Marconi LORAIN RHM800E50 Manual page 43

In addition to the customer adjustable selective high voltage shutdown circuit described in the instruction
manual, this FLOTROL Rectifier also contains a second non- adjustable high voltage shutdown circuit. This second
high voltage shutdown circuit is designed to shutdown the rectifier in the event of a failure which inhibits the
customer adjustable selective high voltage shutdown circuit. This circuit assures that rectiiier output voltage will not
increase to a level that could cause damage to the rectifier or the load. The circuit is proportioned so that the non-
adjustable high voltage shutdown point always remains 2 volts above the adjustable setting for 50 volt rectifiers and
1 volt above the adjustable setting for 25 volt rectifiers.
The non-adjustable high voltage shutdown point is determined by resistor R88 ( aption) on the regulator and
alarm printed circuit card. If resistor R88 is removed, the non-adjustable high voltage shutdown circuit is removed
and the selective high voltage shutdown feature of the rectifier is inhibited.
In Canada :
122 Edward St. /St. Thomas, Ontario N5P lZ2 / (519) 631.0780
In Mexico :
ADDENDUM
Section 4237
RELTEC"