Cisco SE2800 Quick Start Guide - Page 25
Connecting Source A and Source B with Common Positive Terminals
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Note When source A and source B are wired with common negative terminals, as in Figure 22, discharging does not occur and there is no restriction requiring that source A and source B voltages be equal. Figure 23 Connecting Source A and Source B with Common Positive Terminals Va voltage = Vb voltage (greater than 0.25 V) Va voltage = Vb voltage (within 0.25 V) AVa + A+ AVa + A+ + B+ Vb B- + B+ Vb B- 127040 In Figure 24, source A and source B are wired with opposite polarity grounds. Do not use this configuration. Caution Do not use the DC input configuration shown in Figure 24. Figure 24 Source A and Source B Wired with Opposite-Polarity Grounds AVa + A+ + B+ Vb B- 127041 25
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25
Note
When source A and source B are wired with common negative terminals, as in Figure 22, discharging does not occur
and there is no restriction requiring that source A and source B voltages be equal.
Figure 23
Connecting Source A and Source B with Common Positive Terminals
In Figure 24, source A and source B are wired with opposite polarity grounds.
Do not
use this configuration.
Caution
Do not
use the DC input configuration shown in Figure 24.
Figure 24
Source A and Source B Wired with Opposite-Polarity Grounds
A-
A+
B+
B-
Va
Vb
+
+
127040
A-
A+
B+
B-
Va
Vb
+
+
A-
Va voltage = Vb voltage (within 0.25 V)
Va voltage = Vb voltage (greater than 0.25 V)
A+
B+
B-
Va
Vb
+
+
A-
127041
A+
B+
B-
Va
Vb
+
+
A-
A+
B+
B-
Va
Vb
+
+