SECTION 1
GENERAL
Pacific Power Source ©2013
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Document # 126050-10 Rev E
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GENERAL PRODUCT DESCRIPTION
The intended use of the Pacific Power Source MS-Series equipment is basic
frequency or voltage conversion with manually adjustable settings. With the
optional external programmable controller (UPC) it is suitable for testing
applications such as sag, surge, etc. The MS-Series power sources are a family
of Line-Conditioners/Frequency-Changers covering the power range from 62.5 to
750 kVA (50 - 600 kW), at output frequencies of 50 - 400 Hz. The basic 62.5 kVA
/ 50 kW unit is designated as the model 3060-MS. Up to 12 units can be
paralleled to provide 750 kVA / 600 kW.
WARNING
IF THIS EQUIPMENT IS NOT USED IN A MANNER SPECIFIED BY THE
MANUFACTURER, THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE
IMPAIRED
The 3060-MS functions as a double conversion power source. Input AC power is
rectified to DC by a special power supply that provides both isolation and low
input current distortion. The DC power is then converted back to AC by a high
frequency pulse-width modulated inverter stage, under the control of a highly
stable digital oscillator.
The 3060-MS unit is designed to provide high quality output power. Output
regulation and total harmonic distortion are of the order of 1% at 50 or 60Hz and
2% at 400Hz. Response time to a 100% step load change is 300 microseconds.
The machine is therefore capable of delivering very high pulse current loads.
The fast response time and excellent regulation of the MS-Series are extremely
important in applications where mixed or switched loads may cause power
interference and load "Cross-talk".
MS Series equipment is designed for long term, continuous operation in a
sheltered (no rain) environment. Because there are no batteries, it will accept a
wide ambient temperature range. The equipment is efficient (about 90%),
circulates little cooling air and is relatively tolerant of dusty environments.
The MTBF of a single cabinet 3060-MS is high (approx. 5 years).
System operation is controlled by simple, high reliability digital logic. A
microprocessor provides internal diagnostics and communicates with the
operator via a 160 character digital display.