Comprehensive 3-Phase Monitoring
Measures V, A, kW, kVA, kVAR, kWh, PF, Hz, and THD across all 3 phases simultaneously — from a single panel instrument replacing multiple meters.
Energy Meter
LG6400P Energy Meter
A 3-phase multifunction energy meter measuring voltage, current, power, energy, and harmonics via 128 samples/cycle True RMS — with RS485 Modbus RTU for seamless IoT integration into DG sets, LT panels, and MCC panels.
RS485 Modbus RTU
Class 0.5 Accuracy
True RMS
3-Phase 4-Wire
Supply Voltage
80–300V AC
Sampling
128 /cycle
Accuracy
Class 0.5 IEC 62053
Sampling
128 samples/cycle
Panel Size
96 × 96 mm
Interface
RS485 Modbus RTU
Why it is useful
One meter for every electrical parameter your operation needs
LG6400P replaces multiple individual instruments — voltmeter, ammeter, power meter, energy meter, and power quality analyser — in a single 96×96 mm panel unit with Modbus RTU for IoT connectivity.
RS485 Modbus RTU Integration
Standard Modbus RTU over RS485 connects LG6400P to IoT gateways, PLCs, DCS, and SCADA systems — supporting up to 247 devices on a single bus.
Class 0.5 True RMS Accuracy
128 samples/cycle simultaneous sampling with ±1% Class 0.5 accuracy ensures reliable readings even with non-linear and variable industrial loads and harmonics.
Use Cases
Where LG6400P
Where LG6400P
fits well
Install LG6400P where a single panel instrument needs to cover all electrical parameters — from billing-grade energy measurement to power quality analysis.
- DG Set (generator) monitoring — load, energy output, PF, frequency, and runtime via Aether IoT integration.
- LT panels and MCC panels in industrial facilities — monitoring feeder loads, consumption, and power quality.
- Distribution boards in commercial buildings — tenant sub-metering and energy billing verification.
- Renewable energy systems — solar inverter output monitoring and grid import/export measurement (4-quadrant energy).
- Motor and pump panels — load efficiency monitoring with programmable slots for Watts and Current across 5 time slots.
Features and Specifications
Product Specifications
LG6400P measures and communicates complete 3-phase electrical parameters via Modbus RTU. The details below highlight specifications most relevant for panel installation and IoT integration planning.
Electrical Measurement
| Phases | Single Phase (1P+N) / 3-Phase 3-Wire / 3-Phase 4-Wire |
| Configuration | Field programmable — Star (Wye), Delta, Single Phase |
| Rated voltage | 50 – 600V LL (True RMS) |
| Rated current | 10 mA – 6A (via CT, programmable up to 2000 MVA) |
| Frequency | 45 – 65 Hz |
| Sampling rate | 128 samples/cycle (simultaneous V & A) |
| Measurement type | True RMS, 1-second update, 4-quadrant power & energy |
| Accuracy class | Class 1.0 (IEC 62053-21) standard; Class 0.5S / 0.2S optional |
| Permissible overload | 120% voltage; 200% current (momentary) |
Parameters Measured
| Voltage | V, V1, V2, V3, V12, V23, V31 + unbalance |
| Current | A, A1, A2, A3 + unbalance |
| Power | kW, kVA, kVAR (3-phase + individual) |
| Power Factor | PF, PF1, PF2, PF3 |
| Frequency / RPM | Hz, RPM, Phase angle |
| Energy (import) | kWh, kVAh, kVARh (inductive & capacitive) |
| Energy (export) | kWh export, kVAh export, kVARh export |
| Harmonics (THD) | Voltage & Current THD up to 15th harmonic |
| Demand | kW, kVA, kVAR demand & max demand (sliding) |
| Other | CO₂ emissions, ON hours, power interruptions count |
RS485 / Modbus
| Protocol | Modbus RTU |
| Interface | RS485 (optically isolated) |
| Device ID | 1 – 247 (programmable) |
| Parity | Odd, Even, None (Even preferred) |
| Baud rates | 2400, 4800, 9600 (preferred), 19200, 38400 bps |
| Isolation | 2000V AC for 1 minute (communication vs. other circuits) |
| Front LED pulse | 16,000 imp/kWh |
