Why Choose the Lovato PMV30A600 Voltage Monitoring Relay?
The Lovato PMV30A600 is a reliable three-phase voltage monitoring relay designed to protect industrial electrical systems against undervoltage, phase loss and incorrect phase sequence. As part of the Lovato PMV30 series, it provides dependable monitoring for three-phase systems operating without a neutral conductor.
This self-powered monitoring relay continuously checks the connected 600 V AC supply and de-energises its output relay when an abnormal condition is detected. Adjustable voltage and timing controls allow the protection settings to be matched to the requirements of motors, machinery and control systems, helping to prevent equipment damage, unexpected downtime and incorrect motor rotation.
With a rated control voltage of 600 V AC, adjustable minimum-voltage threshold and fast phase-loss detection, the PMV30A600 is suitable for demanding industrial applications. Its compact two-module enclosure and 35 mm DIN rail mounting make it straightforward to install within electrical control panels and distribution assemblies.
Key Advantages
- Monitors three-phase 600 V AC systems without neutral.
- Detects minimum voltage, phase loss and incorrect phase sequence.
- Self-powered design eliminates the need for a separate auxiliary supply.
- Adjustable 80–95% voltage threshold for application-specific protection.
- Adjustable tripping and reset delays help prevent nuisance switching.
- Fast phase-loss response helps protect motors and connected machinery.
- Compact two-module construction for space-efficient panel installation.
Key Features
- Lovato PMV30 voltage monitoring relay series.
- 600 V AC rated control voltage.
- Designed for three-phase systems without neutral.
- Monitoring of minimum AC voltage, phase loss and phase sequence.
- 80–95% of Ue adjustable voltage set-point.
- 0.1–20 second adjustable tripping delay.
- 0.1–20 second adjustable resetting time.
- Automatic reset with 3% resetting hysteresis.
- One SPDT changeover relay output rated up to 8 A.
- Green and red LED status indication.
- 35 mm DIN rail mounting with screw terminals.
Reliable Three-Phase Voltage Protection
Voltage monitoring relays continuously supervise the condition of an electrical supply and operate their output contacts when measured values move outside the configured limits. This allows connected control circuits, contactors or alarms to respond before motors and other equipment are exposed to damaging operating conditions.
The Lovato PMV30A600 is particularly useful where phase loss or an incorrect phase sequence could cause motors to overheat, lose torque or rotate in the wrong direction. Its adjustable undervoltage threshold and timing functions provide flexible protection while helping to avoid unnecessary trips caused by brief supply disturbances.
Typical Applications
- Three-phase motor protection systems.
- Industrial control panels and switchboards.
- Pumps, fans and compressors.
- Conveyors and material handling equipment.
- Production and packaging machinery.
- HVAC and refrigeration systems.
- Generators and industrial power distribution systems.
