1、 Basic information of the standard:
Standard name: Wet and hot environmental conditions and technical requirements for condition monitoring devices for power grids
Standard No.: NB/T 10280-2019 (Energy Industry Standard of the People's Republic of China)
This standard was issued on November 4, 2019 and implemented on May 1, 2020.
Scope of this standard: This standard specifies the technical requirements, test methods, markings, packaging, and storage of condition monitoring devices used in power grids under humid and hot environmental conditions.
This standard is applicable to power grid condition monitoring devices used in humid and sub humid hot climate areas according to GB/T 4797.1-2018.
Test requirements:
1. Low temperature test
Climatic region | Place of use | severities | Testing process |
humidity | non weather protected location | temperature：-5℃； duration：16h | According to the test Ad, place the test sample in a test chamber at room temperature, and then adjust the temperature to -5 ℃± 2 ℃. After the test sample reaches temperature stability under this condition, it is powered on and operated under actual operating conditions to verify its ability to start at low temperatures, and continuously exposed to this condition for 16 hours |
weather protected location |
Sub humid heat | non weather protected location | temperature：-10℃； duration：16h | According to the test Ad, place the test sample in a test chamber at room temperature, and then adjust the temperature to -10 ℃± 2 ℃. After the test sample reaches temperature stability under this condition, it is powered on and operated under actual operating conditions to verify its ability to start at low temperatures, and continuously exposed to this condition for 16 hours |
weather protected location | temperature：-5℃； duration：16h | According to the test Ad, place the test sample in a test chamber at room temperature, and then adjust the temperature to -5 ℃± 2 ℃. After the test sample reaches temperature stability under this condition, it is powered on and operated under actual operating conditions to verify its ability to start at low temperatures, and continuously exposed to this condition for 16 hours |
2、High Temperature Test
Place of use | severities | Testing process |
non weather protected location | temperature：55℃； duration：16h | Conduct according to test Bd, place the test sample in a test chamber at room temperature, and then adjust the temperature to 55 ℃± 2 ℃. After the test sample reaches temperature stability under these conditions, it is powered on and operated under actual operating conditions to verify its ability to start at high temperatures, and continuously exposed to this condition for 16 hours |
weather protected location | temperature：45℃； duration：16h | According to test Bd, place the test sample in a test chamber at room temperature, and then adjust the temperature to 45 ℃± 2 ℃. After the test sample reaches temperature stability under these conditions, it is powered on and operated under actual operating conditions to verify its ability to start at high temperatures, and continuously exposed to this condition for 16 hours |
3、Temperature change test
Climatic region | Place of use | severities | Testing process |
humidity | non weather protected location | low temperature：-5℃； high temperature：55℃； Temperature change rate： 1 K/min duration：3h； Number of cycles：2 | According to test Nb, reduce the air temperature in the test chamber at a rate of (1 ± 0,2) Kmin to -5 ℃± 2 ℃. After the temperature in the chamber reaches stability, expose the test sample at this temperature for 3 hours. Then, increase the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 55 ℃ C ± 2 ℃. After the temperature in the chamber stabilizes, expose the test sample at this temperature for 3 hours. Then reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 25 ℃± 2 ℃. Conduct 2 cycles of the above test |
weather protected location | low temperature：-5℃； high temperature：45℃； Temperature change rate： 1 K/min duration：3h； Number of cycles：2 | According to test Nb, reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to -5 ℃± 2 ℃. After the temperature in the chamber reaches stability, expose the test sample at this temperature for 3 hours. Then increase the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 45 ℃± 2 ℃. After the temperature in the chamber reaches stability, the test sample is exposed to this temperature for 3 hours. Then reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 25 ℃± 2 ℃. Conduct 2 cycles of the above test |
Sub humid heat | non weather protected location | low temperature：-10℃； high temperature：55℃； Temperature change rate： 1 K/min duration：3h； Number of cycles：2 | According to test Nb, reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to -10 ℃± 2 ℃. After the temperature in the chamber reaches stability, expose the test sample at this temperature for 3 hours. Then increase the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 55 ℃± 2 ℃. After the temperature in the chamber reaches stability, the test sample is exposed to this temperature for 3 hours. Then reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 25 ℃± 2 ℃. Conduct 2 cycles of the above test |
weather protected location | low temperature：-5℃； high temperature：45℃； Temperature change rate： 1 K/min duration：3h； Number of cycles：2 | According to test Nb, reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to -5 ℃± 2 ℃. After the temperature in the chamber reaches stability, expose the test sample at this temperature for 3 hours. Then increase the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 45 ℃± 2 ℃. After the temperature in the chamber reaches stability, the product test sample is exposed to this temperature for 3 hours. Then reduce the air temperature in the test chamber at a rate of (1 ± 0.2) K/min to 25 ℃± 2 ℃. Conduct 2 cycles of the above test |
4、Alternating damp heat test
Place of use | severities | Testing process |
