Name: 24kV Porcelain Transformer Bushing 150kV BIL
Brand: Pingxiang Risheng Electric Porcelain Co., Ltd.

High Voltage Transformer Bushings production

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24kV Porcelain Transformer Bushing 150kV BIL

Product Overview

A 24 kV outdoor porcelain bushing that carries the high and low voltage leads from inside the transformer tank out to the terminal side. The porcelain shell insulates the lead to ground and mechanically fixes it, so the lead does not move under short-circuit forces. At 453 mm high and 137 mm in diameter it fits the terminal spacing used on medium distribution transformers, and the 150 kV BIL rating leaves margin above the 24 kV class minimum.

Why Buyers Choose This Part

150 kV BIL gives lightning margin above the usual 125 kV figure at this voltage class
60 kV wet power frequency withstand keeps flashover away in rain and coastal damp
Porcelain shell closes the lower end against moisture and dirt ingress into the tank
8 kg unit weight keeps terminal board loading low on pole and pad mounted units

Where It Is Used

24 kV oil-immersed distribution transformers on pole and pad mounted installations
Replacement of cracked or flashed bushings during substation overhaul
Transformer assembly lines that need a stocked 24 kV terminal part
Repair shops rewinding units where the original bushing is no longer available

Who It Suits

Distribution transformer manufacturers building 24 kV oil-filled units
Utility maintenance departments holding spares for field replacement
Transformer repair and rewinding workshops

What Goes Wrong Without The Right Part

Bushings that track and flash over after a few wet seasons in polluted air
Terminal leads that shift under fault current because the bushing does not clamp them
Moisture creeping into the tank past a poorly sealed lower end
Long lead times on 24 kV replacement parts that hold up a transformer overhaul

How It Is Built

Single-piece glazed porcelain shell with the lower end protected against permeation
Rated 24 kV with 150 kV basic insulation level
60 kV wet power frequency withstand voltage
453 mm overall height, 137 mm maximum diameter
8 kg net weight per bushing

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.

Wet Power Frequency Withstand Voltage	60 kV
Net Weight Per Bushing	8 kg
Height	453 mm
Diameter	137 mm
Rated Voltage	24 kV
BIL	150 kV

Materials

Electrical porcelain shell
Copper or aluminium alloy conductor

Process

Body forming
Glazing
Firing
Metal fitting assembly
Routine electrical test

Testing

Visual and glaze inspection on every shell before assembly
Power frequency withstand test at 60 kV wet
Dimensional check against the 453 mm by 137 mm envelope

Certification

ISO 9001 quality management system

Customisation Options

Manufactured to customer drawings or samples
OEM and ODM marking accepted
Standard export packing or packing to your specification

How It Compares

Resin cast bushing	Porcelain holds its surface in UV and heat where cast resin chalks and tracks, which matters on outdoor tanks that sit in sun all year.
24 kV bushings rated 125 kV BIL	The 150 kV BIL rating gives extra lightning margin on overhead-fed networks without changing the mounting envelope.

Before You Order And After It Arrives

Check the terminal board hole against the 137 mm body diameter before ordering
Handle by the porcelain body, never by the conductor stem
Clean the glaze with a soft cloth before energising, no abrasive pads
Torque the lower clamp evenly so the porcelain is not loaded on one side