•Extreme environmental conditions and high pollution areas such as
desert and coastal regions cause excessive leakage currents. The
surface condition of insulator in such areas will subsequently lead
pollution flashover and power system outages;
•Insulators are just a fraction of the cost of transmission lines
heavily impact the reliability of whole power grids;
•In coastal locations, more than 32.5% of all outages/ failures are
attributed to pollution flashovers;
•Pollution flashover is still a global problem;
Anti pollution flashover coating
1. The packing barrel should be sealed instantly after opening or
using and the coating should avoid prolonged exposure to the air in
order to prevent the coating from curing.
2. The application work should be carried out in good sunny
weather.To guarantee the application quality, application work is
not allowed in rainy, foggy, sandy weather .
3. The insulator surface should be cleaned before coating. Grease,
dust, moisture remains should be strictly eliminated on the
4. Dusty, spalling, peeling coating should be removed on the
original coating when re-coating the insulator that has already
been coated. The original coating which is invalid but with good
adhesion has no necessity to be eliminated. Re-coating work can be
done on it directly and the re-coating quality will not be affected
1. During normal inspection work, if damage caused by mechanical
external force occurs on the surface partly, the coating product
should be reapplied or re-coated on the damage.
2. The hydrophobic property of the coating should be observed in
foggy and dewy weather. If the hydrophobic angle is less than 90º
or the angle disappears and does not recover in 48 hours,
reapplication or re-coating work should be arranged to be done.
Custom-made packing is also served.
1, How long you can guarantee your PRTV coating on ceramic insulators
of substation equipments?
2, How long the client will need to wash their equipment after PRTV
coating in below mentioned areas?
|Area||Estimated time need to wash (year)|
|Heavy Polluted Areas||10-12|
3, If the minimum required thickness of PRTV on ceramic insulators
of high voltage equipments in substations is 500 micron (Dry Film
Thickness - DFT). To reach to this thickness, how much is your
recommended weight for square meter?
4, What is your estimated time to do the PRTV coating of each bay of
substations? ( line bay , transformer bay …)
|Each Bay of Substation|
Estimated time to do
the execution works (Hours)
|How many person you need|
5, What is your estimated area of ceramic surface in square meter
for below mentioned equipments of high voltage substations?
|Each Equipment of Substation|
|63 kV||1.5 kg||6.0 kg||4.7 kg||3.5 kg|
|132 kV||2.4 kg||10.8 kg||8.5 kg||6.0 kg|
|230 kV||5.0 kg||22.5 kg||17.5 kg||12.5 kg|
|400 KV||8.0 kg||36.0 kg||28.0 kg||20.0 kg|