Technical Specification for Multifunction Power Meter
1. General Requirements
- Product Type: Multifunction AC power quality analyzer and meter.
- Manufacturer / Brand: IME (Legrand Group).
- Model Range: NEMO 96 HD / NEMO 96 HD+.
- Mounting Type: Flush-mounting on control panels or switchboard doors.
- Front Dimensions: 96 x 96 mm.
- Panel Cut-out: 92 x 92 mm.
- Display Type: Backlit LCD with high resolution and adjustable contrast.
2. Measurement Parameters and Performance
- Voltage (U): Phase-to-Neutral, Phase-to-Phase, Min/Max values, Voltage Unbalance.
- Current (I): Phase currents, Neutral current, Max demand, Peak values, Current Unbalance.
- Power: Active (kW), Reactive (kVAR), Apparent (kVA) per phase and three-phase total.
- Energy: Active energy (kWh), Reactive energy (kVARh) with 4-quadrant bidirectional metering.
- Power Quality: Total Harmonic Distortion for voltage and current (THD U, THD I).
- Power Factor: Displacement power factor (cosφ) and total Power Factor (PF) per phase and total.
- Frequency: System frequency range from 47 Hz to 63 Hz.
- Operating Hours: Integrated non-resettable run hour counter.
3. Electrical Characteristics and Inputs
- Accuracy Class: Class 0.5S for Active Energy (IEC 62053-22), Class 0.5 for Voltage/Current.
- Network Types: Single-phase, 3-phase 3-wire, or 3-phase 4-wire (balanced or unbalanced).
- Voltage Input Range: Direct connection up to 500 Vac (Phase-to-Phase).
- Voltage Transformer (VT) Ratio: Programmable primary and secondary values.
- Current Input Range: External Current Transformer (CT) connection via standard -/1A or -/5A secondary.
- Current Transformer (CT) Ratio: Programmable primary values up to 9999A.
4. Auxiliary Power Supply
- Standard AC/DC Version: 80 to 265 Vac (50/60Hz) or 110 to 300 Vdc.
- Low Voltage DC Version: 11 to 60 Vdc.
- Power Consumption: Maximum 5 VA.
5. Modularity and Communications
- Expansion Slot Capacity: Supports up to 4 plug-in modules on the rear side.
- Communication Options: RS485 / RS232 (Modbus RTU / Jbus protocol), Profibus DP, LonWorks, BACnet, Ethernet (Modbus TCP with built-in WebServer).
- Pulse Outputs: Programmable optoisolated transistor or relay outputs for energy pulses or alarm thresholds.
- Analog Outputs: Configurable 0-20mA, 4-20mA, or 0-10V outputs for remote telemetry.
- Digital Inputs / Outputs: Status monitoring inputs and programmable alarm relays.
6. Environmental and Mechanical Data
- Operating Temperature: -5 °C to +55 °C.
- Storage Temperature: -25 °C to +70 °C.
- Front Panel Protection: IP54 or IP65 with additional dedicated waterproof gasket.
- Rear Case Protection: IP20 protection rate.
- Housing Material: Self-extinguishing thermoplastic.
- Standards Compliance: EN 61010-1, EN 61000-6-2, EN 61000-6-4, IEC 62053-22, IEC 62053-23.
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