THREE-PHASE STS SMART PREPAID ELECTRIC METER
General View
The S34U18 is a robust, high-precision three-phase smart prepaid meter designed for direct connection in low-voltage networks. Engineered for secure energy management, advanced tamper detection, and modular communication, it supports multi-tariff billing, remote recharge, and real-time diagnostics. Fully compliant with IEC and STS standards, it is ideal for utility-grade deployments across residential, commercial, and industrial sectors.
METER TYPE :
3-phase, 4-wire, direct-connected
ACCURACY CLASS :
Active Energy – Class 0.5, Reactive Energy – Class 2.0
VOLTAGE RATING :
3×220/380V (operating range: +30%/−40%)
CURRENT RATING:
5(100)A
FREQUENCY:
50 Hz ±5%
POWER FACTOR RANGE:
Lag – Unity – Lead
DISPLAY:
Industrial-grade LCD with Arabic/English interface, 160° viewing angle
BATTERY BACKUP :
RTC supported for 15 years during outages
PROTECTION:
IP54, lightning protection per IEC 1036
MATERIAL :
Fire-resistant polycarbonate (base, cover, terminal)
RELAY :
Magnetic latching relay, 120A max, 3 poles (UC3)
AUDIBLE ALARM :
Built-in buzzer for low credit alerts
METER LIFETIME :
>15 years (MTTF)
- Real-time monitoring of voltage, current, and power factor
- Instantaneous & cumulative energy registers
- Tamper detection: cover open, magnetic interference, reverse current, bypass, overload
- Event logging with timestamp
- Load profile recording – 4 Configurable Channels
- Relay control: remote/manual/disconnect logic
- Self-diagnostics & alarm filtering
- Daylight saving time adjustment & calendar scheduling
- Dual-source metering (EB/DG) for residential complexes
- Near-Infrared
- RS485 (DLMS/COSEM HDLC)
- GPRS/3G/4G/NB-IoT (Modular)
- Ethernet & Optical Fiber (Optional)
- IDIS Certified for interoperability
- Remote firmware upgrade & event push to HES
SECURITY & COMPLIANCE
- AES-GCM-128 encryption, ECC256 for public networks
- DLMS/COSEM compliant
- Multi-level password access (A1–A4)
- Secure token exchange per IEC 62055-41
- Event filtering, tamper latching, and programmable thresholds
- Complies with: IEC 62052-11 / IEC 62053-21 / IEC 62053-24 / IEC 62055-41
- IEC 62056 series (data exchange)
- EN 50470-1 / EN 50470-3
- ISO 9001 / ISO 14000
PREPAYMENT & TARIFF MANAGEMENT
- STS-Compliant Token Recharge
- Up to 8 Tariff Rates with 12 time periods
- TOU & Step Tariff Support
- Emergency Overdraft & Friendly Mode
- Balance & Overdraft Alarms (Visual & Audible)
- Monthly & Daily Settlement with 12-period history
- Token Types: Recharge, Key Change, Tariff Update, Event Clear, Friendly Mode, Holiday Mode
(L X W X H) 250 mm x 170 mm x 79 mm
