Installation and Operation
Sorensen DCS Series 1kW and 1.2kW Supplies
2-8
M362500-01 Rev K
2.6
Standard Operation
Reliable performance of the DCS power supply can be obtained if certain basic precautions are
taken when connecting it for use on the lab bench or installing it in a system.
To obtain a stable, low noise output, careful attention should be paid to factors such as
conductor ratings, system grounding techniques and the way in which the load and remote
sensing connections are made.
2.6.1
Load Conductor Ratings
Table 2–1 lists the maximum allowable load wiring length (in feet) for a specified wire gauge and
power supply model operating at full rated output. The lengths indicated are based on PVC
insulated wire with a maximum operating temperature of 105°C. To overcome impedance and
coupling effects, which can degrade the power supply performance, use leads of the largest
gauge and shortest length possible.
Wire Size (AWG)
Model
2
4
6
8
10
12
14
16
18
8V
19
12
–
–
–
–
–
–
–
10V
19
12
–
–
–
–
–
–
–
20V
30
30
30
23
–
–
–
–
–
33V
30
30
30
30
22
14
–
–
–
40V
30
30
30
30
30
18
–
–
–
50V
30
30
30
30
30
23
13
–
–
60V
30
30
30
30
30
26
16
10
–
80V
30
30
30
30
30
30
22
20
–
100V
30
30
30
30
30
30
22
20
–
150V
30
30
30
30
30
30
28
26
–
300V
30
30
30
30
30
30
30
30
–
600V
30
30
30
30
30
30
30
30
30
Table 2–1 Wire Size and Length
2.6.2
Load Connection and Grounding
Proper connection of distributed loads is an important aspect of power supply application. A
common mistake is to connect leads from the power supply to one load, from that load to the
next load, and so on for each load in the system. In this
parallel power distribution
method,
the voltage at each load depends on the current drawn by the other loads and DC ground loops
are developed. Except for low current applications, this method should not be used.
