Hardware Installation and Reference Guide Preparing for Installation
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mA rated action current supports no more than eight power supplies. In this case, the 16 power supplies in the system require at
least two leakage protectors with 30 mA rated action current and each leakage protector supports eight power supplies. If power
supplies in a system differ in models, the rated leakage action current of each leakage protector divided by two is greater than
the sum of maximum leakage currents of all the power supplies. The rated leakage non-action current of a leakage protector shall
be 50% of the leakage action current. Take a leakage protector with 30 mA rated leakage action current as an example. The rated
leakage non-action current shall be 15 mA. When the leakage current is below 15 mA, the protector shall not act. Otherwise,
misoperation may easily occur due to high sensitivity and thus the leakage protector trips, devices are powered off, and services
are interrupted.
To guarantee personal safety, the rated leakage action current of each leakage protector in the system must be equal to or less
than 30 mA (human body safety current is 30 mA). When twice of the total leakage current of the system is greater than 30 mA,
the system must be equipped with two or more leakage protectors.
For the leakage current value of each power supply model, see the power supply model specifications in Chapter 1.
2.1.4 Electrostatic Discharge Safety
To prevent damage from static electricity, you must pay attention to the following:
Properly ground the device and floor.
Keep the indoor installation environment clean and free of dust.
Maintain appropriate humidity conditions.
2.1.5 Laser Safety
Among the modules supported by the switch, there are many transceiver modules that are Class I laser products.
When a fiber transceiver works, ensure that the port has been connected with a fiber or covered by a dust cap to keep out dust
and prevent it from burning your eyes.
Do not stare at any fiber port.
2.2 Installation Environment Requirements
Install the switch indoors to ensure its normal operation and prolonged service life. The installation site must meet the following
requirements.
2.2.1 Ventilation Requirements
Maintain a minimum clearance of 100 mm (3.94 in.) around the device for air circulation. After various cables are connected, bundle
the cables or place them in the cable management bracket to avoid blocking air inlets.
2.2.2 Temperature/Humidity Requirements
To ensure the normal operation and prolonged service life of the switch, maintain an appropriate temperature and humidity in the
equipment room. The equipment room with too high or too low temperature and humidity for a long period may damage the switch.
In an environment with high relative humidity, the insulating material may have poor insulation or even leak electricity.
In an environment with low relative humidity, static electricity is prone to occur and damage the internal circuits of the switch.
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