GE B90 Instruction Manual page 293
Ur series
low impedance bus
differential system
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Also See for B90:
- Instruction manual (510 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (442 pages)
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9 THEORY OF OPERATION
9.4 DIRECTIONAL PRINCIPLE
The B90 implementation calculates the maximum angle for the considered currents and compares it against a fixed thresh-
old of 90°. The flag indicating whether the directional protection principle is satisfied is available as the FlexLogic™ oper-
and
.
BUS 1(4) DIR
9
GE Multilin
B90 Low Impedance Bus Differential System
9-7
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