Basler Electric BE1-87T - Manual (Page 112)

5-16 BE1-87T Test Procedures 9171300990 Rev V
Step 2. Connect the input being tested to the current source as shown in the appropriate diagram,
Figures 5-1 through 5-4.
Step 3. Set the INPUT under test to the 0.78 tap position as shown in Table 5-6. Set the RESTRAINED
PICKUP LEVEL switch to position A (15%). Apply current to the input under test, increasing
the current until the REST. TRIP LED lights. At this point, the input current should be 0.273 A
± 6% ± 20 mA.
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 5-1 through 5-4, 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