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RTV silicone rubber insulator coating/paint Solution to Anti Flashover Repairing Ageing Damage HVIC

This product is designed for power transmission and distribution system anti-pollution flashover, has following marked characteristics:

Excellent hydrophobicity and rapid, balanced and continuous hydrophobic mobility. 

Anti-pollution flashover voltage is high, anti-electric arc, proof tracking, good electrical insulation properties.

High modulus, high strength, high adhesion, high corrosion resistance, and meet the requirement of condition based maintenance.

Ozone resistance, ultraviolet resistance, environment aging resistance, no peeling, no cracking.

The effective running time is long, simple maintenance, exempt cleaning within validity period, high efficiency.

Availability:
Quantity:
  • rtv-2

  • customized

This product is designed for power transmission and distribution system anti-pollution flashover, has following marked characteristics:

Excellent hydrophobicity and rapid, balanced and continuous hydrophobic mobility. 

Anti-pollution flashover voltage is high, anti-electric arc, proof tracking, good electrical insulation properties.

High modulus, high strength, high adhesion, high corrosion resistance, and meet the requirement of condition based maintenance.

Ozone resistance, ultraviolet resistance, environment aging resistance, no peeling, no cracking.

The effective running time is long, simple maintenance, exempt cleaning within validity period, high efficiency.

III.Range of Application

This product is suitable at the ambient temperature - 50 ºC ~ 100 ºC, various voltage levels, DC, AC systems under filthy condition. It mainly used in power system transformer substation, transmission line insulator and power plants booster stations, as well as chemical industry, steel, electric railways, mines and all electrical equipments in the filthy environment, fog and moist, to improve equipment external insulation level and avoid flashover accidents.

Products are widely used in metallurgy, cement, chemical, mining, salt mist and various sorts of pollution environment, 500kv and above equipments used widely. Since operation, there is no flashover accidents occurrence; it is the patron saint for power grid safety and reliable operation.

IV.Method of Use

We suggest cut off the power sprayed by the qualified workers when it is working.

It should be applied over a clean and dry surface. Before using, the surface of insulators should be cleaned and dry normally in order to remove dusts, wax and grease etc.

Construction should be applied with spraying or brushing methods in good weather.

Coating thickness is not less than 0.3 mm, it should be complete, no defects, no dripping.

V.Packaging and Storage

This product is available in sealed metal container. When stored and transport at dry and ventilated conditions, far away from sunshine and rain.

The storage time is 6 months, if exceed time, it can use after recheck and approval.


Technical Date Sheet

ItemDL/T627 technical requirementsTypical test valuesTest methods
Visual inspectionUnifom colour viscous liquid,Unifom colour viscous liquid, no obvious mechanical impurities anrl flGB/T1721-2008
no obvious mechanical impurities and floc
Curing timemin Dry≤45min29GB/T6753. 2-1986
KM/m Dielectric strength≥2021.6GB/T1408. 1-2006
Ω.m Volume resistivity≥1xlO122.93x1012GB/T1692-2008
Tensile strength and Tensile elongationMpa strength≥3.04.176GB/T528-2009
% Elongation≥350%384%
KN/m Tear strength test≥1216.4GB/T529-2008
Flame retardantFV-1FV-0GB/T10707-2008
Relative permittivity Dielectric loss tangent≤3.02.7GB/T1409-2006
≤0.3%0.29%
Resistance to tracking and erosion of electricalTMA 4. 5IA 4. 5GB/T6553-2003
AdhesionBonding shear strength Mpa≥3.03. 64GB/T13936-1992
Fones method levelHigher than grade 2Grade 1GB/T1720-1989
Hydrophobic testHydrophobic and classificationɵav≥1000 ɵmin≥900HC1DL/T864
HC1-HC2
Weakening characteristic 96hɵav≥900 ɵmin≥850HC2
HC3-HC4
Recovery characteristicst≤24hHC1
Hydrophobic properties migration 96hɵav≥llO° ɵmin^lOO0HC1
HC2~HC3
Wear g≤0.5g0.145gDL/T627-2012
CorrosionAcid, alkali, salt,NoNoGB/T1763-1989
80°C for 24hwrinkle,peeling, blister, discolorationg,adhesionwrinkle, peeling,blis ter,discoloration, ad hesion Not less than 1

Not less than 2
Transfomer oilNoNoGB/T1739-1989
105°C for 24hwrinkle, peeling, blister, discolorationg,adhesion Not less than 2wrinkle, peeling,blister, discoloration, adhesion Not less than 1
Flash over voltage engineeringWet flash over voltageA coating insulation to relatively no coating insulation shall not be lowerWith coating 61.kvGB/T775-1987
without coating 57kv
Pollution flashover testU1/U2 >2.0U1/U2=2.1GB/T4585.1-1984


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