non weather protected location | high temperature：55℃ Number of cycles：2（48h） | The test sample is a complete machine in actual working conditions. Place the test sample in the effective space of the test chamber, and perform pre-treatment under conditions of 25 ℃ ± 3K temperature and 45%~75% relative humidity. The test sample reaches temperature stability and is cycled twice according to the cycle shown in Figure 1. After the end of the test cycle, remove the product from the test chamber and restore it under normal atmospheric conditions. Use a cotton cloth to wipe off all water stains on the surface of the test sample and components that can be contacted. After restoration, measure the insulation resistance and conduct performance tests. After the test sample is taken out of the test chamber, the appearance inspection shall be completed within 24 hours under normal test environmental conditions, and the determination of surface paint adhesion shall be completed within 8-24 hours |
5、 Constant damp heat test
severities | Testing process |
temperature：40℃±2℃； relative humidity：（93±3）%； Test time：96h | Place the test sample in the effective space of the test chamber, preheat it first, and raise the temperature to 40 ℃± 2 ℃ without humidification. After the temperature of the test sample reaches stability, adjust the relative humidity inside the chamber to (93 ± 3)% within 2 hours; Maintain for 96 hours at a temperature of 40 ℃± 2 ℃ and a relative humidity of (93 ± 3)%, then reduce the relative humidity to 73%~77% within 05 hours, and then adjust the temperature to room temperature within 0.5 hours |
6.1、 Salt spray test
Bottom metal material | Type of protective layer | eligibility requirements | Test time |
carbon steel | zinc | No white or grayish black, brown corrosion products present | 48 |
alloy steel | Zinc chromium coating | No white or grayish black, brown corrosion products present | 96 |
Copper and copper alloys | Ni-Cr | No gray white or green corrosion products present | 96 |
nickel | No gray white or green corrosion products present | 48 |
tin | No gray black or green corrosion products present |
silver | No gray white or green corrosion products present | 24 |
Aluminum and aluminum alloys | Anodization | No gray white products present | 48 |
6.2、Alternating salt spray test
severities | Testing process |
According to GB/T 2423.18-2012 Severity Level (2) | Before the test, measure the insulation resistance of the product and conduct functional tests according to regulations. The test samples are put into the salt spray cabinet according to the use state, and spray for 2h continuously under the temperature of 15 ℃~35 ℃. At the end of the spray process, put the tested equipment into a damp heat box with a temperature of 40 ℃± 2 ℃ and a relative humidity of (93 ± 3)% for 20 h~22 h according to the use status. Perform three cycles of the above test |
7、Mold test
severities | Testing process |
According to the test method 1,28d in GB/T 2423.16-2008 | Select the components of the equipment as the test samples. After the test is completed, immediately conduct a visual inspection according to relevant specifications |
8. Vibration test
a) Test purpose: To assess the adaptability of the test sample to vibration environment during operation.
b) According to standard: according to the provisions of GB/T 11287.
c) Test process and performance requirements: Conduct a vibration durability test with severity level 1 on the monitoring device. After the test, the device should not experience loosening of fasteners, mechanical damage, etc. Other performance requirements are the same as 5.1.
9. Impact test
a) Test purpose: To assess the adaptability of the test sample to the impact environment during operation.
b) According to standard: according to the provisions of GB/T 14537.
c) Test process and performance requirements: Conduct a severity level 1 impact durability test on the monitoring device. After the test, the device should not experience loosening of fasteners, mechanical damage, etc. Other performance requirements are the same as 5.1.
10. Collision test
a) Test purpose: To assess the adaptability of the test sample to the collision environment during operation.
b) According to standard: according to the provisions of GB/T 14537.
c) Test process and performance requirements: Conduct a severity level 1 collision test on the monitoring device. After the test, the device should not experience loosening of fasteners, mechanical damage, etc. Other performance requirements are the same as 5.1.
11. Electromagnetic compatibility test
Application components | Test process and performance requirements |
housing | Electrostatic discharge immunity test
The electrostatic discharge immunity test shall be conducted according to the method specified in GB/T 17626.2, with a severity level of 4. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test period; If the function or performance is temporarily reduced or lost, it should be able to recover on its own.
Radio frequency electromagnetic field radiation immunity test
The radio frequency electromagnetic field immunity test shall be conducted according to the method specified in GB/T 17626.3, with a severity level of 3. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test.
Power frequency magnetic field immunity test
The power frequency magnetic field immunity test shall be conducted according to the method specified in GB/T 17626.8, with a severity level of 5. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test.
Pulse magnetic field immunity test
The pulse magnetic field immunity test shall be conducted according to the method specified in GB/T 176269, with a severity level of 5. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test.
Damping oscillation magnetic field immunity test
The damping oscillation magnetic field immunity test shall be conducted according to the method specified in GB/T 17626.10, with a severity level of 5. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test.
|
AC power supply | a) Voltage sag immunity test.
The voltage sag immunity test shall be conducted according to the method specified in GB/T 17626.11, with a severity level of 3. Under the condition of interference, the device should function or perform normally within the technical requirements limit during and after the test; If the function or performance is temporarily reduced or lost, it should be able to recover on its own.
b) Electrical fast transient pulse group immunity test
The electrical fast transient pulse group immunity test shall be conducted according to the method specified in GB/T 17626.4, with a severity level of 4. Under the condition of interference, the device should function or perform normally within the technical requirements limit during and after the test; If the function or performance is temporarily reduced or lost, it should be able to recover on its own.
c) Surge (impact) immunity test.
