Lucent Technologies Lineage
®
2000 50A -48V 364A-3 SR Series Rectifier
Issue 6 January 1997 Installation 5 - 9
Voltage required to operate the indicators on the rectifier, as well
as some of the relays, is derived from the ac input voltage. The
ac voltage is available to these circuits whenever ac service is
available to the rectifier.
Selection of
Internal Selective
High Voltage
Shutdown Level
The rectifier Internal Selective High Voltage Shutdown feature
is disabled when a controller is present since the controller
provides this feature. However, this voltage level should still be
set correctly to avoid false shutdowns in the event the controller
is removed for maintenance, repair or replacement. This level
should be set at least 1.5 volts above the normal float voltage to
avoid false shutdowns. See Figure 6-1 for location of DIP
switches. Set the DIP switches according to the table provided
just below the DIP switch on the face of the rectifier. This table
is reproduced here as Table 5-B.
Selection of
Backup High
Voltage
Shutdown Level
The back-up high-voltage shutdown circuit protects the rectifier
and its loads in the event of a high-voltage condition. The
rectifier shuts down when its output voltage exceeds a
user-selected threshold programmed by DIP switches in the
rectifier. These DIP switches are set in the factory to shut the
rectifier down when output voltages reach 59.5 +0.5 volts, a
typical value for telecommunications rectifiers. Two additional
DIP switch settings are provided to increase user flexibility. To
reduce the HVSD threshold below the value typical of
telecommunications rectifiers, set the DIP switches according to
Table 5-B.
Enabling/
Disabling of
Load Sharing
The load share feature of the rectifier can be enabled or disabled
through DIP switch 701 located on the front of the rectifier. Set
it according to Table 5-B.
Danger
Before turning on any rectifier, be sure that the associated
framework and cable rack are properly grounded per local job
instructions and code requirements.
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