Arrester Features

Excellent Protective Performance: The metal oxide varistor have good response to steep front surge, excellent volt-ampere characteristics and high discharge capacity, which provides a very consistent protection merit at steep front surge, lighting surge and switching surge and enhance protective capability. Reliable pressure relief function, the unique pressure relief device worked out upon latest achievements in this field, features precise operation, safely and reliability, which ensure MOA to release internal excessive pressure in any event to minimize fault effect.

Unique sealing device: Excellent MOA to sealing is insured during its service live by weathering proof, thermal-resistant and well elastic sealing gasket and unique sealing device as well as high sensitive leakage detection-helium mass spectrometry.

Our 9 types of surge arresters have passed KEMA type test (YH5W-9/28, YH10W-15/47, YH10W-24/75, YH10W-30/90, YH10W-60/185, Y10W-120/312 CLASS 2, Y10W-60/160 CLASS 3, Y10W-198/485 CLASS 3)

Routine Test Items

The surge arrester according to IEC60099-4 and ANSI standard, also for every piece of arrester, we will perform routine test items specified in IEC as follows:

1. DC Reference voltage test
2. Leakage current test under 0.75
3. Partial discharge test
4. Power frequency withstand voltage test
5. Resistive current test
6. Residual voltage test

Service Condition

1. Ambient temperature -50 C -= 50C
2. Altitude above 1000m
3. Maximum wind velocity 45m/s
4. Earthquake intensity 7 degree 0.3g

Note: We also produce a surge arrester used for heavy pollution area and coastal area when placing orders please specify your required creepage distance ratio and altitude.