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UMT 1

UMT 1

UMT 1

Applicatons

The UMT 1 is a measuring transducer for true RMS values. The UMT 1 can measure an electrical three-phase system with current and voltage measuring inputs. The primary measured values are calculated and displayed on the two-line, 16 character LC Display, and also transmitted by either analog outputs (configurable as -20 to 20 mA, 0 to 20 mA, or 4 to 20 mA) or a communication interface to a higher level-control system.

The primary measured values of voltage and current are used to calculate the values for real, reactive, and apparent power, power factor (cosphi), kWh, and kvarh. The kWh and kVarh can also be transmitted by using an pulse output.

The list of measured values includes

  • Measured
    • Voltage
      • Wye: VL1N / VL2N / VL3N
      • Delta: VL12 / VL23 / VL31
    • Frequency fL123
    • Current IL1 /IL2 /IL3
  • Calculated
    • Average voltage VØL123 / Vmin / Vmax
    • Average current IØL123 / Imin / Imax
    • Real power PTotal/ PL1 / PL2 / PL3
    • Reactive power Qtotal
    • Apparent power Stotal
    • Power factor cosfL1
    • Active energy kWhpositive/negative
    • Reactive energy kvarhleading/lagging

Description

There are different UMT 1 packages to choose from:

Package UMT 1/A3

  • 3× true RMS voltage sensing
  • 3× true RMS current sensing
  • Class 0.5 accuracy
  • 3 config. analog outputs (20 mA)
  • 1 config. pulse output for kWh/kvarh
  • Two-line LC display

Package UMT 1/A3SU

  • 3× true RMS voltage sensing
  • 3× true RMS current sensing
  • Class 0.5 accuracy
  • 3 config. analog outputs (20 mA)
  • 1 config. pulse output for kWh/kvarh
  • Two-line LC display
  • RS-485/Modbus RTU

Package UMT 1/A6

  • 3× true RMS voltage sensing
  • 3× true RMS current sensing
  • Class 0.5 accuracy
  • 6 config. analog outputs (20 mA)
  • 1 config. pulse output for kWh/kvarh
  • Two-line LC display

UMT 1

Measuring Transducer

Product Specification 37168E

Features

  • True RMS sensing
  • Class 0.5 accuracy
  • All values displayed on LCD and through 20 mA analog output
  • Front panel configurable 1)
  • Microprocessor technology for accurate, repeatable and reliable operation
  • Optional wiring configurations for either single phase, three phase, or a combination of both
  • RS-485 Modbus RTU Slave communication
  • UL/cUL Listed
  • CE marked

Fact sheet

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