5-2
BE1-32R, -32 O/U INSTALLATION
NOTE
Main relay contacts, auxiliary output contacts, and targets (if present) should actuate.
OVER and UNDER multiplier switches (X) - 0.1
OVER TAP pickup selector B
Step 2. With the relay powered up, apply nominal input voltage according to sensing input type and range.
Step 3. Apply a current source to the relay current sensing inputs and increase the source until it is greater than
the underpower pickup point.
Step 4. Slowly decrease the current source to a point where the UNDER PICKUP LED Illuminates.
Verify wattmeter reads within ±2 % or 0.1 watt, whichever is greater of 95% of the front panel selected
setting (LOW range, TAP B).
Step 5. Slowly increase the current source to a point when the UNDER PICKUP LED just extinguishes. Verify
wattmeter reading is within 105 % of the underpower pickup value established in Step 4.
Instantaneous Time (Overpower)
Step 1. Connect the timer/counter so that timing begins when sensing current is applied and ends when the
trip output circuit is energized.
Step 2. Select a mid-range pickup point and apply input voltage according to sensing input type and range.
Step 3. Apply (step) current to obtain two times the selected watts setting at unity power factor and measure
the interval from initiation to contact closure.
RESULT: Measured time should be less than 80 ms (60 Hz) or less than 100 ms (50 Hz).
Definite Time (Overpower)
Step 1.
Connect the timer/counter so that timing begins when sensing current is applied and stops when
the trip output circuit is energized.
Step 2.
Make the following relay front panel adjustments:
RANGE switch - LOW
OVER TAP pickup selector - B
OVER TIME DELAY - 01
OVER multiplier switch (X) - 0.1
UNDER pickup control - fully CCW
Step 3.
Apply nominal input sensing voltage and operating power.
Step 4.
Adjust (but do not apply) the current source to two times the tap value. Apply the current and
measure the interval from initiation to output actuation.
RESULT: The measured interval should be 0.1 ±0.050 seconds.
Step 5.
Repeat Steps 1 through 4 for TIME DELAY settings of 05 and 99.
RESULT:
Setting
Expected Time
50
5.0 ±0.25 seconds
99
9.9 ±0.50 seconds
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