This device is designed and made according to the demand of the standards of IEC60112:2003, UL746A, ASTM D 3638-92 and DIN53480, etc. It is suitable for method for the determination of the proof and comparative tracking indices of solid insulating materials under the conditions of moist. It has the advantages of simple and convenient, accurate, reliable as well as practical.
This equipment has two types. One is button type and another is touch screen type. The latter type adopts 7-inch PLC touch screen, specialized software to control and is equipped with remote controller.
Parameter:
1. Size of electrode: 5mm±0.1mm*2mm±0.1mm, one end edge of the electrode is cut to a slope with 30 degree angle
2. Electrode material: Copper and platinum(platinum length ≥ 12mm, purity ≥ 99%)
3. The distance between electrodes: 4.0mm±0.1mm
4. Acting force on the sample by each electrode: 1.0N ± 0.05N
5. specimen size ≥ 15*15mm, thickness ≥ 3mm
6. Applied Voltage: can be adjusted between 100~600V(48~60Hz), voltage drops less than 10% when the short-circuit current is 1.0 ± 0.1A
7. Circuits judgment: when short-circuit current is more than 0.5A and keeping 2 seconds, the relay acts, rupturing the current, indicating the  sample is unqualified
8. Interval of drop dripping: 30s ± 5s
9. Height from drop head to sample surface: 30~40mm
10. Dropping is controlled by solenoid valve, drop size: (20+30) mm³, 50 drops is (0.997~1.147g), 20 drops is (0.380-0.480g)
11. Drop deice: need to be adjusted before test
12. Out diameter of syringe needle: 0.9~1.1mm
13. Internal volume of chamber: 0.5m3 (0.75m3 or 1m3 optional)
14. Overall dimension(L*W*H): 1170*630*1330mm
15. Chamber material: sprayed iron plate
16. Air vent: Φ100mm
17. Working power supply: 220V, 10A, 50Hz