CTC Union TRM01, Руководство пользователя

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Chapter 2. Installation
12
TRM-01 APR 2000
2.5 Power Supply Modules
The Power Supply Modules in the TRM-01 are available in two
versions, AC or DC. The AC version supports input voltages of 90 to 250 volts
at frequencies of 50 to 60 Hertz. The DC version supports –42 to -54VDC input
voltage. Only one power supply module is required to power a completely full
rack. When two Power Supply Modules are installed, the supplies are hot
swappable, meaning any one supply may be removed and replaced without
impacting the operation of the
TRM-01
Rack.
When an AC Power Module is used in the
TRM-01
, AC power enters
from the IEC mains input connector on the rear panel. AC power is supplied to
the AC Power Module card(s) when the mains toggle switch is closed. The AC
passes through the F1 fuse(s), located on the Power Module card(s). The AC
power is rectified and filtered before being passed to the regulator module. The
regulator module is factory adjusted to provide 48VDC to the back plane with
complete regulation and over-voltage, over-current, and over-temperature
protection.
When a DC Power Module is used in the TRM-01 , DC –48V enters from
the terminal block on the rear panel (see Figure 2-4). DC power is supplied to
the DC Power Module card(s) when the mains toggle switch is closed. The DC
passes through the F1 fuse(s), located on the Power Module card(s). The DC
power passes through the rectifier and filtering circuits, which provide reverse
polarity protection before being passed to the DC-DC regulator module. The
regulator module is factory adjusted to provide 48VDC to the back plane with
complete regulation and over-voltage, over-current, and over-temperature
protection.
Figure 2-4 : DC Model Power Connection
3-pole terminal block
for –48VDC Input
plus Frame Ground
Mains Switch