Monitor

V-SLIM provides complete subsea infrastructure oversight.

Illuminating blind spots in electrical integrity and revealing hidden risks before they escalate.

Precise & accurate electrical cable integrity monitoring for distributed ungrounded/floating electrical systems.

Water ingress is one of the most common and costly challenges in subsea electrical systems. Over time, insulation resistance drops, increasing leakage currents and triggering faults. If left undetected, this leads to circuit failures, production downtime, and expensive intervention campaigns to locate and repair the issue. Traditional topside insulation monitors provide only a single resistance reading for the entire subsea system and offer no visibility into the number, location, or severity of faults, making accurate, efficient fault diagnosis virtually impossible.

V-SLIM shines a light on unseen risks, bringing clarity to areas of the network that conventional topside monitors cannot reach. It is designed to solve this problem at its source. It’s a high-precision cable integrity monitor, installed directly within subsea distribution networks to detect insulation degradation early and locally, before it leads to failure. By revealing overlooked areas in electrical integrity and clarifying hidden gaps in performance, V-SLIM enables distributed, underwater monitoring from day one, V-SLIM reduces risk, lowers intervention costs, and ensures long-term system reliability.

V-SLIM also supports V-LIFE, enabling remote insulation resistance recovery, even within isolated subsea sections.

With V-SLIM, subsea electrical systems gain the visibility and resilience they need to perform reliably — not just on day one, but for years to come.

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V-SLIM: Subsea deployed line monitoring made smarter.

V-SLIM was originally developed for subsea insulation resistance monitoring and healing downstream of transformers, but is equally suited for monitoring other ungrounded (unearthed) electrical systems, ensuring complete infrastructure oversight. It enhances visibility into electrical integrity deficiencies and helps operators move from reactive fault repair to proactive fault prevention.

Its unique capability to measure both total system and downstream insulation resistance gives operators a clear, detailed view of electrical integrity across the distribution network. When installed at strategic points, V-SLIM clarifies electrical integrity gaps, illuminates potential problem areas, and enables early detection of degradation fault location through analytics and long-term condition monitoring.

Two variants are available;

V-SLIM Eurocard PCBA: Designed for installation in OEM subsea distribution and control hardware.

V-SLIM Canister: A cable integrity monitoring harness, intended for integration in subsea distribution systems.

Deployed on the secondary side of isolation transformers,V-SLIM fills a critical monitoring gap that topside devices can’t reach. By lighting the way through electrical integrity blind spots, it enables operators to see what was once unseen — turning insight into action and prevention. It can also be V-LIFE enabled, allowing recovery of low insulation resistance in hard-to-access subsea components like infield umbilicals and electrical flying leads, reducing the need for costly interventions.

V-SLIM: Precision monitoring. Subsea ready.

Ensure your system is V-LIM ready.

Product features.

  • Measurement of total system insulation resistance and insulation resistance downstream of the unit
  • V-LIFE® – award-winning cable rejuvenation technology
  • Built-in measurement of additional parameters including line voltage, current, frequency, and insulation capacitance
  • Patented measurement technology allowing wires to be routed directly through the V-SLIM with no need for in-line switches or electronics
  • Compatibility with AC or DC systems
  • Compatibility with external IR verification testing activities
  • Timestamped measurement data is logged to internal memory

  • Provides information to enable electrical fault location
  • Minimises subsea intervention costs
  • Mitigation of unplanned production loss
  • V-SLIM Canister: Industry-standard interface compatible with pressure balanced oil-filled (PBOF) hoses enabling PBOF electrical harness integration
  • V-SLIM Eurocard: Standardised single-height (3U) Eurocard format
  • V-SLIM Eurocard: Easy PCBA securing via 5x fixing holes or by slotting the long edges into card guides

  • Electro-Hydraulic Subsea Production Control Systems
  • Monitoring IR downstream of subsea transformers
  • Monitoring and IR recovery of wet-parked umbilicals during FPSO refurbishment

Install V-LIM and be V-LIFE ready.

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Get in touch

Contact us to find out more about how our products & services could help maximise the operational life of your controls and electrical distribution equipment.

Our expert teams are equipped with the relevant experience and skills to provide support and to answer your technical queries, email us at enquiries@viperinnovations.com or via our contact form.