Connecting An Additional/Backup Inline Power Supply Source - Avaya P333T-PWR Installation And Configuration Manual

Chapter 6 Powering Up the Avaya P330
2 Insert the AC plug into the AC power supply.
The unit powers up.
3 If you are using a BUPS, insert a power cord from the BUPS into the BUPS
connector in the back of the unit. The unit powers up even if no direct AC
power is applied to the unit. However, in this case, no inline power can be
supplied to the PDs (unless you connect the external DC power supply).
The Avaya P333T-PWR performs a self test procedure (after every power-up or
reset).
4 Connect the external DC power supply (if available).

Connecting an Additional/Backup Inline Power Supply Source

The specification for the external DC power supply for Inline Power is as follows (as
specified in IEEE 802.3af standard):
• Input voltage: 44 to 57 VDC
• Input current: 15 A
• Isolation: 1500V RMS with respect to protective ground
Table 6.1 below shows the configuration options available when using an external
DC power supply.
Table 6.1
Output voltage
50-57 VDC
44-48 VDC
Note: Avaya recommends that you avoid setting the output voltage of the external
power supply in the range of 48 to 50 VDC
28
External Inline DC Power Supply Configurations
Function(s)
• Provides Inline power (up to 405W of
inline power can be supplied into the
P333T-PWR)
• Provides backup power
• Provides backup power
• Inline power from P333T-PWR switch
(internal power supply — 200W)
Avaya P333T-PWR User's Guide