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RTV PRTV silicon coating silicon rubber coating for pollution flashover for disc insulators

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China Kayi Industrial Co., Ltd.
Province/State: Jiangsu
Country/Region: China
Tel: 86-755-26927358
Contact Person:
Mr Warren

RTV PRTV silicon coating silicon rubber coating for pollution flashover for disc insulators

Brand Name : KANGDAWEI
Model Number : 985-KDW
Place of Origin : CHINA LIYANG
MOQ : 1 kg
Price : 25-50 USD PER KG
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability : 300 metric tons per month
Delivery Time : 1-10 days
Packaging Details : can, bucket
Name : RTV \ PRTV
Type : KDW-985
Material : Silicon rubber
Application : Substation and transmission lines
Life span : 15 years
Color : Grey red etc
Cure time : 30 minutes
Thickness : 50 micron meters
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•Extreme environmental conditions and high pollution areas such as industrial,

desert and coastal regions cause excessive leakage currents. The surface condition of insulator in such areas will subsequently lead to a

pollution flashover and power system outages;

•Insulators are just a fraction of the cost of transmission lines but

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

Ⅵ. Notes

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 insulator surface.

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 basically.

Ⅶ.Daily maintenance

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.

Packing size:

5kilograms/metal pail

10kilograms/metal pail

Custom-made packing is also served.


1, How long you can guarantee your PRTV coating on ceramic insulators of substation equipments?

15 years

2, How long the client will need to wash their equipment after PRTV coating in below mentioned areas?

AreaEstimated time need to wash (year)
Cement Factories10
Petrochemical Plants10-12
Heavy Polluted Areas10-12
Polluted Areas15

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?

1.4 kg/m2

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
63 kV83
132 kV84
230 kV85
400 KV88

5, What is your estimated area of ceramic surface in square meter for below mentioned equipments of high voltage substations?

One Piece.

Each Equipment of Substation




Voltage Transformer


Current Transformer


Surge Arrester


63 kV1.5 kg6.0 kg4.7 kg3.5 kg
132 kV2.4 kg10.8 kg8.5 kg6.0 kg
230 kV5.0 kg22.5 kg17.5 kg12.5 kg
400 KV8.0 kg36.0 kg28.0 kg20.0 kg

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