5-10
BE1-87T Test Procedures
9171300990 Rev R
Step 9.
Three-Phase Units Only:
Repeat Steps 6, 7 and 8 for phases B and C. (Refer to Figures 5-2
through 5-5, as appropriate, for the terminal numbers of the phase B and C inputs.)
Table 5-1. Restrained Pickup Test: 5 A, 50 or 60 Hz
Input 1, Tap = 2.0
Input 2, Tap = 3.8
Increasing Input 1 Decreasing Input 2
% Slope Amperes
X Tap
Amperes
X Tap
Trip Amperes
Trip Amperes
15
2.0
1
3.8
1
2.70 ±0.26
2.47 ±0.25
15
4.0
2
7.6
2
4.71 ±0.38
6.27 ±0.48
15
6.0
3
11.4
3
7.06 ±0.52
9.69 ±0.68
15
10.0
5
19.0
5
11.76 ±0.81
16.15 ±1.07
25
2.0
1
3.8
1
2.70 ±0.26
2.47 ±0.25
25
4.0
2
7.6
2
5.33 ±0.42
5.70 ±0.44
25
6.0
3
11.4
3
8.00 ±0.58
8.55 ±0.61
25
10.0
5
19.0
5
13.33 ±0.90
14.25 ±0.96
50
2.0
1
3.8
1
4.00 ±0.34
1.90 ±0.21
50
4.0
2
7.6
2
8.00 ±0.58
3.80 ±0.33
50
6.0
3
11.4
3
12.00 ±0.82
5.70 ±0.44
50
10.0
5
19.0
5
20.00 ±1.30
9.50 ±0.67
30
2.0
1
3.8
1
2.86 ±0.27
2.47 ±0.25
30
6.0
3
11.4
3
8.57 ±0.61
7.98 ±0.58
35
2.0
1
3.8
1
3.08 ±0.28
2.47 ±0.25
35
6.0
3
11.4
3
9.23 ±0.65
7.41 ±0.54
40
2.0
1
3.8
1
3.33 ±0.30
2.28 ±0.24
40
6.0
3
11.4
3
10.00 ±0.70
6.84 ±0.51
60
2.0
1
3.8
1
5.00 ±0.40
1.52 ±0.19
60
6.0
3
11.4
3
15.00 ±1.00
4.56 ±0.37
Input (or Tap) Switch Verification
Each input is scaled using a combination of two rotary switches. Verify the switches as follows.
Step 1.
Determine the Sensing Input Type (the first digit of the Style Number shown on the front panel):
A
Single-phase, two inputs
B
Single-phase, three inputs
C
Single-phase, four inputs
D
Single-phase, five inputs
E
Three-phase, two inputs each phase
G
Three-phase, three inputs each phase
Step 2.
Connect the input being tested to the current source, as shown in the appropriate
TEST
SETUP
, Figures 5-2 through 5-5.
Step 3.
Set the input under test to the 3.9 tap position as shown in Table 5-2. Set the
RESTRAINED
PICKUP LEVEL
switch to position
A
(15%). Apply current to the input under test, increasing
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