Basler Electric BE1-50/51B-240 User Manual
Page 27
9252000790 Rev B
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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 terminals 8 and 9. After the unit trips, remove the applied current for 29
±0.25
seconds, then reapply the current (4.0 Aac). Note the elapsed time from the reapplication of current to
the second trip. The elapsed time should be 2.08
±0.4 seconds.
Instantaneous Overcurrent (50) Pickup
1.
Connect and configure the relay for 50 pickup testing:
a.
Connect the test setup shown in Figure 10.
b.
Set circuit board switch SW3 as follows:
SW3-1 = ON for 50 Hz operation or OFF for 60 Hz operation
SW3-2 = OFF (no additional time delay for the 50 element)
SW3-3 = ON (Westinghouse CO type characteristic curves)
SW3-4 = ON (integrating reset characteristic)
c.
Set TIME DIAL to 0.0.
d.
Set CURVE to S.
e.
Set TIME PICKUP to 15.0.
f.
Set INST PICKUP to 02.
2.
Apply and slowly increase current to terminals 8 and 9 until the 50 output contacts close. The applied
current should be between 1.935 and 2.065 Aac.
3.
Decrease the applied current until the 50 output contacts open.
4.
Set INST PICKUP to 08.
5.
Slowly increase the current applied to terminals 8 and 9 until the 50 output contacts close. The
applied current should be between 7.815 and 8.185 Aac.
6.
Reduce the applied current to zero.
Manual Trip
1.
Configure the relay for manual trip testing:
a.
Connect the test setup as shown in Figure 10.
b.
Set circuit board switch SW3 as follows:
SW3-1 = ON for 50 Hz operation or OFF for 60 Hz operation
SW3-2 = OFF (no additional time delay for the 50 element)
SW3-3 = ON (Westinghouse CO type characteristic curves)
SW3-4 = ON (integrating reset characteristic)
c.
Set TIME DIAL to 0.0
d.
Set CURVE to S.
e.
Set TIME PICKUP to 1.0.
f.
Set INST PICKUP to 90.
2.
Apply 0.9 Aac to terminals 8 and 9 (0.9 Aac provides relay operating power but is below the pickup
threshold.)
3.
Connect a jumper to the Time Overcurrent Manual Trip jacks. Verify that the stop input of the test set
timer recognizes a 51 contact closure.
BE1-50/51B-240
Testing