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P300H P300 Series Modem Installation and Operating Handbook Page 8
Environmental
The equipment is designed to operate in a static 19 inch rack system conforming to IEC 297-2. Operation
of the equipment in transportable installations and vehicles equipped with the means of providing a stable
environment is permissible. Operation of the equipment on vehicles, ships or aircraft without means of
environmental conditioning may invalidate the safety compliancy. Please contact the factory for further
advice. Operation of the equipment in an environment other than that stated in the specifications will also
invalidate the safety compliancy.
The equipment must not be operated in an environment in which the unit is exposed to:
* Un-pressurised altitudes greater than 2000 metres
* Extremes of temperature outside the stated operating range
* Excessive dust
* Moisture or humid atmospheres above 95% RH
* Excessive vibration
* Flammable gases
* Corrosive or explosive atmospheres
Installation
The equipment is classified in EN 60950 as a pluggable equipment class A for connection to the mains
supply. As such it is provided with a mains inlet cord suitable for use in the country of operation. In normal
circumstances this will be of an adequate length for installation in the rack. If the mains cable proves to be
too short then any replacement must have a similar type fuse (if fitted) and be manufactured to a similar
specification. For example, look for HAR, BASEC or HOXXX-X ratings on the cable and the connector ends
marked with BS1636A (UK free plug 13 amp); BSI, VDE, NF-USE, UL, CSA, OVE, CEBEC, NEMKO,
DEMKO, SETI, IMQ, SEV and KEMA-KEUR for the IEC 6 amp free socket. Schuko and North American
free plugs must have similar markings.
The installation of the equipment and the connection to the mains supply must be made in compliance to
local or national wiring regulations for a category II impulse over-voltage installation. The positioning of the
equipment must be such that the mains supply socket outlet for the equipment should be near the
equipment and easily accessible or that there should be another suitable means of disconnection from the
mains supply.
The equipment is designed to operate from a TN type power supply system as specified in EN 60950. This
means a system that has separate earth, line and neutral conductors. The equipment is not designed to
operate with an IT power system which has no direct connection to earth.
CAUTION: This unit has DOUBLE POLE / NEUTRAL FUSING.