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Arrangement of test methods for shielding effectiveness of high-voltage cables for new energy vehicles

Release time:

2022-04-19 00:00

Source:

　　(1) QC/T 1037-2016 High Voltage Cables for Road Vehicles

　　(2) GBT25087-2010 Circular, shielded and unshielded 60V and 600V multi-core sheathed cables for road vehicles

　　(3) Definition and requirements of GBT17737.1-2013 Coaxial Communication Cable Part 1 General Specification General Rules

　　(4) GB/T 37133-2018 Technical requirements for high-voltage and high-current wiring harnesses and connectors for electric vehicles

(5) GB/T31723.405-2015 coupling or shielding attenuation absorption clamp method

　　1 Scope

　　4. Principle of test method

　　5. Measurement

　　5.1 Equipment

　　5.1.1 General

Fig.1 Measurement of surface waves near the sample

　　5.1.2 Balun Requirements

　　Table 1 Performance characteristics of balanced-unbalanced converter (30MHz-1GHz)

　　Table 1 (continued) 

5.2 Test sample

　　5.2.1 Tested cable length

　　5.2.2 Preparation of test samples

Figure 6 Calibration device

Figure 7 Termination during calibration

　　5.4 Test device

　　5.4.1 Verification of the test device

 

　　5.6 Measurement procedure

 

　　Notes in the figure see Figure 1

　　Figure 13 Shielding device for remote measurement

　　(6) GB/T31723.406-2015 surface transfer impedance line injection method

　　1 Scope

　　4. General rules

　　5. Test device

　　5.1 Overview

Figure 1 Installation diagram

 

　　5.2 Equipment

　　5.4 Impedance matching circuit

　　6. Preparation of test samples

　　6.1 Overview

Figure 12 Calibration device

Century Wisdom (Suzhou) Testing Technology Co., Ltd

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