Table 2-1. Rear Panel Connectors
2.8 AC input power connection
The Asterion DC Series power source is designed to operate from 1-phase or 3-phase
input power, having 2 wire/3-wire plus ground, with nominal AC input voltage (line-line
or line-neutral) of 100/115/230/240 VAC, and 50/60/400 Hz input frequency. The AC
input voltage range is automatically selected by the unit at power-up; no user setup is
required. Power factor correction (PFC) provides high power factor, minimizing the
required input apparent power and current harmonic distortion. Refer to the
specifications of Section 1.2 for AC input current requirements, and derating of output
power as a function of AC input voltage.
2.8.1 AC input overcurrent protection
The Asterion DC Series power source has fuses at the AC input for fault protection.
These fuses are internal to the chassis and are not user accessible. They provide fault
isolation in case a failure occurs of internal components or wiring. A suitable
overcurrent protection device must be provided externally, within the system
installation, to protect the external wiring and interconnects.
2.8.2 AC Input Safety Disconnect Device
The Asterion DC Series power source front panel POWER switch does not disconnect
the AC input line from the unit. Ensure that an appropriately rated safety disconnect
device is incorporated in the installation that will provide isolation from the AC input
when the device is opened. The device could be a switch or circuit breaker, and must
be located close to the unit, within reach of the operator, and clearly labeled as the
disconnection device.
2.8.3 AC Input Connector
The AC input connector, AC INPUT, is located on the rear panel, along with the safety-
ground stud. Figure 2-5 shows the rear panel view of the connector and stud. Table
2-2 shows the functions and connector pinout, and Table 2-3 lists the connector type.
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