Pacific Power Source MS SERIES User manual

MS SERIES
AC POWER SOURCE
OPERATIONS
MANUAL
PACIFIC
POWER SOURCE


Limited Warranty:
Pacific Power Source (PPS) warrants each unit to be free from defects in material and
workmanship. For the period of two (2) years from the date of shipment to the
purchaser, PPS will either repair or replace, at its sole discretion, any unit returned to its
factory in Irvine, California. Excepted from this warranty are fuses and batteries, which
carry the warranty of their original manufacturer if applicable. It does not cover damage
arising from misuse of the unit or attempted field modifications or repairs. This warranty
specifically excludes damage to other equipment connected to this unit.
Upon notice from the purchaser within thirty (30) days of shipment of units found to be
defective in material or workmanship, PPS will pay all shipping charges for the repair or
replacement. If notice is received more than thirty (30) days from shipment, all shipping
charges shall be paid by the purchaser. Units returned on debit memo will not be
accepted and will be returned without repair.
This warranty is exclusive of all other warranties, expressed or implied.
Service & Spare Parts Limited Warranty:
Pacific Power Source (PPS) warrants repair work to be free from defects in material and
workmanship for the period of ninety (90) days from the invoice date. This warranty
applies to replaced parts or subassemblies only. This warranty does not include
batteries. All shipping and packaging charges are the sole responsibility of the buyer.
Pacific Power Source will not accept debit memos for returned power sources or
subassemblies. Debit memos will cause return of power sources or assemblies without
repair.
This warranty is exclusive of all other warranties, expressed or implied.

3060-MS
SOLID-STATE
AC POWER SOURCE/FREQUENCY CONVERTER
INSTALLATION AND OPERATION MANUAL
THE INFORMATION CONTAINED IN THIS MANUAL
IS PROPRIETARY TO PACIFIC POWER SOURCE, INC.
THIS MANUAL MAY NOT BE COPIED OR REPRINTED
WITHOUT THE EXPRESSED WRITTEN CONSENT
OF PACIFIC POWER SOURCE, INC..
PACIFIC POWER SOURCE, INC.
17692 FITCH
IRVINE, CA., U.S.A. 92614
PHONE: [phone]
FAX: [phone]
February 2013
MANUAL PART NO. 126050
Revision E
DWG NO. 126050-10e

THIS PAGE INTENTIONALLY BLANK

TABLE OF CONTENTS
Section Description Page
Pacific Power Source ©2013 v Document # 126050-10 Rev E
1.0 GENERAL DESCRIPTION................................................................................1-1
1.1 MANUAL DESCRIPTION.......................................................................................................1-1
1.2 USING THIS MANUAL...........................................................................................................1-1
1.3 SAFETY NOTICES.................................................................................................................1-1
1.4 GENERAL PRODUCT DESCRIPTION..................................................................................1-3
1.5 DEFINITIONS.........................................................................................................................1-4
1.6 DETAILED DESCRIPTION ....................................................................................................1-5
1.6.1 3060-MS CABINET..........................................................................................................1-5
1.6.2 RECTIFIER CIRCUIT.......................................................................................................1-5
1.6.3 INVERTER MODULE.......................................................................................................1-6
1.6.4 MULTI-CABINET PARALLELED SYSTEM .....................................................................1-6
2.0 SPECIFICATIONS ............................................................................................2-1
2.1 ELECTRICAL SPECIFICATIONS ..........................................................................................2-1
2.1.1 INPUT POWER................................................................................................................2-1
2.1.2 OUTPUT POWER............................................................................................................2-2
2.2 MECHANICAL SPECIFICATIONS.........................................................................................2-3
2.3 ENVIRONMENTAL SPECIFICATIONS .................................................................................2-3
3.0 INSTALLATION ................................................................................................3-1
3.1 PLANNING THE JOB.............................................................................................................3-1
3.2 MOVING, UNCRATING, AND INSPECTION.........................................................................3-4
3.3 CHANGING INPUT VOLTAGE ..............................................................................................3-6
3.4 SETTING THE CABINET INTO PLACE...............................................................................3-12
3.5 SAFETY GROUNDING / EARTHING ..................................................................................3-12
3.6 CONNECTING THE INPUT SERVICE ................................................................................3-12
3.7 CONNECTING THE OUTPUT SERVICE ............................................................................3-15
3.8 MULTIPLE CABINET SYSTEM............................................................................................3-18
3.9 ELECTRICAL SURVEY CHECKLIST ..................................................................................3-21

