ZyXEL Communications XGS-4526 User Manual

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 Chapter 3 Hardware Overview
XGS-4526/4528F/4728F User’s Guide
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3.2.5  Power Connector
Make sure you are using the correct power source as shown on the panel and that 
no objects obstruct the airflow of the fans. 
Use the following procedures to connect the Switch to a power source after you 
have installed it. 
Note: Check the power supply requirements in 
, and make 
sure you are using an appropriate power source.
Keep the power supply switch and the Switch’s power switch in 
the OFF position until you come to the procedure for turning on 
the power. 
Use only power wires of the required diameter for connecting the Switch to a 
power supply.
3.2.5.1  AC Power Connection
Note: This is only for the AC model of the Switch.
Connect the female end of the power cord to the power socket of your Switch. 
Connect the other end of the cord to a power outlet. 
3.2.5.2  DC Power Connection
Note: This is only for the DC model of the Switch.
The Switch uses a single ETB series terminal block plug with four pins which allows 
you to connect up to two separate power supplies. If one power supply fails the 
system can operate on the remaining power supply. Use two wires to connect to a 
single terminal pair, one wire for the positive terminal and one wire for the 
negative terminal.
Note: The current rating of the power wires must be greater than 20 Amps. The power 
supply to which the Switch connects must have a built-in circuit breaker or 
switch to toggle the power.
Note: When installing the power wire, push it wire firmly into the terminal as deep as 
possible and make sure that no exposed (bare) wire can be seen or touched.
Exposed power wire is dangerous. Use extreme care when 
connecting a DC power source to the device.
To connect a power supply: