Room Temperature Vulcanized PRTV RTV Silicone Coatings For Ceramic Insulators

Certification:Type test reports, SGS test report,5000 hour aging test report

Room Temperature Vulcanized PRTV RTV Silicone Coatings For Ceramic Insulators

Technical Spefications:

No.	properties	Test Method	unit	Minimum requirement	Guaranteed Value
1	Solid content	DLT627-2012		≥%30	51
2	Solid volume	IEC		≥%40	/
3	Shelf life	--	Month	12	12 Months
4	Tack free time		Minute	45	25 Minutes
5	Viscosity	DLT627-2012		500cp…..3000cp	/
6	Specific gravity	DLT627-2012		0.5g/cm³….2g/cm³	0.92-1.42 g/cm3
7	Flash point	DLT627-2012		30°C…………45°c	35 °c
8	Skin-over time at 23°c	DLT627-2012		9min….40min	20 min
9	Water replellence	DLT627-2012		105°C…..130°C	113.8°
10	Arc resistance	DLT627-2012		180s ≥	191s
11	Volume resistivity	DLT627-2012		1.2*10¹²	6.05*1013
12	Application temp range	DLT627-2012		-10°c…….+60°C	-50-200°C
13	Colour material	--		grey	GREY
14	Dielectric constant at 50 HZ	DLT627-2012		≤3	2.0-2.1
15	Dissipation factor at 50 HZ	DLT627-2012		≤0.4	0.2-0.23
16	Contamination flashover resistance	DLT627-2012		U1(coated)/ U2(un coated) ≥1.5	2.03
17	Adhesion Ability Test	IEEE std 1523		Pass	PASS
18	Salt fog test	DLT627-2012	h	1000H	5000H
19	Tensile strength	DLT627-2012	N/mm²	3	4.24 N/mm2
20	Tear strength	DLT627-2012	N/mm	9	10.2 N/mm

No.	Subject	Guaranteed Value
1	Solid Content by Weight	51
2	Solid Content by Volume	/
3	Density -Uncured	0.92
4	Density Cured	1.42

Question and answers:

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

    Answer : 15 years

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

   Answer:

Polluted Areas	Estimated time need to wash again after using our RTV / PRTV products (years)
Cement Factories	10-12
Petrochemical Plants	12-13
Heavy Polluted Areas	12-13
Polluted Areas	15

3, If he 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

each square meter?

  Answer:1.4 kg/m2

4, What is your estimated time to do the PRTV coating of each bay of substations? ( line bay , transformer bay …)

 Answer:

Each Bay of Substation	Estimated time to do the execution works (Hours)	How many person you need
63 kV	8	3
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