BE1-32R, -32 O/U TESTING
5-1
NOTE
Units with inverse or instantaneous timing options will not have a multiplier switch.
NOTE
Main relay contacts, auxiliary output contacts, and targets (if present) should actuate.
NOTE
Units with inverse or instantaneous timing options will not have a multiplier switch.
SECTION 5 • TESTING
GENERAL
The following procedures verify operation and calibration of the relay.
Results obtained from these procedures may not fall within specified tolerances. When evaluating results,
consideration must be given to three prominent factors.
The inherent error of the test equipment used.
The inconsistent method of testing (i.e. Timing start signal).
The tolerance level of external components used in the test setup.
OPERATIONAL TEST PROCEDURES
Overpower Pickup and Dropout (Unity Power Factor)
Step 1. Connect the relay for the appropriate sensing input type, reference Figures 5-1 through 5-5.
Step 2. Make the following relay front panel adjustments:
RANGE switch - LOW
OVER TAP pickup selector B
OVER TIME DELAY setting - 00 (instantaneous)
OVER multiplier switch (X) - 0.1
UNDER pickup control fully CCW
Step 3. Apply operating power to the relay (case terminals 3 and 4). Apply nominal input voltage according
to sensing input type and range. (A single voltage source may be paralleled to the relays inputs to
simulate a three-phase source.)
Step 4. Apply a current source to the relay current sensing inputs and increase the source to a point where the
OVER PICKUP LED is illuminated.
Verify wattmeter reads within ±2 % of the front panel selected setting (LOW range, TAP B).
Step 5. Slowly decrease the current source to a point where the OVER PICKUP LED just extinguishes. Verify
the wattmeter reading is within 98% of the pickup value established in Step 4.
Step 6. Reset targets if present.
Step 7. Repeat Steps 1 through 6 for OVER pickup TAP settings of E and K.
Underpower Pickup and Dropout (Unity Power Factor)
Step 1. Make the following relay front panel adjustments:
RANGE switch - LOW
UNDER pickup control - fully CW (95 %)
UNDER TIME DELAY - 00 (instantaneous)
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