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Installation and Maintenance
Volume
Octel Overture 200/300 Serenade 3.0
PB60014–01
IMPORTANT
SAFETY INSTRUCTIONS FOR A.C. POWERED SYSTEMS
SA
VE THESE INSTRUCTIONS
To
conform to the safety agency grounding requirements, use the power cord provided. This
power cord complies with the following UL requirement:
“An equipment grounding conductor that is not smaller in size than the ungrounded
branch-circuit supply conductors, is to be installed as part of the circuit that supplies the product
or system. Bare, covered or insulated grounding conductors are acceptable. Individually covered
or insulated equipment grounding conductors shall have a continuous outer finish that is either
green, or green with one or more yellow stripes. The equipment grounding conductor is to be
connected to ground at the service equipment.”
V
erify that the wall power outlet conforms to the following UL requirement:
“The attachment-plug receptacles in the vicinity of the product or system are all to be of a
grounding type, and the equipment grounding conductors serving these receptacles are to be
connected to earth ground at the service equipment.”
Refer to T
able 4-1 for the input-circuit current capacity that is to be supplied for a dedicated circuit.
Use the following guidelines for calculating the input power requirements of an
Octel Overture 200/300.
If the Octel Overture 200/300 is powered by an a.c. uninterruptible power supply (UPS) or a –48
Vdc
source, the input power requirement should be calculated to ensure that the correct-capacity power source
is chosen. The power requirements depend on the message server
’
s configuration, because a fully
populated cabinet requires more power than a minimally configured cabinet. The size of the a.c. UPS or
d.c. source must be chosen to match the maximum size configuration expected for each installation.
1.
Calculate the exact message-server configuration, including all known growth plans.
2.
Determine the total power consumption (in watts) of the configuration, using the values in T
able 4-2.
3.
If the message server is to be powered by an a.c. UPS, multiply the total power consumption figure
by 1.5 to determine its volt-ampere requirements.
4.
The total power consumption and volt-ampere requirements should be rounded up to the next
multiple of 50, before being used to choose an a.c. UPS or –48 Vdc source.