Conduction disturbance manual test_Century Wisdom (Suzhou) Testing Technology Co., Ltd

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Conduction disturbance manual test

Release time:

2022-12-16 00:00

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1. Scope of application

This test procedure is based on GB4824-2013/IEC/CISPR11:2010 and GB9254-2008/CISPR22:2006 standards. Applicable to the measurement of conductive disturbance field intensity of industrial, scientific and medical (ISM) equipment (hereinafter referred to as engineering medical equipment) and household and similar appliances designed to generate and/or use local radio frequency energy in the frequency band of 9kHz-400GHz.

2. Test equipment

Serial number	Device name	Model number
1	Rod Schwartz RF conduction disturbance test receiver	ESR7
2	Rod Schwartz artificial power network	ENV432/216
3	Rod Schwartz current probe	EZ-17
4	Rod Schwartz voltage probe	ESH2-Z3

3. Test conditions

The situation of the EUT relative to the grounding plate should be in accordance with the actual application situation: the floor device should be placed on the reference grounding plate and insulated from the grounding plate; Table equipment should be placed on a non-conductive table. The auxiliary equipment shall be arranged according to the normal installation method. If this means that auxiliary equipment also needs to be installed on-site, the same conditions apply to EUTs (e.g., distance to ground plate; If it is floor type equipment, it is the thickness of the insulation pad; Cable layout, etc.) to arrange it. Reference ground panels placed vertically or horizontally shall exceed the projection of the test layout by at least 0.5m and shall have a minimum size of 2 m by 2 m.

All units of the test system (including the EUT and peripherals, auxiliary devices or installations connected to the EUT) are separated by a distance of 0.1m. Place the AMN on the reference grounding plate and lap it so that it is 0.8m away from the boundary of the unit under test. This distance is the closest point between AMN and EUT. All other units of the EUT and auxiliary equipment shall be at least 0.8 m from the AMN.

Cables between units should drop from the back edge of the test table. If the distance between the sagging cable and the horizontal grounding plate is less than 0.4m, the extra long part of the cable should be folded back and forth in the center of the cable and tied up into a wire harness of no more than 0.4m according to the figure 8, so that it is at least 0.4m above the horizontal reference grounding plate. If the power cable supplied by the manufacturer is longer than 1m, it is folded back and forth in the middle of the cable to form the lm length cable, where the folded length is not more than 0.4m. If the cable cannot be folded to lm length due to the limitations of the EUT arrangement, it should also be as close to lm as possible. lm long power cables are used between EUT and AMN if they are not specified or provided by the manufacturer.

Table equipment test layout diagram

Test layout diagram of floor type equipment

Test method
a. Artificial power network

(1) Connect the equipment;

ESR7 heads

ESR7 back

ESR7 is connected to ENV432 in 22 places on the front; One place on the back of ENV432 connects to five places on the back of ESR7 for remote control. Power cables are connected at 11 places on the back of the ESR7 and controlled by switches. On the back of the ENV432, power supply is connected at 3 and 5 points, and ground at 4 points; ENV432 is connected to single-phase EUT at three points in front and three-phase EUT at four points in front.

ENV432 front

ENV432 back

(2) Turn on the 11 switches on the back of ESR7, press the power button to start the device and enter the main interface;

(3) Press the "SETUP" key, click Transducer, select ENV432, and click "Active On";

(4) Press the "LINES" key, Select "EN 55011 VOLTAGE QP CLAS", click "Select Traces to Check", and set it as "Trace1"; Select "EN 55011 VOLTAGE MAINS AV CLAS", click "Select Traces to Check", and set as "Trace2";

(5) Press "TRACE", click "Trace Wizard", and set "Trace/Final Meas" as shown below. “Trace 1; Clear Write; Max Peak; Quasi Peak”; “Trace 2; Clear Write; Average; CISPR AV”;

Click "Overview" to view the flowchart, close the switch, and change the connection mode;

Set "peak search" and "Margin" to 6dB by default;

Set Scan Table, Scan Stop to 30MHz, RF Input to 1, and Meas Time to 0.01s.

Set "List Settings" and select "EVN432; L1; N LA L2 L3 ";

(6) After setting, press the "RUN SINGLE" button for measurement;

(7) Press "PRINT", click "Report", then "Templates", create a new name and press "SAVE" to save. Click "New", click "Yes"; After setting, click "Preview" to generate the report, click "Preview" again to view, and click "Save" to save the report;

(8) Record and judge the test results;

b. Current probe

(1) Connect the equipment;

Current probe EZ-17

Connect the current probe to the ESR7 device, namely 22 places on the front of ESR7. When testing, the signal wire is placed in the ring with the current probe (winding);

ESR7 heads

(2) Press the power button to start the ESR7 device and enter the main screen;

(3) Press the "SETUP" key, click Transducer, select EZ-17, click "Active On"; (4) Press the "LINES" key, Select "EN 55022 CURRENT TELECOM QP CL", click "Select Traces to Check", and set as "Trace1"; Select "EN 55022 CURRENT TELECOM AV CL", click "Select Traces to Check", and set as "Trace2";

(5) Press "TRACE", click "Trace Wizard", and set "Trace/Final Meas" as shown below. “Trace 1; Clear Write; Max Peak; Quasi Peak”; “Trace 2; Clear Write; Average; CISPR AV”;

Click "Overview" to view the flowchart, close the switch, and change the connection mode;

Set "peak search" and "Margin" to 6dB by default;

Set Scan Table, Scan Stop to 30MHz, RF Input to 1, and Meas Time to 0.01s.

Set "List Settings" and select "Off" under "LISN Type".

(6) After setting, press the "RUN SINGLE" button for measurement;

(7) After measurement, press "PRINT", click "Report", then click "Templates", create a new name, and press "SAVE" to save. Click "New", click "Yes"; After setting, click "Preview" to generate the report, click "Preview" again to view, and click "Save" to save the report;

(8) Record and judge the test results;

c. Voltage probe

(1) Connect the equipment;

Connect the voltage probe ESH2Z3 to the ESR7 device, i.e. 22 in the figure below. The voltage probe needs to be grounded. Test, the voltage probe close to the signal line or connect the banana head measurement;

ESR7 heads

(2) Press the power button to start the ESR7 device and enter the main screen;

(3) Press the "SETUP" key, click Transducer, select ESH2-Z3, click "Active On";

(4) Press the "LINES" key, Select "EN 55011 VOLTAGE QP CLAS", click "Select Traces to Check", and set it as "Trace1"; Select EN 55011 VOLTAGE MAINS AV CLAS and mains Trace2.

(5) Press "TRACE", click "Trace Wizard", and set "Trace/Final Meas" as shown below. “Trace 1; Clear Write; Max Peak; Quasi Peak”; “Trace 2; Clear Write; Average; CISPR AV”;

Click "Overview" to view the flowchart, close the switch, and change the connection mode;

Set "peak search" and "Margin" to 6dB by default;

Set Scan Table, Scan Stop to 30MHz, RF Input to 1, and Meas Time to 0.01s.

Set "List Settings" and select "Off" under "LISN Type".

(6) After setting, press the "RUN SINGLE" button for measurement;

(8) Record and judge the test results.

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