V-LIM
Safe: Protects people, systems, and environments with early detection of cable degradation.
Monitor: Continuous, high-precision insulation resistance monitoring up to 10 GΩ (V-LIM2).
Flexible Integration: Easy to retrofit or embed within new and existing systems.
Intuitive Control: Touchscreen LCD, configurable alarms, and USB data access.
V-LIFE Ready: Enables remote protection and insulation recovery when combined with V-LIFE.
Overview
We recognise that electrical insulation degrades over time due to harsh environments, moisture ingress, and electrical stress, increasing safety risk and driving system instability. Our V-LIM product range delivers highly accurate condition monitoring by continuously measuring insulation resistance, capacitance, and related parameters, providing a precise, real-time view of system health. By applying advanced digital signal processing and V-NET Sync technology, V-LIM maintains stable, reliable performance even in electrically noisy environments. Compact, configurable, and straightforward to install, V-LIM supports flexible deployment across industries. Whether embedded, retrofitted, or used as a portable diagnostic unit, it enables proactive maintenance and early fault detection, extending system life and improving safety and operational stability under both energised and de-energised conditions.
More about V-LIM features & technology
We developed the V-LIM range to deliver high-precision electrical monitoring for modern, mission-critical systems. Designed for total lifecycle visibility, V-LIM continuously tracks insulation resistance up to 10 GΩ with V-LIM2, allowing degradation trends to be identified long before faults occur. This enables preventative action that reduces operational risk and avoids costly, unplanned repairs.
Each device incorporates advanced digital signal processing for measurement accuracy, V-NET Sync to minimise electrical noise and crosstalk, and a touchscreen LCD interface for immediate access to live and logged data. Configurable alarms and relays provide early warning of changing system conditions, while USB and optional network connectivity simplify data export and remote support.
When integrated with PlatformVi, monitoring data can be analysed across fleets or facilities to deliver predictive insight and automated alerts. Fully V-LIFE Ready, V-LIM enables remote insulation recovery and enhanced protection when degradation is detected. Compact, robust, and adaptable, the V-LIM product range represents the next generation of intelligent electrical condition monitoring.
Choose the right V-LIM
V-LIM has evolved across generations to deliver greater accuracy, usability, and integration flexibility. Use the comparison below to identify the variant best suited to your system.
V-LIM2High-precision, panel-mounted insulation monitor with early warning, extended-range trending, and integrated power monitoring for complete ungrounded system visibility. Datasheet > |
V-LIMPanel-mounted insulation monitor delivering early warning and measurement trending of ungrounded power systems’ health. Datasheet > |
V-LIM PortableRugged, 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 |
Monitor Smarter. Operate Safer. Perform Better.
We deliver continuous system insight through V-LIM condition monitoring—because monitoring is not just about data, it is about preventing disruption and ensuring safety.
Resources
Find answers to common questions about the V-LIM product and its applications.
Brochures & Datasheets
V-LIM Datasheet
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White Papers & Technical Papers
Copper Saving Study
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Subsea Case Studies
Upgrading Brownfields with V-LIM
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Our Solutions
Viper’s subsea oil & gas solutions
We pioneered our technology in the subsea oil and gas industry, where safety, uptime, and reliability are paramount. Electrical degradation does not have to lead to downtime. By installing V-LIM or V-LIM2, we provide continuous visibility of insulation health and enable activation of V-LIFE, the world’s only intervention-free subsea electrical protection technology.
Combined with PlatformVi, our solutions allow real-time trend assessment, predictive alerts, and remote activation of insulation protection when required. This connected approach removes the need for costly subsea intervention, supporting safe, reliable, and continuous operations.
Trusted by more than 40 global operators across over 25+ countries, our subsea solutions are built around the principles of Safe, Monitor, Assess, Prevent, Protect, and are proven to extend asset life while reducing operational risk, cost, and environmental impact.
Installation made simple
Installation of our solutions is designed to be simple, flexible, and adaptable across a wide range of environments. Systems can be retrofitted into existing infrastructure or integrated into new designs with minimal disruption, reducing installation time and operational impact. Multiple deployment options ensure compatibility with different architectures, supported by established standards, OEM alignment, and in-house expertise to streamline delivery and commissioning.
Building on this approach, V-LIM is engineered for straightforward installation, typically completed within one to two shifts. A range of retrofit options allows integration into live or existing systems with minimal disruption, supported by our in-house installation services where required. Panel-mounted V-LIM and V-LIM2 variants and a portable V-LIM option, together cover all common installation scenarios, ensuring a V-LIFE-ready solution for every application while simplifying deployment and long-term operation.
Case Study
V-LIM hardware enables V-LIFE protection
We retrofitted V-LIM units to an ageing subsea control system for a global operator to improve reliability and reduce unplanned outages. Continuous monitoring delivered early warning of insulation degradation, enabling proactive maintenance before failure occurred.
By combining V-LIM with remote V-LIFE activation, we avoided a costly subsea intervention and extended the asset’s service life, demonstrating clear value in demanding, high-integrity subsea environments.
Applications
V-LIM technology can support any sector where electrical integrity matters
Solutions to Maximise Asset Life
Electrical Condition Monitoring
Real-time visibility of your electrical system’s health using V-LIM and V-SLIM technologies, detecting insulation degradation early to prevent costly downtime.
Protection for Electrical Systems
Our patented V-LIFE technology restores insulation resistance without intervention — extending cable life and maintaining reliable, safe operations.
Predictive Analytics for Protection & Performance
Data-driven insight through PlatformVi and the CableGuardian Portal, turning monitoring data into preventative action and predictive intelligence.
Detection & Location of Electrical Faults
Pinpoint accuracy with SSTDR technology — detecting and locating faults before they cause disruption, improving network reliability.