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Requirements for European Operation
312410-A Rev 00
D-9
The creepage distances apply to the normal office environment. When the local
environment within the host chassis is subject to conductive pollution or dry
nonconductive pollution that could become conductive due to condensation, the
creepage distances shown in parentheses in Table D-10
will apply.
The clearance and creepage distance between adjacent points should be checked
as follows:
• The clearance distance (X) is the shortest distance measured between two
points through the air.
• The creepage distance (Y) is the shortest distance between two points
measured across a surface.
You should obtain advice from a competent telecommunications safety engineer if
in doubt. Failure to install the ISDN BRI according to these instructions will
invalidate the General Approval.
ISDN BRI Upgrade Module Safety Status
Table D-11 lists the safety status of interconnection points to the connection of
other equipment.
Table D-10. ISDN BRI Clearances and Creepage Distances
Clearance (X) Creepage (Y)
Voltage used or generated by other parts
of the host or expansion card
2.0 mm 2.4 (3.8) mm Up to 50 V rms or V dc
2.6 mm 3.0 (4.8) mm Up to 125 V rms or V dc
4.0 mm 5.0 (8.0) mm Up to 250 V rms or V dc
4.0 mm 6.4 (10.0) mm Up to 300 V rms or V dc
Table D-11. ISDN BRI Safety Status (Order Nos. 24000, 24000-S, 50022,
AE0004006, AE0011013, and AE0011019)
Port Location Port Description Type of Circuit
ISDN BRI ISDN TNV at SELV levels
P6 Host Port SELV