GE CEY51A Instructions Manual page 27

GEK-1275
TABLE XI II
ANGLE OF MAXIMUM TORQUE ADJUSTMENT FOR 600 ANGLE
Unit
Location
Top
Middle
Bottom
Top
Middle
Bottom
Top
Middle
Bottom
Top
Middle
Bottom
Reach Restraint
Tap Tap
Unit Ohms
,,1-2
,,2·3
,,3·1
,,1·2
,,2·3
,,3·1
"1-2
,,2-3
,,3·1
,,1·2
,,2·3
,,3·1
1.5 100%
1.5 100%
1.5 100%
04
0.4
0.4
3.0
50%
50%
50%
100%
3.0 100%
3.0 100%
.75 50%
.75
.75
50%
50%
Connect Leads to Relay
Studs as Follows
Jumper ",-Angle Meter Reads
Relay Angleof Test
Lead A Lead B Lead C Lead D Studs Max Torgue Angles Set At
14-15 13·16·17
13-16-17 18·19·20
18·19·20 14·15
14·15 13·16·17
13·16·17 18·19·20
18·19·20 14·15
14-15 13·16·17
13·16·17 18·19-20
18-19·20 14·15
14·15 13·16·17
13·16·17 18-19-20
18-19-20 14·15
5
7
9
5
7
9
5
7
9
5
7
9
7
9
5
7
9
5
7
9
5
7
9
5
6·8-10
6·8·10
6-8-10
6-8·10
6-8·10
6-8·10
6-8·10
6-8·10
6-8-10
6·8-10
6-8-10
6·8·10
300"
300"
300"
300"
300"
300"
300"
300"
300"
300"
300"
300"
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
330 & 270
45
45
45
45
45
45
90
90
90
48
48
48
Pickup
Amps Adjust
17.3 Xll
17.3 X12
17.3 X13
28.1 Xl1
28.1 X12
28.1 X13
20 Xll
20
20
20
20
20
X12
X13
Xll
X12
X13
phase angle adjustments should be made at 120 volts and 5 amperes). Then set VAB at
5
volts and adjust the proper reactor so that the mho unit closes its contacts at
pickup amperes
~
2%. \ The pickup should then be checked at 2700 with the same set
voltage. Pickup should be at pickup amperes
~ 2%.
Refine the adjustments of the
reactors until the pickup is within limits at both 2700 and 3300.
Note that an adjustment of the angle of maximum torque will have a secondary
effect on the reach of the unit, and vice versa. Therefore, to ensure accurate
settings it is necessary to recheck the reach of a unit whenever its angle of
maximum torque setting is changed, and to continue a "cross-adjustment" routine of
reach and angle of maximum torque until both are within the limits specified above.
As noted in Table II Under the section on RATINGS, the angle of maximum torque
of the mho units can be adjusted up to 750 if desired. If this change is made, the
reach of the mho units wi
11
increase sl ightly. To make thi s adjustment, refer to
Table XIV and proceed as outlined below.
TABLE XIV
ANGLE OF MAXIMUM TORQUE ADJUSTMENT FOR 750 ANGLE
Reach Restraint
Tap Tap Unit
Location Unit Ohms
Top ,,1-2 1.5 100%
Middle
,,2·3
1.5 100%
Bottom ,,3·1 1.5 100%
Top ,,1·2 0.4 50%
Middle ,,2·3 0.4 50%
Bottom
,,3·1 0.4 50%
Top "1-2
3.0 100%
Middle ,,2·3 3.0 100%
Bottom 03·1
3.0 100%
Top 01·2
.75 50%
Middle ,,2-3
.75 50%
Bottom
,,3·1
.75 50%
Connect Leads to Relay
Studs as Follows
Lead A Lead B Lead C Lead
D
14·15 13·16-17
13·16-17 18·19-20
18-19·20 14·15
14·15 13·16·17
13·16·17 18·19-20
18·19·20 14·15
14·15 13·16·17
13·16-17 18·19·20
18·19-20 14·15
14-15 13·16-17
13·16·17 18·19·20
18·19·20 14-15
5
7
9
5
7
9
5
7
9
5
7
9
25
7
9
5
7
9
5
7
9
5
7
9
5
Jumper ,,-Angle Meter Reads
Relay Angle of Test
V A.B
Pickup
Studs Max Torgue Angles Set At Amps Adjust
6-8-10
6·8·10
6·8·10
6·8·10
6·8·10
6·8·10
6·8·10
6·8·10
6·8·10
6·8·10
6·8·10
6·8-10
285"
285"
285"
285"
285"
285"
285"
285"
285"
285"
285"
285"
315&255
315 & 255
315&255
315&255
315&255
315&255
315 &255
315&255
315&255
315&255
315&255
315&255
45
45
45
45
45
45
90
90
90
48
48
48
17.3 Xll
17.3 X12
17.3 X13
28.1 Xll
28.1 X12
28.1 X13
20 Xll
20 X12
20 X13
20 Xll
20 X12
20 X13