Basler Electric BE1-50/51B-235 - Manual (Page 9)

9252000898 Rev B BE1-50/51B-235/-236 General Information i
SECTION 1 • GENERAL INFORMATION
TABLE OF CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
INTRODUCTION.................................................................................................................................... 1-1
FEATURES ............................................................................................................................................ 1-1
Advantages......................................................................................................................................... 1-2
SPECIFICATIONS ................................................................................................................................. 1-2
Time Overcurrent (51) Element .......................................................................................................... 1-2
Instantaneous Overcurrent A (50-A) Element .................................................................................... 1-3
Instantaneous Overcurrent B (50-B) Element .................................................................................... 1-3
Current Sensing Input ........................................................................................................................ 1-3
Frequency Response ......................................................................................................................... 1-5
Transient Response ........................................................................................................................... 1-5
Harmonic Rejection ............................................................................................................................ 1-6
Target Indicators ................................................................................................................................ 1-6
Output Contacts ................................................................................................................................. 1-6
Type Tests .......................................................................................................................................... 1-7
Environment ....................................................................................................................................... 1-7
Agency Recognition ........................................................................................................................... 1-7
Physical .............................................................................................................................................. 1-7
Figures
Figure 1-1. Current Sensing Input Derating Curve (BE1-50/51B-235)
...................................................... 1-4
Figure 1-2. Current Sensing Input Derating Curve (BE1-50/51B-236) ...................................................... 1-4
Figure 1-3. Current Sensing Input Burden (BE1-50/51B-235) .................................................................. 1-5
Figure 1-4. Current Sensing Input Burden (BE1-50/51B-236) .................................................................. 1-5
Figure 1-5. Harmonic Rejection ................................................................................................................. 1-6
Tables
Table 1-1. ABB Relays Suitable for Direct Replacement
.......................................................................... 1-1