The surge (impact) immunity test shall be conducted according to the method specified in GB/T 17626.5, with a severity level of 4. Under the condition of interference, the device should function or perform normally within the technical requirements limit during and after the test; If the function or performance is temporarily reduced or lost, it should be able to recover on its own.
d) Conducted disturbance immunity test induced by radio frequency field
The immunity test for conducted disturbances induced by radio frequency fields shall be conducted according to the method specified in GB/T 17626.6, with a severity level of 3. Under the condition of interference, the device should function or perform normally within the technical requirements limits during and after the test
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DC power supply | a) Electrical fast transient pulse group immunity test.
The electrical fast transient pulse group immunity test shall be conducted according to the method specified in GB/T 17626.4, with a severity level of 4. Under the condition of interference, the device should function or perform normally within the technical requirements limit during and after the test; If the function or performance is temporarily reduced or lost, it should be able to recover on its own.
b) Surge (impact) immunity test.
The surge (impact) immunity test shall be conducted according to the method specified in GB/T 17626.5, with a severity level of 4. Under the condition of interference, the device should function or perform normally within the technical requirements limit during and after the test; If the function or performance is temporarily reduced or lost, it should be able to recover on its own.
c) Conducted disturbance immunity test induced by radio frequency field.
The immunity test for conducted disturbances induced by radio frequency fields shall be conducted according to the method specified in GB/T 17626.6, with a severity level of 3. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test.
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I/O signal/control (including connection wires for functional grounding ports) | Electrical fast transient pulse group immunity test
The electrical fast transient pulse group immunity test shall be conducted according to the method specified in GB/T 17626.4, with a severity level of 4. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test: if the function or performance is temporarily reduced or lost, it should be able to recover on its own.
b) Conducted disturbance immunity test induced by radio frequency field.
The immunity test for conducted disturbances induced by radio frequency fields shall be conducted according to the method specified in GB/T 17626.6, with a severity level of 3. Under the condition of interference, the device should function or perform normally within the technical requirements during and after the test.
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12、Shell protection test
Place of use | Protection level IP |
indoor | IP31 |
outdoors | IP54 |
13、Solar radiation test
severities | Testing process |
Temperature: 55 ℃± 2 ℃; Number of cycles: 2 (48h) | Follow procedure B and cycle twice according to the cycle shown in Figure 2 (the temperature inside the test chamber rises or drops at a rate of less than 1K/min), with an irradiance of 1120W/m ² (300mm~3000mm), radiation should meet the spectral distribution requirements in GB/T 2423.24-2013, t1=25 ℃, t2=55 ℃ |
2、 Standard drafting unit:
3、ORT participated in drafting and published standards:
1. GB/T 35774-2017 'Specification for Performance Testing of Transport Packaging Components'
2. GB/T 4857.1-2019 'Basic Testing of Packaging, Transportation, and Packaging Components - Part 1: Marking Methods for Various Parts during Testing'
3. GB/T 4798.1-2019 'Classification of Environmental Conditions - Classification of Environmental Parameter Groups and Classification of Their Severity - Part 1: Storage'
4. GB/T 2421-2020 'Overview and Guidelines for Environmental Testing'
5. GB/T 2423.27-2020 'Environmental Testing - Part 2: Test Methods, Test Methods and Guidelines: Temperature/Low Pressure or Temperature/Humidity/Low Pressure Combined Tests'
6. GB/T 2423.51-2020 'Environmental Testing - Part 2: Test Methods - Test Ke: Flow Mixed Gas Corrosion Test'
7. GB/T 32065.8-2020 Marine Instruments - Environmental Testing Methods - Part 8: Temperature Change Test
8. GB/T 32065.10-2020 Marine Instruments - Environmental Testing Methods - Part 10: Salt Spray Test
9. GB/T 4797.9-2021 Classification of Environmental Conditions - Natural Environmental Conditions - Shock and Vibration Data Measured during Storage, Transportation, and Use
10. GB/T 2423.33-2021 Environmental Testing Part 2: Test Methods Test Kca: High Concentration Sulfur Dioxide Test
11. GB/T 2423.18-2021 Environmental Testing Part 2: Test Methods Test Kb: Salt Spray, Alternating (Sodium Chloride Solution)
12. NB/T 10279-2019 'Wet and Hot Environmental Conditions for Transmission and Transformation Equipment'
13. NB/T 10280-2019 'Wet and Hot Environmental Conditions and Technical Requirements for State Monitoring Devices Used in Power Grids'
14. YZ/T 0174-2020 Technical Requirements for Cold Chain Delivery Insulation Box
15. T/CPF 0012-2020 Guidelines for Testing Small Transport Packages for Express Delivery
16. T/CPF 0011-2020 Guidelines for Testing Electrical Transportation Packaging in E-commerce Logistics