Source manufacturers-Metal-oxide surge arrester
Metal-oxide surge arrester introduction:
Polymer-housed metal oxide surge arrester is a scientific
achievement combining the advantages of organic insulation
materials and porcelain-housed arrester technologies. Therefore, Metal-oxide surge arrester not only has the advantages of porcelain-housed arrester, but also
has other advantages, such as good electrical performance, strong
dielectric strength, tracking resistance, high- and low-temperature
resistance, aging resistance, sandstorm resistance, explosion-proof
performance, sound chemical stability, and hydrophobicity. The
housing is made of high-quality silicone rubber, and formed by one
step with integral moulding and curing process, with high sealing
performance and long service life. The polymer-housed arrester is
designed and manufactured in strict accordance with GB 11032 and
takes a leading position in the similar products in China. Featured
by reliable protection performance and stable operation, the
polymer-housed arrester is widely used in the major projects of
State Grid Corporation of China (SGCC) and China Southern Power
Grid Company Limited (CSG), including the following SGCC's
projects: 1,000kV UHV Southeast Shanxi Substation of 1,000kV
Southeast Shanxi - Nanyang - Jingmen UHVAC Pilot Demonstration
Project, Extension Works of 1,000kV Nanyang Switching Station of
1,000kV Southeast Shanxi - Nanyang - Jingmen UHV AC Pilot
Demonstration Project, South Hami Converter Station of ±800kV Hami-
Zhengzhou UHVDC Electricity Transmission Project, 750kV East
Lanzhou Station, 500kV Beijing Shunyi Substation, 750kV Gansu
Baiyin Substation, 750kV Shaanxi Baoji Substation, 750kV Shazhou
Substation, 750kV Qinghai Qaidam Substation and 500kV Baoji -
Deyang DC Electricity Transmission Project, as well as DC De-icing
Project of 500kV Hechi Substation of CSG EHV Power Transmission
Company, DC De-icing Project of 500kV Anshun Substation of Guizhou
Power Grid Company and 330kV Sanxing Substation in Xi'an High-tech
Zone.
Normal service conditions of metal-oxide surge arrester:
1.For indoors and outdoors;
2.Ambient air temperature within the range of-40℃~+40℃;
3.Altitude not exceeding 2600m;
4.Frequency for A.C.power supply not less than 48Hz and not
exceeding 62HZ;
5.Power Frequency voltage applied continuously between the
terminals of the arrester not exceeding its continuous operating
voltage;
6.Earthquake intensity:8 degree and below;
10.Maximal wind velocity not exceeding 35m/s. Please indicate in
the contract,at exceptionally movement condition.
Advantage of metal-oxide surge arrester:
1.Metal-oxide surge arrester have low partial discharge;
2.Metal-oxide surge arrester have low residual voltage;
3.Metal-oxide surge arrester have high dielectric insulation level;
4.Tolerance to high/low temperature;
5.Explosion-proof;
6.Anti-corrosion;
7.Anti-aging;
8. Shorter lead time (Ex-work 1 week+).
Technical parameters:
Metal-oxide surge arrester-Aapless MOA for Distribution
Below info. only for your reference, all data shall be specified
and determined by technical specification and customer demand.
Technical Parameta /Product type | Nominal voltage of system | Rated voltage kV.m | Continuou operation voltage | Reference voltage at D.C.1mA kV.pc | Nomina discharge current kA .peak | Lightning 1mpulse | Steeping mpulse | Switching impulse | Parachute diameter φ mm | Height H mm | Fig No |
| YH5WS-5/15 | 3 | 5 | 4.0 | 7.5 | 5 | 15.0 | 17.3 | 12.8 | 76 | 200 | 1 |
| YH5WS-10/30 | 6 | 10 | 8.0 | 15.0 | 5 | 30.0 | 34.6 | 25.6 | 76 | 200 | 1 |
| YH5WS-12/35.8 | 10 | 12 | 9.6 | 18.0 | 5 | 35.8 | 41.2 | 30.6 | 76 | 255 | 1 |
| YH5WS-15/45.6 | 10 | 15 | 12.0 | 23.0 | 5 | 45.6 | 52.5 | 39.0 | 76 | 255 | 1 |
| YH5WS-17/50 | 10 | 17 | 13.6 | 25.0 | 5 | 50.0 | 57.5 | 42.5 | 76 | 255 | 1 |
The structure and installtion dimensional drawing:
