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AC24 / R ALTERNATIVE CURRENT OR VOLTAGE CONVERTER FOR RAILWAY APPLICATIONS

Reference GAC24/RR

Product type AC24 / R

Operating temperature range -25 ° C to 70 ° C

Storage temperature range -40 ° C to 80 ° C

Supply voltage 12 to 30 VDC

Rated input signal class S1 čl.: 5.1.1.2

Nominal input signal 1A, 2,5A, 5A AC

57,7V, 100V, 110V, 230V, 380V, 400V, 500V AC

65V, 115V, 127V, 265V, 440V, 460V, 600V AC, jiný na objednávku

Output signal 4 to 20 mA pasivní

Max voltage input consumption 0,5 mA

Current input consumption <0,015 VA

Input overload capacitance voltage: 2 Ujm - 1s

current: 2 Ijm - 1min, 20 Ijm - 1s

Standard measuring range 0 to 1 Ijm (Ujm), others on request

Maximum measuring range 0 to 1,2 Ijm (Ujm)

Input current limit typ. 28mA (electronic fuse)

Linear transfer

Max. transfer error <0,5% at crest factor <10

Temperature error <0,02% / ° C

Air distance and surface

inlet / outlet min. 8 mm

Rated impulse voltage Uni 8kV

Test voltage Ua input / output 4kVef

Signal stabilization time 300ms

Protection box / terminal block IP 40 / IP 20

Weight 120 g

Environment stupeň znečistění PD1, PD2

Max operating voltage By insulation

wiring overvoltage category

OVI

OVI

Insulation level OVIII:

the base

at 1000V RMS

at 1000V RMS

at 1000V RMS improved

at 1000V RMS

at 600V RMS

at 300V RMS

Tests

Shock and vibration tests according to EN 61373

Electromagnetic compatibility according to EN 50121-3-2

Insulation test according to EN 50155

Fire resistance

according to EN 45545

Product features AC24 / R ALTERNATIVE CURRENT OR VOLTAGE CONVERTER FOR RAILWAY APPLICATIONS

The AC24 / R converter converts the actual RMS value of a measured AC signal into a unified DC signal. There is a measuring transformer at the input of the current converter. It isolates the measured input circuit and converts the input signal into a suitable voltage for further processing. After bidirectional rectification, calculating the RMS value and filtering the signal, an output DC signal is created on the output of the converter. The voltage output is isolated using an optocoupler. RMS value calculation is performed in an Analog Devices monolithic converter. The input and output circuits are protected against overload.

The AC24 / R converter is also suitable for processing heavily distorted waveforms of the input signal. It can be used even if there are frequency converters or other non-linear control elements in the system. When measuring signal waveforms distorted by mean value converters, errors can reach tens of percent. The following table shows the difference between the measurement of the mean signal value and the RMS value for various distorted waveforms.

TESTS, DECLARATIONS, CALIBRATIONS

Electronic equipment used on rolling stock according to standard EN 50155, as amended

Electromagnetic compatibility according to standard EN 50121-3-2, as amended

Insulation coordination according to standard EN 50124-1, as amended

Shock and vibration tests according to standard EN 61373, as amended

Fire protection according to standard EN 45545-2 + A1, as amended, meets all the requirements for monitored products according to table 2 - the printed circuit meets all of the R24 requirements - the housing meets all R26 requirements

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