Cabling the Power Filter Units


Cabling the Power Filter Units
 
This chapter provides information and instructions for applying the power feed and return cables to the Power Filter Units (PFUs) and the chassis.
Power Considerations
Each chassis supports up to two 165 amp PFUs.
The following table describes the power requirements for the chassis.
Chassis Power Requirements
Maximum range: -40VDC to -60VDC
Nominal range: -48VDC to -60 VDC
SPIO: 15W
RCC: 20W
QGLC: 16W
XGLC: 30W
SMC: 180W
PSC: 250W
PSC2: 325W
PPC: 325W
Estimating Power Requirements
Use the following formula to estimate the total power consumption for each deployed chassis:
(Total Application Card Max Power Load) + (Total Line Card Max Power Load) + (Chassis Max Power Load)
Example
The calculation for estimating the power required for an ASR 5000 installation with 3 PSCs, 2 SMCs, 2 SPIOs, 2 RCCs, and 4 Ethernet 1000 line cards is as follows:
(250W x 3) + (180W x 2) + ((15W x 2) + (20W x 2) + (13.5W x 4)) + 800W = 2034W
Power Cable Requirements
You can install up to three chassis in an equipment rack or telecommunications cabinet. It is recommended that you run the power cabling to the rack or cabinet and then to each of the chassis through a fuse panel installed in the rack. Due to the required bending radius at each of the system’s PFUs, distributing power through a fuse panel allows you to use a smaller, more flexible cable for each chassis.
The following table identifies the recommended cable gauges you should used.
Recommended Cable Gage Information
 
ASR 5000 PFU Wiring Diagram
ASR 5000 PFU Wiring Diagram Descriptions
Warning: The plastic terminal cover must be installed over power and return lugs at all times. Die angeschlossenen Kabelschuhe muessen mit der Plastikabdeckung gesichert sein.
 
Power Lug Details
 
Connecting the PFU to the Power Source
Follow the instructions in this section to connect your system’s 165A PFU(s) to the power supply.
Each of the four power terminals is shipped with nuts and washers. The 165A PFU has one lock-washer and one flat washer.
Warning: To avoid electric shock, ensure that the power source is off before attaching power cables to the PFU(s) installed in the chassis. Spannungsversorgung abschalten vor Anschluss der Kabel an die Netzteile, um einen elektrischen Schlag zu vermeiden.
Step 1
Step a
Step b
Step 2
Step 3
Step 4
Step a
Step b
Step 5
Step a
Step b
Warning: To avoid the risk of fire, take proper precautions to ensure that the power feed and return lugs are not touching. Um einen Kurzschluss zu vermeiden, duerfen sich die beiden Stromkabel nicht beruehren. Kabelschuhe duerfen sich nicht beruehren und muessen unbedingt auseinander gehalten werden.
Step 6
Caution: To avoid the risk of electric shock and/or potential damage to the system, never operate the chassis without the plastic terminal cover. In addition, make sure the power and return lugs do not protrude past the edge of the plastic terminal covers. Any portion of the lug that is exposed must be covered with shrink wrap.
Step 7
Repeat step 1 through step 6 for the PFU installed in the bay labeled Power Filter Unit 2.
Step 8
 
 

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