Power Module Overview
Feature Name |
Release |
Description |
---|---|---|
60A support on the PSU4.8KW-DC100 (DC100) power supply |
Release 7.3.2 |
This feature allows you to operate the 4.8 KW power supply for 48V 100A DC with 48V 60A. By default, the power module accepts 100A. To change the power mode to 60A, a toggle switch is provided in the power tray. |
You can install an AC or a DC power module in the chassis. Ensure all power connection wiring conforms to the rules and regulations in the National Electrical Code (NEC) as well as local codes.
Each chassis has a power assembly shelf that supports the following number of power trays:
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Cisco 8818 chassis supports up six power trays
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Cisco 8812 and 8808 chassis supports up to three power trays
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Cisco 8804 router contains two power trays
Each power tray supports up to three AC power modules or four DC power modules.
Note |
Use only one kind of power tray and power module in the chassis. |
Note |
Use only the same capacity power module in the chassis. Do not mix different capacity power modules. |
High-Voltage AC / DC Power Supplies
HVAC/HVDC power modules operate in the input range of 180 VAC to 305 VAC (nominal input level of 200 to 240 VAC, 277 VAC) and 192 to 400 VDC (nominal 240 VDC, 380 VDC).
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PSU6.3KW-20A-HV: Each 6.3 KW, 20A power module can supply up to 6.3 KW to the power tray when it’s supplied by two feeds (A and B). It can supply up to 3.15 KW with only one feed.
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PSU6.3KW-HV: Each 6.3 KW, 30A power module can supply up to 6.3 KW to the power tray when it’s supplied by two feeds (A and B). It can supply up to 4.8 KW with only one feed.
DC Power Supplies
There are two types of DC power modules supported on Cisco 8800 router series:
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PWR-4.4KW-DC-V3: The 4.4KW power supply accepts a nominal input voltage of 48V 60A DC, with an operational tolerance range of -40 to -72 VDC.
Each 4.4 KW, 60A power module can supply up to 4.4 KW to the power tray when it’s supplied by two feeds (A and B). It can supply up to 2.2 KW with only one feed.
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PSU4.8KW-DC100: The 4.8KW power supply accepts a nominal input voltage of 48V 100A DC, with an operational tolerance range of -40 to -75 VDC.
The PSU4.8KW-DC100 power module can also be configured to accept voltage of 48V 60A. By default, the power module accepts 100A. To change the power mode to 60A, a power mode switch is provided in the power tray. The power mode switch is located in the left-hand side on the power tray.
Note
The power mode switch must be in the same position for all power trays installed in the chassis, either 60A or 100A mode.
When the power mode switch is configured for 100A mode, each power module can supply up to 4.8 KW to the power tray when it’s supplied by two feeds (A and B). In 100A mode, it can supply up to 3.5 KW with only one feed.
When the power mode switch is configured for 60A mode, each power module can supply up to 4.4 KW to the power tray when it’s supplied by two feeds (A and B). In 60A mode, it can supply up to 2.2 KW with only one feed.
1 |
Power mode switch. |
A plug cover is also provided to block the access to the power mode switch as shown in the below figure:
1 |
Power mode switch cover. |