Select your location

Serial Number Verified :
Authenticated:
The product is verified as being authentic; however, this does not guarantee the condition or fit for purpose of the product.

InsulGard

Eaton’s InsulGard Predictive Diagnostic solution provides continuous, non-invasive online monitoring for generators, motors, switchgear, unit substation dry-type transformers, bus duct, and cable connections. InsulGard’s constant tracking of partial discharge activity and predictive monitoring helps users to make better safety and asset management decisions. Advanced filters enhance accurate monitoring, and a user-friendly web interface provides a simple way to monitor device status. 

InsulGard
Protect your investment
Equipment life extension
Maximize your uptime
Reduce scheduled maintenance

InsulGard - predicts insulation failures before they occur

Predict insulation failures

By measuring partial discharge activity in medium voltage equipment, InsulGard provides intelligence about the wellness of electrical insulation, enabling better decision-making for managing electrical assets and increasing safety for plant personnel.

The ROI from InsulGard

The average cost of motors, generators and switchgear can range from $100k to many millions, and if a station is shut down, that loss can be catastrophic. In addition, buying equipment is only part of the expense of replacing it. 

Protect your investment.

In many circumstances, InsulGard can double the equipment’s life span. 

InsulGard can maximize your uptime

InsulGard is a more economical alternative for maintaining electrical power equipment.

A proven history

Thousands of InsulGards are protecting assets all over the world.
InsulGard insulation failure prediction - front and back view

Eliminate periodic scheduling of downtime to perform tests and time-based maintenance that lead to customer inconvenience

The InsulGard predictive relay revolutionized predictive maintenance practices by introducing one continuous, online partial discharge (PD) monitoring system designed for the following medium voltage applications:

  • Generators
  • Motors
  • Switchgear
  • Unit substation dry-type transformers 
  • Bus duct 
  • Cable connections 

Continuous eliminates the chances of failures occurring between periodic test events. 

Online eliminates the inaccuracies of offline tests.

InsulGard also reduces the level of expertise required to analyze PD data with userfriendly software.

Eaton's InsulGard

Eaton's InsulGard Predictive Diagnostic solution provides continuous, online monitoring of generators, motors, switchgear, transformers and more!

Insulgard - reliable support you can count on

InsulGard technology works for you 24 hours a day, 7 days a week, 365 days a year.

The InsulGard system detects partial discharge activity online, with the entire electrical system energized—no offline testing necessary. It analyzes radio frequency (RF) signals emitted by the partial discharge pulses and measures pulse quantity and magnitude, then correlates the data to temperature, humidity and various other electrical system dynamics. If PD levels exceed programmable set points, alerts are initiated. With or without alerts, you can quickly view or analyze trends using InsulGard software.

The predictive relay works as a single, local device or in a communication network with multiple devices.

The most commonly used sensors include coupling capacitors and radio frequency current transformers (RFCTs). For rotating machinery, such as generators and motors, additional sensing technologies are available.

For sites with pre-existing sensors, the InsulGard predictive relay is fully compatible and can be instantaneously commissioned.

Typical rotating machine application
Typical rotating machine application

InsulGard used with generators and motors

Available sensors for rotating machinery include coupling capacitors and RFCTs. The traditional sensor of choice is the coupling capacitor; with this sensor alone, InsulGard technology provides much broader coverage of the stator winding when compared with the competition.

An optional RTD module takes advantage of a third PD sensing technology that dramatically increases the coverage of the stator winding for maximum coverage.

Used alone or in combination, the PD sensors, along with sensors for humidity, load and temperature, connect to the InsulGard predictive relay for monitoring, data collection and analysis.

InsulGard is also compatible with variable frequency drives and can be used on motors running between 3 and 400 Hz.

Problems that partial discharge analysis can detect within rotating equipment include:

  • Early stages of insulation deterioration
  • Sparks in voids and between windings
  • Corona on end windings

Discover and correct damages before they occur

Corona damage on the motor windings
Corona damage on the motor windings
Damage to bus caused by air gaps within bus support
Damage to bus caused by air gaps within bus support
34.5 kV potential transformer tracking
34.5 kV potential transformer–tracking

InsulGard used with switchgear

Available sensors for rotating machinery include coupling capacitors and RFCTs. The traditional sensor of choice is the coupling capacitor; with this sensor alone, InsulGard technology provides much broader coverage of the stator winding when compared with the competition.

An optional RTD module takes advantage of a third PD sensing technology that dramatically increases the coverage of the stator winding for maximum coverage.

Used alone or in combination, the PD sensors, along with sensors for humidity, load and temperature, connect to the InsulGard predictive relay for monitoring, data collection and analysis.

InsulGard is also compatible with variable frequency drives and can be used on motors running between 3 and 400 Hz.

Problems that partial discharge analysis can detect within rotating equipment include:

  • Early stages of insulation deterioration
  • Sparks in voids and between windings
  • Corona on end windings

Core features

  • Continuous, online monitoring. 
  • Works with generators, motors, switchgear, unit substation dry-type transformers, bus duct, and cable connections. 
  • Advanced filters enhance accurate monitoring. 
  • Web interface provides an easy way to monitor device status. 
  • Innovative sensor technology provides best in class sensing capability. 
  • Remote monitoring service available through EESS organization (www.myinsulgard.com). 
  • Factory installed into new equipment or retrofitted into existing equipment.
How to buy from Eaton