Basler Electric BE1-51 - Manual (Page 5)

9137200997 Rev G iii
Contents
Introduction ................................................................................................................................................. 1
Standard Features ..................................................................................................................................... 1
Time Overcurrent Functions .................................................................................................................. 1
Non-Integrating Timing .......................................................................................................................... 2
Integrating Timing .................................................................................................................................. 2
Built-In Test ............................................................................................................................................ 2
Options ...................................................................................................................................................... 2
Timing .................................................................................................................................................... 2
Neutral Defeat ........................................................................................................................................ 2
Sensing Input Type ................................................................................................................................ 2
Sensing Input Range ............................................................................................................................. 3
Power Supply ......................................................................................................................................... 3
Targets ................................................................................................................................................... 3
Outputs .................................................................................................................................................. 3
Instantaneous Outputs ........................................................................................................................... 3
Packaging .............................................................................................................................................. 3
Model and Style Number Description ........................................................................................................ 4
Controls and Indicators .............................................................................................................................. 5
Functional Description ............................................................................................................................... 9
Block Diagram Analysis ............................................................................................................................. 9
Power Supply ....................................................................................................................................... 10
Current Sensing ................................................................................................................................... 10
Tap Select and Tap Cal ....................................................................................................................... 10
Neutral Defeat ...................................................................................................................................... 10
Multiplexor ............................................................................................................................................ 10
Analog-To-Digital Converter and Level Detector ................................................................................. 10
Time Trip Comparator and Scaler ....................................................................................................... 10
Microprocessor (Not Shown) ............................................................................................................... 10
Instantaneous Overcurrent (Options 1-1 and 1-2) ............................................................................... 11
Timed and Instantaneous Outputs....................................................................................................... 11
Auxiliary Outputs .................................................................................................................................. 11
Push-to-Energize Pushbuttons ............................................................................................................ 11
Power Supply Status Output (Option 3-6) ........................................................................................... 11
Target Indicators .................................................................................................................................. 11
Installation ................................................................................................................................................. 13
Relay Operating Guidelines and Precautions ......................................................................................... 13
Mounting .................................................................................................................................................. 13
Connections ............................................................................................................................................. 26
Maintenance ............................................................................................................................................ 33
Storage .................................................................................................................................................... 33
Tests and Adjustments ............................................................................................................................. 35
Required Test Equipment ........................................................................................................................ 35
Operational Test ...................................................................................................................................... 35
Preliminary Instructions ....................................................................................................................... 35
Time Overcurrent Pickup Test ............................................................................................................. 38
Neutral Defeat Test .............................................................................................................................. 40
Timed Output Test ............................................................................................................................... 40
Instantaneous Overcurrent Pickup Test .............................................................................................. 42
Adjustments of Controls for Relay Operation .......................................................................................... 43
TAP and TAP (NEUTRAL) Selector Setting ........................................................................................ 44
Time Overcurrent Curve Selection (Timing Type Z1, Z2, and Z3 Only) .............................................. 45
Time Delay Selection ........................................................................................................................... 45
Neutral Time Delay Selection .............................................................................................................. 46
BE1-51 Contents