Description

The Multi-Circuit Meter (MCM) is a kilowatt hour (kWh) energy and power meter that communicates Modbus® on a EIA RS-485 or a TCP network, measures 1, 2, or 3 phases with voltages from 120 to 600 volts Vac and currents from 5 to 6,000 amps in delta (phase to phase) and wye (phase to neutral) configurations. The MCM can be order in blocks of 12 from 12 to 84 CT inputs (12, 24, 36, 48, 60, 72, 84).

The MCM includes a NEMA rated enclosure, a DC power supply, circuit protection (fuses or circuit breaker), and terminal blocks, all prewired as a UL 508A Listed industrial control panel, ready for mounting.

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Features

  • Up to 84 single-phase or 28 three-phase circuits
    • Available in blocks of 12 to 84 ct inputs (12, 24, 36, 48, 60, 72, 84)
  • Modbus/TCP over Ethernet or Modbus/RTU over RS-485
  • Revenue grade system accuracy with Accu-CT class C0.6 or better
    • ANSI C12.20 class 0.5 and ANSI C12.1 accuracy
  • One model can measure 100 to 600 Vac, single-phase or three-phase, wye or delta services
  • Modbus registers can reverse CT polarity and change the assignment of CTs to voltage phases to correct wiring errors
  • Modbus registers can assign different CT amps for each input
  • Diagnostic LEDs for each CT input and for the RS-485 Modbus communication
  • Works with any 0.333 Vac current transformers and milliamp output CTs
  • Line powered from 100 to 600 Vac
  • UL 508A, FCC, RoHS
  • For a full list of features see the manual.

Measurements

  • True RMS Energy: kWh (phase A, B, C, and sum of phases)
  • True RMS Power: Watts (phase A, B, C, and sum of phases)
  • Reactive Energy: kVAR-hours (phase A, B, C, and sum of phases)
  • Reactive Power: VARs (phase A, B, C, and sum of phases)
  • Power Factor: (phase A, B, C, and sum of phases)
  • RMS voltage (phase A, B, C, and average)
  • RMS current (phase A, B, C, and average)
  • AC Line Frequency
  • Demand and peak demand
  • And 90+ additional measurements

Options

Many of the MCM registers can be custom configured at the factory for an additional programming charge. See the MCM manual (pdf) for more information about available options. Some options cannot be ordered on line. Please contact our Sales Team at sales@ctlsys.com or call 303-444-7422 to request a quote or place an order for meters with options.

  • Option CT=xxx – Pre-assign xxx as the global valueCtAmps
  • Option TCP– Configure the communications to Modbus TCP.
  • Option MA – Nominal Input Current (At CT Rated Current): 40 mA RMS