Norstar DR5, Installer'S Manual

Page: 35 / 534

Check the location where the system modules, the
telephones, and auxiliary equipment are to be installed. This
includes making sure sufficient space is available to install the
components.
Location requirements
Clean, dry, and well-ventilated
Temperature: to 50°C (32°F to 122°F)
Humidity: 5% to non-condensing
Location: at least 4 m (13.1 ft) from equipment such as
photocopiers, electrical motors, and other equipment that can
produce electromagnetic, radio frequency, and electrostatic
interference.
Electrical requirements
Non-switched outlet
ac outlet located not more than 1.5 m (4.9 ft) from the Key
Service Unit (KSU). The actual distance from the KSU to the
Power Bar may vary with additional Trunk and Station
Modules. Do not use an extension cord between the KSU
and the power bar.
For the 110 V system
Dedicated 110-V ac nominal, 15-A minimum
service with third wire ground.
the 220 V system
Dedicated to 240-V ac nominal,
10-A minimum service with third wire ground.
WARNING
The ac outlet must be equipped with a third wire ground
to avoid electromagnetic interference.
Modular Guide