Name: DIN 42539 3kV 630A Outdoor Transformer Bushing DT 3/630
Brand: Pingxiang Risheng Electric Porcelain Co., Ltd.

Low Voltage Transformer Bushings production

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DIN 42539 3kV 630A Outdoor Transformer Bushing DT 3/630

Product Overview

An outdoor low voltage transformer bushing to DIN 42539, catalogued as DT 3/630 at 3 kV and 630 A. The published table gives a 45 mm tank hole size, 40 kV BIL, 14 kV power frequency dry and 10 kV wet withstand, 120 mm creepage and an M20 stem connection. Bushings in this range are manufactured to DIN 42530, 42539, 42531, 52432, 42533 and 42534, with metal parts, gaskets and porcelain supplied as a set.

DIN 42530
DIN 42539

Why Buyers Choose This Part

Tank hole size published at 45 mm so the terminal board is checked before order
M20 stem connection stated on the catalogue line
120 mm creepage suited to outdoor low voltage terminals
Made across six DIN bushing standards so one supplier covers the transformer

Where It Is Used

Outdoor low voltage transformer terminals at 3 kV and 630 A
Transformer builds using DIN LV terminal boards
Replacement where tank hole size constrains the choice
Plants standardising across the DIN bushing standards

Who It Suits

Transformer manufacturers building outdoor units
Repair shops matching an existing tank hole
Distributors supplying the DIN 42539 range

What Goes Wrong Without The Right Part

Bushings that will not fit the existing tank hole
Indoor-rated LV bushings fitted on outdoor tanks
Stem connections that do not match the busbar thread
Selecting current ratings across the DIN 42539 family without a table

How It Is Built

DIN 42539 DT 3/630 pattern
3 kV rating at 630 A
45 mm tank hole size
40 kV BIL
14 kV power frequency dry and 10 kV wet withstand voltage
120 mm creepage distance
M20 stem connection
Outdoor transformer bushing construction

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.

Tank Hole Size	45 mm
BIL	40 kV
Creepage Distance	120 mm

Materials

Electrical porcelain
Metal parts and gaskets

Process

Forming
Glazing
Firing
Gasket and metal part assembly
Routine electrical test

Testing

Tank hole and stem thread dimensional check
Power frequency dry and wet withstand testing
Creepage verification against the 120 mm figure

Certification

Manufactured to DIN 42539
ISO 9001 quality management system

Customisation Options

Special lengths and different screw sizes to customer specification
Other DIN 42539 ratings from 3/250 upward
Metal parts, gaskets and porcelain supplied as a set

How It Compares

DT 3/250	The 250 A version uses a smaller 39 mm tank hole and an M12 stem connection at the same 120 mm creepage. Check the tank hole before substituting.
DT 3/1000	The 1000 A version moves to a 56 mm tank hole and 125 mm creepage. Each step in current changes the tank hole, so the terminal board has to match.

Before You Order And After It Arrives

Measure the tank hole and match it against the 45 mm figure
Confirm the M20 stem connection suits your busbar
Order the full set including gaskets when replacing a bushing
Use the outdoor version only, indoor types are a separate construction