Esse-ti ST 300V, Руководство пользователя

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W
ARNINGS
The main causes of interference on telephone lines and power supply mains
(that may result in malfunctioning or damages to the product) are:
•
accidental contacts with lines with higher voltage (short circuit)
•
electromagnetic association with other conductors located nearby
•
sudden load variations, especially for power supply lines (electric motors,
etc.)
•
temporary interference caused by weather conditions (lightening)
Protections for telephones lines must be inserted not only on external, but also
on extension lines outside the building or lines connected to devices that are
powered from the mains (i.e. fax, modem, answering machine, cordless
telephone, etc.).
The protection for power supply lines must be connected to the input of the
product power line.
The earth terminal of the protections must be connected to a working earth
system to ensure the correct operation of the devices.
28 GENERAL INSTRUCTIONS FOR THE INSTALLER