
H3C AR 46 Series Routers Installation Manual
Chapter 1 Router Overview
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IV. Encryption daughter card
Same as the ERPU, the ERPU(H) supports the encryption daughter card. For its
specifications, refer back to section 1.4.2 IV. “Encryption daughter card”.
1.4.4 PSU
I. Functions
The power supply system of the H3C AR 46 series can work in either single-power or
dual-power mode. In dual-power mode, the two PSUs (DC-input or AC-input) function
in redundancy or load sharing mode. That means, when a PSU fails or its power supply
is disconnected, another PSU can still work and supply all the power required by the
system.
Both AC-input PSU and DC-input PSU are available with the H3C AR 46 series. The
PSUs supply 350W power and provide overcurrent and overvoltage protection.
You can connect a PSU to the backplane by inserting it from the rear of the router
chassis. It is hot swappable and its switchover does not affect the ongoing system
operation.
Note:
When installing your router in a communications equipment room, ensure that the AC
power distribution cabinet can provide a lightning protection box or arrester against the
current of 20 KA and above.
II. Appearance
Figure 1-13
AC-input PSU