5-2
BE1-51 Tests and Adjustments
9137200997 Rev D
(d)
Sensing Input Type I or X (Two-Phase with Neutral Sensing).
Refer to Figure 5-4.
Ensure that the timed output terminals 1 and 10 are connected. Also, verify that either A,
B, or C current sense terminals are connected initially (N terminals will be connected later
in the test).
Step 2. Remove the relay front cover.
Step 3. Set the front panel
TIME DIAL
selector and, if present, the front panel
TIME DIAL (NEUTRAL)
selector to 99.
Step 4. Adjust the front panel
INST 1
and
INST 2
controls, if present, fully clockwise (CW).
Step 5. Adjust the front panel
TAP CAL
control, and if present, the front panel
TAP (NEUTRAL)
control
fully CW.
Step 6. Ensure that the relay front panel
TARGETS
, if present, are reset.
Figure 5-1. Test Setup for Sensing Input Type K (Single-Phase Sensing)
Figure 5-2. Test Setup for Sensing Input Type G (Three-Phase Sensing)