NB/T 10280-2019Warm-damp environmental conditions and technical requirements for power grid state monitoring devices (English PDF)

3.1 Power grid state monitoring devices

A device installed in the power grid to collect monitoring data on the operation status of various power equipment.

5.1 Test sequence and performance requirements

When two or more environmental test items are required for the same test sample, the product technical conditions generally follow GB/T 2421.1-2008 Chapter 7 and Appendix B.6 requirements to arrange the test sequence.

After each test is completed, the test sample should be able to work normally. Use insulation measurement between the live circuits and between the live circuits and the ground in the system The instrument performs insulation resistance measurement, and the measured insulation resistance meets the requirements of Table 1.

5.2 Test environmental conditions

It is recommended that the state monitoring device for the power grid be tested under the following atmospheric environmental conditions.

a) Temperature. 15°C~35°C;

b) Relative humidity. 25%~75%;

c) Air pressure. 86kPa~106kPa.

Note 1. If the relevant regulations consider that the test is not feasible under these atmospheric conditions, the actual atmospheric conditions during the test should be recorded in the test report.

Note 2. If there is no influence on the test result, the relative humidity can be ignored.

5.3 Low temperature test

a) Test purpose. to verify the adaptability of test samples under low temperature conditions.

b) According to the standard. according to the regulations in GB/T 2423.1-2008, according to test Ad.

c) See Table 2 for the test process.

5.4 High temperature test

a) Test purpose. to verify the adaptability of the test sample under high temperature conditions.

b) According to the standard. According to the regulations in GB/T 2423.2-2008, carry out according to test Bd.

c) See Table 3 for the test process.

5.6 Alternating damp heat test

a) Test purpose. used to determine the combination of high humidity and temperature cycle changes of the test sample and usually produce condensation on the surface of the test sample Adaptability under conditions.

b) According to the standard. According to the provisions of GB/T 2423.4-2008 Test Db Method 2.

c) See Table 5 for the test process.

5.7 Constant humidity test

a) Test purpose. used to verify the adaptability of test samples to humid environments when they are used in hot and humid areas.

b) According to the standard. according to the regulations in GB/T 2423.3-2016.

c) See Table 6 for the test process.

5.8 Salt spray test

5.8.1 Ka. Salt spray test

a) Test purpose. to verify the corrosion resistance of the metal protective layer of the test sample in service in hot and humid areas.

b) According to the standard. the metal protective layer of the test sample exposed to the air shall be carried out according to the regulations of GB/T 2423.17-2008.

c) The test process and qualification requirements are shown in Table 7.

5.8.2 Kb. Alternating salt spray test

a) Test purpose. to verify the anti-corrosion performance of the test sample in service in hot and humid areas.

b) According to the standard. according to the regulations in GB/T 2423.18-2012.

c) See Table 8 for the test process.

5.9 Mold test

a) Test purpose. To assess the degree and influence of mold growth of test samples under mold growth conditions.

b) According to the standard. according to the regulations in GB/T 2423.16-2008.

c) See Table 9 for the test process.

5.10 Vibration test

a) Test purpose. to assess the adaptability of the test sample to the vibration environment during operation.

b) According to the standard. GB/T 11287-2000.

c) Test process and performance requirements. Carry out a vibration endurance test of severity level 1 on the monitoring device, and the device should not be tight after the test.

Loose firmware, mechanical damage and other phenomena, other performance requirements are the same as 5.1.

5.11 Impact test

a) Test purpose. to assess the adaptability of the test sample to the impact environment during operation.

b) According to the standard. GB/T 14537-1993.

c) Test process and performance requirements. Carry out a severity level 1 impact durability test on the monitoring device, and the device should not be tight after the test.

Loose firmware, mechanical damage and other phenomena, other performance requirements are the same as 5.1.

5.12 Crash test

a) Test purpose. to assess the adaptability of the test sample to the collision environment during operation.

b) According to the standard. GB/T 14537-1993.

c) Test process and performance requirements. Carry out a severity level 1 crash test on the monitoring device. After the test, the device should not have any fasteners Looseness, mechanical damage and other phenomena, other performance requirements are the same as 5.1.

5.13 Electromagnetic compatibility test

a) Test purpose. to verify the electromagnetic compatibility of the test sample in actual operation.

b) According to the standard. according to GB/T 17626 and DL/T 1432.1-2015.

c) The test process and performance requirements are shown in Table 10.