TABLE OF CONTENTS
Section Description Page
Pacific Power Source ©2013 vi Document # 126050-10 Rev E
4.0 OPERATION.....................................................................................................4-1
4.1 INSPECTION OF INSTALLATION.........................................................................................4-1
4.2 INSTALLATION RECORD .....................................................................................................4-1
4.3 DESCRIPTION OF CONTROLS AND INDICATORS............................................................4-4
4.3.1 LCD AND INTERROGATION SWITCHES......................................................................4-5
4.3.1.1 INPUT KEY.................................................................................................................4-6
4.3.1.2 OUTPUT KEY.............................................................................................................4-6
4.3.1.3 STATUS KEY .............................................................................................................4-8
4.3.1.4 DIAGNOSTIC KEY...................................................................................................4-10
4.3.1.5 HELP KEY................................................................................................................4-11
4.3.1.6 ALARM KEY.............................................................................................................4-13
4.3.1.7 SPECIAL KEY COMBINATIONS .............................................................................4-14
4.3.2 MODE SELECT, EMERGENCY OFF, AND ON-RESET SWITCHES..........................4-14
4.3.2.1 MODE SELECT SWITCH.........................................................................................4-14
4.3.2.2 EMERGENCY OFF AND START/RESET SWITCHES ...........................................4-15
4.3.3 FREQUENCY SELECT SWITCH AND VOLTS ADJUST..............................................4-16
4.3.3.1 FREQUENCY SELECT SWITCH.............................................................................4-16
4.3.3.2 VOLTAGE ADJUST CONTROLS ............................................................................4-16
4.4 OPERATING PROCEDURES..............................................................................................4-17
4.4.1 MODES OF OPERATION..............................................................................................4-18
4.4.2 FIRST TIME OPERATION.............................................................................................4-21
4.4.3 PARALLEL CABINET OPERATION..............................................................................4-22
4.4.4 NORMAL SHUTDOWN PROCEDURE .........................................................................4-23
4.4.5 EMERGENCY SHUTDOWN PROCEDURE .................................................................4-23
4.5 SETUP SWITCHES..............................................................................................................4-24
4.5.1 DISPLAY PCB (126072 or 126172)...............................................................................4-26
4.5.2 CONTROL PCB (126070 or 126079) ............................................................................4-28
4.6 FEATURE CONNECTORS..................................................................................................4-30
4.6.1 P1, P2 PARALLELING...................................................................................................4-30
4.6.2 J3 AND J4 SERIAL I/O ..................................................................................................4-32
4.6.3 J6 EXTERNAL OSCILLATOR .......................................................................................4-35
4.6.4 J5 AND J7 SYSTEM METERING OUTPUTS................................................................4-35
4.6.5 J8 REMOTE METERING INPUTS.................................................................................4-36
4.6.6 J9 AUXILIARY ALARM OUTPUTS................................................................................4-36
5.0 MAINTENANCE................................................................................................5-1
5.1 MAINTENANCE SCHEDULE.................................................................................................5-1

TABLE OF CONTENTS
Section Description Page
Pacific Power Source ©2013 vii Document # 126050-10 Rev E
6.0 SERVICE...........................................................................................................6-1
6.1 DESCRIPTION.......................................................................................................................6-1
6.1.1 MAINFRAME DESCRIPTION..........................................................................................6-1
6.1.2 CONTROL MODULE DESCRIPTION .............................................................................6-4
6.1.3 INVERTER DESCRIPTION .............................................................................................6-6
6.2 THEORY OF OPERATION ....................................................................................................6-8
6.2.1 THEORY OF OPERATION - POWER CONVERSION CIRCUITS ...............................6-11
6.2.2 THEORY OF OPERATION - CONTROL CIRCUITS.....................................................6-13
6.2.3 THEORY OF OPERATION - DC POWER SUPPLY .....................................................6-15
6.2.4 THEORY OF OPERATION - DISPLAY CIRCUITS .......................................................6-17
6.2.5 THEORY OF OPERATION - PARALLELING CIRCUITS..............................................6-18
6.3 TROUBLESHOOTING PROCEDURE .................................................................................6-20
6.3.1 PERFORMANCE CHECK .............................................................................................6-21
6.3.2 LVPS SERVICE PROCEDURE.....................................................................................6-23
6.3.3 DISPLAY SERVICE PROCEDURE...............................................................................6-24
6.3.4 EMER OFF SERVICE PROCEDURE............................................................................6-26
6.3.5 NO-INVERTER-VOLTS SERVICE PROCEDURE ........................................................6-28
6.3.6 ABNORMAL VOLTAGE SERVICE PROCEDURE........................................................6-30
6.4 SCHEMATIC DIAGRAMS....................................................................................................6-32
6.5 ASSEMBLY REPLACEMENT PROCEDURES....................................................................6-35
6.5.1 INVERTER ASSEMBLY REPLACEMENT ....................................................................6-36
6.5.2 CONTROL PCB ASSEMBLY REPLACEMENT ............................................................6-37
6.5.3 MODULATOR PCB ASSEMBLY REPLACEMENT.......................................................6-38
6.5.4 DISPLAY PCB ASSEMBLY REPLACEMENT...............................................................6-38
6.5.5 LVPS PCB ASSEMBLY REPLACEMENT.....................................................................6-39
6.5.6 DISCHARGE PCB ASSEMBLY REPLACEMENT.........................................................6-40
6.5.7 DRIVER PCB ASSEMBLY REPLACEMENT ................................................................6-41
6.5.8 SNUBBER PCB ASSEMBLY REPLACEMENT.............................................................6-42
6.6 COMPONENT REPLACEMENT PROCEDURES................................................................6-42
6.6.1 INPUT POWER PANEL COMPONENT REPLACEMENT............................................6-43
6.6.2 DC POWER SUPPLY COMPONENT REPLACEMENT ...............................................6-44
6.6.3 INVERTER COMPONENT REPLACEMENT ................................................................6-45
6.7 RETURNING ASSEMBLIES FOR REPAIR .........................................................................6-46

