1.2kV 400A Screw Thread Transformer Bushing

• Home
• Products
• Screw Thread Transformer Bushings
• 1.2kV 400A Screw Thread Transformer Bushing

Product Overview

A 1.2 kV low voltage screw thread transformer bushing rated 400 A, sitting within the ANSI low voltage bushing family that runs from 125 A to 1250 A. Bushings in this family are assembled from wet process porcelain with NBR gaskets, a copper threaded rod, a blued steel spin grip nut, a zinc-plated brass connector and stainless steel lock washer and nut, in light grey glaze.

Why Buyers Choose This Part

• 400 A rating within a family that spans 125 A to 1250 A
• Threaded rod connection with eyebolt or flat connector options
• Complete hardware set including NBR gaskets and stainless fasteners
• Wet process porcelain in a light grey glaze

Where It Is Used

• 1.2 kV low voltage transformer terminals at 400 A
• ANSI pattern LV terminal boards on distribution transformers
• Replacement where the full hardware set is needed
• Transformer builds covering several LV current ratings

Who It Suits

• Distribution transformer manufacturers working to ANSI
• Transformer repair workshops
• Distributors supplying ANSI LV bushings

What Goes Wrong Without The Right Part

• LV bushings delivered without gaskets or connector hardware
• Connector types that do not suit the cable termination
• Galvanic problems from mismatched fastener metals
• Sourcing an intermediate current rating between catalogue points

How It Is Built

• 1.2 kV at 400 A
• Screw thread transformer bushing construction
• Wet process porcelain insulator
• Light grey glaze colour
• NBR gaskets, copper threaded rod, blued steel spin grip nut
• Zinc-plated brass connector, stainless steel lock washer and nut
• ANSI standard family

Materials

• Wet process porcelain
• Copper threaded rod
• NBR gaskets
• Zinc-plated brass connector
• Stainless steel washer and nut

Process

• Forming
• Glazing
• Firing
• Rod machining
• Hardware assembly
• Routine electrical test

Testing

• Thread gauge check on the copper rod
• Gasket seating inspection
• Glaze colour consistency check

Certification

• ANSI standard family
• ISO 9001 quality management system

Customisation Options

• Connector size and type selected from the published table
• Current ratings from 125 A to 1250 A
• Customers' own designs accepted

How It Compares

1.2 kV 800A ANSI bushing	The 800 A version uses a 1 inch connector against the smaller hardware at 400 A. Match the connector to the cable termination.
DIN 42530 low voltage bushings	DIN uses metric stem threads from M12 to M48. The ANSI family uses imperial threaded rods with eyebolt and flat connectors.

Before You Order And After It Arrives

• Specify the connector size and type with the order
• Replace NBR gaskets whenever the bushing is removed
• Tighten against the washer, never against the porcelain
• Confirm the exact dimensional figures before a first order

1.2kV 400A Screw Thread Transformer Bushing Questions

Related Products

Screw Thread Transformer Bushings

ANSI 15kV Transformer Porcelain Bushing

Screw Thread Transformer Bushings

• Rated Transformer Bushing 15 kV

Threaded ANSI 18kV Transformer Bushing ANSI-18/50

High Voltage Transformer Bushings

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

18kV 25A HV ANSI Transformer Bushing

Screw Thread Transformer Bushings

• Creep Distance 480 mm
• Weight 3.5 kg

Threaded 1kV LV ANSI Transformer Bushing 30kV BIL

• Rated Voltage 1 kV
• BIL 30 kV

Related Cases Guides And Applications

DIN EN And ANSI Transformer Bushing Standards Explained

Transformer Bushing Selection A Guide For Engineers

What Is A High Voltage Transformer Insulator

Distribution Transformer Manufacturers

Power Utilities And Substations

Manufacturing To Your Drawing Or Sample

Selecting Creepage For The Pollution At Your Site

Quote For 1.2kV 400A Screw Thread Transformer Bushing

Send the quantity and any drawing you have. Enquiries are answered within 24 hours, and we produce to customer drawings and samples.