Hardware Installation and Reference Guide Preparing for Installation
14
⚫ If a power supply system is equipped with a leakage protector (also referred to as “leakage current switch”
or “leakage current breaker”), the power supply will be cut off automatically when the electric leakage or
electric shock occurs. The selected leakage protector should comply with the following rule:
○ The rated leakage action current of each leakage protector is greater than twice of the theoretical
maximum leakage current of all the power supplies in the system.
For example, if a system is equipped with 16 identical power supplies, the leakage current of each power
supply is equal to or less than 3.5 mA, and the leakage current of the system totals 56 mA. A leakage protector
with 30 mA rated action current supports less than five power supplies (that is, Action current of the leakage
protector/2/Maximum leakage current of each power supply = 30/2/3 .5 ≈ 4.28). In other words, the leakage
protector with 30 mA rated action current supports no more than four power supplies. In this case, the 16
power supplies in the system require at least four leakage protectors with 30 mA rated action current and
each leakage protector supports four 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.
Otherwise, misoperation may easily occur due to high sensitivity and thus the leakage protector trips,
devices are powered off, and services are interrupted.
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.
Caution
● 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
⚫ Properly ground the device and floor.
⚫ Keep the indoor installation environment clean and free of dust.
⚫ Maintain appropriate humidity conditions.
2.2 Installation Environment Requirements
Install the device indoors to ensure its normal operation and prolonged service life.
The installation site must meet the following requirements.
2.2.1 Bearing Requirements
Evaluate the weight of the switch and its accessories (for example, the cabinet, chassis, and power supply
modules), and ensure that the ground of the installation site meets the requirements.
If the RG-EG310GH-E router is installed inside a cabinet, the following conditions must be met:
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