9137200997 Rev D BE1-51 Functional Description i
SECTION 3 • FUNCTIONAL DESCRIPTION
TABLE OF CONTENTS
GENERAL.............................................................................................................................................. 3-1
BLOCK DIAGRAM ANALYSIS .............................................................................................................. 3-1
Power Supply ..................................................................................................................................... 3-2
Current Sensing ................................................................................................................................. 3-2
Tap Select and Tap Cal...................................................................................................................... 3-2
Neutral Defeat .................................................................................................................................... 3-2
Multiplexor .......................................................................................................................................... 3-2
Analog-To-Digital Converter and Level Detector ............................................................................... 3-2
Time Trip Comparator and Scaler...................................................................................................... 3-2
Microprocessor (Not Shown).............................................................................................................. 3-2
Instantaneous Overcurrent (Options 1-1 and 1-2) ............................................................................. 3-3
Timed and Instantaneous Outputs..................................................................................................... 3-3
Auxiliary Outputs ................................................................................................................................ 3-3
Push-to-Energize Pushbuttons........................................................................................................... 3-3
Power Supply Status Output (Option 3-6).......................................................................................... 3-3
Target Indicators ................................................................................................................................ 3-3
Figures
Figure 3-1. Functional Block Diagram....................................................................................................... 3-1
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
