Think that your critical production line suddenly shuts down due to phase failure. The cost? Thousands of dollars per hour in lost productivity, potential equipment damage and the scramble to get everything back online.
Phase Failure Protection Matters
In our six decades of protecting industrial assets, we’ve witnessed countless preventable failures that could have been stopped with proper phase monitoring. Unbalanced voltage conditions, phase failures and sequence reversals don’t just cause inconvenience they destroy expensive motors, disrupt production schedules and create safety hazards that no facility manager should ignore.
The S2 VMR Phase Failure Relay isn’t just another piece of equipment it’s your first line of defense against electrical chaos. Operating on rigorous IEEE/NEMA standards for unbalanced detection, this compact powerhouse stands guard 24/7, monitoring every fluctuation in your electrical system.
Five Critical Threats Your S2 VMR Phase Failure Relay can Eliminates
Every industrial facility faces these electrical dangers daily, often without realizing the risks until disaster strikes:
1. Unbalanced Voltage Conditions
When voltage phases become unbalanced, motors draw excessive current, overheat, and fail prematurely. The S2 VMR detects imbalances from 2% to 20%, providing adjustable protection that matches your specific requirements.
2. Phase Failure Conditions
A single lost phase can cause motors to operate on reduced phases, leading to immediate overheating and catastrophic failure. Our relay provides instant detection and protection.
3. Phase Sequence Reversal
Wrong rotation direction can damage pumps, conveyors, and other directional equipment. The S2 VMR provides instant protection against reverse rotation.
4. Under & Over Voltage Conditions
Voltage fluctuations outside acceptable ranges stress equipment and reduce lifespan. With ±2% accuracy for 415VAC and 240VAC models, protection is precise and reliable.
5. Under & Over Frequency Conditions
Fixed protection at 47 Hz (under) and 64 Hz (over) ensures your equipment operates within safe frequency ranges.
Expert Insight: In our experience, 80% of motor failures in industrial settings can be traced back to electrical supply issues that proper phase monitoring could have prevented. The S2 VMR pays for itself with the first failure it prevents.
Comprehensive Monitoring Capabilities
| Parameter | Specification | Accuracy |
|---|---|---|
| Frequency Range | 48 - 63 Hz | Fixed trip points: 47 Hz / 64 Hz |
| Output Contacts | 2CO (Change-over) | 5 Amp, 240VAC resistive |
| Unbalance Setting | 2% to 20% | ± 5% of full scale |
| Power-on Delay | 5 seconds | ± 1 second |
| Trip Time Delay | UB/SP/UV/OV: 1-10 sec | ± 5 sec of full scale |
Smart Programming for Precise Protection
The S2 VMR features intuitive front-panel programming that puts control at your fingertips. With dedicated push buttons and adjustment knobs, you can fine-tune protection parameters without external programming tools or complex software.
Reset Options for Operational Flexibility
Choose between automatic and manual reset modes to match your operational requirements:
Unbalance Reset Gap: 20% ± 5% ensures stable operation
UV/OV Reset Gap: 3% ± 1% prevents nuisance tripping
Built for Harsh Industrial Environments
Industrial environments don’t forgive weakness. The S2 VMR’s robust ABS/PC-ABS enclosure withstands the punishment of real-world applications:
Temperature Range: -5°C to +60°C operational range
Humidity Resistance: Up to 95% RH without condensation
Compact Design: S2 Series form factor fits standard panels
Built-in Auxiliary Supply: Powered directly from three-phase input
Why Choose Minilec’s S2 VMR Phase Failure Relay?
With over 60 years of protecting critical industrial assets, Minilec understands what works in real-world applications. The S2 VMR represents decades of field experience, continuous improvement, and unwavering commitment to equipment protection.
Proven Reliability
Thousands of installations worldwide prove the S2 VMR’s effectiveness across diverse industries and applications. From pharmaceutical manufacturing to heavy industry, our relays provide dependable protection day after day.
Cost-Effective Protection
Compared to the cost of a single motor failure or production shutdown, the S2 VMR provides exceptional value. It’s not an expense it’s insurance for your critical assets.
Expert Support
Minilec’s technical support team brings decades of application experience to help you optimize protection strategies for your specific requirements.
