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

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ANSI 55-5 Brown Porcelain Pin Insulator

Product Overview

The brown glazed version of the ANSI Class 55-5 pin insulator. Within the ANSI 55 series, Class 55-5 measures 178 mm in diameter and 124 mm high with 305 mm creepage, a 159 mm dry arcing distance and a 152 mm minimum pin height. Cantilever strength is 13.6 kN at 15 kV type application voltage, and the unit weighs about 6.4 kg. The brown glaze is the finish many utilities specify for visual consistency with existing line hardware.

ANSI 55-5

Why Buyers Choose This Part

Brown glaze matching the finish already on most installed line hardware
305 mm creepage, the longest in the 55 series below Class 55-6
13.6 kN cantilever strength at 15 kV application voltage
130 kV positive and 150 kV negative critical impulse flashover margin

Where It Is Used

15 kV distribution lines on ANSI pin construction
Utilities specifying brown glaze for line-hardware consistency
Line refurbishment matching existing 55-5 insulators
Export projects following ANSI classes

Who It Suits

Utilities standardising on ANSI Class 55-5
Line contractors in the Americas and ANSI export markets
Distributors stocking brown glazed pin insulators

What Goes Wrong Without The Right Part

Mixed glaze colours across a line after piecemeal replacement
Creepage shortfalls when a smaller ANSI class is substituted
Cantilever failures from selecting a class by voltage alone
Sourcing brown finish rather than the default white

How It Is Built

ANSI Class 55-5 pin type porcelain
Brown glaze finish
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
115 kV low frequency puncture voltage
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

Brown glazed electrical porcelain

Process

Forming
Brown glazing
Firing
Dimensional inspection
Flashover and cantilever testing

Testing

Cantilever proof test at 13.6 kN
Low frequency puncture test at 115 kV
Glaze colour and finish consistency check

Certification

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

Customisation Options

White or brown glaze as specified
Full ANSI 55 series from 55-1 to 55-6
Project marking on request

How It Compares

ANSI 55-4	The 55-4 is smaller at 142 mm diameter with 229 mm creepage and 13.2 kV application voltage. The 55-5 gives 305 mm creepage at 15 kV for the same 13.6 kN cantilever.
ANSI 55-6	The 55-6 goes to 213 mm diameter, 381 mm creepage and 23 kV application voltage at 8.5 kg. Step up only if the application voltage requires it.