NTB Series

Product Description

Secondary bushings are designed for external mounting on distribution transformers filled with transformer oil, Envirotemp™ FR3™ fluid, or an approved equivalent and are available with either spade or stud connections.
They are designed for use indoors or inside cubicles of fluid-filled transformers or switchgear.

Technical Specification

Rated voltage

1.2kV

Product Type Number

NTB106

,

NTB115

Product Category

LV bushing

Technical Specification

Special Description:

  • Compliant with IEEE C57.19.01-2017 standard.
  • Internal spade/externally threaded stud molded secondary pad mount bushings are available with 5/8” and 1” diameter copper studs.
  • Molded with high temperature nylon (HTN) with exceptional mechanical and electrical stability over a wide range of temperature, humidity, and environmental extremes.
  • Exhibits good flexibility, allowing it to conform to the tank wall during internal pressure changes.

Table 1 - Electrical Data

Voltage Ratings1.2kV Class
Withstand Voltage
AC: 60Hz , 60 sec10kV
Impulse Voltage Withstand
BIL and Full Wave Crest30kV
Threaded Stud5/8"1"
Continuous Current600Amp1,500Amp
Type NumberNTB106NTB115

Table 2 – Standard accessory attachment pack Information

Type NumberAccessoryQty

NTB106

NTB115

Oil Resistant Gasket1
Thread Protective Cap1
Installation Manual1

Note: