Beckhoff SCT Series, Документация

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Technical data
SCT5xxx 23 Version: 1.0
3 Technical data
3.1 SCT5xxx | Ring-type current transformer for
differential current, size 5
3.1.1 SCT5564
Primary side SCT5564
Rated primary current I
n
100 A (I
Δn
= 30 mA)
300 A (I
Δn
= 100-1000 mA)
Rated continuous thermal current I
Δcth
100 A
Rated short-time thermal current I
Δth
200 A (max. 10 ms)
Rated peak current I
Δdyn
10 kA
Rated frequency f
n
50 / 60 Hz
Permissible primary current frequency range 0…400 Hz
Rated voltage U
n
690 V (RMS)
Pulse dielectric strength U
imp
8 kV
Current output SCT5564
Output current 4…20 mA
Measuring ranges 0.4 A (RMS) for (I
Δn
= 30-300 mA)
2 A (RMS) for (I
Δn
= 0.5-1 A)
Resolution 0.01 mA
Update interval 1 ms (1 kHz)
Measurement uncertainty < ± 2 % typ. (< ± 5 % max.) for 10-400 Hz
< ± 3 % typ. (< ± 7 % max.) for DC-10 kHz
(relative to full scale value)
*)
Differential current frequency range - adjustable DC-100 Hz**)
DC-2 kHz
DC-20 kHz
DC-100 kHz
Integration time - adjustable Short (100 ms)
Medium (400 ms)
Long (1000 ms)
*) Please pay attention to cable routing (see mounting instructions [
}
27] )!
**) The frequency range of 100 Hz makes the SCT5xxx less sensitive to higher frequencies and does not
correspond to type B according to IEC62020-1
Relay output SCT5564
Relay output NO+NC
Relay switched on 100 % I
Δn
+0 % - 20 % at 50 / 60 Hz
Relay switched off 50 % I
Δn
+20 % - 0 % at 50 / 60 Hz
Relay voltage / current max. 30 V and 1 A AC/DC
Switching cycles > 20,000