Lucent Technologies Lineage
®
2000 25A Ferroresonant Rectifier J85502A-1
2 - 4 Product Description
Issue 4 May 1998
provides an isolated 2- to 10-volt signal, corresponding to a
range of no-load to 125 percent of rated output load, which
is used to indicate the rectifier drain on the controller.
•
Safety interlocks: A series-loop circuit electrically
interconnects the control circuit modules and prevents
rectifier operation if an open circuit occurs.
•
Fuse alarm circuit: The low-power control functions shut
the rectifier down if a fuse alarm (FA) occurs. One fuse
alarm protects each of the regulation leads. When any FA
occurs, a Rectifier Failure Alarm (RFA) LED lights on the
front panel and an RFA signal is generated.
•
Man alarm: This alarm indicates that either the rectifier
has been turned off manually or has lost commercial input
power.
•
Restart circuit: The rectifier has an automatic restart
feature that is compatible with the Lineage
®
2000
controllers and most other controllers. If a rectifier shuts
down due to the external selective HVSD, most controllers
try at least once to restart it automatically.
•
Remote sense leads: These leads permit remote regulation
of the rectifier if it is installed with a compatible controller
and the straps on the CM1 option board are set for List WA.
See Table 8-B in this manual.
•
TR: This signal remotely shuts down the rectifier.
•
LOA: The low output alarm signals a controller that the
rectifier input voltage is below the lower limit of the
rectifier operating voltage.
•
AC voltage monitor circuit: This circuit monitors the ac
input voltage and shuts the rectifier down if the ac voltage
drops below 170 volts for plants with 208-volt ac input and
195 volts for plants with 240-volt ac input.
Additional
Features
Dynamic Response
For any step load change of 10 to 90 percent, or 90 to 10 percent,
or a step change of 10 percent of the input voltage, the sense
