ORT's Warm-Damp Environmental Conditions And Technical Requirements For Power Grid State Monitoring Devices

Damp heat

No weather protection place

-5℃;

Duration: 16h

Carry out according to test Ad, put the test sample into the test chamber at room temp., and then adjust the temp. to -5℃±2℃. After the test sample reaches a stable temp. under this condition, it is energized and operated under actual working conditions to verify its ability to start the machine at low temp. and continue to be exposed under this condition for 16h.

Weather protection place

Sub-humid heat

No weather protection place

-10℃；

Duration: 16h

Carry out according to test Ad, put the test sample into the test chamber at room temp., and then adjust the temp. to -10℃±2℃. After the test sample reaches a stable temp. under this condition, it is energized and operated under actual working conditions to verify its ability to start the machine at low temp. and continue to be exposed under this condition for 16h.

Weather protection place

-5℃；

Duration: 16h

Carry out according to test Ad, put the test sample into the test chamber at room temp., and then adjust the temp. to -5℃±2℃. After the test sample reaches a stable temp. under this   condition, it is energized and operated under actual working conditions to   verify its ability to start the machine at low temp. and continue to be   exposed under this condition for 16h

No weather protection place

55℃；

Duration: 16h

Carry out according to test Bd, put the test sample into a test chamber at room temp., and then adjust the temp.   to 55℃±2℃. After the test sample reaches a stable temp. under this condition,   it is energized and operated under actual working conditions to verify its ability to start the machine at a high temp. and continue to be exposed under this condition for 16h.

Weather protection place

45℃；

Duration: 16h

Carry out according to test Bd, put the test sample into the test chamber at room temp., and then adjust the temp. to 45℃±2℃. After the test sample reaches a stable temp. under this condition, it is energized and operated under actual working conditions to verify its ability to start the machine at a high temp. and continue to be exposed under this condition for 16h.

No weather protection place

Low temp.: -5℃;

High temp.: 55℃; Temp. Change rate:   1 K/min; Duration: 3h; Number of cycles: 2

According to test Nb, the air temp. in the test, the chamber is reduced to -5℃±2℃ at a rate of 1±0,2Kmin. After the temp. in the chamber reaches a stable temp., the test sample is exposed to this temp. for 3h. Then the air temp. in the test, the chamber is increased to   55℃±2℃ at a rate of 1±0.2K/min. After the temp. in the chamber reaches a   stable level, the test sample is exposed to this temp. for 3h. Then reduce the air temp. in the test chamber to 25℃±2℃ at a rate of 1±0.2K/min. Perform   2 cycles of the above test.

Weather protection place

Low temp.: -5°C;

High temp.: 45℃;

Temp. change rate:

1 K/min

Duration: 3h;

Number of cycles: 2

According to test Nb, the air temp.   in the test, the chamber is reduced to -5℃±2℃ at a rate of 1±0.2 K/min. After the temp. in the chamber is stable, the test sample is exposed to this temp. for   3 hours. Then the air temp. in the test, the chamber is increased to 45℃±2℃ at a   rate of 1±0.2K/min. After the temp. in the chamber reaches a stable level,   the test sample is exposed to this temp. for 3h. Then reduce the air temp. in the test chamber to 25℃ ± 2℃ at a rate of 1±0.2K/min. Perform 2 cycles of the above test.

No weather

Low temp.: -10℃;

High temp.: 55℃;

temp. change rate:

1 K/min

Duration: 3h;

Number of cycles: 2

According to test Nb, the air temp.   in the test, the chamber is reduced to -10℃±2℃ at a rate of 1±0.2K/min. After the temp. in the chamber reaches a stable level, the test sample is exposed to this temp. for 3h. Then the air temp. in the test, the chamber is increased to   55℃±2℃ at a rate of 1±0.2K/min. After the temp. in the chamber reaches a   stable level, the test sample is exposed to this temp. for 3h. Then reduce the air temp. in the test chamber to 25℃±2℃ at a rate of 1 ± 0.2K/min.   Perform 2 cycles of the above test.

Weather protection place

Low temp.: -5°C;

High temp.: 45℃;

temp. change rate:

1 K/min

Duration: 3h;

Number of cycles: 2

According to test Nb, the air temp.   in the test, the chamber is reduced to -5℃±2℃ at a rate of 1±0.2 K/min. After the temp. in the chamber is stable, the test sample is exposed to this temp. for   3h. Then the air temp. in the test, the chamber is increased to 45℃±2℃ at a rate of 1±0.2 K/min. After the temp. in the chamber reaches a stable level, the product test sample is exposed to this temp. for 3h. Then reduce the air temp. in the test chamber to 25℃±2℃ at a rate of 1±0.2 K/min. Perform 2 cycles of the above test.

temp.: 40℃±2℃;

Relative humidity: (93±3)%;

Test time: 96h

Put the test sample into the effective space of the test chamber, preheat it first, and raise the temp. to   40℃±2℃ without humidification. When the temp. of the test sample reaches a   stable level, adjust the relative humidity too (93±3)% in the chamber to within 2h; keep for 96h at a temp. of 40℃±2℃ and relative humidity of   (93±3)%, then reduce the relative humidity to 73%~77% within 05h, and then adjust the temp. to room temp. within 0.5h.

