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x 119500-A Rev. A
Module Installation Warning
The power required by the host and the total of adaptor cards installed within the host
environment, together with any auxiliary apparatus, shall not exceed the power
specifications of the host apparatus.
It is essential that when other option cards are introduced which use or generate a
hazardous voltage, the minimum creepages and clearances specified in Table 1
are
maintained. Suitable user protection to ensure compliance with EN 60950 should be
present on the card. A hazardous voltage is one which exceeds 42.4 V peak AC or 60 V
DC. If you have any doubt, seek advice from a competent engineer before installing other
adaptors into the host equipment.
The equipment must be installed such that, with the exception of the connections to the
host, clearance and creepage distances shown in Table 1
are maintained between the card
and any other assemblies which use or generate a voltage shown in the table below. The
larger distance shown in parentheses applies where the local environment within the host is
subject to conductive pollution or dry non-conductive pollution which could become
conductive due to condesation. Failure to maintain these minimum distances would
invalidate the approval.
Table 1. Creepage and Clearances
Clearance (mm) Creepage (mm)
Voltage used or
generated by Host or
other cards.
2.0 2.4 (3.8) Up to 50 V rms or V dc
2.6 3.0 (4.8) Up to 125 V rms or V dc
4.0 5.0 (8.0) Up to 250 V rms or V dc
4.0 6.4 (10.0) Up to 300 V rms or V dc
For a host or other expansion card
fitted in the host, using or generating
voltages greater than 300 V (rms or
dc), advice from a competent
telecommunications safety
engineer must be obtained before
the installation of the relevant
equipment.
Above 300 V rms or V dc