New from Greenlee. Stocked at LTL.

Greenlee IT-5 Insulator Tester: Fast, Confident Insulator Verification for Utility Line Crews

Quick, reliable go/no-go insulator checks with simple visual and audible feedback. On live or dead lines, from a hot stick.

The IT-5 detects internal dielectric failures in porcelain and glass suspension insulators and identifies surface contamination on all insulator types, including porcelain, ceramic, glass and polymer/composite. Available now from LTL, coast to coast.

Greenlee IT-5 Insulator Tester with LED leakage bar, available from LTL Canada

What it does

What the Greenlee IT-5 Insulator Tester Detects in the Field

The IT-5 gives utility line crews a fast, straightforward way to evaluate insulator condition without pulling the string or waiting on a lab. It detects internal dielectric failures in porcelain and glass suspension insulators, and it identifies surface contamination on every insulator type your crews meet: porcelain, ceramic, glass and polymer/composite. A multi-level LED bar and a 103 dB buzzer give a clear go/no-go read on the spot, on energized or de-energized lines.

1

Faster go/no-go decisions

The LED bar reads leakage instantly, so a crew can clear or flag an insulator in seconds instead of guessing.

2

Works live or dead

Test on energized or de-energized insulators from a hot stick, using the spline or shotgun stick connections crews already carry.

3

Built for daily field use

Balanced, lightweight housing. Rechargeable internal Li-ion battery. Simple single-button interface with battery status.

Features

IT-5 Features That Matter on the Line

Instant Read LED Bar

A multi-level LED scale shows insulator condition at a glance and works on both live and dead insulators.

Audible Buzzer

A 103 dB alert (at 10 cm) confirms the read when visibility is limited or the display is out of your line of sight.

Charge & Go Battery

Internal rechargeable Li-ion battery with USB-C charging keeps the tester ready between shifts and minimizes downtime.

Universal Attachment

Connects to spline and shotgun hot sticks, so it fits the live-line tools your crews already use.

Lightweight, Balanced Housing

2.5 lb (1.13 kg) with a balanced design that supports stable use on a hot stick and reduces fatigue.

Simple Interface

One on/off button and a battery status indicator. Simple to learn, simple to use, nothing to configure.

Specifications

Greenlee IT-5 Insulator Tester Specifications

Specification IT-5
Dimensions 11.2 in. x 3.4 in. x 6.2 in. (284 mm x 86 mm x 157 mm)
Weight 2.5 lb (1.13 kg)
Max output voltage 10 kV DC
Max output current 85 µA
Audible sound level 103 dB at 10 cm
Operating temperature -4°F to 125°F (-20°C to 52°C)
Enclosure material Nylon, UL 94-V0
Printed circuit board FR-4, UL 94-V0
Max altitude 6,566 ft (2,000 m)
Battery Internal rechargeable Li-ion, USB-C charging
Indication Multi-level LED bar plus audible alert
Cat. no. Description
IT-5 IT-5 Insulator Tester (with test probes and charging cable)
025-02035-SUB Straight Test Probe
025-02040-SUB Bent Test Probe

VIDEO

See the Greenlee IT-5 Insulator Tester in Action

Watch how a crew uses the IT-5 from a hot stick to read insulator condition in the field.

WHY LTL

Why Utility Crews Buy Greenlee Tools from LTL

LTL has served utilities, industrials, electrical contractors and telcos since 1958. We sell and service the industry’s preferred tools and equipment, and we stock them at branches across Canada so your crews are not waiting on a cross-border shipment.

01

Stocked coast to coast

Order the IT-5 Insulator from your local branch conveniently located across Canada: Toronto, Edmonton, and Surrey.

02

We service what we sell

LTL’s NAIL-accredited laboratories in Toronto, Edmonton and Surrey test, calibrate and repair the tools and equipment we supply, so your Greenlee purchase has a service home in Canada. See our laboratory services.

03

Product training and technical support

LTL reps and technicians help crews get the most from new equipment, from first charge to field use.

WHO IT’S FOR

Built for Power Utilities, Utility Contractors and Live-Line Crews

The IT-5 is designed for utility line work: transmission and distribution crews, live-line teams, and utility contractors who need to confirm insulator condition quickly and safely.

power utilities icon

Power utilities

utility contractors icon

Utility contractors

live-line teams icon

Live-line teams

FAQ

Greenlee IT-5 Insulator Tester: Common Questions

What does the Greenlee IT-5 Insulator Tester do?

The IT-5 checks the condition of overhead line insulators in the field. It detects internal dielectric failures in porcelain and glass suspension insulators and identifies surface contamination on porcelain, ceramic, glass and polymer/composite insulators. A multi-level LED bar and an audible buzzer give crews an immediate go/no-go result.

Yes. The IT-5 is designed for use on both live and dead insulators. It mounts to spline and shotgun hot sticks, so crews can test energized suspension insulators from a safe working position without de-energizing the line. Always follow your utility’s live-line work procedures and minimum approach distances.

The IT-5 detects internal dielectric failures in porcelain and glass suspension insulators. It also identifies surface contamination on all insulator types, including porcelain, ceramic, glass and polymer/composite. That makes it a single field tool for mixed fleets where different insulator materials are in service on the same system.

The IT-5 runs on an internal rechargeable Li-ion battery with USB-C charging, so there are no disposable cells to carry or replace. A battery status indicator sits beside the single on/off button. Charging between shifts keeps the tester ready and minimizes downtime on the truck.

Greenlee lists the IT-5 as backwards compatible with legacy IT-4 accessory probes, so fleets can upgrade the tester without replacing every probe. Confirm probe compatibility for your specific accessories with your LTL representative before ordering, and note the IT-5 ships with straight and bent test probes included.

LTL stocks and supplies the Greenlee IT-5 across Canada through its branches. Call Ontario, Quebec and the Maritimes at 800-299-9769, Alberta, Saskatchewan, Manitoba and the Northern Territories at 800-530-8640, or British Columbia at 604-839-6911, or request a quote on this page and your local LTL rep will follow up.

GET STARTED

Request a Quote on the Greenlee IT-5 Insulator Tester

Contact your local LTL representative for pricing, availability and a quote on the IT-5, test probes and accessories.

FIRST NAME *

LAST NAME *

EMAIL ADDRESS *

PHONE *

COMPANY *

PROVINCE *

QUANTITY (OPTIONAL)

MESSAGE