Meridian America 21 Manuale Utente
15
Power and cooling equipment
A0367754 Top Cap Fan
System Hardware-System option 21A
Purpose-The A0367754 Top Cap Fan is located in the Fan and Sensor
Panel. It provides cooling for the
Panel. It provides cooling for the
power Supply AC.
There is no speed or temperature control provided with it. Power. to the Top
Cap Fan is controlled by the circuit breaker located on the back panel of the
pedestal.
Cap Fan is controlled by the circuit breaker located on the back panel of the
pedestal.
Quantity-One per system
Switched Mode Rectifier
System Hardware-System option 71 (DC version)
Purpose-Solid state, switched-mode rectifier. Converts
VAC
(nominal) to -48 VDC (nominal), with a
output. Used in the QCA13
power plant, with up to ten rectifiers in parallel.
Quantity-As required by system power consumption
Peripheral Equipment Power Supply DC
System Hardware-All
Purpose-The Peripheral Equipment Power Supply DC is used to provide
power to all peripheral equipment modules in DC systems. It converts -48V
DC to
power to all peripheral equipment modules in DC systems. It converts -48V
DC to
and
DC voltages used to power
peripheral equipment logic cards and to supply talk battery to lines and
trunks. This power supply is located in the far left hand card slot labeled
“PE Pwr Sup”.
“PE Pwr Sup”.
Equipment identification and ordering information
553-3001-154