Current intensity indicator DMA-3 TrueRMS

Current intensity indicator DMA-3 TrueRMS


Digital. Three phases indicator.
Current intensity indicator DMA-3 is used to continuous measurement the value of the current in a circuits of three-phases.

* Measuring the effective value of current in electrical circuit.
* Measuring the circumference of the circuit is separated from the power indicator.
* Index marked TrueRMS fitted with a transducer gives the correct value of the effective value of current intensity at deformed runs.


DMA indicators are intended for current transformers with a rated secondary current of 5A. The current range for these transformers is from 25 to 1000/5 A. The primary value of the transformer's current specifies the maximum measured current and the actual current value displayed by the indicator.
The DMA-20A and DMA-3 20A are intended for direct measurements (without transformers applied) within the range of 0Ă·20 A.

Order labeling method:

INDIRECT MEASUREMENT (with transformers applied)

DMA- X  Y /5A

Three-phase: 3

Primary value of the transformer's current :
25, 30, 40, 50, 70, 75, 80, 100, 120,
125, 150, 160, 200, 250, 300, 400,
500, 600, 700, 750, 800, 900, 1000.
True RMS



*DMA-3150/5 A TrueRMS  a three-phase for 3Ă—150/5A transformers, measurement range at 3 Ă—0Ă·150 A, incl. TrueRMS.

DIRECT MEASUREMENT (without transformers)

DMA- X  20A  Z

Three-phases: 3
True RMS

  * DMA-3 20A TrueRMS - three-phase devicefor 20A, measurement range 3Ă—0Ă·20A, with TrueRMS

Typethree-phase amperemeter
Power supply voltage100Ă·265 V AC
displayfor each phase 3-digit LED (height digit 10 mm)
Display range - direct measurement version0 Ă· 20 A
Range of indications - intermediate measurement version0 Ă·primary current of the transformer
Accuracy of indications1%
Maximum instantaneous overload40 A (maximum to 1s)
Maximum current - direct measurement version20 A
Maximum current - intermediate measurement version5:00 AM
terminalscrew terminals 4,0 mm²
Tightening torque0,5 Nm
Power consumption4 W
Working temperature-20÷50°C
dimensions3 modules (52,5 mm)
Assemblyon rail 35 mm
Level of securityIP20

Current transformer implementation

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