Universal Power Station Insulator Tester

With the Universal Power Station Insulator Tester, high-voltage electrical apparatus at substrations can now reliably be tested without shutting power down at the substation. The Universal Power Station Insulator Tester has been specically designed to operate in power stations on insulators and bushings of all shapes. It uses Positron’s proven and patented electric field technology to ensure 100% reliability in detecting any conductive defects without disconnecting power from the insulators, bushings, or the devices they are attached to. It allows a user to test an insulator or bushing in less than a minute to determine if it has any conductive defects, the degree and location of defects and whether it is safe to work in the vicinity of the insulator or bushing.

  • Used on all types of substation insulators (Porcelain, Glass, Composite, etc...)
  • Ideal for substation environments (conical shaped insulators, bushings, station posts, lightning arresters, etc)
  • Designed for operator safety (no electrical contact with insulator string)
  • Lightweight, durable construction
Product Number Description Download Documents
378265U2/50, 378265U2/60 Universal Power Station Insulator Tester User Guide

Insulator Tester


  • Microprocessor based technology
  • Compatible with standard hot sticks and field equipment
  • Tests Procelain, Composite, Station Post and other insulator applications
  • Readings are taken at each porcelain bell or polymeric composite insulator skirt or shed
  • Readings are triggered by drawing the instrument over the substation apparatus being tested
  • Lightweight and durable
  • Ruggedized carrying cases
  • Optional Tablet/Laptop

Options available:

  • Composite Insulator Tester, 50 Hz 378265U2/50
  • Composite Insulator Tester, 60 Hz 378265U2/60