Table of Contents
Advertisement
2. Wire size should be selected to enable voltage drop per lead to be less than 1.0V at the rated
current. Although units will compensate for up to 5V in each load wire, it is recommended to
minimize the voltage drop (1V typical maximum) to prevent excessive output power consum-
ption from the power supply and poor dynamic response to load changes. Please refer to
Tables 3-2 and 3-3 for maximum wire length to limit voltage drop in American and European
dimensions respectively.
Wire size
Resistivity
AWG
Ohm/1000ft
14
12
10
8
6
4
2
0
Table 3-2: Maximum wire length for 1V drop on lead (in feet)
Cross sect.
Resistivity
area
2
(mm )
2.5
4
6
10
16
25
35
Table 3-3: Maximum wire length for 1V drop on lead (in meters)
For currents not shown in Table 3-2 and 3-3, use the formula:
where current is expressed in Amperes and resistivity in ohms/km or ohms/1000ft.
3.9.3 Wire termination
The wires should be properly terminated with terminals securely attached. DO NOT use unter-
minated wires for load connection at the power supply.
CAUTION
When local sensing, a short from +LS or +S to -V or -S or -
LS, will cause damage to the power supply. Reversing the
sense wires might cause damage to the power supply in
local and remote sensing. (Do not connect -S to +V or +S to
-V.)
Maximum length in Feet to limit
10A
2.526
40
1.589
60
0.9994
100
0.6285
160
0.3953
250
0.2486
400
0.1564
600
0.0983
1000
Maximum length in meters to limit
Ohm/Km
10A
8.21
12.0
18.6
5.09
3.39
29.4
1.95
51.2
1.24
80.0
0.795
125.0
0.565
177.0
Maximum length=1000/(current x resistivity)
voltage drop to 1V or less
20A
50A
100A
20
8
4
12
30
6
50
20
10
80
32
15
125
50
25
200
80
40
125
300
60
500
200
100
voltage drop to 1V or less
100A
20A
50A
1.2
6.0
2.4
4.0
2
9.8
2.9
14.8
5.8
5.1
25.6
10.2
8
40.0
16.0
12.6
62.0
25.2
35.4
17.7
88.0
Vermeiden Sie bei lokalem Sensing unbedingt einen
Kurzschluss zwischen -V und +LS oder +S sowie
zwischen -LS und -V oder -S. Ein solcher Kurzschluss
würde das Netzteil beschädigen. Ein Vertauschen der
Sense-Leitungen kann das Netzteil bei lokalem wie bei
Remote-Sensing beschädigen. (Verbinden Sie daher
nicht -S mit +V oder +S mit -V).
20
20
200A
400A
2
---
3
---
5
2
8
4
12
6
20
10
30
15
50
25
200A
400A
0.6
0.3
1.0
0.5
1.45
0.7
2.5
1.25
4
2
6.3
3.1
8.8
4.4
VORSICHT
Advertisement
Table of Contents
