GE Industrial Solutions CPS6000-M2 - Manual (Page 12)

CPS6000-M2 Installation Guide H5694720
Issue 8 January 2008 12
QS-Series Rectifiers
These constant power rectifiers are hot pluggable for quick installation. All interconnections (AC
input, DC output, and control) are made automatically during insertion. The rectifiers
communicate with the controller via a digital RS-485 serial cable allowing all rectifier settings to
be made automatically by the controller. Load-share circuits allow all rectifiers to apportion the
plant load equally, reducing the stress on individual units. The rectifier uses temperature
dependent variable speed fans to provide vertical flow cooling. QS-series of rectifiers are
available in 15A and 25A operating from 85VAC to 275VA and 20A, 30A, 40A, and 50A
operating from 150VAC to 275VAC.
QS-Series Rectifier
QS-Series Ringers
QS820A Ringers convert -48Vdc to a 100VA ringing power output with configurable ac voltage,
ac frequency, and dc offset. A ringer chassis may be installed in the two rightmost positions of
any rectifier shelf. Each ringer chassis includes two vertical airflow fans, accepts up to two
QS820A ringers, a primary and a spare, and provides a single ringing output. Install one ringer
for non-redundant (simplex) operation and two ringers for redundant (duplex) operation. Should
the primary ringer fail or be removed, the ringer output is provided by the spare ringer. The
controller provides ringer output voltage and frequency settings, status and alarm communication.
If communication is lost, the ringers continue to operate with the last received configuration.
QS820A Ringers and QS820M Chassis