Atec Pacific-Power-3060-MS Series - Manual (Page 3)

True Advantages
Solid State Technology
Rugged, Powerful Output Low Cost of Ownership
Input AC power is rectified to DC by a special input power supply section. This minimizes input current distortion and prevents the load power
factor from reflecting back onto the utility line. The DC is then converted back to AC by a high frequency, solid state, pulse-width modulated
switchmode inverter under the control of a highly stable digital oscillator. The result is exceptional system performance with maximum reliability.
• 350 Amps of Pulse Current is delivered by each 3060-MS for
driving non-linear loads. This eliminates the need to oversize
facility power as is common to rotary or low quality PWM
power systems.
• Load Power Factor is not an issue. The 3060-MS will drive
virtually any load without damage or risk.
• Excellent Regulation and response time eliminates load “cross
talk.” Voltage sags common to other conversion methods are
eliminated with 150 microsecond response time to a 50% load
step. The output recovers to ± 3% of nominal within less than
1/10th of a cycle at 400 Hz.
• Each 3060-MS is capable of operating as either the master or
slave in a multi-cabinet parallel system. Calculated single cabinet
MTBF is greater than five years.
• Mission Reliability is ensured. The parallel system architecture
is such that a failed slave unit automatically removes itself from
the power grid. Should the master unit fail, the operator can
select any other paralleled unit as the new master from the
front panel and restore system operation.
• Lower Maintenance Costs are achieved through built-in
diagnostics that minimize MTTR. Quick and easy repair is facilitated
with a small complement of local spares.
• Input Power Factor is a constant 0.95 lagging, regardless of
load. The MS Series actually corrects PF reflected back to the
utility, eliminating PF penalties.
• Low Installation Cost. The MS Series fits through standard
doorways. Audible noise is limited to cooling fans. There is no
400 Hz whine that requires noise isolation. Solid state design with a
forklift base eliminates the need for concrete pads and vibration
isolators common to rotary installations.
• Power Levels Grow with demand. Units may be added or
removed from the power grid as required.
• Variable Frequency range of 47–500 Hz, as well as switch
selectable fixed frequency operation of 50, 60 or 400 Hz, is
standard on every model.
• External Input is provided as a standard feature. This allows
operation as a variable frequency test power amplifier.
• UPC-32 Programmable Controller Option is available to provide
steady state and transient control of output power from the RS-232
or GPIB bus.
OUTPUT
Power 62.5 kVA/50 kW for each 3060-MS.
Voltage 0–120/208, 3 phase. May be loaded either WYE or
Delta. Other optional voltages and configurations are
available, such as: 0–240, single or split phase.
Current 175 Arms per phase continuous. 350 Apk per phase for
non-linear loads.
Overload (kW) 110% for 1 hour.
125% for 10 minutes.
150% for 10 seconds.
Frequency Selectable, crystal-based frequencies of 50, 60 or
400 Hz, variable oscillator range of 47 to 500 Hz, and
external oscillator input are all standard.
Distortion 1% maximum THD, 50/60 Hz.
2% maximum THD, 400 Hz.
Load Regulation ±1% with AGC enabled.
Line Regulation ±1% maximum for ±10% line voltage change.
Load Transient 150 microseconds for 50% load step and
Response and 300 microseconds for 100% load step.
Recovery Time
Load Power Any. Unit delivers full rated kVA into any power factor.
Factor
Load Balance None. Each phase is independently regulated.
Restrictions
Isolation Input is fully isolated from output and frame ground.
Protection Integral electronic current limiting with
auto recovery. Output CB optional.
INPUT
Voltage 208, 240, 380, 400, 416 and 480 VAC, 3 phase
Delta ± 10%.
Frequency 47–63 Hz.
Power Factor 0.95 lagging.
Protection Input CB Standard. Slow turn-on circuit
is provided to limit inrush current.
Recommended Input VAC Arms
Input Service 480 80
416 100
400 100
380 100
240 175
208 175
Size 36˝ W × 30˝ D × 72˝ H (see diagram).
Weight 715 kg (1575 lbs.).
Ventilation Self-contained fans; bottom intake, top exhaust.
1,200 CFM.
Noise Level 65 dbA at 3 feet.
Efficiency 85 to 90%.
Ambient 0° to +50°C (32° to 122°F) operating.
Temperature –10° to +70°C (+14° to +158°F) storage.
Service Access Unit is designed for front access. Power cabling
is routed through either top or bottom knock-outs.
• Run time meter.
• Auto restart.
• RS-232 serial port for remote monitoring and diagnostics.
• Programmable voltage and frequency alarm set points.
• Optional GPIB Interface with SCU/UPC-32 Programmable Controller.
• Local automatic gain control. Remote sense optional.
• ETL listing (available on standard MS Series cabinet only).
• CE label available.
Electrical Specifications Physical Specifications
Additional Features
Pacific Power Source’s MS Series equipment is a family of High Performance Line Conditioners/Frequency Converters designed to provide
highly flexible, yet reliable, AC power ranging from 62.5 to >625 kVA. Using field-proven double conversion methods, the MS Series pro-
vides unmatched power quality without sacrificing size or efficiency.
Maximum Reliability
Simple / Informative Display
Facility/Test Power Flexibility
Unmatched Price/Performance Ratio
• Measures volts, amps, watts and kVA for each input and output phase.
• Efficiency is continuously monitored, allowing system performance verification.
• Internal Diagnostics assist in quickly locating failed components, resulting in extremely low MTTR.
• Power Generation circuits are separate from display and diagnostics. A failure in the display logic
will not affect output power quality. Output power cannot be interrupted by system interrogation.
• Audible and Visual Alarms alert the operator to any conditions requiring attention.
The 3060-MS Delivers High Quality AC Power for All Applications