Basler Electric BE1-50/51B - Manual (Page 11)

9252000991 Rev R 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 ....................................................................................................................................... 1-9
Agency Recognition ......................................................................................................................... 1-10
Patent ............................................................................................................................................... 1-10
Physical ............................................................................................................................................ 1-10
Figures
Figure 1-1. BE1-50/51B, S1 Case ............................................................................................................. 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 Ampere 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