ERL 8700/BUS, User Manual

Page: 148 / 166

Appendix I AC Schematic Drawing
Appendix I-2 B-PRO User Manual 8700 D01908R02.12
Figure I.2: AC Schematic (bus and transformer differential)
Aux AC PTs
VA
230
VB
VC
N
231
232
233
I6
335
C
334
Rear AC Terminals of B-PRO
I6
333 B
332
I6
331 A
330
I5
329
C
328
I5
327
B
326
I5
325 A
324
I4
323 C
322
I4
321 B
320
I4
319
A
318
I3
317
C
316
I3
315 B
314
I3
313 A
312
I2
311 C
310
I2
309
B
308
I2
307
A
306
I1
305
C
304
I1
303 B
302
I1
301
A
300
Protected Bus
A B C
A
B
C
Line 1
A
B
C
Line 2
BRK 1
BRK 2
BRK 3
BRK 4
BRK 5
All CT’s to inputs 1 to 5 are connected GRD WYE.
Notes: 1.
CT’s on input #6 can be either GRD WYE or DELTA.
2.
Transformer connection can be any combination of WYE-DELTA windings.
3.
AC schematic using bus and transformer differential only
A
B
C
Line 3
A
B
C
Line 4
B A C
A B C
4.
For Input 6 (terminals 330-335), polarity might have to be physically or electrically rotated 180 degrees in settings to matc
h bus protection CT polarities.
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