GB/T 37132-2018General requirements and test methods of electromagnetic compatibility for wireless power transmission equipment (English PDF)

3.1 Terms and definitions

3.1.5 Port

A specific interface between the wireless power transmission device and the external electromagnetic environment.

Note: It includes shell port, AC power port, DC power port, antenna port, signal/control port, and telecom port, etc.

3.1.6 Test ancillary equipment

The basic equipment and/or control equipment required to provide the necessary communication connection and wireless power transmission for the test.

3.1.7 Rated load

A load which allows the wireless power transmission device to operate at rated power.

3.1.8 Maximum position shift

The maximum degree of position shift of power transmitter and power receiver.

3.1.9 Integrated Power Receiver

The power receiver in which wireless power receiving end is integrated with the power receiving part.

3.2 Abbreviations

The following abbreviations apply to this document.

AC Alternating Current

CDN Coupling/Decoupling Network

DC Direct Current

EMC Electromagnetic Compatibility

EUT Equipment Under Test

6.1 General

The following information in the wireless power transmission device's technical documentation, if necessary, shall be recorded in the test report.

a) Main functions to be checked of the EUT during and after EMC testing;

b) Auxiliary equipment used in connection with the wireless power transmission device during the test;

c) A method to verify that a communication connection is established and maintained;

d) Control function, data storage function, and other functions of the user under normal operation state, and evaluation methods for whether the integrity and functionality of these data are lost after the immunity test;

e) Working frequency range of wireless power transmission device;

f) Structure and operation instructions for manual recovery to normal work as specified in the technical documentation;

g) The software and hardware version of wireless power transmission device used in the test;

h) Use environment of wireless power transmission equipment;

i) Other non-generic test conditions involved in the test which shall be recorded.

6.2 Applicable methods for evaluating the test ancillary equipment

When evaluating the test ancillary equipment, the following methods can be used.

a) In the equipment technical documentation, declare that the immunity test and the radiated emission measurement are carried out separately;

b) Or declare compliance with other EMC standards;

c) Or, in accordance with the applicable terms of the standard, connect to a wireless power transmission device to complete the test, to demonstrate its applicability.

6.4 Performance criteria of wireless power transmission device

c) Performance criterion C During the test, the equipment under test is allowed for performance degradation or loss of function; and the actual operation state is allowed to be changed.

After the test, the equipment under test cannot work continuously in the predetermined manner and can only be recovered by operating the controller.

d) Performance criterion D During the test, the equipment under test is allowed for performance degradation or loss of function; and the actual operation state is allowed to be changed.

After the test, if the equipment or system is not repaired or replaced, the equipment under test cannot work continuously in a predetermined manner.

At the same time, for the performance criteria of immunity test of wireless power transmission device, where there are relevant special product and product-family electromagnetic compatibility standards, priority is given to their performance criteria.

7.1 Disturbance measurement

The applicability of the electromagnetic compatibility disturbance test for the relevant ports of wireless power transmission device and its auxiliary equipment is shown in Table 3.

9.2 Radiated disturbance immunity test

9.2.3 Performance criterion

For wireless power transmission device, it is recommended to adopt 6.4 performance criterion A.

9.3 Electrical fast transient/burst immunity test

9.3.1 Overview

This test item is applicable to fixed wireless power transmission devices and their auxiliary equipment.

This test item is applicable to the AC power port, signal/telecom/control port and DC power input port with a connecting cable exceeding 3 m.

The test shall be carried out in a typical configuration in which the EUT or EUT is combined with its ancillary equipment.

9.3.2 Test method and level

The test shall be carried out according to GB/T 17626.4-2018.

Class A wireless power transmission device shall meet the following requirements.

a) The test level of the signal/telecom/control port is an open-circuit voltage of 1 kV;

b) The test level of the DC power port is an open-circuit voltage of 2 kV;

c) The test level of the AC power port is an open-circuit voltage of 2 kV.

Class B wireless power transmission device shall meet the following requirements.

a) The test level of the signal/telecom/control port is an open-circuit voltage of 0.5 kV;

b) The test level of the DC power port is an open-circuit voltage of 0.5 kV;

c) The test level of the AC power port is an open-circuit voltage of 1 kV.

9.3.3 Performance criterion

For wireless power transmission device, it is recommended to adopt 6.4 performance criterion B.

9.4 Surge immunity test

9.4.1 Overview

This test item is applicable to fixed wireless power transmission devices and their auxiliary equipment.

The test shall be carried out in a typical configuration in which the EUT or EUT is combined with its ancillary equipment.

9.4.2 Test method and level

The test shall be carried out according to GB/T 17626.5-2008.

Class A wireless power transmission device shall meet the following requirements.

a) The test waveform is 1.2/50(8/20)µs;

b) For the AC power port, the test level shall be 2 kV (line-to-ground), 1 kV (line-to-line);

c) The test level for the DC power line is 0.5 kV (line-to-ground), 0.5 kV (line-to-line);

d) The test level of signal/telecom/control port is 1 kV (line-to-ground).

Class B wireless power transmission device shall meet the following requirements.

a) The test waveform is 1.2/50(8/20)µs;

b) For the AC power port, the test level shall be 2 kV (line-to-ground), 1 kV (line-to-line);

c) The test level for the DC power line is 0.5 kV (line-to-ground), 0.5 kV (line-to-line).

9.4.3 Performance criterion

For wireless power transmission device, it is recommended to adopt 6.4 performance criterion B.

9.6 Voltage dips, short interruptions immunity test (AC port)

9.6.1 Overview

This test item is applicable to fixed wireless power transmission devices and their auxiliary equipment.

The test shall be carried out in a typical configuration in which the EUT or EUT is combined with its ancillary equipment.

9.6.2 Test method and level

The test shall be carried out according to GB/T 17626.11-2008.

The voltage dip immunity test level of Class A wireless power transmission device is.

a) The supply voltage drops by 30%; and the duration is 10 ms;

b) The supply voltage drops by 60%; and he duration is 100 ms;

c) The supply voltage drops by 60%; and the duration is 1000 ms.

The voltage short interruption immunity test level of Class A wireless power transmission device is.

The supply voltage drops by more than 95%; and the duration is 5 s.

The voltage dip immunity test level of Class B wireless power transmission device is.

a) The supply voltage drops by 100%; and the duration is 10 ms;

b) The supply voltage drops by 100%; and the duration is 20 ms;

c) The supply voltage drops by 30%; and the duration is 500 ms.

The voltage short interruption immunity test level of Class B wireless power transmission device is.

The supply voltage drops by 100%; and the duration is 5 s.

9.6.3 Performance criterion

For Class A wireless power transmission device, it is recommended to use the performance criterion listed in Table 19. […]