| IoT integration | Via TRB145 RS485/Modbus gateway to Aether platform |
IoT Setup with Aether
| Gateway device | TRB145 RS485/Modbus IoT gateway (Teltonika) |
| Multi-meter bus | Up to 247 LG6400P meters on single RS485 loop |
| Platform | Aether Energy Monitoring dashboard |
| Data available | kWh, kW, kVAR, V, A, PF, Hz per feeder/panel |
| Alerts | Demand threshold, over-voltage, under-voltage alerts |
| Register map | Dynamic register map — programmable address & parameter sequence |
Physical & Power
| Panel cutout | 96 × 96 mm |
| Overall dimensions | 96 × 96 × 90 mm (W × H × D) |
| Weight | 275 g (unpacked), 350 g (packed) |
| Display | 3-row LED, 14mm height, 4 digits per row (alpha-numeric) |
| Auxiliary supply | 80 – 300V AC/DC (40–300V AC/DC optional) |
| Power consumption | 4 VA max |
| Protection | IP51 (IP54 front fascia optional), Double Insulation |
| Wire gauge | 11 AWG; Terminal torque: 1 N-m |
Environmental & Standards
| Operating temp | -10°C to +55°C |
| Storage temp | -25°C to +70°C |
| Humidity | 5% to 95% non-condensing |
| Altitude | Below 2000 m |
| Safety standard | IEC/EN 61010-1 Ed.3, CAT III 300V LN / 600V LL, Class II |
| Energy standard | IEC/EN 62052-11, UL 61010-1 |
| EMC | IEC 61000-4-2/3/4/5/6/8/11, CISPR-22 |
| Certification | CE (Intertek), Class I & II metering |
Aether Integration
Connect energy meter data to the Aether platform
Aether connects LG6400P Modbus data — via a TRB145 RS485 gateway — into energy dashboards with live kWh, load trend reports, demand alerts, and multi-site energy visibility.
- Live electrical parameters — voltage, current, kW, PF, and frequency — on Aether energy dashboards per feeder or panel.
- Energy consumption trends — hourly, daily, and monthly kWh tracking for billing reconciliation and efficiency analysis.
- Demand alerts — notifications when kW or kVA demand exceeds configured thresholds to avoid excess tariff charges.
- Multi-panel deployment — read from multiple LG6400P meters via a single RS485 bus (up to 247 devices) using the TRB145 gateway.
FAQ
Common questions about LG6400P
LG6400P measures voltage (3-phase + line-to-line), current, kW, kVA, kVAR, kWh (import/export), kVAh, kVARh, power factor, frequency, RPM, phase angle, THD up to 15th harmonic, demand, max demand, CO₂ emissions, and power interruption count — all from a single 96×96 mm panel instrument.
LG6400P communicates via RS485 Modbus RTU. It connects to the Aether energy monitoring platform through a TRB145 RS485/Modbus IoT gateway. Up to 247 meters can be daisy-chained on a single RS485 bus, with each meter addressed uniquely (1–247) for multi-panel monitoring from a single gateway.
The standard LG6400P is Class 1.0 per IEC 62053-21. Class 0.5S (IEC 62053-22) and Class 0.2S options are available for billing-grade applications. The meter uses 128 samples/cycle simultaneous True RMS measurement for accuracy even with non-linear loads and harmonics.
Yes. LG6400P is designed for use with external CTs (current transformers). The CT and PT ratios are field-programmable up to 2000 MVA — making it compatible with virtually any existing MV/LV installation without rewiring the power circuit.
LG6400P fits standard 96×96 mm panel cutouts — suitable for DG set control panels, LT distribution panels, MCC (motor control centres), feeder panels, distribution boards, and solar inverter panels. Its wide auxiliary supply range (80–300V AC/DC) allows installation across different voltage systems without a separate power supply.
Need help choosing the right tracker?
Share your panel type, number of meters, and energy monitoring goals. Aether can design the LG6400P + TRB145 gateway solution for your site and connect it to the energy monitoring platform.