The Unipower HPL110.380-440 is a compact power-based load monitor for 3-phase AC motors. It uses real-time kW measurement based on the formula P = √3 x U x I x Cosϕ to supervise mechanical load conditions. Peak detectors and adjustable Min/Max limits enable precise control, while built-in current conversion supports up to 8A directly and above using a current transformer.
🔧 Technical Highlights:
- Measuring Voltage: 3 x 380-440V AC
- Current Range: Up to 8A internal, external N/1 or N/5 CT supported
- Trip Limits: 5-100% (Max), 0-100% (Min)
- Timers: Start (Ts) and Reaction (Tr) adjustable 0.1-25s
- Output: Single relay, Min or Max configurable
✅ Benefits:
- True power-based protection, not affected by Cosϕ or voltage variations
- Peak detection for easy setpoint tuning
- Adjustable hysteresis for use with auto-reset mode
🚀 Applications:
- Pumps and fans
- Mixers and conveyors
- General industrial motor loads
Provides reliable monitoring even on variable speed drives and distorted current waveforms. Unlike Cosϕ and current detection, kW is linear with motor load and impervious to Cosϕ and supply voltage variations.