S5750E Series Installation Guide Chapter 2 Device Installation
2-4
Caution!
Please verify the sign above the port to ensure using the other ports. Connecting to wrong
ports might damage the transceiver or the other ports. When connecting other devices
through a fiber cable to the switch, the output power of the fiber cable must not exceed the
maximum received power of the corresponding modules. Otherwise, it will damage the
fiber transceiver. Do not stare at the fiber bore when the switch is in operation. That may
hurt your eyes.
2.3.5 Power Supply Connection
Switch uses 220V AC or -52~-57V;18A DC DC power. Please read the power input
specification for the detailed information.
Power supply connection procedure is described as below:
1. Insert one end of the power cable provided in the accessory kit into the power source
socket (with overload and leakage protection), and the other end to the power socket in
the back panel of the switch.
2. Check the power status indicator in the front panel of the switch. The corresponding
power indicator should light. Switch is self-adjustable for the input voltage. As soon as the
input voltage is in the range printed on the switch surface, the switch can operate
correctly.
3. When the switch is powered on, it executes self-test procedure and startups.
Caution!
The input voltage must be within the required range, otherwise the switch can be
damaged or malfunction. Do not open the switch shell without permission. It can cause
physical injury.
2.3.6 Ground Cable Connection
Grounding: The chassis of the equipment must be grounded properly so that the
lightning can flow to the ground, which improves the capability of the chassis for resisting
the electromagnetic interference.
1. Ensure that the grounding cable is connected correctly so that the equipment is
protected against lightning and interference. The correct connection of the grounding
cable is an important measure to ensure the human safety.
2. Connect the chassis to the ground by using a grounding cable. The grounding
resistance must be smaller than 0.10 ohms and the gauge of the grounding cable must be
greater than 10 AWG and the length is 50 cm.
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