•  metal oxide surge arrester

metal oxide surge arrester

The metal oxide surge arrester (MOA) type of YH10W-9 is used to protect 9~12kV power system equipment from damage under lightning and switching overvoltage. Please contact us! Email:

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liujing@mec.com.cn
 
The metal oxide surge arrester (MOA) type of YH10W-9 is used to protect 9~12kV power system equipment from damage under lightning and switching overvoltage.
High quality zinc oxide varistors are the main functional part of the arresters, by their excellent voltage-current characteristics, which act as a low resistance to the large discharge currents so as to limit the voltage between the arresters terminals. And as a high resistance at normal power frequency operating voltage so as to limit the magnitude of follow current. The MOA can reliably protect electric apparatus of power system from overvoltage damages, and it may have not any gaps.
 123
1         Technical properties
Table 1
Type
YH10W-9
System voltage                                      kV rms
11
Rated Voltage                                kV rms
9
Maximum Continuous Operating Voltage         kV rms
7
8/20µs lightning impulse maximum residual voltage kVp           
25
30/60µs switching impulse maximum residual voltage kVp
21.5
steep current impulse maximum residual voltage     kVp   
29
Power Frequency Reference Voltage at 1mA (resistive) kV p /√2≥
9
Resistive current at continuous operating voltage     µA≤
200
Standard nominal discharge current               kA
10
Long duration discharge class                        
1
 

Company Profile

We specialize in the production of primary power equipment, including metal oxide surge arrester(MOA), polymer housed metal oxide arrester for transmissionlines, metal oxide varistor,on-line monitors for surge arrester and surge arrester monitor and so on.
After 30years technical innovation and industrial transformation, we have yearly production capacity for 4.5 million pieces ofΦ32-128metal oxide varistor (MOV), 0.5 million sets of 0.22-1000KV metal oxide surge arrester.
Our main products have passed ISO9001 quality management system certificate, ISO14001 environment management system certificate, OHS18001 occupational health and safty management system certificate and KEMA Netherland certificate.
Our arrester market share reaches above 32% in China market, especially 500KV surge arrester bid winning rate in the scale bidding of state grid corporation of China in the lastest three years, was the top one during the same industry in China.
 
 
 

MEC

 

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