TDK-Lambda Genesys GENH Series User Manual page 46

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
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
(mm ) 2
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
Resistivity
voltage drop to 1V or less
5A 10A
2.526 80 40
1.589 120 60
0.9994 200 100
0.6285 320 160
0.3953 500 250
0.2486 800 400
0.1564 1200 600
0.0983 2000 1000
Maximum length in meters to limit
voltage drop to 1V or less
Ohm/Km
5A 10A
8.21 24.0 12.0
5.09 39.2 18.6
3.39 59.0 29.4
1.95 102.6 51.2
1.24 160.0 80.0
0.795 250.0 125.0
354.0 177.0
0.565
Maximum length=1000/(current x resistivity)
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 Netzteil
besch digen. Ein Vertauschen der Sense-
Leitungen kann das Netzteil bei lokalem wie bei
Remote-Sensing besch digen. (Verbinden Sie
daher nicht -S mit +V oder +S mit -V).
19
19
20A 50A 150A
20 8 2
30 12 3.4
50 20 6
80 32 10
125 50 16
200 80 26
300 125 40
500 200 68
20A 50A 150A
6.0 2.4 0.8
9.8 4.0 1.4
14.8 5.8 2.0
25.6 10.2 3.4
16.0
40.0 5.4
25.2
62.0 8.4
35.4 11.8
88.0
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