High-Quality ANSI 55-2 Porcelain Pin Type Insulator Manufacturers, Factories

  • ANSI 55-2 Pin Type Ceramic/ Porcelain Insulator with Pin Spindle
  • ANSI 55-2 pin porcelain insulators are mainly used for medium voltage distribution lines.
  • This is an insulator used in medium voltage distribution systems.
  • The applicable rated voltage is usually 15kV and below, widely used in urban and rural overhead distribution lines for supporting and insulating wires on poles.

Product Description

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Dimensional Data

Spacing (S) 3 1/4 inch (83 mm)
Diameter (D) 3 3/4 inch (95 mm)
Leakage Distance (C/D) 5 inch (127 mm)
Dry Arcing Distance 3 3/8 inch (86 mm)
Minimum Pin Height 4 inch (102 mm)
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Mechanical Values

Combined M&E Strength 2,500 lb (11.1 kN)

Electrical Values

LF Dry Flashover Voltage 45 kV
LF Wet Flashover Voltage 25 kV
Critical Impulse Flashover (+) 70 kV
Critical Impulse Flashover (-) 85 kV
Low Frequency Puncture Voltage 70 kV
Type Application Voltage 7.2 kV
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Radio-influence Voltage

RIV Test Voltage RMS to ground
5 kV
Maximum RIV at 1000 kHz
50 μV
Corona Visual Test P/C
18/22 KV
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Packing Information

Approx. Net Weight Per Unit 1.4 kg
Carton Quantity 15
Pallet Quantity 840
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Industry Standard(s)

Manufactured according to ANSI C29.5

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Frequently Asked Questions

What is the standard manufacturing protocol for this product?
This product is strictly manufactured in accordance with the ANSI C29.5 industry standard.
What is the mechanical strength rating?
The combined Mechanical and Electrical (M&E) strength is rated at 2,500 lb (11.1 kN).
What are the leakage and arcing distances?
The leakage distance is 5 inches (127 mm), and the dry arcing distance is 3 3/8 inches (86 mm).
Can this be used for 7.2 kV applications?
Yes, the type application voltage for this unit is specified at 7.2 kV.
What is the weight and bulk packaging info?
Each unit weighs approximately 1.4 kg. They are packed in cartons of 15 units, with a total of 840 units per pallet.
What is the maximum RIV at 1000 kHz?
The maximum Radio-influence Voltage (RIV) at 1000 kHz is 50 μV with a test voltage of 5 kV RMS to ground.

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