Carbon steel

Zn

No white or gray-black, brown   corrosion appear

48h

alloy steel

Zinc chromium coating

No white or gray-black, brown   corrosion appear

96h

Copper and copper alloys

Nichrome

No off-white or green corrosion   appear

96h

Ni

No off-white or green corrosion   appear

48h

Ti

No off-white or green corrosion appear

Ag

No off-white or green corrosion   appear

24h

Aluminum and aluminum alloy

Anodizing

No off-white corrosion appear

48h

According to GB/T 2423.18—2012   severity level (2)

Before the test, check the insulation resistance of the product and perform a functional test according to the regulations. The test sample is put into the salt mist chamber according to the state of use, and it is misted continuously for 2h under the temp. condition of 15℃~35℃. At the end of the misting process, put the equipment under test into a humid chamber with a temp. of 40℃±2℃ and relative humidity of (93±3)% according to the state of use for 20h-22h.   Perform 3 cycles of the above test.

According to GB/T 2423.16-2008 test   method 1, 28d

Select the parts of the equipment as test samples. After the test, the visual inspection shall be carried out   immediately according to the requirements of relevant specifications

Shell

Electrostatic discharge immunity   test

The electrostatic discharge immunity test is carried out according to the method specified in GB/T 17626.2, and the severity level is 4. In the case of interference, the device should function or perform normally within the technical limit during the test period and after the test; if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

Radiofrequency electromagnetic   field radiation immunity test

The radiofrequency electromagnetic field immunity test is carried out according to the method specified in GB/T   17626.3, and the severity level is 3. In the case of interference, the device shall function or perform normally within the limits of the technical requirements during and after the test.

Power frequency magnetic field   immunity test

The power frequency magnetic field immunity test is carried out according to the method specified in GB/T   17626.8, and the severity level is 5. In the case of interference, the device shall function or perform normally within the limits of the technical requirements during and after the test.

Pulse magnetic field immunity test

The pulsed magnetic field immunity test is carried out according to the method specified in GB/T 176269, and the severity level is 5. In the case of interference, the device shall function or perform normally within the limits of the technical requirements during and after the test.

Damped oscillating magnetic field   immunity test

The damped oscillation magnetic field immunity test is carried out according to the method specified in GB/T   17626.10, and the severity level is 5. In the case of interference, the device shall function or perform normally within the limits of the technical requirements during and after the test.

AC power supply

a) Voltage sag immunity test.

The voltage sag immunity test is carried out according to the method specified in GB/T 17626.11, and the severity level is 3. In the case of interference, the device should function or perform normally within the technical limitations during and after the test; if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

b) Electrical fast transient pulse   group immunity test

The electrical fast transient pulse group immunity test is carried out in accordance with the method specified in   GB/T 17626.4, and the severity level is 4. In the case of interference, the device should function or perform normally within the technical limitations during and after the test; if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

c) Surge (impact) immunity test.

The surge (impact) immunity test is carried out according to the method specified in GB/T 17626.5, and the severity level is 4. In the case of interference, the device should function or perform normally within the technical limitations during and after the test; if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

d) Conducted disturbance immunity test   induced by radiofrequency field

The conducted disturbance immunity test induced by the radiofrequency field is carried out according to the method specified in GB/T 17626.6, and the severity level is 3. In the case of   interference, the device shall function or perform normally within the limits   of the technical requirements during and after the test

DC power supply

a) Electrical fast transient pulse group immunity test.

The electrical fast transient pulse group immunity test is carried out in accordance with the method specified in   GB/T 17626.4, and the severity level is 4. In the case of interference, the device should function or perform normally within the technical limitations during and after the test; if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

b) Surge (impact) immunity test.

The surge (impact) immunity test is carried out according to the method specified in GB/T 17626.5, and the severity level is 4. In the case of interference, the device should function or perform normally within the technical limitations during and after the test; if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

c) Conducted disturbance immunity test induced by radiofrequency field.

The conducted disturbance immunity test induced by the radiofrequency field is carried out according to the method specified in GB/T 17626.6, and the severity level is 3. In the case of interference, the device shall function or perform normally within the limits of the technical requirements during and after the test.

I/O signal/control (including the   connection line of the functional ground port)

Immunity Test of Electrical Fast   Transient Pulse Group

The electrical fast transient pulse group immunity test is carried out in accordance with the method specified in GB/T   17626.4, and the severity level is 4. In the case of interference, the device should function or perform normally within the technical limitations during and after the test: if the function or performance is temporarily reduced or lost, it should be able to recover by itself.

b) Conducted disturbance immunity test induced by radiofrequency field.

The conducted disturbance immunity test induced by the radiofrequency field is carried out according to the method specified in GB/T 17626.6, and the severity level is 3. In the case of   interference, the device shall function or perform normally within the limits   of the technical requirements during and after the test

Indoor

IP31

Outdoor

IP54

Temperature: 55℃±2℃;

Cycle times: 2 times (48h)

Carry out according to procedure B,   and cycle twice as shown in Figure 2 (the temperature in the test chamber is raised or lowered at a rate of less than 1K/min), where the irradiance is   1120W/m² (300mm~3000mm), and the radiation should meet the spectral distribution requirements in GB/T 2423.24-2013, t₁=25℃, t₂=55℃.