Basler BE1-50/51B-105 - SECTION 1 GENERAL INFORMATION; SPECIFICATIONS

9252000991 Rev N BE1-50/51B General Information i
SECTION 1 • GENERAL INFORMATION
TABLE OF CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
INTRODUCTION.................................................................................................................................... 1-1
FEATURES............................................................................................................................................ 1-1
Advantages......................................................................................................................................... 1-1
MODEL NUMBERS ............................................................................................................................... 1-2
SPECIFICATIONS................................................................................................................................. 1-4
Current Sensing Input ........................................................................................................................ 1-4
Time Overcurrent (51) Element.......................................................................................................... 1-4
Instantaneous Overcurrent (50) Element........................................................................................... 1-6
Burden................................................................................................................................................ 1-8
Frequency Response ......................................................................................................................... 1-8
Transient Response ........................................................................................................................... 1-8
Harmonic Response........................................................................................................................... 1-8
Target Indicators ................................................................................................................................ 1-9
Output Contacts ................................................................................................................................. 1-9
AUX Output Contact........................................................................................................................... 1-9
Type Tests.......................................................................................................................................... 1-9
Environment ..................................................................................................................................... 1-10
Agency Recognition ......................................................................................................................... 1-10
Patent ............................................................................................................................................... 1-10
Physical ............................................................................................................................................ 1-10
Figures
Figure 1-1. BE1-50/51B, S1 Cas
e............................................................................................................. 1-2
Figure 1-2. Integrating Reset Characteristic Curve................................................................................... 1-6
Figure 1-3. Instantaneous Characteristic Curves...................................................................................... 1-7
Figure 1-4. Burden Characteristics............................................................................................................ 1-8
Figure 1-5. Harmonic Rejection................................................................................................................. 1-9
Tables
Table 1-1. BE1-50/51B Overcurrent Relays, One Am
pere CT Secondary, 50/60 Hz............................... 1-3
Table 1-2. BE1-50/51B Overcurrent Relays, Five Ampere CT Secondary, 50/60 Hz............................... 1-3
Table 1-3. Time Characteristic Curve Constants with SW3-3 Open (Off) (Series 100 Relays or Series 200
Relays)....................................................................................................................................................... 1-5
Table 1-4. Time Characteristic Curve Constants with SW3-3 Closed (On) (Series 200 Relays) ............. 1-5
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