CHAPTER B: DC POWER INPUT

DC POWER INPUT

B.2 -48 V DC, 24 V DC and 125 V DC Power, Theory of Operation

The -48VDC, 24VDC and 125VDC power options are designed using diodes inside on each DC power input line behind the two external power connection terminals, so that the power from an external source can only flow into the hub. This allows the Switch to operate only whenever DC power is correctly applied to the two inputs. It protects the Switch from incorrect DC input connections. An incorrect polarity connection, for example, will neither affect the Switch, its internal power supply, nor will it blow the fuse in the internal power supply.

MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL

B–3

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GE ML1200 instruction manual V DC, 24 V DC and 125 V DC Power, Theory of Operation