Motorola ATCA-717 用户手册
Installation
Requirements
40
PENT/ATCA−717
10
Figure 2:
Location of Critical Blade Temperature Spots (Blade Bottom Side)
Power Consumption
The blade
′s power requirements depend on the installed hardware accessories. If you
want to install accessories on the board, the load of the respective accessory has to be
added to that of the blade.In the following table you will find typical examples of power
requirements with and without accessories installed. For information on the accessories’
power requirements, refer to the documentation delivered together with the respective
accessory or consult your local Motorola representative for further details.
added to that of the blade.In the following table you will find typical examples of power
requirements with and without accessories installed. For information on the accessories’
power requirements, refer to the documentation delivered together with the respective
accessory or consult your local Motorola representative for further details.
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The blade must be connected to a TNV−2 or a safety−extra−low−voltage (SELV) circuit. A
TNV−2 circuit is a circuit whose normal operating voltages exceed the limits for a SELV
circuit under normal operating conditions, and which is not subject to overvoltages from
telecommunication networks.
TNV−2 circuit is a circuit whose normal operating voltages exceed the limits for a SELV
circuit under normal operating conditions, and which is not subject to overvoltages from
telecommunication networks.
Table 5:
Power Requirements
Characteristic
Value
Rated Voltage
Exception in the US and Canada
Exception in the US and Canada
−48VDC to −60VDC
−48VDC
−48VDC
Operating Voltage
Exception in the US and Canada
Exception in the US and Canada
−40.5VDC to −72VDC
−40.5VDC to −60VDC
−40.5VDC to −60VDC