Panasonic KX-TD500, Руководство по установке

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Installation
80 Installation Manual
2.2.5 Ground Wiring
IMPORTANT
Connect the frame of the KX-TD500 system to earth.
1.
Loosen the screw.
2.
Insert a grounding wire (user-supplied)
*
.
3.
Tighten the screw.
4.
Connect the grounding wire to earth.
*
For grounding wire, green-and-yellow insulation is required, and the cross-sectional area of
the conductor must be more than 0.75 mm
2
or 18 AWG.
• Be sure to comply with applicable local regulations (e.g., law, guidelines).
• Proper grounding (connection to earth) is very important to protect the KX-TD500 system
from the bad effects of external noise or to reduce the risk to the user of electrocution in the
case of lightning strike.
• The ground wire of the AC cable has an effect against the external noise and lightning
strikes, but it may not be enough to protect the KX-TD500 system. A permanent connection
between earth and the ground terminal of the KX-TD500 system must be made.
In most of the continental United States, the ground provided by the "Third wire ground" at the
commercial power outlet will be satisfactory. However, in a small percentage of cases this
ground may be installed incorrectly. Therefore, the following test procedure should be
performed.
Test Procedure
1.
Obtain a suitable voltmeter and set it for a possible reading of up to 250 V AC.
2.
Connect the meter probes between the 2 main AC voltage points on the wall outlet.
The reading obtained should be 108 V AC to 132 V AC.
PO
WER
ON 1
FU
SE
OFF
DIGIT
AL SUPER HYBR
ID SYSTEM
RUN
OFF LINE
ALARM
GROUND