The relative trace resistance of solid electrical insulation materials when exposed to impurity-containing water under an electric field is measured at voltages up to 600 V. When a voltage is applied between the specified electrode devices placed on the surface of the material, and the electrolyte drips between the two electrodes at specified intervals, trace printing may occur in this test case. The number of droplets necessary to cause material failure increases with the decrease of the applied voltage, and no trace occurs below a certain limit. When the material is not traced at the highest test voltage, there can be different degrees of corrosion, and the corrosion depth can be measured. Some materials can burn during testing. 【Relevant Standards】

1. Design standard GB/T4207-2003 Determination method of electric trace index and trace resistance index of solid insulation materials under wet conditions 2. Standards IEC60695 apply

【Scope of application】： The relative trace resistance of solid electrical insulation materials when exposed to impurity-containing water under an electric field is measured at voltages up to 600 V. When a voltage is applied between the specified electrode devices placed on the surface of the material, and the electrolyte drips between the two electrodes at specified intervals, trace printing may occur in this test case. The number of droplets necessary to cause material failure increases with the decrease of the applied voltage, and no trace occurs below a certain limit. When the material is not traced at the highest test voltage, there can be different degrees of corrosion, and the corrosion depth can be measured. Some materials can burn during testing. [Meet the standard]:                                     1. Design standard GB/T4207-2003 Determination method of electric trace index and trace resistance index of solid insulation materials under wet conditions 2. Applicable standard IEC60695 [Instrument features]:    1. Programmable controller touch screen + PLC control 2. The dripping is controlled by the stepper motor to prevent dripping 3. Voltage, start and discharge, switching, current, stop, exhaust, and lighting are all realized on the touch screen, and the test data can be stored in the touch screen, and the save interface will automatically jump out of the save interface at the end of the test, fill in the save name to save the data, and all the saved data can be queried in the historical data 4. Voltage size, dripping time, current size, number of drops, equipment door status, maximum current, and experimental results are displayed in real time 5. Seven-inch full-color touch screen 6. The top is equipped with a silent and anti-backflow exhaust device, which can discharge the flue gas generated by combustion after the test 7. Set the test voltage value directly 8. The number of drops and the time can be set 9. Automatically judge whether the test is qualified 10. Current overload protection 11. Safety protection: automatic prompt door status; And there is no voltage in the test area when the door is open. 12. Indicate the peak current value  【Technical Parameters】: 1. Electrode material: test electrode – tungsten steel, electrode adapter – stainless steel (upgradeable platinum electrode, please contact sales) 2. Electrode Size :( 2mm ± 0.1mm )× (5mm ± 0.1mm )× (40mm ± 5mm ) 3. Surface platinum plated electrode 12mm, 30°±2° bevel 4. Electrode distance: 4.0mm ± 0.01mm, angle 60°±5° 5. Electrode pressure: 1.00N±0.01N 6. Test liquid resistance: Solution A 0.1% NH4Cl, 3.95±0.05Ωm; B liquid 1.98±0.05Ωm 7. Dripping device: no need to adjust during the test, simple to operate 8. Droplet height: 35mm ± 5mm (adjustable) 9. Drop time: 30s±0.01s (better than standard) (preset and adjustable) 50 drops time 24.5min±2min Droplet Count: 1 ~ 9999 (Preset) (Droplet size can be adjusted to make the capacity of 44-55 drops 1cm³) 10. Test wind speed: 0.2m/s (new standard) 11. Test voltage: 100V ~ 600V (25V index, adjustable) 12. Power supply voltage drop: 1.0A ± 8% at 0.1A 13. Scratch Judgment : 0.50A ±10% , 2.00s±10% 14. The applied voltage is adjustable between 100~600V (48~60Hz), and the voltage drop does not exceed 10% when the short-circuit current is 1.0±0.0001A (better than the standard 0.1A); 15. Exhaust hole: Ø100mm 16. Air environment: temperature 0~40°C Relative humidity: ≤80% A place without obvious vibration and corrosive gases 17. When the short-circuit current is greater than 0.5A in the test loop, the relay operation is maintained for 2 seconds, and the current is cut off, indicating that the test product is unqualified; 18. Test power supply: 220V 0.6kVA 50-60Hz 19. Dimensions: width 1160mm× depth 600mm× height 1310 mm (including feet). 20. Volume of combustion test area: >0.5 cubic meters, length*width*height about 900mm×590mm×1050mm, background black, background illuminance ≤ 20Lux 【Installation condition table】：Users bring their own 1. Space requirements: a. Overall dimensions: width 1160mm× depth 600mm× height 1310 mm (including feet). b. Weight (KG): about 80 c. Test bench: a workbench with a length of not less than 1 meter and a width of not less than 0.75 meters 2. Power requirements: a. Voltage: 220V±10%, 50HZ, 0.6kVA b. Power: 150W 3. Water source: none 4. Air source: none 5. Pollutant description: soot 6. Ventilation requirements: The smoke exhaust pipe of the equipment needs to be connected out or connected to the smoke treatment and purification system 7. Other tests required: none