General Description
Access Power Rectifiers
Two types of
•APU48 – 48 V, 720 W, (120 - 240 V AC)
•APR48 – 48 V, 1500 W, (208 - 240 V AC)
There are three status indicator LEDs on the Access Power Rectifier front panel (Power On, Urgent Alarm and
Details about replacing a rectifier can be found in Chapter 7.
"Power On LED (Green) – indicates that the rectifier is powered.
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•Rectifier in power/current limit mode
(This normally happens for a short period of time when the batteries are recharging.)
•Rectifier operating in temperature turndown mode, because of high ambient temperature or low AC supply voltage
$Urgent Alarm LED (Red) – indicates critical fault conditions, that require urgent attention, such as:
•Rectifier failed
•Rectifier shut down
•AC supply failed (green LED off)
•Very high AC supply voltage
•DC overvoltage
%Retaining Screw (loosen to remove rectifier)
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