OVERVIEW
Prometer 540 is a next-generation grid meter for high-value energy transfer and settlement points. DLMS/COSEM and Modbus run simultaneously on both RS-485 and Ethernet, and two hot-standby communication modules, for example IEC 61850 or a 4G modem, add redundant data paths.
Class 0.1S / 0.2S / 0.5S
DLMS + Modbus on RS-485 & Ethernet
Hot-Standby IEC 61850 / 4G
Class 0.1S / 0.2S / 0.5S
DLMS + Modbus on RS-485 & Ethernet
Hot-Standby IEC 61850 / 4G
TYPICAL APPLICATIONS
Settlement Metering
Revenue Metering
Grid Substations
High-Value Energy Transfer
Substation Automation
Product Details
Prometer 540 is a next-generation grid meter designed for high-value energy transfer points where exceptional accuracy, revenue protection and secure system integration are essential. Its modular communication architecture supports modern AMR, AMI and substation automation environments.
Key Features
- Accuracy class 0.1S, 0.2S or 0.5S in accordance with IEC 62053-22
- Built-in Ethernet, RS-485 and RS-232 ports
- Support for two hot-standby communication modules, with options including IEC 61850 and a 4G modem
- DLMS/COSEM and Modbus simultaneously on the RS-485 and Ethernet ports
- Optional IEC 61850 Edition 1 and 2 support via communication module
- Advanced DLMS security with authentication and data encryption
- Voltage and current harmonics up to the 50th order
- Wide-range auxiliary supply with AC/DC and self-powered options
- Powered serial port for third-party modem integration
- Advanced tamper and anomaly event recording
- Multilingual graphical display
Technical Specifications
Measurement
Accuracy class0.1S / 0.2S / 0.5S (IEC 62053-22); MID Class C (EN 50470-3)
Connection typeHV3 / HV4 / LV4
Voltage range57.7–240 V (L-N) / 100–415 V (L-L) 3P4W; 100–120 V (L-L) 3P3W
Current range1–10 A (configurable)
Frequency50 / 60 Hz
Power qualityHarmonics up to 50th order, THD, sag, swell, unbalance, interruptions
Electrical
Power supplySelf-powered (VT) and/or auxiliary 48–240 V DC or 110–240 V AC
Inputs / outputs4 fixed pulse outputs + 4 configurable pulse inputs/outputs
Communication
PortsEthernet, RS-485, RS-232, optical port
ProtocolsDLMS/COSEM and Modbus simultaneously on RS-485 and Ethernet; optional IEC 61850 (Ed. 1 & 2)
Optional modules2 hot-pluggable module slots (e.g. IEC 61850, 4G modem, Ethernet, RS-485, RS-232)
SecurityDLMS authentication and data encryption
Data & Software
Load profiles2 data loggers, up to 50 parameters each, 1–60 min integration
Tariffs16 TOU tariffs, 16 seasons, 53 billing dates, DST
Mechanical & Environmental
DisplayGraphical backlit display, multilingual
Ingress protectionIP54
Operating temperature-10 °C to +55 °C
Dimensions / weight276 × 176 × 90 mm (H × W × D), approx. 2 kg
Compliance
StandardsIEC 62052-11, IEC 62053-22, IEC 62053-24, IEC 62052-31, IEC 62059-31-1, IEC 62056-21, IEC 61850 (optional), EN 50470-1/-3 (MID), CE, UKCA
Warranty
Manufacturer warranty10 years (Secure Meters)
Downloads
Prometer 540 DatasheetDatasheet · PDF · EN · 259 KB
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