Basler BE1-67, Instruction Manual, Page: 65 / 73

5-8 Testing BE1-67
Figure 5-8.
"
= 30°
Figure 5-9.
"
= 45°
Procedure 2
(For use with switch selectable CHARACTERISTIC ANGLE, options 3-2 and 3-4.)
Step 1. Perform the preliminary
setup.
Step 2. Turn the CHARACTER-
ISTIC ANGLE switch to
30°.
Step 3. Adjust the input voltage
source for 120 Vac at a
phase angle of 0°.
Step 4. Adjust the input current
source for 1.0 ampere
(LOW range ) or 3.0
amperes (HIGH range) at a
phase angle of +90° (90°
leading). The INHIBIT LED
indicator should be OFF,
and the TIMING LED ON
(i.e., the appropriate phase
LEDs thereof on a 3-phase
unit). If not, current or
voltage connections are
reversed and should be
corrected.
Step 5. Vary the phase angle of the
input current through 360°
and record the phase
angles at which the
INHIBIT LED is OFF. When
shown on a polar plot, the
result should be a straight
line (through the origin )
from -30° to +150° ±5°.
This plot defines the trip
region as shown in Figure
5-8.
Step 6. Adjust the CHARACTER-
ISTIC ANGLE control to a
setting of 45°.
Step 7. Vary the phase angle of the
input current through 360°
and record the phase
angles within which the
INHIBIT LED is OFF. When
shown on a polar plot, the
result should be a straight
line (through the origin)
from -45° to +135° ±5°.
This plot defines the trip region as shown in Figure 5-9.