Redundans tap, tulfesz

[Muranyi Istvan]

Hello!

Van itt nemi anyag a profiktol, elindulni, okoskodni biztosan jo.

Operating Modes of the Power Supplies

The AC-input and DC-input power supplies operate in either of two modes:
•Standalone mode—In this configuration, only one power supply is installed 
in one of the two available power supply bays. To remove or replace a 
single power supply, you must first power down the system.
•Redundant (1+1) mode—In this configuration, two power supplies are 
installed in the power supply bays, sharing the load current to provide 
required DC operating voltages to the backplane. If one of the units 
fails, the surviving power supply takes over to maintain normal system 
operations.

The online insertion and removal (OIR) capability of the system enables you 
to add or remove a redundant power supply without introducing noise in the 
DC operating voltages being supplied to the backplane.
Features of the Power Supplies

The AC-input and DC-input power supplies incorporate the following 
features:
•Onboard maintenance bus module—The module on the power supply is a 
microprocessor-based subassembly that links the power supply to the 
system's environmental monitoring system.

The environmental monitoring system includes identical modules on all of 
the circuit boards, including the RP. This system enables you to perform 
system functions and to respond to alarm conditions (such as 
overtemperature or overvoltage conditions).

•Blind mating connector at the back of the unit—Supplies DC operating 
voltages to the backplane for distribution to the system's electronic and 
electrical components.

•OIR capability—Enables a second AC-input power supply to be installed in 
or removed from the system without disrupting normal system operations.
•Temperature sensor—Measures the ambient air temperature of the power 
supply.
•Power factor corrector (PFC)—Applicable only to the AC-input power supply, 
the PFC enables the power supply to accept source AC voltages with the 
following characteristics: voltages ranging from 180 to 264 VAC, single 
phase, 47 to 63 Hz. 

All power supplies are load-sharing and hot-swappable.

The power modules monitored through a board, are divided into two load 
zones for power. There are two AC power supply configurations, one with 
three power supply modules, the other with four power supply modules. When 
using a DC power supply system, there are four DC power supply modules 
(A1, A2, B1, B2).

To completely power the system, you need to power both load zones. The 
second load zone covers the switch fabric card cage, the lower card cage, 
and the lower blower module, while the first load zone covers the top card 
cage and the top blower module. In an AC system, this is done by 
connecting any two power modules to a source. For the DC system, A1 and B1 
power the upper load zone while A2 and B2 power the lower load zone. To 
fully power with DC power supplies, the minimum that must be connected is 
A1&A2, B1&B2, A1&B2, or A2&B1.

Udv. Muranyi Istvan



2004. július 28. 00.57 dátummal Móczik Gábor ezt írta:
> Moczik Gabor wrote:
> > Mit jelent a Redundans tap?
> > Pl. van ket tap egy gepben, es annyi az egesz, hogy ha valamelyiken
> > megszunik vagy megszalad valamilyen tapfesz, akkor atkapcsol a
> > masikra?