Phase meter D5781 (D 5781, D-5781)
Phase meter D5781 (hereinafter - phase meter) single-phase, electrodynamic system, portable, shielded, designed to determine in single-phase AC 50Hz and 60Hz phase angle between the main harmonic components of current and voltage.
Accuracy class 0.5
Rated currents of 5A, 10A
Rated voltage 100V, 127V, 220V
Measuring range for the values of the phase angle 0-90-180-270-360 ˚; cosφ values for 1-0-1-0-1.
D5781 (hereinafter - phase meter s) single-phase, electrodynamic system, portable, shielded, designed to determine a single-phase alternating current at 50 Hz and 60 of the phase angle between the main harmonic components of current and voltage.
Phase meter D5781 is designed for use in enclosed dry heated rooms in a temperate climate at an ambient temperature of 10 to 35 ° C and a relative humidity of 80% at 30 ° C, Phase Shift D5781 - 04.1 - general climatic performance - indoors at a temperature of 1 to 45 ° C and relative humidity of 80% at 25 ° C under dry and humid tropical climates.
Accuracy class 0.5 in accordance with GOST 8039-79.
Rated currents and voltages, the normal rate shown in Table. 1.
Maximum permissible error of phase meters D5781, directly after the start and during any time of continuous operation, do not exceed ± 0,5% from 180 ° scales, graduated in the values of the phase angle, and ± 0,5% of the length of the scale, the scale for , calibrated cosφ values in this region changes in the series circuit current of 20 to 100% of nominal value.
for the values of the phase angle 0-90-180-270-360 ˚;
for the values of cosφ 1-0-1-0-1.
Own consumption of sequential circuits with rated current and normal frequency of less than 5 V · A; own consumption parallel circuit at rated voltage and normal frequency does not exceed 8 V · A. Response time phase meters D5781 does not exceed 4 c. Dimensions phase meters D5781 do not exceed 230x280x140 mm. Weight phase meters shall not exceed 6.5 kg