The Unipower HPL500 is a high-performance load monitor capable of measuring true motor power with internal scaling up to 40A. Designed for direct connection to 3-phase or single-phase systems, it calculates shaft power using programmable motor efficiency and supports two independently configurable alarm limits.
🔧 Technical Highlights:
- Voltage Range: 1x100-1x400V, 3x100-3x575V AC
- Current Range: Internal 0.5-40A, or external CT up to 600A
- Outputs: 2 relays (Max/Min), 4-20mA analogue
- Shaft Power Calculation: P2 = P1 - Po, using programmable efficiency
- Mounting: DIN rail or wall mount
✅ Benefits:
- Wide voltage and current adaptability
- Internal peak detection for easy setup
- Auto shutdown and dual setpoints
🚀 Applications:
- Motors with variable load
- Industrial pumps, crushers, mixers
- Power-aware automation systems
Versatile load supervision with optional shaft power feedback and MODBUS expansion via HPL500-MB.
FAQs
- Q: How is HPL500 different from HPL500MB?
A: HPL500 provides the same core kW based load monitoring and relay protection but without the Modbus RTU interface. Use HPL500MB if you need serial communications as well as analogue output.
- Q: Can HPL500 calculate shaft output power?
A: Yes. HPL500 can be configured to calculate and display shaft output power P2 based on modelled motor efficiency.
- Q: Where should I install HPL500 in the circuit?
A: HPL500 is normally installed ahead of any frequency inverter on a balanced three phase supply so it sees the motor input power directly.