[c-nsp] 7606 power supply issue

[Edoardo Martelli]

Hello

We recently bought a 7606 with two PWR-1900-AC/6 power supply units.
They are supposed to provide 1900w at 220V, but in fact they only
provide 1000W. We RMAed them, but still the new ones came with the same
problem.

The chassis seems to be ok, because I tried the PWR-1900-AC/6 of another
7606 we have, and they provide 1900W as expected.

Anyone had this problem with recently bought PWR-1900-AC/6?
Maybe there is a switch inside the PSU that has to be changed?

Thank you
Edoardo



New PSUs:

g513-e-rci76-2#sh power
system power redundancy mode = combined
system power total =     1698.90 Watts (40.45 Amps @ 42V)
system power used =      1579.62 Watts (37.61 Amps @ 42V)
system power available =  119.28 Watts ( 2.84 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1    PWR-1900-AC/6      1019.34 24.27  OK     OK     on
2    PWR-1900-AC/6      1019.34 24.27  OK     OK     on


With a PSU from an older box:

g513-e-rci76-2#sh power
system power redundancy mode = combined
system power total =     1869.42 Watts (44.51 Amps @ 42V)
system power used =      1579.62 Watts (37.61 Amps @ 42V)
system power available =  289.80 Watts ( 6.90 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1    PWR-1900-AC/6      1869.42 44.51  OK     OK     on
2    PWR-1900-AC/6      1019.34 24.27  OK     OK     on


NEW PSUs info:

513-e-rci76-2#sh idprom power-supply 1
IDPROM for power-supply #1
  (FRU is 'AC_6 power supply, 1900 watt')
  OEM String = 'Cisco Systems, Inc.'
  Product Number = 'PWR-1900-AC/6'
  Serial Number = 'DCA1021402C'
  Manufacturing Assembly Number = '34-1809-03'
  Manufacturing Assembly Revision = 'A0'
  Hardware Revision = 1.1
  Current supplied (+) or consumed (-) = 24.27A


g513-e-rci76-2#sh idprom power-supply 2
IDPROM for power-supply #2
  (FRU is 'AC_6 power supply, 1900 watt')
  OEM String = 'Cisco Systems, Inc.'
  Product Number = 'PWR-1900-AC/6'
  Serial Number = 'DCA1021401P'
  Manufacturing Assembly Number = '34-1809-03'
  Manufacturing Assembly Revision = 'A0'
  Hardware Revision = 1.1
  Current supplied (+) or consumed (-) = 24.27A