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V-LIM Insulation Monitoring Device

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Real-Time Insulation Resistance Monitoring for Critical Electrical Systems

V-LIM delivers real-time insulation resistance monitoring for AC and DC electrical systems, helping engineers detect degradation early, prevent failures, and avoid costly downtime.

Continuous insulation monitoring under live conditions

High accuracy measurement up to 10 GΩ

Proven in subsea and harsh industrial applications

Retrofit or integrate into new systems with minimal disruption

Overview

Electrical insulation naturally degrades due to moisture ingress, vibration, temperature stress, and ageing infrastructure. Without continuous monitoring, this degradation often remains invisible until failure occurs.

V-LIM functions as a continuous insulation monitoring device (IMD), providing real-time visibility of insulation resistance so faults can be detected before they become critical.

Key outcomes:

  • Reduce unplanned downtime
  • Improve electrical safety
  • Extend asset lifespan
  • Enable predictive maintenance strategies
Safe
Monitor
Assess
Prevent
Protect

Why V-LIM

A high-performance insulation monitoring system designed for demanding environments.

  • High accuracy insulation resistance measurement up to 10 GΩ
  • Continuous monitoring of live electrical systems
  • Stable performance in electrically noisy environments (V-NET Sync)
  • Suitable for AC, DC, embedded, and retrofit applications
  • Designed for subsea, offshore, and heavy industrial use

Accurate, continuous insulation monitoring

Key Features of the V-LIM

V-LIM is designed to deliver accurate, reliable insulation monitoring in demanding environments, combining advanced measurement capability with flexible deployment.

Precision insulation monitoring

  • Continuous measurement of insulation resistance, capacitance, and system health
  • High accuracy monitoring up to 10 GΩ with V-LIM2

Reliable data in harsh environments

  • Advanced digital signal processing ensures stable measurements
  • V-NET Sync technology reduces electrical noise and interference

Designed for operational use

  • Touchscreen interface for live and historical data
  • Configurable alarms for early warning of degradation
  • USB and network connectivity for data access

Flexible deployment

  • Panel-mounted and portable options to suit different applications
  • Suitable for retrofit or integration into new systems with minimal disruption

Choose the right V-LIM

V-LIM is available in multiple options to support different system requirements:

V-LIM2

High-precision, panel-mounted insulation monitor with early warning, extended-range trending, and integrated power monitoring for complete ungrounded system visibility.

Datasheet >

V-LIM

Panel-mounted insulation monitor delivering early warning and measurement trending of ungrounded power systems’ health.

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V-LIM Portable

Rugged, portable insulation monitor for retrofit and temporary installations, providing early warning and measurement trending of ungrounded power systems’ health.

Datasheet >

IR Measurement Range

Extended (1 kΩ – 10 GΩ)

Standard (1 kΩ – 1 GΩ)

Standard (1 kΩ – 1 GΩ)

Power Monitoring Capability

Advanced

Limited

Limited

Interface

Advanced

Standard

Standard

Installation Method

Panel Mount

Panel Mount

Rugged Portable Case

Power Supply Options

Wide-range AC/DC or 24 VDC

Wide-range AC/DC or 24 VDC (by variant)

Wide-range AC/DC

Proven Performance in Subsea Environments

Avoiding Costly Subsea Intervention Through Early Fault Detection

A global operator retrofitted V-LIM into an ageing subsea control system to improve reliability and reduce unplanned outages.

Continuous insulation monitoring enabled early detection of degradation trends, allowing maintenance before failure occurred.

By integrating remote activation capabilities, the operator avoided a costly subsea intervention and extended asset service life.

Subsea oil and gas infrastructure

Contact our team

Have a question or need support? We’ll help you choose the right insulation monitoring solution for your application.

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