Basler BE1-50/51M-100 Series User Manual

BE1-50/51M General Information 1-11
()
T Time To Reset
RD
M1
R
2
=
-
Table 1-4. Time Characteristic Curve Constants ( 200 Series Relays With SW3-3 Closed (ON)
Curve Type Figure
Constants
BE1 Similar To Number A B C N K R
S GE IAC 55 1-16 0.0286 0.0208 1.000 0.9844 0.028 0.0940
L GE IAC 66 1-17 2.3955 0.00000 1.000 0.3125 0.028 7.8001
D ABB CO-6 1-9 0.4797 0.21359 1.000 1.5625 0.028 0.8750
M ABB CO-7 1-10 0.3022 0.12840 1.000 0.5000 0.028 1.7500
I GE IAC 51 1-18 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 1-19 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 1-20 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B* 1-14 1.4636 0.00000 1.000 1.0469 0.028 3.2500
C BS142-C* 1-15 8.2506 0.00000 1.000 2.0469 0.028 8.0000
F None** None 0.0000 1.00000 0.000 0.0000 0.000 1.0000
* Curves B and C are defined in British Standard BS142 and IEC 255-4 (International
Electrotechnical Commission)
** Fixed time from 0.1 to 9.9 seconds.
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
Time Reset
Reset occurs when the current drops below pickup and the relay has not
timed out. Switch SW3-4 provides selection of either an instantaneous or
integrating reset characteristic. Opening SW3-4 forces the instantaneous
reset timer to zero when timed dropout occurs. This fast reset
characteristic prevents the ratcheting effect that may occur with repeating
system faults. Closing SW3-4 selects the integrating reset characteristic.
The integrating reset characteristic simulates the disk reset of
electromechanical relays. When the integrating reset characteristic is
selected on 100 series relays, insure that sufficient input power is available
to power-up the relay. This is not required on Series 200 relays. Series
200 relays provide the integrating reset function even when input current
falls to zero.
Integrating reset characteristics are defined by the following equation and
shown in Figure 1-6. Equation constants are provided in Tables 1-3 and
1-4.
Where:
R
= Constant for the particular curve
D
= TIME DIAL setting
M
= Multiple of PICKUP
Courtesy of NationalSwitchgear.com

Basler BE1-50/51M-100 Series Specifications

General

Brand	Basler
Model	BE1-50/51M-100 Series
Category	Relays
Language	English