Schneider LT CT Energy Meter

Schneider Electric offers a range of LT CT (Low Tension, Current Transformer) Energy Meters designed for high-accuracy energy measurement in three-phase, four-wire systems where the current is measured via external CTs. These meters are widely used in industrial, utility, and commercial applications requiring reliable billing, energy monitoring, and data logging.

Key Features and Specifications of Schneider LT CT Energy Meters:

• Measurement Type: Three-phase, four-wire LT CT-operated energy meters

• Voltage Range: Typically 415V AC (Phase-to-Phase), 230V AC (Phase-to-Neutral)

• Current Range: -/5A CT secondary current input (some models support 1A or 10A)

• Accuracy Class: Class 0.5S (active and reactive energy), compliant with IEC 62053-22

• Display: Backlit LCD showing active energy (kWh), reactive energy (kVARh), apparent energy (kVAh), voltage, current, power factor, frequency, maximum demand, and load profiles

• Communication: Modbus RTU (RS485), M-Bus, pulse outputs, and optical interface for remote data acquisition and integration with AMI/SCADA systems

• Data Logging: Load survey capable, with up to 90 days of 15-minute interval data storage

• Tariff Management: Multiple tariff rates, time-of-day metering, demand and block energy measurement

• Tamper Detection: Includes detection for phase loss, current reversal, tampering attempts, cover opening, and magnetic interference

• Operating Temperature: -10°C to +55°C

• Standards Compliance: IEC 62052-11, IEC 62053-22, IS 15959, IS 14697, and DLMS/COSEM for communication protocols

• Installation: DIN rail mountable with compact dimensions suitable for panel installations

Popular Models:

• iEM3250: CT-operated, Modbus RTU communication, Class 0.5s accuracy, supports advanced features like multi-tariff, demand, and energy quality monitoring

• iEM3215: Multi-tariff CT meter suitable for integrated smart metering solutions

• iEM3200: Sub-billing and partial measured energy applications