 30MHz
Disturbance power Frequency range 30M ~ 300MHz
Radiation disturbance Frequency range 30MHz ~ 1GHz (Whether the radiation measurement is the same as CE certification)
Click sound 150K, 500K, 1.4M, 30MHz four frequency points

Japan PSE certification

Japan PSE certification: diamond and round PSE
Detection standard: J55014-1
Test items (only EMI part):
Terminal voltage Frequency range: 0.15 ~ 30MHz
Disturbance power Frequency range 30M ~ 300MHz
Click sound 150K, 500K, 1.4M, 30MHz four frequency points

Taiwan BSMI certification

Detection standard: CNS13783-1
Test items (only EMI part):
Terminal voltage Frequency range: 0.15 ~ 30MHz
Disturbance power Frequency range 30M ~ 300MHz
Radiation disturbance Frequency range 30MHz ~ 1GHz (Whether the radiation measurement is the same as CE certification)
Click sound 150K, 500K, 1.4M, 30MHz four frequency points

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