Test conditions

(1) The test sample shall conform to the drawings and technical documents approved by the prescribed procedures.

(2) Each test item shall be carried out on a new power saver matched with a suitable and typical AC contactor, allowing some test items to be carried out on the same test piece without affecting its equivalence.

(3) Allow the power saver to be operated several times under no-load or load conditions before the test.

(4) Test volume tolerance

Except as specified in the test method, the test parameters allow the error to be specified as follows:

Voltage: ± 5%;

Power factor: ±0.05;

Current: ±5%;

It is convenient for the test on the premise of the manufacturer's consent, and is equally effective when the test parameters and test methods are more severe than the regulations.

Verify structure requirements

(1) Mark inspection and marking durability test

Check that the contents of the nameplate, signage and related technical documentation mark meet the requirements of Chapter 5.

For the signs on the power saver case or on the nameplate, use a piece of degreased cotton soaked in distilled water to rub back and forth 15 times in about 15 s, then wipe back and forth with a piece of skimmed cotton soaked in gasoline for about 15 s. 15 times, the logo should still be easy to identify.

Marks manufactured by methods such as embossing and molding may not be subjected to this test.

The markings on the outer casing or nameplate shall be readily identifiable after all tests specified in this standard and shall be free of any warpage.

(2) Humidity resistance test

This test uses the Db test method.

The test sample should be installed in the normal working position.

The test conditions are to be operated in accordance with the severe grades specified in 7.1.1.1 and the requirements of Chapter 5 of GB/T 2423.4-1993.

About the test of the test sample: The test work should be carried out within the last 1 h to 2 h of the "low temperature and high humidity" stage during the condition test. At this time, the temperature in the test chamber is 25 ° C ± 3 ° C, the relative humidity is between 95% and 98%, and the condensation on the product is avoided to affect the test results.

The measurement work should start from measuring the insulation resistance, and then carry out the power frequency withstand voltage test. The measured insulation resistance value should be no less than 1.0 MΩ, the withstand voltage test should be 2000 V, and the applied voltage should be 1 mm.

(3) Determination of the tracking index (CTI) of insulating materials

The insulation material used by the power saver is verified according to the test method, test equipment and test procedures specified in GB/T 4207.

The insulation tracking index (CTI) value of the insulating material should not be less than 100.

This test may not be performed if the data obtained by the manufacturer from an insulating material manufacturer or other reliable sources does demonstrate that the CTI value of the insulating material is greater than 100.

(4) Resistance to abnormal heat and fire hazard test

For the purpose of resistance to abnormal heat and fire, the test should be carried out on suitable parts on the power saver or in the power saver. However, in some cases it may be permissible to replace the test of the power saver or its components with a test on a preselected material.

The parts made of the insulation material of the power saver (except ceramic materials) shall be tested for resistance to abnormal heat and fire according to the provisions of GB/T 5169.4. The temperature at the top of the glow wire is as follows:

(a) Insulating material components necessary to maintain the current-carrying component and the grounding circuit component in a normal position, and tested at a temperature of 960 ° C ± 15 ° C for a test duration of 30 s ± 1 s;

(b) Insulation parts that are not necessary to hold the current-carrying parts and grounding circuit parts in a normal position, even if they are in contact, are tested at a temperature of 650 ° C ± 10 ° C for a test duration of 30 s ± 1 s. .

If several insulating material parts are made of the same material and the test temperature requirements are different, only one of the parts is tested at a higher temperature.

This test is only tested on the parts of a test piece.

This test was repeated in only one test article in the test.

Apply a glow wire once and the test time is 30s ± 1s.

During the test, the test sample should be placed in the most unfavourable position expected to be used (the test surface is in a vertical position).

Considering the conditions under which the intended heating element or the burning element may come into contact with the sample, the top of the glow wire should be applied to the surface specified on the sample.

If the following conditions are imposed, the glow wire test is considered to be acceptable:

1) no visible flame and no continuous glow;

2) The glow wire is removed within 30 s, and the flame on the sample is extinguished or the glow disappears.

In addition, the tissue under the sample should not catch fire or the pine board should not be burnt.

For the purpose of resistance to abnormal heat and fire, the test should be carried out on suitable parts on the power saver or in the power saver. However, in some cases it may be permissible to replace the test of the power saver or its components with a test on a preselected material.

(5) Measuring clearance and creepage distance

The calculation and measurement method of clearance and creepage distance shall be in accordance with Appendix A of GB/T 14041-2000, and the measured values ​​shall meet the basic requirements.

(6) Mechanical performance test of terminal blocks

1) General conditions of the test

Each test should be performed on the terminals of the intact and new power saver. When testing with round copper conductors, round copper conductors shall comply with the relevant standards.

2) Mechanical strength test of terminal blocks

During the test, the power-saving terminal blocks were made of 1.0 mm2 and 2.5 mm2 single-core hard copper wires, and the wires were connected and removed 5 times each, with a tightening force of 1.2 Nm.

After each test, loosen the tightening screw (mother). In the second test, a new wire test was used. The tightening device must not be damaged or changed after the test.

3) Accidental loosening and damage test of conductor (bending test)

The maximum number of connecting wires on the power terminal of the power saver is 2. The minimum cross-sectional area is 1.0 mm2 and the maximum cross-sectional area is 2.5 mm2. The wire type is a single core hard copper wire.

Test according to the provisions of GB/T 14041-2000.

4) Pull out test

The maximum number of connecting wires on the power terminal of the power saver is 2. The minimum cross-sectional area is 1.0 mm2 and the maximum cross-sectional area is 2.5 mm2. The wire type is a single core hard copper wire.

Test according to the provisions of GB/T 14041-2000.
5) Accessibility test of non-prefabricated round copper wire with the largest specified section

The connecting wire on the power saver terminal is a 2.5 mm2 single-core hard copper wire.

The test shall be carried out in accordance with 1.5 of GB/T 14041-2000.

Verify performance requirements

(1) Sequence (program) test project

There are two procedures for the Power Saver to be subject to the assessment of the sequential test. Each test shall be carried out on the same set of products in the order of the specified (a), (b), .... All sequential test items in the program test should not fail.

1) Sequence test item of program test 1

(a) temperature rise test;

(b) test of operating conditions;

(c) Dielectric performance test.

2) Sequence test project of program test 2

(a) Contactor breaking and breaking capacity test;

(b) The agreed operational performance test of the contactor.