Electrical measuring instruments >> analog panel meters >> ammeters and voltmeters >> DC >> size 120х120mm


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    M381 ammeter, voltmeter M381 (M 381, M-381; m381; m 381; m-381)
    M381 ammeter, voltmeter M381 - panel meter-coil system for measuring current and voltage in the DC link.
    Accuracy class - 1.5.
    Overall dimensions - 120×120× 60mm.

    Vibration, impact resistant, splash-proof.
    Ammeters M381 and voltmeters M381 have a measuring system with a magneto system vnutriramochnym magnet and moving part in the drill cores.
    Specifications M381

    The values ​​ranges M381 devices with the zero mark, and how their inclusion are shown in Table 1.

Table 1.
Name and type of instrument
The values ​​of the measuring range of devices with the zero mark
A way to incorporate
at the beginning of the scale
mid span
Ammeter M381
0.5 mA, 0.75 mA, 1mA, 3mA, 5mA, 10mA, 15mA, 30mA, 50mA, 75mA, 100mA, 150mA, 300mA, 500mA;
10mA/100mA; 10mA/200mA; 10mA/500mA; 50mA/250mA;
1A, 2A, 3A, 5A, 10A, 20A, 30A
0.5 mA, 0 mA-0, 5 mA, 0 mA to 150 mA, 150 mA, 300 mA, 0 mA, 300 mA, 500 mA, 0 mA, 500 mA,
from 1A-0A-1A-0A to 30A-30A
30A, 50A, 75A, 100A, 150A, 200A, 300A, 500A; 750A;
1kA, 1.5 kA 2ka; 3kA; 4ka; 5kA, 6 kA, 7.5 kA
from 0A-30A-30A to 750A-0A-750A,
1kA from-0-1 to 7.5 kA-0kA-7 5kA
With external shunt 75mV and calibrated wires resistance 0.035 Ohm
200A, 400A; 600A, 1kA; 2ka; 3kA; 4ka, 6 kA, 8kA, 10kA, 15kA, 20kA, 30kA
0A to 200A-200A-600A-600A-0s,
from 1kA-0kA-1kA to 30 kA, 30 kA-0kA
With external shunt 150mV and calibrated wires resistance 0.035 ohm calibrated wires resistance 0.035 Ohm
Voltmeter M381
75mV, 150mV
-75mV 0mV-75mV, 150mV, 150mV 0mV-
3V, 7.5V, 15V, 30V, 50V, 75V, 150V, 250V, 300V, 400V, 500V, 600V, 750V
from 3V-0V-3V to 0V-750V-750V
1 kV, 1.5 kV, 3 kV, 10kV, 15kV
from 1kV-0kV-1 kV to 3 kV-0kV-3kV
With the external series resistor

     Ammeters M381 and voltmeters M381 admit the error of measurement equal to ± 1,5% of the final value of the measuring range - for units with the zero mark on the left and the amount of the final value of the measuring range - for units with a zero mark in the middle of the scale.

    Operating conditions M381

    Ammeter M381 and voltmeter M381 designed for use at temperatures from -40 º C to +60 º C. Relative humidity should be no more than 95% (at +35 º C).
    Devices M381 made ​​in the body splash proof.

    Positioning and mounting M381

    Ammeters M381  and voltmeters M381 designed for flush mounting on vertical or horizontal panels (panels) made ​​as of the magnetic and non-magnetic materials.

    When mounting the M381 must adhere to the following rules:
    - Installation of equipment should be made ​​carefully, without distortions;
    - Fastening ammeters M381 and voltmeters M381 panel must be rigid and not create additional stress;
    - Ammeter M381 and voltmeter M381 mounting should be located away from sources of strong magnetic fields with a strength greater than 0.4 kA / m;
    - Appliances intended for inclusion in the network with a voltage of more than 650V, mounted on insulators of reach to touch.
    The manufacturer guarantees that the device specification requirements under normal use, storage, transportation and installation. Guaranteed shelf life ammeter and voltmeter M381 M381 - 6 months from date of manufacture. Guarantee period - 4 years from the date of commissioning the device.
    Ammeter M381 and voltmeter M381  compliant, ensuring the safety of life, health, consumer and environmental protection.

Photos M381

M381 front view (scale).
M381 front view (scale).
M381 side view (casing depth).
M381 side view (casing depth).
M381 rear view (connection).
M381 rear view (connection).

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