V-LIM Electrical Line Integrity Monitoring Module.
Providing Accurate Electrical Integrity Data Even at Very Low Insulation Resistance Levels.
Specifically designed to address the demands of the oil and gas sector, the V-LIM is an accurate and precise insulation monitoring device that monitors subsea electrical cable integrity. V-LIM’s Insulation Monitoring capabilities support you through the system lifecycle: proactive maintenance on greenfields, informed decision-making on brownfields, and prolonging the life of degraded subsea cables using V-LIFE.
Why V-LIM?
Accurate monitoring and trending of Insulation Resistance (IR) levels over a wide range from 1kΩ to 1GΩ.
Interface modules allow for easy replacement of legacy equipment.
Significantly reduces levels of copper loss compared to competing insulation monitoring devices (IMDs). Reduced further when V-LIFE is active.
Can be used to activate our cutting-edge IR recovery technology, V-LIFE.
Precise and Accurate Electrical Cable Integrity Monitor.
Long-term operation and exposure to harsh environmental conditions causes insulation degradation in cables and other electrical equipment over time. With its precise and accurate measurements of Insulation Resistance, Capacitance and other advanced electrical parameters, V-LIM not only provides a better picture of the health of the system over time, but also provides opportunities to identify problems before they arise. This allows proactive and more cost-effective intervention to be undertaken based on risk and asset condition assessments rather than relying on reactions to failures after they have occurred.
The V-LIM unit employs Digital Signal Processing techniques, which facilitate trending and characterization of the system condition with reliable fault disclosure over a wide measurement range.
V-LIM has two independently adjustable alarms and relay contacts set to predefined user-configurable thresholds. When the V-LIM detects that the IR has fallen below the thresholds, the alarms activate, and the relays operate. V-LIM offers an overall system condition as a standalone unit, which can be interrogated using the module’s touch LCD panel or downloaded easily via USB A or B.
Additionally, V-LIM is V-LIFE ready – an exclusive feature for subsea applications that can be activated to increase the system IR and availability without the need for costly intervention or risk of introducing new faults.
The principle of insulation monitoring is to apply a voltage between the copper conductors in a cable and earth and measure the resulting current that flows. Using any Insulation Monitoring Device (IMD) to monitor IR degradation in a cable submerged in seawater will cause damage to the copper conductors at the point where the conductor insulation is damaged. The V-LIM has been designed to substantially reduce copper loss compared to competing devices on the market. By enabling V-LIFE, the copper loss can be almost entirely eliminated.
V-LIM forms part of Viper Innovation’s V-IR product line, offering a granular view of the subsea electrical network, its component and cable condition, as well as fault identification and location.
Product Features.
- Two separately configurable alarms with associated relay contacts to take desired action
- Timestamped measurement data is logged to internal memory
- Touchscreen LCD and web interface displays
- Ethernet, RS485 Modbus and 4-20mA interfaces
- Upload firmware and configuration settings from front panel USB interfaces via memory stick or service PC
- Download data log to memory stick or service PC
- Compatible with temporary application of external IR test unit without physical disconnection of V-LIM
- Multiple user security levels supported for secure access
- Built-in self-test
- 2 Year data storage without overwrite
- V-LIFE cable remediation technology
- Line Current Measurement up to 20A
- V-SLIM integration for V-IR network condition monitoring
- V-LIFE ready – increases IR without subsea intervention
- Accurate monitoring and trending of IR levels over a wide range from 1kΩ to 1GΩ
- Monitors Insulation Capacitance up to 150µF
- Multiple power supply options
- Interface modules allow for easy replacement of legacy equipment.
- Determine fault locations when combined with the use of the V-SLIM
- Significantly reduces levels of copper loss compared to competing insulation monitoring devices (IMDs)
- Electro-Hydraulic Subsea Production Control Systems
- Mission critical IT (unearthed) electrical distribution systems
Upgrading Brownfields with V-LIM Technology.
In this case study, discover how the V-LIM product can be used to upgrade the integrity monitoring capability on brownfield applications as well as being specified as the product of choice for greenfield installations.
Once installed, V-LIM allows the unit to be retrofitted into existing systems as easily as possible, without compromising the design.
Key Electrical Interfaces:
- Input Power Supply:
- 85V to 264V AC, 47-63Hz
- 120V to 370V DC
- Line Voltage:
- Up to 1000V DC / AC 47-410Hz
- Power Consumption: 5W typical 14W maximum
Insulation Monitoring Standards:
- IEC 61557-1
- IEC 61557-8
For the comprehensive product specification please refer to the product datasheet resource.
All items are typically available ex-stock.
Two V-LIM models available with different power supply options:
- Part Number: VA-223619 for power supply input:
- 110V to 240VAC 50/60Hz
- 120V to 370VDC
- Part Number: VA-223619-24V for power supply input:
- 24V DC
Accessories:
- Split line Current Transformer for line current measurement capability: Part Number: VA-229986
- A range of standard interface panels and cable harnesses are available for retrofit applications in all major SPCS vendor Electrical Power Unit (EPU) cabinets.
Please complete the V-LIM product questionnaire under the resources tab and email to sales@viperinnovations.com to allow us to provide a tailored quotation to match your specific project requirements.
Get in touch with Viper Innovations.
Contact us to find out more about how our products & services could help maximize 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.