530KN normal type High Voltage Porcelain Insulators grey color for
750kV transmission lines
Technical Specifications of IEC standard ceramic disc insulator
U530B with zinc sleeve for 750kV transmission line
| ||Technical Specification||Unit||Value|
|4||Coupling Size|| ||32|
|5||Rated M&E Strength||KN||530|
|7||Power Frequency Withstand Voltage|| || |
|8||Lightning Impulse Withstand Voltage|| || |
|10||RIV test Voltage to the Ground||KV||10|
| ||Max RIV at 1 MHz||μV||50|
HIVOLT ceramic disc insulators use below materials for parts :
1 the insulator cap are high density ductile iron ,we test each
pieces with magnetic powder inspection method . all the insulator
pins made of forged steel with diameter 32mm .
metal fittings surface hop-dip galvanized , coating thickness meet
2 ceramic shell are made of high aluminum porcelain C130 . the
porcelain surface covered a layer of shinning glaze , color can be
grey , brown or white , it depends on customer's requirement.
3 we tested every unit of insulators by routine test , it including
a) routine tension load strength test , which will apply 50% of
rate mechanical strength
withstand 1 minutes .
b) routine flashover test , will check every piece of insulators
with high voltage flashover,
to sort defect unit out.
4 we will test each batch of insulators by sample test , which
insulator visual check ,overall dimensional check , temperature
cycle test , mechanical and electrical failing load test , puncture
test , metal fitting zinc thickness thickness test etc.
the U530B product are Suitable for tension string or suspension
string in power lines 500KV, 750KV and 1000kV etc. this type of
product are in huge quantity used and accepted by National Utility
U530B ceramic disc insulator has perfect mechanical &
electrical character , so we can offer 2 years quality guarantee
period . after several years running , the data shown the insulator
failure rate are less than 1 per 100000 .
we also guarantee every units of insulators are well tested and
without any defect before ship out of factory .