The DPATT-3B instrument is indigenously designed and developed by UMA Electronics, to make the testing of Stabilisers,  Transformers ,Motors and other Electrical Machines  Simpler , Faster,  Accurate and  Reliable with its high  performing DSP based circuitry  and user friendly operational features.

    The high speed simultaneous sampling of all the channels using 24-bit ADC ensures True RMS measurement of the wide range of input voltage and input current. This instrument displays Voltage, Current, Frequency, Active Power and Power Factor, both phase wise and Total/Average. The measurement is valid at all power factors  and gives accurate results even in the presence of harmonics in the system.

    It has two displays, one is Blue moon display for simultaneous display of the related parameters and another is seven segment  display for long distance view.

    The keys on the front panel provide navigation of different parameters as well as range selection and Hold facility.

    The functionality of the meter is further enhanced with PC interfacing facility through USB Port. The accompanying software is capable of Data Logging, Set Point Alarm, and viewing the Meter Variables in real time on computer using the GUI provided. The data can be saved in SD memory card which can have 10,000 test results.  
    Model: DPATT-3B
    Parameters : Voltage ( V) – V1,V2,V3 & Avg. Voltage
    Current (A) : I1 , I2 , I3 & Avg. Current
    System Frequency : (Hz)
    Active Power(W) : W1,W2,W3 & Total Wattage
    Power Factor ( CosA¸): PF1, PF2, PF3 & System
    Apparent Power ( VA): Total
    Measurement : True RMS
    Phase Voltage : 3 – 600 V / 10 – 1200V AC
    Phase Current : 50mA – 80A AC
    System Frequency : 40 to 70 Hz
    For Power Factor : 0.05 Lead to unity to 0.05 Lag

Model: DPATT-3B

Ideal for transformer testing, motor testing, analysing energy consumption of buildings. Current range: 100mA to 80 A with selector switch


Input Voltage: 30-600V

Available in current ranges 5 A ,10 A,20A,80A and 200A with inbuilt CT. Accurate over 0.1% to 100% of full-scale current. Power Factor: Works in wide range of power factor, from 0.05 lag to 0.05 lead Accuracy Class 0.20 accuracy Display: 20 X 4 bright blue moon display

(Updated : January 24, 2018)