Inductance box R5000 (R 5000, R-5000, p5000, p 5000, p-5000)
Inductance box R5000 are designed for use as a measure of the mutual inductance in DC and AC frequency up to 10 kHz.
Inductance box R5000 is designed for use in enclosed dry heated area in a temperate climate at an ambient temperature of 10 to 35 ° C and a relative humidity of 80% (at 25 ° C).
Accuracy class 0.2 in accordance with GOST 20798-75. The highest value of the mutual inductance store 11,111 mH. Number decades shop R5000 - four: 0.001 - 0.011 mH; 0.01-0.1 mH, 0.1-1mGn, 1-10mGN. Each decade of the store with a step change in the mutual inductance makes it possible to include any mutual inductance of the series: (0,1,2,3,4,5,6,7,8,9,10) 10 mH n, where n-number -2 , -1, 0.
Decade store R5000 with a smooth change of mutual inductance (Vario) provides the ability to include any of a number of mutual inductance (0,1,2,3,4,5,6,7,8,9,10,11) 10 -3 mh. The upper value of the normal frequency range, extended frequency range, the values of the normal and maximum currents of the primary and secondary windings are indicated in Table 1. The maximum voltage applied to the primary winding of the store does not exceed 300 V. Maximum permissible error (δ) store R5000, expressed as a percentage of the nominal value of the mutual inductance is equal to δ = ± 0,2 (1 + 0.04 / M)
where M - the numeric value of the mutual inductance included in the CTG, subject to the following standard conditions:
ambient temperature of 20 ± 5 ° C;
relative humidity of 65 ± 15% of the atmospheric pressure 100000 ± 4000Pa (750 ± 30 mm Hg);
any frequency within the normal region, the current value is not more than normal;
initial mutual inductance should be excluded from the measurement results;
should only be enabled under verification decade, the absence of external magnetic fields, other than the Earth's field.
The phase error does not exceed R5000 shop 3.10 -3 rad. The initial mutual inductance shop does not exceed 0.5 uH. Changing the mutual inductance store R5000 caused by frequency deviation from the upper value of the normal range of frequencies up to any value of the extended area does not exceed the maximum permissible basic error.
Changing the mutual inductance store R5000 caused a deviation from the ambient air temperature within the normal operating temperature range does not exceed for each 10 ° C change in temperature than half of the maximum permissible basic error.
Additional error due to interference between adjacent included decades of not more than 0.33 of the maximum permissible basic error. Changing the initial mutual inductance does not exceed ± 0,035 uH changing: ambient temperature from 20 to 10 or 35 ° C, the frequency of the upper value of the normal range of frequencies up to anyone in the extended area.
Changing the mutual inductance store R5000 caused by the influence of an external magnetic field frequency f Hz, equal to any in the operating range of frequencies and intensity H = 4000 / f / m, but not more than 8 A / m, not more than twice the maximum permissible basic error.
The steady-state temperature rise of windings overheating store R5000 passing the maximum current does not exceed 25 ° C. The maximum value of the DC resistance of primary and secondary windings 40 and less than 10 ohms, respectively. The capacitance between the bridged insulated electrical circuits store and screen more than 200 pF.
The insulation resistance between isolated circuits bridged store R5000 and screen, as well as between primary and secondary windings of decades of not less than 100 MW.
The insulation between primary and secondary windings of decades, and bridged between isolated circuits store and R5000-screen stand for 1 minute test voltage of 2 kV practically sinusoidal alternating current frequency of 50 Hz. Overall dimensions do not exceed 405x315x240 mm. Weight less than 11 kg.