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PMVF20D048 – PMVF PROTECTION RELAY
Lovato PMVF20D048 interface protection unit for three-phase 230 V and 400 V AC systems with or without neutral, featuring dual-threshold voltage and frequency protection and a 12 to 48 V DC auxiliary supply.
£1,824.99
Why Choose the Lovato PMVF20D048 Interface Protection Unit?
The Lovato PMVF20D048 is a dedicated interface protection system unit designed to monitor the connection between a local electricity generation installation and the public low-voltage distribution network. It is suitable for photovoltaic systems, cogeneration equipment and other distributed generation applications operating in parallel with the mains supply.
Designed for three-phase systems with or without neutral, the PMVF20D048 continuously monitors minimum and maximum voltage together with minimum and maximum frequency. Dual protection thresholds allow the unit to detect abnormal grid conditions and operate the interface disconnection device when monitored values move outside permitted limits.
The PMVF20D048 is intended for 230 V and 400 V AC networks and features a 12–48 V DC auxiliary supply. It is compliant with the Italian CEI 0-21 standard for low-voltage interface protection. This model is listed by Lovato Electric as out of catalogue, so customers should contact LED Controls to confirm availability or identify a suitable replacement.
Key Advantages
- Dedicated interface protection for distributed generation systems.
- Suitable for three-phase systems with or without neutral.
- Dual-threshold minimum and maximum voltage protection.
- Dual-threshold minimum and maximum frequency monitoring.
- Designed for 230 V and 400 V AC low-voltage networks.
- 12–48 V DC auxiliary supply for control-panel applications.
- Compatible with current transformers featuring 1 A or 5 A secondary outputs.
- Compliant with the Italian CEI 0-21 interface protection standard.
Key Features
- Lovato PMVF series interface protection system.
- Three-phase voltage and frequency monitoring.
- Suitable for systems with or without a neutral conductor.
- Dual minimum-voltage thresholds.
- Dual maximum-voltage thresholds.
- Dual minimum-frequency thresholds.
- Dual maximum-frequency thresholds.
- 12–48 V DC rated auxiliary supply.
- Maximum auxiliary operating voltage of approximately 70 V DC.
- Current measurement using 1 A or 5 A current transformers.
- Relay outputs for interface device control and alarm signalling.
- Suitable for photovoltaic and parallel generation installations.
Reliable Grid Interface Protection
Distributed electricity generation systems must be disconnected from the public network whenever voltage or frequency conditions move outside permitted operating limits. The Lovato PMVF20D048 continuously monitors the mains connection and controls an external interface device when an unacceptable grid condition is detected.
Its dual voltage and frequency thresholds allow the protection response to be coordinated with the requirements of the generation system and local distribution network. The low-voltage DC auxiliary supply makes the unit suitable for control panels equipped with battery-backed or dedicated DC power supplies.
Typical Applications
- Photovoltaic generation systems.
- Low-voltage renewable energy installations.
- Cogeneration and combined heat and power systems.
- Distributed electricity generation.
- Parallel generator connections.
- Grid-connected industrial power systems.
- Interface protection control panels.
- Energy production and monitoring installations.
Technical Specifications
| Manufacturer | Lovato Electric |
|---|---|
| Series | PMVF |
| Model | PMVF20D048 |
| Product type | Interface protection system unit |
| System type | Three-phase with or without neutral |
| Network voltage | 230 / 400 V AC |
| Rated auxiliary supply | 12–48 V DC |
| Maximum auxiliary operating voltage | 70 V DC |
| Rated frequency | 50 / 60 Hz |
| Current transformer input | 1 A or 5 A secondary |
| Voltage protection | Dual-threshold minimum and maximum voltage |
| Frequency protection | Dual-threshold minimum and maximum frequency |
| Permitted energisation delay | Up to 60 s |
| Applicable standard | CEI 0-21 |
| Mounting type | Panel mounting |
| Dimensions (H × W × D) | Approximately 96 × 96 × 80 mm |
| Product status | Out of catalogue |
| HS Code | 85364900 |
Frequently Asked Questions
What is the Lovato PMVF20D048 used for?
The PMVF20D048 monitors voltage and frequency at the connection between a local electricity generation system and the public low-voltage mains network.
What is the auxiliary supply voltage of the PMVF20D048?
The unit operates from a rated 12–48 V DC auxiliary supply, with a maximum auxiliary operating voltage of approximately 70 V DC.
Which electrical systems can the PMVF20D048 monitor?
It is designed for three-phase 230 V or 400 V AC systems operating with or without a neutral conductor.
What protection functions are included?
The PMVF20D048 provides dual-threshold minimum and maximum voltage protection together with dual-threshold minimum and maximum frequency monitoring.
Is the Lovato PMVF20D048 still available?
Lovato Electric lists the PMVF20D048 as out of catalogue. Customers should contact LED Controls to confirm remaining availability or discuss a suitable current replacement.
Trusted for Grid Interface Protection
Lovato PMVF interface protection units are used by renewable energy installers, electrical engineers and panel builders to provide dependable grid monitoring and disconnection control for parallel electricity generation systems.
