Burdens - GE SBC23A Instructions Manual

The AC burden for each of the current transformer circuits is tabulated in Table
VI for amperes of
5
minimum and maximum respectively.
TRANSACTOR TAP SETTING {AMPS)
Phase
Phase
Phase
Residual
Residual
Residual
TRANSACTOR TAP SETTING (AMPS)
Phase
Phase
Phase
Residual
Residual
Residual
The overall battery drain at relay terminals
for the three possible relay DC ratings under three possible operating conditions.
RATED DC
125
48
250
NOTE: The use of the optional contact converter circuit adds an additional
milliampere drain.
GEK-45464

BURDENS

and Hz current through each basic current setting range,
50 60
TABLE VI
BURDENS FOR 5
IMPEDANCE (OHMS)
1 - 2
2 - 4
4 -10
0.5- 1
1 - 2
2 - 5
BURDENS FOR 5
IMPEDANCE (OHMS)
1 - 2
2 - 4
4
-10
0.5- 1
- 2
1
2
- 5
TABLE VII
CONDITION
Dropped out (No Fault)
Timing: Electronics
IT Unit
Tripping: BFT Unit
Total All Circuits
Dropped out (No Fault)
Timing: Electronics
IT Unit
Tripping: BFT Unit
Total All Circuits
Dropped out (No Fault)
Timing: Electronics
IT Unit
Tripping: BFT Unit
Total, All Circuits
AMP 50 Hz RELAYS
POWER FACTOR (DEG. LAG )
0.0123
0.0052
0.0024
0.0347
0.0123
0.0052
AMP 60 Hz RELAYS
POWER FACTOR (DEG. LAG )
0.0127
0.0053
0.0024
0.0351
0.0127
0.0053
#17 and #18 is itemized in Table VII
NOMINAL MILLIAMPERE DC DRAIN
11
28.5
16.5
8.9
43.0
28.5
16.5
24.0
14.0
7.7
36.0
24.0
14.0
No Drain
131
63
63
257
No Drain
138
48
48
234
No Drain
115
63
63
241
15