*(.%
44
SPECIFICATIONS
Burdens
Burdens for the over-current units are listed in Table 3. Burdens decrease with in-
creasing current above minimum setting, due to the power supply shunting in the power
supply circuit. Since the power supply is the major portion of the burden, the burden for
a given input current will be constant, irrespective of pick-up settings on both TOC and
IOC units.
Table 3 Burden Settings
Burden @ Minimum Setting
Burden in ohms (Z) at multiples
of minimum pickup
unit
range
Hz
R
jX
Z
Ð
3X
10X
20X
100X
1A
.1 / 31.8
60
28.8
29.2
41.3
45
°
9.36
2.32
1.24
.768
5A
.5 / 15.9
60
1.28
1.15
1..74
42
°
.394
.094
.052
.034
4
55 6 7 8
1
2
3
4
55 6 7
10
2
3
4
55 6
100
3
4
1
2
33
4
10
2
33
4
100
2
DIAC, DIFC, & DSFC
OVERCURRENT RELAYS
Burden
0.1
2
3
4
55 6 7 8
1
2
3
4
55 6 7
10
2
5AMP Model
1AMP Model
Power Management
Frequency: 50/60 Hertz
0.1 - 3.18 (1 Ampere Relays)
General Electric CO., 205 Great Valley Parkway, Malvern, PA
0361A7504
Input Current
Current Range: 0.5 - 15.9 ( 5 Ampere Relays)
GES10040
B
urden
in
V
A
FIGURE 30 Burden curve
Summary of Contents for DIAC
Page 29: ...28 FIGURE 18 DIAC and DSFC External Internal Connections...
Page 30: ...29 FIGURE 19 DIFC External Internal Connections...
Page 31: ...30 FIGURE 20 DIAC Panel Mounting and Drilling...
Page 32: ...31 FIGURE 21 DIFC Panel Mounting and Drilling...
Page 33: ...32 FIGURE 21A SURFACE MOUNTING DIFC...
Page 34: ...33 FIGURE 22 DSFC Panel Mounting and Drilling...
Page 42: ...41 FIGURE 27 9819647 8919648 DIAC Front and Rear Views...
Page 43: ...42 FIGURE 28 8919652 8919653 DIFC Front and Rear Views...
Page 44: ...43 FIGURE 29 8919632 8919661 DSFC Front and Rear Views...