GB 4943.1-2022 

GB 4943.1-2011 

Differences

4.4.3，

Annex T Mechanical strength tests

Stress relief test: T.8

4.2.7 Stress relief test

Add the situation of stress relief test. The evaluation contains the stability of thermal plasticity material structure.

Glass impact test: T.9

Glass stubborn test: T.9+10N push/pull tests;

Test for telescoping or rod antennas：T.11

N/A

Add requirements of glass material and mechanical strength of antenna.

4.4.4，5.4.12，6.4.9

Insulating liquid

N/A

Add requirement on insulating liquid replacing safety protection. Add requirements of electric strength, compatibility and flammability of insulating liquid.

4.8

Equipment containing coin/button cell batteries

N/A

Add requirements on protection instruction and structure for equipment with coin/button cell batteries. Tests of stress relief, battery change, drop, impact and crush are also required.

5.2

Classification and limits of electrical energy sources

N/A

Classify energy power into ES1, ES2 and ES3

5.3.2

Accessibility to electrical energy sources and safeguards. Use hinge joint testing jig and test jig that simulate child’s finger

Evaluate accessibility with ordinary hinge joint jig.

Add picture V.1 to show the hinge joint jig testing for products that may accessed by children.

For ES3 with higher than 420V peak, there should be an air bag

There’s only air gap requirement when voltage is over 1000V.a.c. or 1500V.d.c.

Moderate the scope of voltage that requires air gap.

5.3.2.4

Terminals for connecting stripped wire

N/A

Add requirement that equipment with stripped wire terminals cannot be accessed to ES2 or ES3 energy source

5.4.1.4

For Insulation of internal and external wiring, including power supply cords without temperature marking, the maximum temperature is 70℃

4.5.3 The maximum temperature of insulation of internal and external wiring, including power supply source is 75℃

Moderate the maximum temperature by decreasing 5℃, which is a stricter requirement.

5.4.9

Electric strength test, adopting highest testing voltage described as method 1, 2, 3.

5.2 electric strength test

Moderate testing voltage. The new version has required a larger testing voltage for basic insulation.

5.5，

Annex G components

IC that includes a capacitor discharge function (ICX): 5.5.2.2 or G.16

N/A

Add requirement on components testing

G.10.2+G.10.6

Discharge resistance 5.5.2.2 or G.10.2+G.10.6

N/A

SPD：5.5.7,G.8

N/A

IC current limiter: G.9

N/A

LFC: G.15

N/A

5.5.2.2

Capacitor discharge after disconnection of a connector: For capacitor voltage becomes accessible upon disconnection of a connector, discharge test shall conduct

2.1.1.7 Capacitor in equipment discharge: If capacity between polar is no higher than 0.1μF, then a test is not required

Moderate the scope for discharge test and moderate testing method and evaluation criterion.

5.6.8

Functional earthing for class II equipment should mark with

Appliance inlet shall comply with the creepage distance and clearance requirements.

N/A

Add requirement of class II equipment of earthing marking.

5.7

Measurement of touch current. Test under normal, abnormal conditions and single fault conditions using network of table 4 and 5 in IEC 60990

5.1 Measurement of touch current should test under normal condition with table 4 of IEC 60990.

Moderate testing condition and testing network. Instruction safety protection of touch current is also required.

6

Electrically-caused fire

4.7 fire-proof; 4.6

Add classification of power sources and potential ignition sources. The two versions have differences in protection theory, requirements and testing methods.

7

Injury caused by hazardous substances

1.7.2.6 ozone

Add other hazardous substances protection

8.2

Mechanical energy source classifications

N/A

Classify mechanical energy source into MS1, MS2 and MS3.

8.4

Safeguards against parts with sharp edges and corners. To test accessibility of equipment that may touch by children with hinge joint test jigs.

4.3.1 edge and corner

4.4 safeguard of dangerous movable parts. Test accessibility with ordinary testing method.

Add requirements on sharp edges and corners parts. Safety warning should be added. It also adds the requirement on equipment that may be touched by children.

8.5

For equipment having an electromechanical device for destruction of media, the wedge probe cannot access any moving parts

N/A

8.6.3

Relocation stability

N/A

Add requirements that applicable for MS2, MS3 on floor equipment

8.6.4

Glass slide test

N/A

Add requirements that applicable for MS2, MS3 console or monitor equipment

8.7

Equipment of MS2 and MS3 mounted to a wall, ceiling or other structure. Tested with method 1, 2 or 3 according to different situations

Equipment mounted to a wall or ceiling. Stress through the barycenter after installation with forces of 3 times of equipment (but no less than 50N) for 1 min.

Add testing method 1, 2 and 3 considering different ways of installation.

8.8

Handle strength

N/A

Add new requirement

8.9、8.10

Wheels or casters requirement of MS3 equipment

N/A

Add new requirement

8.11

Mounting means for slide-rail mounted equipment

N/A

Add safeguard instruction and mechanical strength test for slide-rail mounted equipment.

9.2

Thermal energy source classification

N/A

Add thermal energy source classification into TS1, TS2 and TS3.

9.3，9.4，

9.5

Safeguard against touch temperature thermal energy source. The ambient temperature should be 25℃±5℃. The maximum temperature should be different according to touching time.

4.5.4 The maximum temperature and test results are converted according to the maximum ambient temperature stated by manufacturers.

Moderate the testing ambient temperature and requirement on maximum temperature.

9.6

Requirements for wireless power transmitters

N/A

Add heating test for metal foreign objects

10.3

60825-1:2014进行评估

Laser radiation should be evaluated according to IEC 60825-1:2014

4.3.13.5 Laser (including LED): laser radiation should be evaluated according to GB 7247.1- 2012

Moderate the accordance of laser radiation, especially for classification and marking.

Optical fiber communication system should apply with IEC 60825-2

N/A

Add requirement on optical fiber

10.6

Safeguards against acoustic energy sources

N/A

Add classification of acoustic energy into RS1, RS2 and RS3

Annex E.1

Electrical energy source classification for audio signals

N/A

Add classification of audio signals energy source of ES1, ES2 and ES3.

Annex F

Equipment markings, instructions, and instructional safeguards

1.7 marking and note

Moderate marking logo and requirement

Annex G.7.3

Strain relief for non-detachable power supply cords. Tests include linear force and torque test

3.2.6 Strain relief test of soft wire includes linear force test

Add torque test

Annex M

Equipment containing batteries and their protection circuits:

Requirements for protection circuits, additional safeguards for equipment containing a portable secondary lithium battery, safeguard against risk of burn due to short circuit during carrying.

4.3.8 Batteries: requirement on protection circuit.

Add requirement of lithium battery equipment safeguard. Add charging safeguard, fireproof enclosure, dropping, charging and discharging function check, circulation, short-circuit safeguard, etc.