Basler-electric BE1-50/51B-240 User Manual

INSTRUCTION MANUAL FOR BE1-50/51B-240 Overcurrent Relay Publication: 9252000790 Revision: B 08/14

2 9252000790 Rev B • Built-in accuracy eliminates internal adjustments • Minimum transient overreach • Field selectable characteristic curve sel

9252000790 Rev B 3 Reset Integrating: Simulates the disk reset of electromechanical relays and begins when the current decreases below 95% of pickup

4 9252000790 Rev B Figure 2. Current Sensing Input Burden Frequency Response A change of ±5 Hz from the nominal 50/60 Hz current causes <0.5% c

9252000790 Rev B 5 Target Indicators A gravity-latched, manually-reset, current-operated target indicator is provided for the time-overcurrent (51) t

6 9252000790 Rev B General Information BE1-50/51B-240

9252000790 Rev B 7 Controls and Indicators Introduction BE1-50/51B-240 relay controls and indicators are located on the front panel and circuit board

8 9252000790 Rev B Table 2. Front Panel Controls and Indicators Locator Description A Time Overcurrent Time Dial Selector Switches. These two rotar

9252000790 Rev B 9 Figure 5. Circuit Board Controls Table 3. Circuit Board Controls Locator Description A Target Operating Current Jumpers. Two use

10 9252000790 Rev B Locator Description C SW9 and SW10. These switches and associated instantaneous overcurrent (50-B) element are NOT used on the

9252000790 Rev B 11 Functional Description Introduction This chapter illustrates and describes the functional capabilities of the BE1-50/51B-240 rela

12 9252000790 Rev B When sufficient current is sensed by the relay, the microprocessor is active and executing code, and the Active/Pickup LED is g

9252000790 Rev B 13 Installation General When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to preve

14 9252000790 Rev B Connections Typical ac connections are shown in Figure 7 and typical dc connections are shown in Figure 8. Figure 7. Typical

9252000790 Rev B 15 Figure 8. Typical DC Connections Application Coordination In a typical application coordination scheme, a BE1-50/51B-240 is used

16 9252000790 Rev B From the reset characteristic curve equation: 12−=MRDTR M equals 0 if current goes to zero. A negative result indicates reset t

9252000790 Rev B 17 Testing Introduction Proper relay operation may be confirmed by performing the test procedures in this chapter. Dielectric Test I

18 9252000790 Rev B Figure 10. 51 Pickup, Time Dial, Integrating Reset, 50 Pickup, and Manual Trip Test Setup Time Dial 1. Connect and configure

9252000790 Rev B 19 c. Set TIME DIAL to 9.9 d. Set CURVE to V. e. Set TIME PICKUP to 1.0. f. Set INST PICKUP to 90. 2. Apply 4.0 Aac to terminal

20 9252000790 Rev B 4. Remove the jumper and the current applied at relay terminals 8 and 9. 5. Apply 0.9 Aac to terminals 8 and 9. 6. Connect a

9252000790 Rev B 21 Figure 11. Target Indicators Test Setup BE1-50/51B-240 Testing

9252000790 Rev B i Preface This instruction manual provides information about the installation and operation of the BE1-50/51B-240 Overcurrent Relay.

22 9252000790 Rev B Testing BE1-50/51B-240

9252000790 Rev B 23 Characteristic Curves Introduction This chapter describes and defines the instantaneous overcurrent, time overcurrent, and integr

24 9252000790 Rev B Time Overcurrent Characteristics Nine inverse time functions and one fixed (definite) time function can be selected at the fron

9252000790 Rev B 25 Table 5. Time Characteristic Curve Constants with Switch SW3-3 Closed (On) Curve Type Similar To Figure Number Constants BE A B C

26 9252000790 Rev B Figure 13. Short Inverse (S) Time Characteristic Curve (SW3-3 Off, Similar to CO-2) Characteristic Curves BE1-50/51B-240

9252000790 Rev B 27 Figure 14. Long Inverse (L) Time Characteristic Curve (SW3-3 Off, Similar to CO-5) BE1-50/51B-240 Characteristic Curves

28 9252000790 Rev B Figure 15. Definite Time (D) Time Characteristic Curve (Similar to CO-6) Characteristic Curves BE1-50/51B-240

9252000790 Rev B 29 Figure 16. Moderately Inverse (M) Time Characteristic Curve (Similar to CO-7) BE1-50/51B-240 Characteristic Curves

30 9252000790 Rev B Figure 17. Inverse (I) Time Characteristic Curve (SW3-3 Off, Similar to CO-8) Characteristic Curves BE1-50/51B-240

9252000790 Rev B 31 Figure 18. Very Inverse (V) Time Characteristic Curve (SW3-3 Off, Similar to CO-9) BE1-50/51B-240 Characteristic Curves

ii 9252000790 Rev B 12570 State Route 143 Highland IL 62249-1074 USA www.basler.com [email protected] Tel: +1 618.654.2341 Fax: +1 618.654.2351

32 9252000790 Rev B Figure 19. Extremely Inverse (E) Time Characteristic Curve (SW3-3 Off, Similar to CO-11) Characteristic Curves BE1-50/51B-2

9252000790 Rev B 33 Figure 20. BS142 Very Inverse (BS142-B) Time Characteristic Curve BE1-50/51B-240 Characteristic Curves

34 9252000790 Rev B Figure 21. BS142 Extremely Inverse (BS142-C) Time Characteristic Curve Characteristic Curves BE1-50/51B-240

9252000790 Rev B 35 Figure 22. Short Inverse (S2) Time Characteristic Curve (SW3-3 On, Similar to IAC 55) BE1-50/51B-240 Characteristic Curves

36 9252000790 Rev B Figure 23. Long Inverse (L2) Time Characteristic Curve (SW3-3 On, Similar to IAC 66) Characteristic Curves BE1-50/51B-240

9252000790 Rev B 37 Figure 24. Inverse (I2) Time Characteristic Curve (SW3-3 On, Similar to IAC 51) BE1-50/51B-240 Characteristic Curves

38 9252000790 Rev B Figure 25. Very Inverse (V2) Time Characteristic Curve (SW3-3 On, Similar to IAC 53) Characteristic Curves BE1-50/51B-240

9252000790 Rev B 39 Figure 26. Extremely Inverse (E2) Time Characteristic Curve (SW3-3 On, Similar to IAC 77) BE1-50/51B-240 Characteristic Curves

40 9252000790 Rev B Timing Accuracy Timing accuracy is the sum of ±1 cycle, ±2%. This accuracy applies to the range of 1.3 to 40 times tap and is f

9252000790 Rev B 41 Reset characteristic curve equation: Reset to TimeMRDTR=−=12 Instantaneous Reset Reset occurs within 16 milliseconds of when the

9252000790 Rev B iii Revision History The following information provides a historical summary of the changes made to this instruction manual (9252000

42 9252000790 Rev B Characteristic Curves BE1-50/51B-240

12570 State Route 143 Highland IL 62249-1074 USA Tel: +1 618.654.2341 Fax: +1 618.654.2351 email: [email protected] P.A.E. Les Pins 67319 Wasselonne

iv 9252000790 Rev B Revision History Overcurrent Relay

9252000790 Rev B v Contents General Information ...

vi 9252000790 Rev B Contents Overcurrent Relay

9252000790 Rev B 1 General Information Introduction The BE1-50/51B-240 protective relay is a direct replacement for ABB/Westinghouse type CO relays h