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are connected.
lead is put in the 60 tap, then the #1 tap setting, T R is 5 plus 6 0, or 65.
n ot be set for less than ten percent.
CURRENT CIRCUIT
The current burden imposed by each current circuit at five amperes is listed in
1
Tab
e I I I.
*
AMPS
5
5
5
5
5
5
POTENT IAL C IRCU IT
The maximum potential burden imposed by the two units in the relay is shown in
Table IV.
*
VOLTS
120
120
The potential burden is maximum when the restraint taps, T R , are set for 100 and
the angle of maximum torque is near 25 degrees lead.
At any tap setting, T R , the potential burden for each unit will be as follows:
* Indicates Revision
For example, if the upper #1 lead is put in the 5 tap, and the lower #1
BASIC
OH M TAP
HERTZ
60
0. 5
60
1. 5
60
3. 0
50
0. 5
50
1. 5
50
3. 0
HERTZ
60
50
Watts+ jVars = (A+ jB) x f
GEK-49778
BURDENS
TABLE II I
R
X
PF
o.
0. 10
0. 09
0. 12
0. 10
0. 77
0. 16
0. 12
0. 80
0. 09
0. 08
0. 74
0. 11
0. 08
0. 80
0. 10
0. 81
0. 14
TABLE IV
R
X
PF
386
536
0. 59
497
-523
0. 69
8
WATTS
VA
2. 41
3. 35
72
3. 06
3. 95
4. 11
5. 13
2. 14
2. 89
2. 75
3. 45
3. 59
4. 41
WATTS
VA
12. 74
21. 8
13. 74
20. 0
T R
100
T R should
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