9252000898 Rev —
BE1-50/51B-235/-236 Testing
5-9
d. Set CURVE to S.
e. Set TIME PICKUP to 0.2.
f.
Set INST PICKUP (50-A) to 18.0.
g. Set INST PICKUP (50-B) (accessed at the top side of the assembly) at F0 (3.0 Aac).
2. Apply 0.4 Aac to terminals 8 and 9 to trip the 51 relay output.
3. Slowly increase the target current source and verify that the Time target operates at the level of
current determined by the Target Operating Current Jumpers.
The Target Operating Current Jumpers are located on the circuit board and identified as J1 and J2.
J1 sets the minimum current range for the 50-A target and J2 sets the minimum current range for the
51 target. A jumper installed across pins 1 and 2 gives a minimum operating current of 0.9 to 2.25 A.
A jumper installed across pins 2 and 3 gives a minimum operating current of 80 to 200 mA.
4. Remove the target and sensing current and reset the target.
5. Set TIME PICKUP to 1.8.
6. Set INST PICKUP (50-A) to 0.2.
7. Apply 0.4 Aac to terminals 8 and 9 to trip the 50-A relay output.
8. Slowly increase the target current source and verify that the Instantaneous target operates at the
level of current determined by the Target Operating Current Jumpers.
9. Remove the target and sensing current and reset the targets.
Figure 5-6. Target Indicator Test Setup
Manual Trip
1. Configure the relay for manual trip testing:
a. Connect the test setup as shown in Figure 5-4.
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-A element)
SW3-3 = ON (Westinghouse/ABB type characteristic curves)
SW3-4 = ON (integrating reset characteristic)
c. Set TIME DIAL to 0.0
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