Name: ANSI Class 55-5 Pin Porcelain Insulator 15kV
Brand: Pingxiang Risheng Electric Porcelain Co., Ltd.

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ANSI Class 55-5 Pin Porcelain Insulator 15kV

Product Overview

ANSI Class 55-5 pin porcelain insulator, the 15 kV application voltage member of the ANSI 55 series. It measures 178 mm in diameter and 124 mm high, with 305 mm creepage, a 159 mm dry arcing distance and a minimum pin height of 152 mm. Cantilever strength is 13.6 kN, low frequency dry flashover is 80 kV and puncture voltage is 115 kV, at about 6.4 kg per unit.

Why Buyers Choose This Part

305 mm creepage with a 159 mm dry arcing distance at 15 kV
13.6 kN cantilever strength for angle and terminal positions
130 kV positive and 150 kV negative critical impulse flashover
Supplied from a factory that runs the whole 55-1 to 55-6 series

Where It Is Used

15 kV distribution lines on ANSI pin construction
Feeder rebuilds matching installed ANSI 55-5 hardware
Export projects specified against the ANSI 55 series
Stock holding across several classes of the same series

Who It Suits

Utilities operating 15 kV ANSI-specified distribution
Line contractors in the Americas and ANSI export markets
Distributors supplying the full ANSI 55 range

What Goes Wrong Without The Right Part

Class substitutions that cut creepage from 305 mm to 229 mm unnoticed
Pin heights below the 152 mm the class requires
Multiple suppliers needed to cover one ANSI series
Flashover on lines where the application voltage was misjudged

How It Is Built

ANSI Class 55-5
178 mm diameter and 124 mm height
305 mm creepage distance
159 mm dry arcing distance
152 mm minimum pin height
13.6 kN cantilever strength
15 kV type application voltage
80 kV low frequency dry and 45 kV wet flashover voltage
130 kV positive and 150 kV negative critical impulse flashover voltage
115 kV low frequency puncture voltage
Maximum RIV 50 µV at 1000 kHz tested at 10 kV RMS to ground
6.4 kg approximate net weight

Published Figures For This Product

Every value below comes from the manufacturer data for this item. Figures not listed are confirmed against the drawing before an order is placed.

Creepage Distance	305 mm
Dry Arcing Distance	159 mm
Minimum Pin Height	152 mm
Cantilever Strength	13.6 kN
Type Application Voltage	15 kV
Low Frequency Puncture Voltage	115 kV
Approximate Net Weight	6.4 kg

Materials

Electrical porcelain body

Process

Forming
Glazing
Firing
Dimensional inspection
Flashover, puncture and RIV testing

Testing

Cantilever proof test at 13.6 kN
Low frequency puncture test at 115 kV
Dry and wet flashover verification at 80 kV and 45 kV

Certification

Built to ANSI Class 55-5
ISO 9001 quality management system

Customisation Options

White or brown glaze
All classes from 55-1 through 55-6
Project marking on request

How It Compares

ANSI 55-6	The 55-6 reaches 23 kV application voltage with 381 mm creepage at 8.5 kg. Use it only when the line runs above 15 kV application.
ANSI 55-4	The 55-4 covers 13.2 kV with 229 mm creepage at 3.7 kg, a noticeably lighter unit for lower voltage feeders.