COMBIMETER
True RMS Digital 7 in 1 Meter – Three Phase
DESCRIPTION

The meter incorporates micro-controller system, which samples voltage and current signals and computes Voltage, Frequency, Current, Active Power and Reactive Power & Apparent Power. Power Factor is computed by power division method. These parameters are displayed on Four Digit, Seven Segment, LED display. With MODE push button respective phases (L1, L2, L3) & System (Σ) are selected. A single 7 in 1 meter can replace 11 meters viz. 3 Ammeters, 3 Voltmeters, 1 Frequency meter & 1 Three phase meters each of kW, kVar, kVA & PF. Thus saving cost & immense panel space.


FEATURES

‘‘SELECT’ push-button on front side to select various parameters i.e. Voltage (phase to neutral / phase to phase), Frequency, Current, Power Factor, Active Power, Reactive Power & Apparent Power.

‘MODE’ push-button on front side to select indication on respective phases i.e. L1, L2, L3 and Summation Σ.
One meter replaces minimum of eleven meters on panel.
Complex wiring & panel space required are reduced.
‘0.000’ indication when auxiliary supply is on.
‘PFEr’ indication when input current is not applied.
‘ErLo’ indication when input signal voltage is not applied.
– – – –“ Frequency indication on Σ mode when any one of phase voltage signal is absent.
Sign Indication depend upon current direction,
        “ “ sign / no sign indication for EXPORT / IMPORT respectively for Active / Reactive Power.
        “ “ sign / no sign indication for LAG / LEAD respectively for Power Factor.
Auto scrolling by pressing ‘MODE’ & ‘SELECT’ push buttons simultaneously.

ELECTRICAL SPECIFICATIONS
TYPE :
: 3 Ph – 2 EL – 3W / 3 Ph – 3 EL – 4 W
SENSING : True RMS
INPUT VOLTAGE : 110 V / 440 V
INPUT CURRENT : 1A / 5A (2% to 100% of nominal)
OPERATING POWER FACTOR : 0.1 (Lag ) - 1.00 - 0.1 (Lead)
OPERATING FREQUENCY : 45 Hz to 55 Hz.
ACCURACY : Voltage / Current / Power
: ± 0.5% / 1.0% of Full-scale
  Frequency : ± 0.2% of Centre Frequency
  Power Factor : ± 2°
 • AUX. SUPPLY
: 110 / 240V ? 10%, 50 / 60Hz
VA BURDEN : Voltage
: 0.5 VA
  Current : 0.5 VA
  Aux. Supply : 5 VA
DISPLAY COLOUR : Red
DISPLAY TYPE : 4 Digit, 7 Segment, LED display
INSULATION RESISTANCE
: Greater than 20M? at 500VDC
DIELECTRIC TEST : 2kV RMS for 1 min.
OPERATING TEMPERATURE : 0° C to 55°C.
STORAGE TEMPERATURE : -20° C to 70°C.
HUMIDITY : Upto 95% RH.

MECHANICAL SPECIFICATIONS
DataSheet TYPE MECHANICAL SPECIFICATION
Model System Acc. Class Size (mm) Weight (@ gms) Panel Cutout (mm)
MPITP MPI 19332 3Ph-2EL-3W 0.5 96 x 96 x 140 800 92 x 92 +0.8
MPI 19342 3Ph-2EL-3W 1.0
MPI 20332 3Ph-3EL-4W 0.5
MPI 20342 3Ph-3EL-4W 1.0


TERMINAL CONNECTIONS
TYPE VOLTAGE CURRENT Aux. Supply
Three Phase, Two Element, Three Wire L1, L2, L3 1S, 1L
3S, 3L
~,~
Three Phase, Two Element, Four Wire L1, L2, L3 N 1S, 1L
2S, 2L
3S, 3L
~,~

TYPICAL WIRING DIAGRAM

Ordering information
1) Model 2) Input Voltage 3) Input Current 4) Auxiliary Supply
5) PTR (if any) 6) CTR (if any)  
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