Elgar CW-M Series
4.
Derate the above wire gauge (use a heavier gauge) for higher environmental
temperatures since conductor resistance increases with temperature.
Temperature Current
Degrees Capability
C
F
40 104
80%
5.
Derate the above wire gauge (use a heavier gauge) for an increased number of
current carrying conductors. This offsets the thermal rise of bundled conductors.
Number of
Current
Conductors Capability
3 to 6
80%
Above 6
70%
6.
The preferred insulation material is application dependent. Elgar's recommend-
ation is any flame retardant, heat resistant, moisture resistant thermoplastic
insulation rated to a nominal 75ºC (167ºF). Voltage breakdown must exceed the
combined effects of:
•
The rated output voltage;
•
Transient voltages induced onto the conductors from any source;
•
The differential voltage to other nearby conductors; and,
•
Safety margins to accommodate degradations due to age, mechanical
abrasion and insulation migration caused by bending and temperature.
7.
As frequency increases, the magnetic field of the current carrying conductors
becomes more significant in terms of adverse coupling to adjacent electrical
circuits. Use twisted pairs to help cancel these effects. Shielded twisted pairs
are even better. Avoid close coupling with nearby cables by using separate
cable runs for high power and low power cables.
8.
The above general values and recommendations should be reviewed, modified,
and amended as necessary for each application. Cables should be marked with
appropriate safety WARNING decals as hazardous voltages may be present.
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Summary of Contents for CW 1251M
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Page 24: ...Elgar CW M Series Figure 3 2 Mounting Dimensions Front and Rear Views CW 801M CW 1251M 14...
Page 25: ...Elgar CW M Series Figure 3 3 Mounting Dimensions Front and Rear Views CW 2501M 15...
Page 26: ...Elgar CW M Series Figure 3 4 Mounting Dimensions Top and Side Views CW 801M CW 1251M 16...
Page 27: ...Elgar CW M Series Figure 3 5 Mounting Dimensions Top and Side Views CW 2501M 17...
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Page 38: ...Elgar CW M Series 4 3 2 Setup for Six in Parallel Configuration 28...
Page 39: ...Elgar CW M Series 4 3 3 Setup for Six Phase Configuration 29...
Page 40: ...Elgar CW M Series 4 3 4 Setup for Two Phase Configuration 30...
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