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IPD1-A2-GZ40-00 February 2005 21
5. The positive terminal of the 48 VDC source is to be reliably connected to
earth. Connect a green/yellow earthing (grounding) wire to the protective
earthing (grounding) lug connector, identified by the protective earth symbol
on the chassis.
6. A readily accessible disconnect device as part of the building installation shall
be incorporated in fixed wiring. The disconnect device (a 48 VDC, 20A, single
pole circuit breaker or switch) must be included in the ungrounded supply
conductor. Over current protection must be included with a 20A, 48 VDC fuse
or circuit breaker in the ungrounded conductor. Use minimum 18 AWG fixed
power source wires with strain retention.
7. Do not allow anything to rest on the power cord and do not locate the product
where persons will walk on the power cord.
8. Slots and openings in the cabinet are provided for ventilation. To ensure
reliable operation of the product and to protect it from overheating, these slots
and openings must not be blocked or covered.
9. General purpose cables are described for use with this product. Special
cables, which may be required by the regulatory inspection authority for the
installation site, are the responsibility of the customer. To reduce the risk of
fire, use a UL Listed or CSA Certified, minimum No. 26 AWG (0.128 mm2)
telecommunication cable, or comparable cables certified for use in the country
of installation.
10. A rare phenomenon can create a voltage potential between the earth grounds
of two or more buildings. If products installed in separate buildings are
interconnected, the voltage potential may cause a hazardous condition.
Consult a qualified electrical consultant to determine whether or not this
phenomenon exists and, if necessary, implement corrective action prior to
interconnecting the products.
11. In addition, if the equipment is to be used with telecommunications circuits,
take the following precautions:
— Never install telephone wiring during a lightning storm.
— Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
— Never touch uninsulated telephone wires or terminals unless the
telephone line has been disconnected at the network interface.
— Use caution when installing or modifying telephone lines.
— Avoid using a telephone (other than a cordless type) during an electrical
storm. There may be a remote risk of electric shock from lightning.
— Do not use the telephone to report a gas leak in the vicinity of the leak.
12. The equipment is intended for installation in a max. 65° C ambient
temperature, in an environment that is free of dust and dirt.
13. When installed in the final configuration, the product must comply with the
applicable Safety Standards and regulatory requirements of the country in
which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.