Atec Pacific-Power_GSeries - Manual (Page 2)

Precision Performance
Design Excellence
Unmatched Flexibility
The simple basic design concepts used in Pacific Power G Series equipment have resulted in continuous application expansion
since product inception. Exceptional reliability and serviceability are a hallmark of G Series equipment and have placed G Series
in the most demanding applications for AC Power in the world.
Controller Options provide for applications ranging from
simple manually controlled frequency conversion to very
sophisticated BUS programmable transient simulations.
Power modules provide output frequencies up to 5,000 Hz.
Modules have Excellent Peak Current capability and are
short circuit protected with auto recovery.
Power modules utilize linear power amplifier technology to
provide High Quality Power and Microsecond Response
to controller stimulus and load power demand.
Output Autotransformers provide a broad range of output
power forms with exceptionally high performance for
faithful transient simulation.
Power modules operate in Single or Three Phase Mode as
driven by the controller.
Power modules contain Redundant Output Devices which
are electronically disconnected from system output if failed.
Identification of suspect module is made through service
lamps and diagnostic meter on each power module. Power
modules themselves are redundant and can be replaced
“on-line” without shutting down output power.
G Series Systems are Easily Paralleled in the field.
Systems may vary in power from 6 to 90 kVA.
Universal, Wide Range Input magnetics include tap
options for common power forms found throughout
the world.
If you are unwilling to compromise your
power quality and reliability, consider the
power source that has proven itself in
thousands of demanding applications –
Pacific Power G Series.
301-F Universal
Control Module
3,6, or 9 120-GR
Power Modules
Mainframe
Power Supply
SCU/UPC-32
Programmable
Controller
390-GRC, 18 kVA Mainframe
with 301-C Manual Controller 390-GRS, 18 kVA Mainframe
with SCU/UPC-32 Programmable Controller
System Configuration
G Series Systems are readily configurable as frequency converters, line conditioners, programmable test systems
and uninterruptible power systems.
The basic building block of a G Series AC Power System is the
mainframe. The mainframe consists of the cabinet and AC-to-DC
power supply. Up to five mainframes may be paralleled to
increase system output power up to 90 kVA.
Each Pacific power source is burned in and meticulously tested
before it can leave the Pacific factory. With close attention to
detail, handcrafted workmanship comes through with every
system delivered.
Due to its modular design, failed device disconnect circuitry,
and on-line module replacement, Pacific G Series Systems
are unmatched in reliability and ease of service.
Shown is a simple block diagram that illustrates input power isolation,
control module options, single phase/three phase select mechanisms,
as well as optional output magnetics.
G Series Output Transformers are designed for operation as an auto-
former with windings in series or parallel. Carefully interleaved, these
transformers provide excellent regulation from 45 to 500 Hz (2,000 Hz
with SCU and 5,000 Hz option installed).
Some useful secondary output configurations include:
0–120 V L-L
3Ø DELTA 0–277/480 V L-L 3Ø WYE
0–240/416 V L-L 3Ø WYE 0–240 V L-L DELTA
0–220/380 V L-L 3Ø WYE 0–120/240 V Split 1Ø
When output voltages other than the “direct coupled” 0–125/216 VAC
are required, add the suffix “T” to the model number. This option adds
three high performance autotransformers within the mainframe. As the
diagram shows, the transformer primaries are activated with the direct
coupled output by the main output contactor. Output magnetics may be
connected to the single phase output contactor when specified at the
time of order. Transformers are carefully balanced to ensure load
sharing when multiple cabinets are in parallel.
2 3