Name: Threaded ANSI 18kV Transformer Bushing ANSI-18/50
Brand: Pingxiang Risheng Electric Porcelain Co., Ltd.

Screw Thread Transformer Bushings production

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Threaded ANSI 18kV Transformer Bushing ANSI-18/50

Product Overview

A threaded ANSI transformer bushing in the ANSI-18/50 model, 541 mm in overall height with an h2 of 184 mm, a d1 of 101 mm and an h1 of 214 mm. Arcing distance is 480 mm across 8 single umbrella sheds and the unit weighs 3.5 kg. It meets ANSI standards for electrical and mechanical performance and uses a streamlined design that reduces flashover likelihood and improves heat dissipation.

Why Buyers Choose This Part

480 mm arcing distance across 8 single umbrella sheds
3.5 kg unit weight on a 541 mm tall body
Meets ANSI standards for electrical and mechanical performance
Streamlined design that cuts flashover risk and helps heat dissipate

Where It Is Used

18 kV class transformers on ANSI terminal patterns
Power transformers and switchgear needing an ANSI interface
Outdoor installations in harsh environments
Projects selecting between ANSI-15/50, 18/50 and 27/50 models

Who It Suits

Transformer manufacturers building to ANSI
Switchgear builders needing an ANSI bushing interface
Distributors supplying the ANSI threaded bushing range

What Goes Wrong Without The Right Part

Arcing distance too short for the 18 kV class
Heat build-up at the terminal under sustained load
Flashover on bushings with shed profiles that collect dirt
Selecting between three ANSI models without dimensional data

How It Is Built

ANSI-18/50 model
541 mm overall height H
184 mm h2, 101 mm d1, 214 mm h1
480 mm creep distance
8 single umbrella sheds
3.5 kg weight
Threaded terminal arrangement
Meets ANSI standards for electrical and mechanical performance

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.

Overall Height H	541 mm
Creep Distance	480 mm
Weight	3.5 kg

Materials

High-quality electrical porcelain
Threaded conductor

Process

Forming
Glazing
Firing
Thread machining and assembly
Electrical and mechanical testing

Testing

Dimensional check against the ANSI-18/50 model figures
Electrical performance testing to ANSI requirements
Thread gauge check on the terminal

Certification

Meets ANSI standards for electrical and mechanical performance
ISO 9001 quality management system

Customisation Options

ANSI-15/50 and ANSI-27/50 models also available
Thread size cut to your terminal specification
OEM and ODM supply

How It Compares

ANSI-15/50	The 15/50 is 485 mm tall with a 310 mm creep distance across 5 sheds at 2.8 kg. The 18/50 adds height, three more sheds and 170 mm of creepage.
ANSI-27/50	The 27/50 goes to 722 mm height with 830 mm creep distance across 12 sheds at 5 kg, for the higher voltage class.

Before You Order And After It Arrives

Check the 541 mm height clears the tank structure
Match the thread size to your terminal stud
Compare creep distance across the three models before selecting
Keep the umbrella sheds clean to preserve the flashover margin