Basler Electric BE1-51/27C - Manual (Page 5)

9137200998 Rev E iii
Contents
Introduction ................................................................................................................................................. 1
Standard Features ..................................................................................................................................... 1
Time Overcurrent Functions .................................................................................................................. 1
Non-Integrating Timing .......................................................................................................................... 2
Integrating Timing .................................................................................................................................. 3
Built-In Test ............................................................................................................................................ 3
Options ...................................................................................................................................................... 3
Timing .................................................................................................................................................... 3
Sensing Input Type ................................................................................................................................ 3
Sensing Input Range ............................................................................................................................. 3
Power Supply ......................................................................................................................................... 3
Targets ................................................................................................................................................... 4
Outputs .................................................................................................................................................. 4
Instantaneous Outputs ........................................................................................................................... 4
Packaging .............................................................................................................................................. 4
Model and Style Number Description ........................................................................................................ 4
Controls and Indicators .............................................................................................................................. 7
Functional Description ............................................................................................................................. 11
Block Diagram Analysis ........................................................................................................................... 11
Power Supply ....................................................................................................................................... 12
Current Sensing ................................................................................................................................... 12
Tap Select and Tap Cal ....................................................................................................................... 12
Voltage Sensing ................................................................................................................................... 12
Multiplexor ............................................................................................................................................ 12
Analog-To-Digital Converter and Level Detector ................................................................................. 12
Time Trip Comparator and Scaler ....................................................................................................... 12
Microprocessor (Not Shown) ............................................................................................................... 13
Voltage Inhibit ...................................................................................................................................... 13
Instantaneous Overcurrent (Options 1-1 and 1-2) ............................................................................... 13
Timed and Instantaneous Outputs....................................................................................................... 13
Auxiliary Outputs .................................................................................................................................. 13
Push-to-Energize Pushbuttons ............................................................................................................ 13
Power Supply Status Output (Option 3-6) ........................................................................................... 13
Target Indicators .................................................................................................................................. 14
Installation ................................................................................................................................................. 15
Relay Operating Guidelines and Precautions ......................................................................................... 15
Mounting .................................................................................................................................................. 15
Connections ............................................................................................................................................. 28
Maintenance ............................................................................................................................................ 39
Storage .................................................................................................................................................... 39
Tests and Adjustments ............................................................................................................................. 41
Required Test Equipment ........................................................................................................................ 41
Operational Test ...................................................................................................................................... 41
Preliminary Instructions ....................................................................................................................... 41
Time Overcurrent Pickup Test ............................................................................................................. 45
Timed Output Test ............................................................................................................................... 47
Instantaneous Overcurrent Pickup Test .............................................................................................. 49
Voltage Control Test ............................................................................................................................ 50
Adjustments of Controls for Relay Operation .......................................................................................... 51
TAP and TAP (NEUTRAL) Selector Setting ........................................................................................ 51
Time Overcurrent Curve Selection (Timing Type Z1, Z2, and Z3 Only) .............................................. 53
Time Delay Selection ........................................................................................................................... 53
Neutral Time Delay Selection .............................................................................................................. 54
BE1-51/27C Contents