HDE IT-4 Series Insulator Tester

This product can be handheld for convenient testing of de-energized insulators in-store yards, reclaim areas, and in the field just prior to installation of insulators on the line. The tester is equipped with a universal spline for use with a hot stick allowing for convenient energized testing of insulators immediately prior to live line work. It is capable of testing insulators in a string at all voltage levels.

Operation

The IT-4 Insulator Tester is a self-contained unit. There are two probes that attach to the instrument. They can be adjusted in three different positions for individual preference. Once the probes are in place, it is ready to test de-energized porcelain, glass, suspension or cap, and pin insulators. Simply hold the unit by the universal spline and press the red power button. To test an insulator, place one probe on the cap of the insulator and the other on the pin. If the LED display is lit past the second yellow LED and/or the buzzer sounds, the insulator is conductive and should be tested for surface contamination.

Testing for surface contamination is just as easy. Placing the probes on the skirt of the insulator will determine if the surface is conductive. If the surface is found to be conductive, the insulator should be cleaned and retested.

Testing multi-piece insulators while they remain in service can also be done with the IT-4. Attach a hot stick to the universal spline on the front of the instrument, and by following the same testing procedures, defective insulators can be identified in the field while energized, with no disruption of service.

Benefits

• Instantly identifies insulators that are defective due to non-visible internal cracks
• Use as a routine maintenance tool to improve system reliability and enhance line crew safety when energized maintenance work is performed
• Use as a troubleshooting tool in tracing the sources of ground fault trips and RF/TV interference, which can be caused by faulty insulators
• Stretch your materials purchasing dollar by testing insulators for recycling
• Use as a maintenance tool to verify insulator string integrity prior to shunting insulator bells when energized maintenance work is performed
• Will not promote flash over when used on energized insulators because it functions as an insulator as well as an insulator tester