TECHNICAL SPECIFICATION SHEET
CUMULUS
SERIES-G3
High-precision multi-phase smart metering node designed for industrial-grade data telemetry. Features integrated LoRaWAN networking and strict ±0.1% accuracy tolerance under peak loads.
Op_Voltage
110V - 400V AC
Max_Current
80A / Phase
Comm_Protocol
LoraWAN + MQTT
Security_Level
AES-128 & ED25519 cryptography
HARDWARE PARAMETERS
REV_2.4.1ELECTRICAL RATINGS
Operating Voltage (L-N)180-240V
Operating Voltage (L-L)400-480V
Self Consumption≤ 2W
Single phase Maximum Current (Imax)80A
Polyphase Maximum Current300A per phase
Frequency50Hz / 60Hz ±5%
ENVIRON & EXTERNALS
Operating Temperature-20°C to +80°C
Storage Temperature-40°C to +85°C
Humidity≤ 95% non-condensing
Protection RatingIP54
CT Primary Range1-300A
CT Secondary Range5A
LABELLING &
PORT IDENTIFICATION
- LoRaWAN antenna port - install before power on
- LED Displays (Power, Status, Relay, COMM indicators)
- Single Phase IN via 25mm cable gland (Live & Neutral)
- Single Phase OUT via 25mm cable gland (Live & Neutral)
- Polyphse Ports (see wiring diagram)
- Ventilation slot - maintain clearance
- DIN Rail Mount
METER LABELLING
SCALE: 1:2 (A4)
Installation Guide
Remove the metal terminal cover by unscrewing the fasteners before wiring. The meter features a standard DIN rail mounting groove (item 7) compatible with 35mm DIN rails. For wall mounting, use the provided bracket hardware and ensure the enclosure is level and securely fastened.
- Port 5 activated for voltage probes and external CT sensors
- External CT: primary 1-300A, secondary 5A output only
- Signal control pins activated for external Contactor/ATS
- Internally connected to SSR control signal
- Supports 3-Phase 4-Wire direct connect up to 300A
Wiring Diagram
CUMULUS METERING UNIT
FIG. 1 / BOTTOM VIEW

IP54_RATEDUV_RESISTANT
FIG. 2 / THREE PHASE CONNECTION

TAMPER_SEALSOPTICAL_PORT
PROCUREMENT & INSTALLATIONREADY TO DEPLOY
READY TO DEPLOY
AT SCALE?
Our field engineering team is available for technical consultation, network topology planning, and pilot phase deployment support.
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