USER`S GUIDE High Speed DC Circuit Breaker TYPE ... - Biziz
USER`S GUIDE High Speed DC Circuit Breaker TYPE ... - Biziz
USER`S GUIDE High Speed DC Circuit Breaker TYPE ... - Biziz
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7. Gerapid 2607/4207 - Current measurement system type SEL<br />
SEL–TheintegratedSolution<br />
Themainpurposeofthehighspeed<strong>DC</strong>circuitbreaker<br />
typeGerapidistheinterruptionofservicecurrentsand<br />
protection of mains against short circuit.. Current<br />
measuringrequirestheinstallationofexternaldevices<br />
e.g. shunt –buffer amplifier which needs mounting<br />
timeaswellasadditionalspace.<br />
Now the Gerapid offers the new feature – current<br />
measuring with the sophisticated current<br />
measurementsystem TypeSEL06-1....12-4<br />
Theadvantagescomparedwith theconventional<br />
systemsare<br />
thetransducerisintegratedin theGerapid<br />
noadditionalassemblywork<br />
noadditionalmountingspace<br />
low noisemeasur ing without anyfiltering<br />
ranges 6kAand 12kA<br />
3differentinterfaces<br />
applicableupto4000V<strong>DC</strong><br />
!<br />
!<br />
!<br />
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!<br />
Theoscillogramsbelowshowthehighaccuracyofthe<br />
current measurement system type SEL in comparison<br />
with the conventional method using ashunt -buffer<br />
amplifier.<br />
MeasurementwithShunt-BufferAmplifier<br />
1200<br />
1000<br />
800<br />
600<br />
400<br />
200<br />
0<br />
-200<br />
0 100 200 300 400 500 600<br />
Time t [ms]<br />
Measurementwith CurrentMeasurement<br />
SystemType SEL<br />
1200<br />
1000<br />
800<br />
600<br />
400<br />
200<br />
0<br />
-200<br />
0 100 200 300 400 500 600<br />
Time t [ms]<br />
Structure<br />
ThecurrentmeasurementsystemTypeSEL06-1...12-4<br />
consists of the components sensor and signal<br />
processingunit.<br />
Hall probes record the the magnetic field surrounding<br />
the current. The special design and the high<br />
performance shielding minimise the influence of<br />
interference.<strong>High</strong>build-upofcurrentisrecordedinreal<br />
time.<br />
Thesensorisintegratedintoaspeciallydesignedupper<br />
terminal of the Gerapid and connected by ascreened<br />
cablewiththesignalprocessingunit.<br />
This signal processing unit transfers the input signal<br />
whichisproportionaltothecurrentsignalintodifferent<br />
outputsignals.<br />
Theusercanselectbetweentheinterfaces<br />
!<br />
!<br />
!<br />
Technical Data<br />
Type SEL 06-1 06-2 06-4 12-1 12-2 12-4<br />
Input -6 to 6 kA -12 to 12kA<br />
U Ne[V] 1000 2000 4000 1000 2000 4000<br />
Relating to rated current<br />
I Ne<br />
4...20mA,<br />
+/-20mA,<br />
+/-10V<br />
All interfaces are potential free. Phase failures are<br />
automaticallydetectedundindicatedbyazero-signal<br />
onthe4...20mAoutput.<br />
Output<br />
4...20mA<br />
-20...20mA<br />
-10...10V<br />
U Ni[kV] 12 18 40 12 18 40<br />
Design and specifications aresubject tochangewithoutnotice<br />
40
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