Installation
2-35
2.4.3
Lightning Protector Installation
A lightning protector is a device to be installed on a CO line to
prevent a dangerous surge from entering the building and damaging
equipment.
A dangerous surge can occur if a telephone line comes in contact
with a power line. Troubles due to lightning surges have been
showing a steady increase with the development of electronic
equipment.
In many countries, there are regulations requiring the installation of
a lightning protector. A lightning strike to a telephone cable which
is 10 m above ground can be as high as 200,000 volts.
This system should be installed with lightning protectors. In
addition, connection to earth ground is very important for the
protection of the system.
EXTN
CO
Frame
Earth
CO
CO
Lightning
Protectors
Main
Distribution
Frame
Main Unit
Earth Terminal
SLT
PT
Installation Diagram
EXTN
EXTN
Earth
Содержание KX-TD816AL
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Страница 219: ...Section 4 System Programming This section provides step by step programming instructions for a proprietary telephone ...
Страница 364: ...Section 5 List This section lists tone ring tone and default values of system programming ...
Страница 371: ...Section 6 Troubleshooting This section provides information for system and telephone troubleshooting ...
Страница 377: ...Matsushita Electric Industrial Co Ltd Central P O Box 288 Osaka 530 91 Japan Printed in Japan PQQX11289XA S1294MT3108CK ...