Basler BE1-50/51B-229, Instruction Manual

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9252000892 Rev A BE1-50/51B-229 General Information 1-3
Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off)
Curve Type
∗
Constants
BE1 Similar To
Figure
Number †
A B C N K R
S ABB CO-2 A-1 0.2663 0.03393 1.000 1.2969 0.028 0.500
L ABB CO-5 A-2 5.6143 2.18592 1.000 1.000 0.028 15.750
D ABB CO-6 A-3 0.4797 0.21359 1.000 1.5625 0.028 0.875
M ABB CO-7 A-4 0.3022 0.12840 1.000 0.5000 0.028 1.750
I ABB CO-8 A-5 8.9341 0.17966 1.000 2.0938 0.028 9.000
V ABB CO-9 A-6 5.4678 0.10814 1.000 2.0469 0.028 5.500
E ABB CO-11 A-7 7.7624 0.02758 1.000 2.0938 0.028 7.750
B BS142-B ‡ A-8 1.4638 0.00000 1.000 1.0469 0.028 3.250
C BS142-C ‡ A-9 8.2506 0.00000 1.000 2.0469 0.028 8.000
F None § N/A 0.0000 1.00000 0.000 0.0000 0.000 1.000
Table 1-3. Time Characteristic Curve Constants with SW3-3 Closed (On)
Curve Type
∗
Constants
BE1 Similar To
Figure
Number †
A B C N K R
S GE IAC 55 A-10 0.0286 0.0208 1.000 0.9844 0.028 0.0940
L GE IAC 66 A-11 2.3955 0.00002 1.000 0.3125 0.028 7.8001
D ABB CO-6 A-3 0.4797 0.21359 1.000 1.5625 0.028 0.8750
M ABB CO-7 A-4 0.3022 0.12840 1.000 0.5000 0.028 1.7500
I GE IAC 51 A-12 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 A-13 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 A-14 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B ‡ A-8 1.4636 0.00000 1.000 1.0469 0.028 3.2500
C BS142-C ‡ A-9 8.2506 0.00000 1.000 2.0469 0.028 8.0000
F None § N/A 0.0000 1.00000 0.000 0.0000 0.000 1.0000
Notes for Tables 1-2 and 1-3
∗
BE1 Curve Types: S: Short Inverse V: Very Inverse
L: Long Inverse E: Extremely Inverse
D: Definite Time B: BS142 Very Inverse
M: Moderately Inverse C: BS142 Extremely Inverse
I: Inverse F: Fixed Time Delay
† Figure numbers refer to the characteristic curves located in Appendix A, Time Characteristic Curves.
‡ Curves B and C are defined in British Standard BS142 and IEC Standard IEC 255-4.
§ Fixed time delay, adjustable from 0.1 to 9.9 seconds.
Integrating Reset
Reset begins when the current decreases below 95 percent of pickup. Integrating reset simulates the disk
reset of electromechanical relays. BE1-50/51B-229 relays provide the integrating reset function even
when input current decreases to zero.
Integrating reset characteristics are defined by the following equation and shown in Figure 1-1. Equation
constants are listed in Tables 1-2 and 1-3.