L&T LT CT Energy Meter

Core Features and Specifications:

• Type: 3-phase, 4-wire CT-operated (requires external current transformers)

• Voltage Range: 230/240V (phase-neutral)

• Current Range: -/5A (standard CT secondary), with variants up to 10A depending on configuration

• Accuracy Class: 0.5s (for LT), ensuring reliable revenue-grade measurement

• Frequency: 50 Hz ±5%

• Wiring: 3-phase, 4-wire; compatible with LV and HV configurations

• Functions:

  • Measures kWh/kVAh (import/export), maximum demand, power factor, time-of-day tariffs, and load surveys

  • Tamper event detection and logging

  • Backlit LCD display for clear parameter/event viewing

  • DLMS and RS232/RS485 or optical communication for remote/local reading

• Compliance: IS 14697, IS 15959, IEC 62052-22, IEC 62053-24 (DLMS Indian companion standard)

• Build: Engineering plastic enclosure, compact (typically 191 x 255 x 82 mm), weight ~1.2 kg

• Operating Environment: -10°C to +55°C, humidity up to 100% non-condensing

• Applications:

  • Utilities (transformer and boundary metering), industrial and commercial establishments

  • Suitable for efficient billing, energy auditing, and load/MD monitoring

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