HiTeC & Yokogawa - emitec-industrial.ch
HiTeC & Yokogawa - emitec-industrial.ch
HiTeC & Yokogawa - emitec-industrial.ch
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curacc/stacc <strong>ch</strong>aracteristic specification<br />
general<br />
SPeCifiCaTionS<br />
current output type (curacc)<br />
Input range DC, up to ±2000A model B, ±6000A model E<br />
Input range AC, up to ±2000Apk (1400Arms), ±6000Apk (4200Arms)<br />
Transfer ratio user defined 1Apk at requested primary peak current<br />
External burden 0…1Ω (at 1Apk)<br />
Accuracy DC 0.002% of reading + 0.001% of range<br />
Accuracy AC<br />
voltage output type (stacc)<br />
0.010% of reading + 0.002% of range<br />
Input range DC, up to ±2000A model B, ±6000A model E<br />
Input range AC, up to ±2000Apk (1400Arms), ±6000Apk (4200Arms)<br />
Transfer ratio 10Vpk at requested primary peak current 2000:1 or 6000:1<br />
Output voltage 12Vmax with ≥2kΩ load<br />
Accuracy DC 0.010% of reading + 0.005% of range<br />
Accuracy AC<br />
General<br />
0.015% of reading + 0.005% of range<br />
Bandwidth DC … 100kHz (-3dB)<br />
Overload 110% (DC / AC)<br />
Supply voltage ±24, ±32 or ±40Vdc (max. 1Apk)<br />
Dimensions head B: 170x130x70mm, E: 225x225x180mm<br />
Hole diameter B: 45mm, E: 56mm<br />
Notes:<br />
Specification for ambient 25±10°C, humidity ≤90% (non condensing) and sinusoidal AC-currents. Junction unit system SUM3 resp. SUM4<br />
available for supplying three resp. four CURACCs “current-in/current-out” or STACCs “current-in/voltage-out”.<br />
Input currents with f > 1kHz must be de-rated according to the graph below.<br />
Amplitude of continuous current<br />
De-rating curve for input signals with f > 1 kHz<br />
inPut current anD crest factor<br />
The Zero-flux TM CT specifies the maximum waveform peak current, rather than the maximum rms-current, as done for the<br />
direct current input of the <strong>Yokogawa</strong> power meters. For example to measure 1000Arms with a Zero-flux TM CT you need a<br />
type suitable for 1400Apk, whi<strong>ch</strong> is the peak value of the sinusoidal current.<br />
Currents having high crest factors also can be measured properly, as long as the waveform “fits” within the peak current<br />
capabilities of the Zero-flux TM CT.<br />
This means you can measure currents up to 280Arms having a crest factor of 5.<br />
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