TDK-Lambda Genesys GENH Series - Page 46

19
Table 3-2: Maximum wire length for 1V drop on lead (in feet)
Table 3-3: Maximum wire length for 1V drop on lead (in meters)
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 inAmerican and European
dimensions respectively.
Wire size
AWG
14
12
10
8
6
4
2
0
2.526
1.589
0.9994
0.6285
0.3953
0.2486
0.1564
0.0983
5A
80
120
200
320
500
800
1200
2000
10A
40
60
100
160
250
400
600
1000
20A
20
30
50
80
125
200
300
500
50A
8
12
20
32
50
80
125
200
150A
2
3.4
6
10
16
26
40
68
Resistivity
Ohm/1000ft
Maximum length in Feet to limit
voltage drop to 1V or less
Cross sect.
area
(mm )2
2.5
4
6
10
16
25
35
8.21
5.09
3.39
1.95
1.24
0.795
0.565
5A
24.0
39.2
59.0
102.6
160.0
250.0
354.0
10A
12.0
18.6
29.4
51.2
80.0
125.0
177.0
20A
6.0
9.8
14.8
25.6
40.0
62.0
88.0
50A
2.4
4.0
5.8
10.2
16.0
25.2
35.4
150A
0.8
1.4
2.0
3.4
5.4
8.4
11.8
Resistivity
Ohm/Km
Maximum length in meters to limit
voltage drop to 1V or less
For currents not shown in Table 3-2 and 3-3, use the formula:
Maximum length=1000/(current x resistivity)
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
VORSICHT
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.)
Vermeiden Sie bei lokalem Sensing unbedingt
einen Kurzschluss zwischen -V und +LS oder
+S sowie zwischen -LS und -V oder -S. Ein
solcher Kurzschluss w rde das Netzteilü
besch digen. Ein Vertauschen der Sense-ä
Leitungen kann das Netzteil bei lokalem wie bei
Remote-Sensing besch digen. (Verbinden Sieä
daher nicht -S mit +V oder +S mit -V).
19