TDK GENESYS 750W HALF RACK User Manual
Page 27
83-507-5002 Rev. B
19
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 recom-
mended to minimize the voltage drop (1V typical maximum) to prevent excessive output
power consumption from the power supply and poor dynamic response to load changes.
Please refer to Tables 3-2 and 3-3 for minimum wire length (to limit voltage drop) in
American and European dimensions respectively.
Maximum length in Feet to limit
voltage drop to 1V or less
Wire size
AWG
Resistivity
OHM/1000ft
5A
10A
20A
50A
150A
14
2.526
80
40
20
8
2
12
1.589
120
60
30
12
3.4
10
0.9994
200
100
50
20
6
8
0.6285
320
160
80
32
10
6
0.3953
500
250
125
50
16
4
0.2486
800
400
200
80
26
2
0.1564
1200
600
300
125
40
0
0.0983
2000
1000
500
200
68
Table 3-2: Maximum wire length for 1V drop on lead (in feet)
Maximum length in meters to limit
voltage drop to 1V or less
Cross sect.
area
(mm²)
Resistivity
OHM/Km
5A
10A
20A
50A
150A
2.5
8.21
24.0
12.0
6.0
2.4
0.8
4
5.09
39.2
18.6
9.8
4.0
1.4
6
3.39
59.0
29.4
14.8
5.8
2.0
10
1.95
102.6
51.2
25.6
10.2
3.4
16
1.24
160.0
80.0
40.0
16.0
5.4
25
0.795
250.0
125.0
62.0
25.2
8.4
35
0.565
354.0
177.0
88.0
35.4
11.8
Table 3-3: Maximum wire length for 1 V drop on lead (in meters)
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 untermi-
nated 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).