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PMVF70 – MODULAR INTERFACE G59 PROTECTION RELAY
Lovato PMVF70 interface protection system compliant with ENA G59 and G99 for single-phase and three-phase 230 V and 400 V AC generation installations, featuring voltage, frequency, ROCOF and vector shift protection.
£842.40
Why Choose the Lovato PMVF70 Interface Protection System?
The Lovato PMVF70 is a dedicated interface protection system unit designed for electricity generation installations operating in parallel with public distribution networks. Developed for UK applications, it complies with the Energy Networks Association G59 and G99 engineering recommendations and continuously monitors the grid connection for abnormal voltage, frequency and loss-of-mains conditions.
Suitable for single-phase and three-phase systems, the PMVF70 can be used on low-voltage networks or on high-voltage installations through suitable external measurement transformers. It provides dual-threshold minimum and maximum voltage protection, dual-threshold minimum and maximum frequency protection, rate of change of frequency monitoring and vector shift detection.
The PMVF70 supports 230 V and 400 V AC networks, external current transformers with 1 A or 5 A secondary outputs and two changeover relay outputs. Its modular DIN rail design and optional communication expansion modules make it suitable for photovoltaic systems, wind generation, cogeneration plants and industrial generation projects. Lovato Electric currently lists this model as out of catalogue, so customers should contact LED Controls to confirm availability or discuss a suitable replacement.
Key Advantages
- Dedicated interface protection for UK grid-connected generation systems.
- Compliant with ENA G59 and G99 engineering recommendations.
- Suitable for single-phase and three-phase systems.
- Supports systems with or without a neutral conductor.
- Dual-threshold minimum and maximum voltage protection.
- Dual-threshold minimum and maximum frequency monitoring.
- Integrated ROCOF and vector shift loss-of-mains protection.
- Optional communication modules support remote monitoring and system integration.
Key Features
- Lovato PMVF series interface protection system.
- Designed for low and high-voltage generation installations.
- 230 V and 400 V AC network monitoring.
- Single-phase and three-phase system compatibility.
- Dual minimum-voltage thresholds.
- Dual maximum-voltage thresholds.
- Dual minimum-frequency thresholds.
- Dual maximum-frequency thresholds.
- Rate of change of frequency monitoring.
- Vector shift protection for loss-of-mains detection.
- External 1 A or 5 A current transformer inputs.
- Two SPDT changeover relay outputs.
- Four isolated 12 V DC digital inputs.
- True RMS current measurement.
- Removable screw terminals for straightforward panel wiring.
Reliable UK Grid Interface Protection
Electricity generation equipment connected in parallel with a public distribution network must disconnect automatically when grid voltage, frequency or stability moves outside authorised limits. The Lovato PMVF70 continuously supervises these parameters and controls the external interface device when a configured protection threshold is exceeded.
ROCOF and vector shift monitoring provide additional loss-of-mains detection alongside conventional voltage and frequency protection. This helps prevent unintended island operation and supports safe disconnection of photovoltaic, wind, cogeneration and other distributed generation systems from the public network.
Typical Applications
- Grid-connected photovoltaic installations.
- Wind turbine generation systems.
- Cogeneration and combined heat and power plants.
- Commercial and industrial generation systems.
- Low-voltage distributed generation projects.
- High-voltage generation installations using external transformers.
- Parallel generator connections.
- UK grid interface protection panels.
Technical Specifications
| Manufacturer | Lovato Electric |
|---|---|
| Series | PMVF |
| Model | PMVF70 |
| Product type | Interface protection system unit |
| System type | Single-phase and three-phase |
| Neutral configuration | With or without neutral |
| Network voltage | 230 / 400 V AC |
| Applicable recommendations | ENA G59 / G99 |
| Operating supply range | 85–264 V AC / 93.5–300 V DC |
| Rated auxiliary supply | 100–240 V AC / 110–250 V DC |
| Rated frequency | 45–55 Hz |
| Maximum operational voltage | 400 V AC line-to-line / 230 V AC line-to-neutral |
| Voltage measurement range | 20–480 V AC line-to-line / 10–276 V AC line-to-neutral |
| Current transformer input | 1 A or 5 A secondary |
| Current measurement range | 0.01–1.2 A on 1 A scale / 0.01–6 A on 5 A scale |
| Measurement method | RMS |
| Current overload withstand | 50 A for 1 second |
| Relay outputs | 2 × SPDT changeover contacts |
| Normally open contact rating | 5 A at 250 V AC AC-1 / 5 A at 30 V DC |
| Normally closed contact rating | 2 A at 250 V AC AC-1 / 2 A at 30 V DC |
| Digital inputs | 4 isolated negative PNP inputs |
| Digital input voltage | 12 V DC |
| Terminal type | Removable screw terminals |
| Maximum terminal torque | 0.8 N·m |
| Conductor capacity | 0.2–4 mm² |
| Mounting type | Modular DIN rail mounting |
| Housing width | 6 modules |
| Protection rating | IP40 front / IP20 terminals |
| Dimensions (W × H × D) | 108 × 105.4 × 63 mm |
| Weight | Approximately 470 g |
| Product status | Out of catalogue |
| Conformity | IEC/EN 61010-1, IEC/EN 61000-6-2 and IEC/EN 61000-6-4 |
| HS Code | 85364900 |
Frequently Asked Questions
What is the Lovato PMVF70 used for?
The PMVF70 monitors the connection between a local electricity generation system and the public distribution network. It controls an external interface device when abnormal grid or loss-of-mains conditions are detected.
Which UK grid requirements does the PMVF70 support?
The Lovato PMVF70 is certified for applications requiring compliance with the Energy Networks Association G59 and G99 engineering recommendations.
Can the PMVF70 monitor single-phase and three-phase systems?
Yes. The unit is suitable for single-phase and three-phase systems, including installations with or without a neutral conductor.
What loss-of-mains protection functions are included?
The PMVF70 provides rate of change of frequency and vector shift monitoring, alongside dual-threshold minimum and maximum voltage and frequency protection.
Is the Lovato PMVF70 still available?
Lovato Electric lists the PMVF70 as out of catalogue. Customers should contact LED Controls to confirm remaining availability or identify a suitable current interface protection system.
Trusted for UK Distributed Generation Protection
Lovato PMVF interface protection systems are used by renewable energy specialists, electrical engineers and panel builders to provide dependable grid supervision, loss-of-mains detection and disconnection control for distributed generation installations.
