5-16
BE1-87T Test Procedures
9171300990 Rev R
Step 4.
Repeat Step 3 for the additional tap positions shown in Table 5-6. This verifies the accuracy of
all the binary combinations of the rotary switches.
Step 5
. Test the other inputs by reconnecting to the next pair of terminals for your relay and repeating
Steps 3 and 4. (The successful completion of these tests will verify the electrical integrity of all
the tap switches.)
Table 5-6. Input Verification
∗
: 1 A, 50 or 60 Hz
Tap† Position
Input Current Range
at Pickup
0.78
0.24 - 0.31 A
0.86
0.26 - 0.34 A
1.28
0.40 - 0.49 A
1.56
0.49 - 0.60 A
∗
Pickup occurs at 0.35 x Tap. See Figure 1-2.
†
The setting of the upper and lower
INPUT
switches of the input being
tested. (Reference Figures 2-1 to 2-4.)
Unrestrained Pickup Verification
Step 1.
Set
the
INPUT 1
(tap) switches to the
2.0
A position. Connect the relay as appropriate (refer to
Figures 5-2 through 5-5, as appropriate) using terminals 11 & 13 (Input 1 for both single-phase
and three-phase units).
Step 2.
Set
the
UNRESTRAINED PICKUP LEVEL
switch to position
A
(
6 X TAP
). Increase the input
current until the
UNREST. TRIP
LED lights (disregard the
REST. TRIP
LED). This should occur
at 2.4 A
±
3% as indicated in Table 5-7.
Step 3.
Repeat Step 2 using the other
UNRESTRAINED PICKUP LEVEL
switch positions given in
Table 5-7.
Step 4.
For Three-Phase Units Only:
Repeat Steps 1 through 3 for Phase B of input 1 (terminals 12 &
13) and Phase C of input 1 (terminals 14 & 13).
Table 5-7. Unrestrained Pickup Verification, 1 A, 50 or 60 Hz
Unrestrained
Pickup Level
Input 1 Tap
Position
Input Current at
Pickup ±3%
A (6 X TAP)
0.4
2.4 A
J (14 X TAP)
0.4
5.6 A
S (21 X TAP)
0.4
8.4 A
Second-Harmonic Restraint Verification
Step 1.
Set
the
INPUT 1
(tap) switches to the
0.4
A position. Connect the relay as (refer to Figures 5-2
through 5-5, as appropriate) using terminals 11 & 13 (Input 1 for both single-phase and three-
phase units).
Step 2. Three-Phase Units Only:
Set the Calibrate toggle switch
S2
(letter
D
of Figure 2-4) to the
CAL
position on each of the three Analog #1 boards. These three toggle switches are readily
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