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PMV70NA600 – RELE’ PROT.RETE 3F/N 480/600V MULTIFUNZ
Lovato PMV70NA600 self-powered multifunction three-phase voltage monitoring relay for 480–600 V AC systems with or without neutral, providing undervoltage, overvoltage, voltage asymmetry, phase-loss, neutral-loss and incorrect phase-sequence protection.
£246.36
Why Choose the Lovato PMV70NA600 Voltage Monitoring Relay?
The Lovato PMV70NA600 is a multifunction three-phase voltage monitoring relay designed to provide comprehensive protection for electrical systems operating with or without a neutral conductor. As part of the Lovato PMV70N monitoring relay series, it combines minimum-voltage, maximum-voltage and voltage-asymmetry monitoring with phase-loss, neutral-loss and incorrect phase-sequence detection.
This self-powered relay continuously supervises a 480–600 V AC three-phase supply and de-energises its output contacts whenever an abnormal voltage or phase condition is detected. Adjustable voltage, asymmetry and timing controls allow the protection settings to be tailored to motors, machinery, switchboards and industrial automation systems.
With adjustable 80–95% undervoltage, 105–115% overvoltage and 5–15% voltage asymmetry thresholds, the PMV70NA600 combines multiple protection functions in one compact relay. Two changeover outputs provide flexible alarm and shutdown signalling, while neutral-loss monitoring makes it particularly suitable for installations supplying phase-to-neutral loads.
Key Advantages
- Monitors three-phase 480–600 V AC systems with or without neutral.
- Detects undervoltage, overvoltage and voltage asymmetry.
- Provides phase-loss, neutral-loss and incorrect phase-sequence protection.
- Self-powered operation eliminates the need for a separate auxiliary supply.
- Independently adjustable voltage and asymmetry thresholds.
- Adjustable tripping delay helps reduce nuisance operation.
- Two changeover relay outputs support separate shutdown, control and alarm circuits.
- Automatic resetting restores operation once normal supply conditions return.
Key Features
- Lovato PMV70N multifunction voltage monitoring relay series.
- 480–600 V AC rated monitoring range.
- Suitable for three-phase systems with or without neutral.
- Minimum and maximum AC voltage monitoring.
- Voltage asymmetry monitoring.
- Phase-loss, neutral-loss and incorrect phase-sequence detection.
- 80–95% adjustable undervoltage threshold.
- 105–115% adjustable overvoltage threshold.
- 5–15% adjustable asymmetry threshold.
- 0.1–20 second adjustable tripping delay.
- 0.5 second automatic resetting time.
- Automatic reset with 3% resetting hysteresis.
- Two normally energised SPDT changeover relay outputs.
- One green LED and three red LEDs for operating and fault indication.
- 35 mm DIN rail mounting with screw terminals.
Reliable Three-Phase and Neutral Protection
The Lovato PMV70NA600 continuously supervises the incoming electrical supply and responds whenever undervoltage, overvoltage, voltage asymmetry, phase loss, neutral loss or incorrect phase sequence is detected. By disconnecting the control circuit before damage develops, it helps extend the service life of motors, drives and industrial equipment.
The adjustable thresholds and configurable timing functions enable the relay to distinguish between temporary supply disturbances and genuine electrical faults, improving system reliability while reducing unnecessary production interruptions.
Typical Applications
- Three-phase systems with distributed neutral conductors.
- Industrial motor protection circuits.
- Electrical control panels and switchboards.
- Commercial and industrial distribution boards.
- Pumps, fans and compressors.
- Packaging and production machinery.
- HVAC and refrigeration systems.
- Industrial automation and process control.
Technical Specifications
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| Reset Type | Automatic | |
|---|---|---|
| Monitored Supply | Three-phase | |
| Time Delay | Adjustable | |
| Monitoring Function | Three-phase supply | |
| Voltage | 600 V | |
| Phase | Three Phase | |
| Manufacturer | Lovato Electric | |
| Series | PMV70N | |
| Model | PMV70NA600 | |
| Product type | Multifunction three-phase voltage monitoring relay | |
| Monitored system | Three-phase with or without neutral | |
| Rated control voltage | 480–600 V AC | |
| Operating voltage range | 0.7–1.2 × Ue | |
| Rated frequency | 50 / 60 Hz ±5% | |
| Auxiliary supply | Self-powered | |
| Maximum power consumption | 27 VA | |
| Maximum power dissipation | 1.9 W | |
| Monitoring functions | Minimum voltage, maximum voltage, voltage asymmetry, phase loss, neutral loss and incorrect phase sequence | |
| Minimum-voltage set-point | 80–95% of Ue | |
| Maximum-voltage set-point | 105–115% of Ue | |
| Asymmetry set-point | 5–15% of Ue | |
| Tripping delay | 0.1–20 seconds | |
| Resetting time | 0.5 seconds | |
| Resetting hysteresis | 3% | |
| Instantaneous trip threshold | Below 70% of Ue | |
| Phase-loss tripping time | 60 ms | |
| Repeat accuracy | Better than ±0.1% | |
| Reset type | Automatic | |
| Programming method | Front potentiometers | |
| Number of relay outputs | 2 | |
| Relay operating state | Normally energised, de-energises on trip | |
| Contact arrangement | 2 changeover SPDT contacts | |
| Rated operational contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Conventional free-air thermal current | 8 A | |
| Electrical life | 100,000 cycles | |
| Mechanical life | 30,000,000 cycles | |
| Status indication | 1 green LED and 3 red LEDs | |
| Terminal type | Screw terminals | |
| Maximum terminal tightening torque | 0.8 N·m | |
| Conductor size | 0.2–4 mm² | |
| Rated insulation voltage | 600 V | |
| Rated impulse withstand voltage | 6 kV | |
| Power-frequency withstand voltage | 4 kV | |
| Operating temperature | -20 to +60 °C | |
| Storage temperature | -30 to +80 °C | |
| Protection rating | IP40 front, IP20 terminals | |
| Mounting type | 35 mm DIN rail | |
| Modular width | 3 modules | |
| Dimensions (W × H × D) | 35.8 × 104.7 × 64.9 mm | |
| Weight | 200 g | |
| HS Code | 85364900 |
Frequently Asked Questions
What is the Lovato PMV70NA600 used for?
The PMV70NA600 monitors a three-phase 480–600 V AC supply for undervoltage, overvoltage, voltage asymmetry, phase loss, neutral loss and incorrect phase sequence.
Can the PMV70NA600 operate without a neutral conductor?
Yes. The relay is suitable for three-phase systems with or without neutral, making it suitable for a broad range of industrial installations.
Does the PMV70NA600 require an auxiliary power supply?
No. The relay is self-powered directly from the monitored electrical supply.
Can the voltage and asymmetry thresholds be adjusted?
Yes. The undervoltage threshold is adjustable from 80% to 95% of Ue, the overvoltage threshold from 105% to 115% of Ue and the asymmetry threshold from 5% to 15% of Ue.
How many output contacts does the PMV70NA600 provide?
The relay provides two SPDT changeover outputs, allowing independent alarm, shutdown or control functions.
How is the Lovato PMV70NA600 installed?
The relay mounts onto a standard 35 mm DIN rail and occupies three modular units inside an electrical control panel or switchboard.
Trusted Industrial Voltage Monitoring
Lovato multifunction monitoring relays are widely trusted by panel builders, OEM machine manufacturers and industrial engineers to deliver dependable voltage, phase and neutral protection in demanding electrical installations.
