M143M indicator (M-143M, M 143M, M143-M, M143 M, M-143 M, M 143-M, M-143-M, M 143 M, m-143m, m 143m, m143-m, m143 m , m-143 m, m 143-m, m-143-m, m 143 m)
M143M indicator for continuous insulation monitoring networks AC energized and equipped with an automatic stabilization of the nominal voltage.
Overall dimensions do not exceed 85 h85h120mm.
Resistant to shaking.
The indicator is set in panels of stationary and portable electrical equipment. Indicators are available in two versions - for 230V and 400V for AC, 50 Hz to 500 Hz. Device M143M used at an ambient temperature of -50 º C to +70 ° C and relative humidity of 98% (at 35 ° C). Allows operation at an ambient temperature of -10 º C to +85 ° C.
Technical characteristics of the instrument indicator M143M
The change of the indicator caused by the deviation of the ambient temperature from normal (in the range of from -50 º C to +70 ° C), does not exceed ± 2% of the length measuring range for every 10 º; under the influence of an external magnetic field of 400 A / m - does not exceed ± 2 , 5% of the length of the measuring range, if set up on a ferromagnetic shield - less than ± 1% of the length of the measuring range. The change of the indicator does not exceed ± 2% of the length of the measuring range when the symmetrical container according to 1 uF between each wire and ground measured network and unbalanced concentration insulation resistance between only one of the measured network any wires and earth.
Weight indicator M143M - 0.6 kg.
The indicator has a cylindrical body made of aluminum alloy and plastic cap; splash-proof device can be manufactured or hermetic performance, the system device - magneto.
The minimum probability of failure-free operation of the instrument indicator M143M for 500 hours Test at least 0.7 at a confidence level of 0.9.