Dow 1547 HVIC

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Description for Dow 1547 HVIC

Gray silicone RTV insulator coating. Imparts arc resistance and hydrophobicity.

Application Type	Pot, Encapsulate
1 Part or 2 Part	1-Part
Material Form	Liquid
Manufacturer	Dow
Chemistry	Silicone
Cure Method	RTV
Cure Time (min)	120 to 360
Arc Resistance (sec)	Arc resistance

Best Practices for Dow 1547 HVIC

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Technical Data for Dow 1547 HVIC

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Overview

Application Type
- Pottant / Encapsulant - Pot, Encapsulate
1 Part or 2 Part
- 1-Part
Material Form
- Liquid
Chemistry
- Silicone
Application Method
- Brush - Dip
- Spray
- Dip
Cure Method
- RTV (Room Temperature Vulcanization) - RTV

Specifications

Cure Specs

Cure Time (min)	120 to 360
Tack Free Time (min)	30	Test Method

Material Resistance

Arc Resistance (sec)	Arc resistance	Test Method

Conductivity

Dissipation Factor	0.10000, 0.06000	Test Method
Dielectric Strength (V/mil)	450 (Volts/mm)	Test Method
Dielectric Constant	3.85, 3.33	Test Method

Other Properties

Specific Gravity	1.160	Test Method
Flash Point (°F)	105.8
% Solids (%)	80

Business Information

Shelf Life Details	When stored at or below 32°C (90°F) this product has a shelf life of 12 months from date of manufacture. Refer to product packaging for “Use By” date.
Shelf Life Type	from date of manufacture
Shelf Life (mon)	12

Best Practices for Dow 1547 HVIC

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1. Surface Preparation
  
  DOW CORNING 1547 HVIC should be applied in several coats over a clean, dry surface. Any surface previously coated with a silicone grease should be cleaned thoroughly before applying the coating.
2. Application
  
  Before use, DOW CORNING 1547 HVIC should be thoroughly agitated on a paint shaker or can roller to ensure uniformity. DOW CORNING 1547 HVIC should be applied in several coats over a clean, dry surface. Any surface previously coated with a silicone grease should be cleaned thoroughly before applying the coating. Surfaces other than glass or porcelain may require use of a primer to ensure adhesion. Consult Dow Corning Technical Service and Development for primer recommendations. DOW CORNING 1547 HVIC Insulator Coating can be reapplied to previously coated surfaces after pressure water washing. The product is normally spray applied, but can be applied by brushing or dipping. An average dry thickness of 20mm (0.020 inch) is recommended on insulators. Several sprayed coats are needed to attain this average. Depending on temperature and humidity, full cure takes 2 to 6 hours. Additional coats can be applied after 20 to 30 minutes. For dilution, a high flash point >38°C (100°F) naphtha spirits solvent is recommended. Acceptable solvents include Kwik Dri Naphtha Spirits 66 from Ashland Chemical and Solvent 360 from Shell Oil. Equipment recommendations can be obtained from Dow Corning.
Comparable Materials for Dow 1547 HVIC

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