Conducted disturbance measurement system

Test System

Lamps, household appliances, power tools, power adapters, and other equipment containing switching power supplies.

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发布时间: 2023-01-05 15:57:26

1. Scope of application:

Lamps, household appliances, power tools, power adapters, and other equipment containing switching power supplies.

2. Implementation standards:

GB17743-2007 Limits and measurement methods for radio disturbance characteristics of electrical lighting and similar equipment
GB4824-2012 Electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment, limits and measurement methods 2004
GB9254-2008 Radio disturbance limits and measurement methods for information technology equipment

3. Measurement frequency range:

9k-30M, 30M-300M, 30M-1G

4. System composition:

Artificial power network:
①220V~: ZN3760C (9k-30M)

②380V~: ZN3770A (150k-30M).

Power supply filter: (common mode and differential mode filtering are both greater than 80dB)
Test bench: 1m×2m×0.8m (wooden table)
Ground copper plate: 1m×2m×2mm (ground resistance less than 4Ω)
EMI receiver ZN3951E (radiation limiter ZN1550B)
Absorption power clamp ZN23201
Auxiliary pliers ZN23202
Test guide rail (6.5m long) manual/electric 2m×2m DD-600
Controller (including 10m optical fiber) ZN2363U
Reflector: 2m×2m×2mm (including bracket)
Measurement calibration line (7m/φ4)
Coupling and decoupling network ZN3750-A

5. Test steps:

(1)9k-30M

① Set up the test system according to the schematic diagram;
② To ensure that the system is not interfered with, an unloaded scan can be performed before the test;
③After confirming that there is no interference, follow the steps to set up;