Specifications

9
POWERCASSETTE FRONT-END
OPERATING MANUAL
FEATURE / OPTION
DESCRIPTION
The hot-swap connectors used in both the PowerCassette and
rack are specifically designed for hot-swap applications. They
have staged pin engagement for safety and optimum operation.
The ground (common) and AC pins make first contact and the
enable pin makes last contact, turning the unit on (provided it is
not “inhibited”).
Hot-swap operation means that a PowerCassette can be
removed and replaced while the rack is powering the load. If the
rack is operated in a redundant mode, hot-swap replacement
will not affect the output voltage.
Output current limiting protects the output of the PowerCassette
from damage due to an overload or short circuit condition. This
protection is continuous, without damage, and recovery is
automatic when the overload is removed. Current limiting
begins at about 105% of rated output current.
The AC Power Fail indicator is a green LED, showing that input
power is present. The DC Power Good indicator is a green LED
showing that the output voltage is present and within operating
range.
For detailed descriptions of Enable/Inhibit, Current Share,
Remote Sense, Input Power Fail and Output Power Good
signals, see Section 15, Description of Control and Supervisory
Signals.
The Option E version of the PowerCassette front end has an
IEC60320 AC front input connector with a switch, and two fans.
See Figure 3. Output power is reduced as shown in the model
table.
Hot-Swap Connectors
Hot-Swap Operation
Output Protection
LED Indicators
Control and Monitoring
Signals
IEC AC Input
(Option E)
10.0 MECHANICAL SPECIFICATIONS
The mechanical dimensions of the PowerCassette are shown in Figure 4. Please
note the maximum torque on the threaded inserts.
11.0 SAFETY AND INDUSTRY STANDARDS
11.1 The PowerCassette meets the following safety certifications:
STANDARD AGENCY
UL1950 UL
CSA22.2 No.950 CUL
EN60950 DEMKO