Karel DS200, Техническое справочное и монтажное руководство

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DS Series PBX Technical Reference And Installation Guide
117
If use of a copper plate is the case, the plate should be buried as deep as possible.
Quality of the outcome of the grounding work depends on how pure and humid the soil is.
NOTE: Rocky ground or ground that has been dug and filled should not be preferred for
grounding.
The cable coming from the grounding installation must be connected to the ground
connection point of the exchange. The cable to be used should be one piece and its length
should be determined with regards to the distance it should extend through. Besides, it would
be wise to employ a flexible, multi-core cable, in order to ensure that it remains intact at the
sharp bending points. For instance, a multi-core cable with 16 mm
2
cross-section would be
an appropriate choice.
If there is more than one rack in the exchange, then the ground connection points of the two
racks must be tied to each other tightly with the ground connection cable that is supplied
within the shipped hardware of the auxiliary racks.
Likewise, if there are other devices integrated to the exchange (for instance: computers,
HDSL modems, SDH converters, routers, etc.) those devices must definitely be ensured to
share a common ground with the exchange. Otherwise, unfavorable results regarding
operation of the exchange might occur.
*
GROUND CONNECTIONS OF THE SIDE COVERS OF THE EXCHANGE
MUST DEFINITELY BE MADE AGAIN, IF THE COVERS ARE REMOVED AND
REPLACED.