Instruments RD-30, RD-31 and RD-33 (further RD-3X) are the three-phase model (standard) counters of electric power with the accuracy of measurement by 0,01% and with the accuracy of measurement - 0,04%, with the total influence of all destabilizing factors.

Before the instrument is used the analog-to-digital converter (ATsP) Of dytronic, which works together with the electronic- compensated input transformers of current and voltage and the airtight entrances for achievement of high stability and accuracy.

	RD-30	RD-31	RD-33
Typical error	+ 0,01%	+ 0,005	-
Maximum permissible error	+ 0,04%	+ 0,02%	+ 0,01%

ATsP is specially developed for the instrument of that measuring the parameters of electric power.

RD-3X makes it possible with the high accuracy to reflect the waveforms of signals. Instrument has two performances portable and with the fastening down the counter. It can be used as before the field conditions for conducting the load tests, before the composition of field stations with the controlled load, and so before the laboratory installations at the point of the check of counters.

RD-3X[obespechivaet] the measurement of the straight and return flow of energy on three phases, and so phase-by-phase stress, current, power, active, reactive and total energy before the complete range of phase shift (360°).

Instrument can test the counters of electric power with the aid of different sensors, connected directly down RD-3X, the required parameters can be easily introduced. Results automatically are processed and are derived down the display at the end of test.

It rD-3X[mozhet] to control analog signal to 2 mA for checking the counters with the analog outputs for the calibration.

Load test due to the field conditions can be carried out both with the controlled load and with the use of current tongs. In this case RD-3X reflects vector diagrams, harmonics to 50 orders (RD-31 and RD-33 to 200 orders), their phase, amplitude and THD. The high accuracy of the measurement of the parameters of the distorted waves together with the function of harmonic analysis enlarges the possibilities of instrument to the analyzer of the quality of electric power.

RD-3X[imeet] RS-232 port for the connection for the sake of the computer. The company Of radianResearch[razrabotala] several packets of software (ПО) for the adaptation of the possibilities Of rD-3X[k] to the tasks of user. It [pO]RD-Configure[pozvolyaet] to adapt the functional possibilities of instrument to the tasks of user. ON RD-Analyze, which works together with the harmonic analyzer, it makes it possible to observe the waveforms of current and voltage before the real time, reflecting harmonic order, their phase and amplitude. These data can be preserved for further study. ON It rD-Kit[soderzhit] the necessary commands and the programs, which make possible at the point of user to create its own program for the work with RD-3X.

Specification

The operating conditions Current (automatic ranking) VKh. Stress 30- 600 [v] Supply voltage by 60- 600 [v] Frequency 45 - 65 Hz Phase 0 - 360° or -180° of +180° Capacity rate -1 - +1 Temperature -20 ° +70 ° Humidity 0 - 95% Physical characteristics of the instrument Detachable on the counter or portable Weight of 7,2 kgf (12,6[kg] of [transp]) Sizes of 127 X of 444,5 X of 158,75 mm [ZHK] sensory screen with the illumination Checking and the calibration It does not require manual tuning, calibration is produced with the aid of software [Mezhkalibrovochnyy] interval of 365 days Readiness 15 flogged after the switching on Accuracy The maximum permissible error is manifested with [summarnomvliyanii] of all destabilizing factors and when [s]osφ < 0,5. Example of the selection of the instrument For example, let us select instrument RD-31-334. This will mean that the instrument is capable to measure the following values: Watt-hours (Whrs), stress (the V), current (a), Pitch- hours (VARhrs), Volt-ampere- hours (VAhrs), reactive hours (Qhrs), watts (W), pitches, total power (VA), Volt- hours (Vhrs), ampere-hours (Ahrs), volts ² - hours, amperes ² - hours, phase angle, capacity rate, frequency, the fixation of min[i] of max[znacheniy] of all enumerated values. Instrument has functions of comparator and harmonic analyzer, entrances with the range of current 200 A, and it is portable.

Menu for the selection of the model Last three numbers determine the model of counter. First number - set of the measured parameters. The second - presence of comparator, harmonic analyzer and/or analog entrance. The third - configuration of current entrance. Interpretation of the code of the model RD-3X-2xx Watt-hours (Whrs), stress (the V), current (a), Pitch- hours (VARhrs), Volt-ampere- hours (VAhrs), reactive hours (Qhrs), watts (W), pitches, total power (VA), phase angle, capacity rate, frequency. RD-3X-3xx Watt-hours (Whrs), stress (the V), current (a), Pitch- hours (VARhrs), Volt-ampere- hours (VAhrs), reactive hours (Qhrs), watts (W), pitches, total power (VA), Volt- hours (Vhrs), ampere-hours (Ahrs), [Volt]2- hours, [Amper]2- hours, phase angle, capacity rate, frequency, the fixation of min[i] of max[znacheniy] of all enumerated values. RD-3X-4xx Watt-hours (Whrs), stress (the V), current (a), Pitch- hours (VARhrs), Volt-ampere- hours (VAhrs), reactive hours (Qhrs), watts (W), pitches, total power (VA), Volt- hours (Vhrs), ampere-hours (Ahrs), volts ² - hours, amperes ² - hours, phase angle, capacity rate, frequency, the fixation of min[i] of max[znacheniy] of all enumerated values, the indication of average values. RD-3X-[kh]0x - without comparator and harmonic analyzer RD-3X-x1x- with the built-in comparator. RD-3X-x2x- with the harmonic analyzer. RD-3X-x3x- by c[komparatorom] and by harmonic analyzer RD-3X-x4x- analog entrance (for U, A, P, Q, VA) (2 mADCmax) RD-3X-x5x- comparator and the analog entrance RD-3X-x6x- analyzer is [garmonikanalogovyy] entrance. RD-3X-x7x- comparator, the analysis of harmonics the analog entrance RD-3X-xx1- 120 A entrances, fastening on the counter RD-3X-xx2- 200 A entrances, fastening on the counter RD-3X-xx3- 120 A entrances, portable RD-3X-xx4- 200 A entrances, portable

Description of the type of the standard counters Of rD3x-xxx