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16
Power Supply Description
2.3
Features
This section describes the main features of the T809-10 power supply.
These include:
• Universal AC input capability.
• Built-in active Power Factor Correction (PFC).
• Remote control (ON/OFF).
• Remote sense.
• Circuit protection features.
• Output Voltage Adjust.
2.3.1
Input Voltage Range
The T809-10 power supply has universal AC input range capability. It is designed to
operate for an input voltage range of 100 to 240V
the power supply may operate improperly and/or lose the PFC function.
Note:
When operated at low AC input voltages, the power supply is less efficient
and produces more heat. Output derating may apply in this situation – refer
to Derating Curves in Section 3.9 (Power Supply Cooling and Derating).
2.3.2
Protection
The PSU module has inrush current limiting, and over-temperature, over-current and
over-voltage protection. For detailed specifications, refer to Section 1.2.
2.3.2.1
Inrush Current
A thermistor and relay are used within the PSU module for protection from inrush cur-
rent.
Caution:
After turning the power supply OFF, a 10-second cool-down period is rec-
ommended before turning it on again. Inrush current will be a lot higher
than the specified value if the input thermistor is not allowed sufficient time
too cool down.
2.3.2.2
Over-voltage
An over-voltage of 18 to 21V
ule to shut down. To reset the module, turn OFF the mains switch and wait 30 seconds
before switching it ON again.
November 2004
applied to the power supply output will cause the mod-
DC
. If used at any other input voltage
AC
Copyright © 2004 Tait Electronics Ltd
MBZ-00001-01
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