Description

Here's a detailed product description for a Single Phase Preventor, formatted in Markdown:

Robust & Reliable: Single Phase Preventor – Essential Motor Protection

Safeguard Your Valuable Three-Phase Equipment

Description:

In industrial, commercial, and agricultural settings, the continuous and reliable operation of three-phase motors is paramount. A sudden loss of one phase (single phasing) due to fuse blowing, loose connections, or power supply issues can lead to severe motor damage, including burnout, winding insulation breakdown, and costly downtime.

Our Single Phase Preventor (SPP) is a state-of-the-art protection device meticulously engineered to be the frontline defense for your three-phase motors and equipment. Designed for precision and reliability, the SPP continuously monitors all three phases (R, Y, B) of the incoming power supply. In the event of a phase loss, phase imbalance, or phase reversal, it instantly trips the motor starter (contactor), disconnecting the motor from the faulty supply and preventing irreparable damage.

Compact, easy to install, and built to withstand harsh operating conditions, our Single Phase Preventor is an indispensable investment for extending the lifespan of your motors and ensuring uninterrupted productivity.

Key Features:

• Comprehensive Phase Protection: Detects and protects against:
  • Phase Loss: Immediate tripping upon the complete loss of any one or more phases.
  • Phase Imbalance: Protects against unbalanced voltages across phases, which can lead to motor overheating.
  • Phase Reversal: Prevents motors from running in the wrong direction (if applicable for specific models/wiring).
• Instantaneous Response Time: Rapid detection and tripping ensure minimal exposure of the motor to harmful conditions.
• LED Indicators: Clear visual feedback for Power ON and Trip/Fault status, enabling quick diagnosis.
• Wide Voltage Operating Range: Designed to operate reliably across typical three-phase supply variations.
• Adjustable Trip Settings (Optional/Advanced Models): Allows customization of phase imbalance thresholds for specific application requirements.
• Automatic or Manual Reset: Selectable reset modes for convenience and safety.
  • Auto-Reset: Re-engages the motor starter once the fault condition clears (after a set delay).
  • Manual Reset: Requires manual intervention to re-engage, ideal for critical applications where inspection is needed.
• Auxiliary Relay Output: Features potential-free (NO/NC) relay contacts to interrupt the motor starter coil or for signaling purposes.
• Robust & Durable Enclosure: Housed in a flame-retardant, high-impact resistant casing, suitable for industrial environments.
• Easy Installation: Designed for standard DIN rail or screw mounting for quick and straightforward integration into control panels.
• Fail-Safe Operation: Engineered to ensure the motor is disconnected in the event of internal device failure or loss of control power.

Benefits:

• Prevents Costly Motor Burnout: The primary benefit is the direct protection against motor failure due to single phasing.
• Extends Motor Lifespan: By operating only under healthy power conditions, the motor's winding insulation and bearings are preserved.
• Minimizes Downtime: Proactive protection significantly reduces unexpected breakdowns and the associated production losses.
• Reduces Repair & Replacement Costs: Avoid expensive motor repairs, rewinding, or complete replacements.
• Enhances Operational Safety: Prevents potential hazards associated with overloaded or malfunctioning motors.
• Easy Troubleshooting: Clear indicators help maintenance personnel quickly identify the fault condition.
• Peace of Mind: Provides reliable, continuous monitoring, allowing you to focus on core operations.

Applications:

Our Single Phase Preventor is ideal for protecting any three-phase motor-driven equipment, including but not limited to:

• Industrial Machinery: Lathes, milling machines, grinders, conveyors, crushers, mixers.
• Pumps: Water pumps, sewage pumps, chemical pumps, deep well submersible pumps.
• Compressors: Air compressors, refrigeration compressors.
• HVAC Systems: Air handling units (AHUs), chillers, cooling towers.
• Agricultural Equipment: Irrigation pumps, feed mixers, grain dryers.
• Lifts & Hoists: Elevators, cranes, material handling systems.
• Any 3-Phase Motor Control Panel.

Technical Specifications (Typical):

• Input Voltage: 3-Phase, 415V AC (L1, L2, L3 + Neutral/Ground)
• Operating Voltage Range: 300V - 480V AC (Phase-to-Phase)
• Frequency: 50/60 Hz
• Sensing Type: Voltage-sensing across phases
• Output Contact: 1 C/O (SPDT) Potential-Free Relay Contact
• Contact Rating: 5A @ 250V AC resistive, 3A @ 28V DC
• Trip Settings:
  • Phase Loss: Instantaneous (<100ms)
  • Phase Imbalance: Adjustable from 10% - 40% (or fixed 25%)
  • Phase Reversal: Instantaneous
• Reset Type: Selectable Auto/Manual Reset
• Power ON Delay: ~2-5 seconds (to stabilize before monitoring)
• Trip Delay (Imbalance): ~2-5 seconds (to avoid nuisance tripping)
• Auto-Reset Delay: ~10-30 seconds (after fault clearance)
• Mounting: 35mm DIN Rail / Screw Mount
• Terminal Type: Screw Terminals
• Operating Temperature: -10°C to +55°C
• Storage Temperature: -20°C to +70°C
• Humidity: 95% RH (non-condensing)
• Protection Degree: IP20 (Terminals), IP30 (Enclosure)
• Dimensions (approx.): 75mm (H) x 45mm (W) x 100mm (D)
• Material: ABS / Polycarbonate Housing

Why Choose Our Single Phase Preventor?

Invest in superior motor protection. Our Single Phase Preventor combines advanced sensing technology with rugged construction, ensuring accurate detection and reliable operation when it matters most. With easy installation and intuitive indicators, it's the smart choice for safeguarding your critical three-phase assets and maintaining operational continuity.

Don't leave your valuable motors vulnerable to the dangers of single phasing. Secure your equipment and your peace of mind.

Contact Us Today for a Quote! Learn More About Our Motor Protection Solutions