TABLE OF CONTENTS
Figure Description Page
Pacific Power Source ©2013 viii Document # 126050-10 Rev E
List of ILLUSTRATIONS and TABLES
FIGURE 2.1.1 INPUT RATINGS................................................................................2-1
FIGURE 2.1.3 OUTPUT RATINGS............................................................................2-2
FIGURE 2.2 OUTLINE DRAWING...........................................................................2-4
FIGURE 3.1 INSTALLATION DETAIL –(MECHANICAL CLEARANCES)...............3-2
TABLE 3.1 ENVIRONMENTAL SURVEY CHECKLIST.............................................3-3
FIGURE 3.2 CRATING AND MOVING OUTLINE DRAWING..................................3-5
FIGURE 3.3.1 480 VINPUT CONFIGURATION........................................................3-8
FIGURE 3.3.2 380 VINPUT CONFIGURATION........................................................3-9
FIGURE 3.3.3 240 VINPUT CONFIGURATION......................................................3-10
FIGURE 3.3.4 208 VINPUT CONFIGURATION......................................................3-11
TABLE 3.6.1 INSTALLATION WIRING...................................................................3-13
FIGURE 3.6 INPUT TERMINAL DETAIL...............................................................3-13
FIGURE 3.6.1 CUSTOMER INPUTWIRING DETAIL..............................................3-14
FIGURE 3.7 OUTPUT TERMINAL DETAIL ...........................................................3-16
FIGURE 3.7.1 OUTPUT CONTACTOR....................................................................3-17
(CUSTOMER LOADWIRING DETAIL) ......................................................................3-17
FIGURE 3.7.2 OPTIONAL OUTPUT CIRCUIT BREAKER.......................................3-17
(CUSTOMER LOADWIRING DETAIL) ......................................................................3-17
FIGURE 3.8.1 MULTIPLE CABINET SYSTEM OUTLINE........................................3-19
FIGURE 3.8.2 MULTIPLE CABINET SYSTEMWIRING ..........................................3-20
FIGURE 3.9 ELECTRICAL SURVEY CHECKLIST.....................................................3-21
TABLE 4.2 INSTALLATION RECORD..........................................................................4-2
FIGURE 4.3.1 LCD AND INTERROGATION SWITCHES..........................................4-5
FIGURE 4.3.2 MODE SELECT, EMER OFF, AND START/RESET.........................4-15
FIGURE 4.3.3 FREQUENCY SELECT AND VOLTS ADJUST.................................4-16
FIGURE 4.4.1 SLAVE CONTROL MODE ................................................................4-20
FIGURE 4.5 CABINET ASSEMBLY.......................................................................4-25
FIGURE 4.5.1ADISPLAY PCB ASSY., 126072 .......................................................4-27
FIGURE 4.5.1BDISPLAY PCB ASSY., 126172 .......................................................4-27
FIGURE 4.5.2 CONTROL PCB ASSY., 126070 AND 126079....................................4-29
FIGURE 4.6 CABINET TOP VIEW -FEATURE CONNECTOR DETAIL................4-31
TABLE 5.1.1 6MONTH MAINTENANCE CYCLE.....................................................5-1
FIGURE 5.1.1 REAR OF MS-SERIES CABINET –BACK PANEL REMOVED.............5-2
FIGURE 5.1.2 UNDERSIDE OF MS-SERIES INVERTERS..........................................5-2
TABLE 5.1.2 4-6WEEK MAINTENANCE CYCLE....................................................5-3
FIGURE 5.1.3 FIRESCREEN LOCATION FOR CLEANING.........................................5-3
FIGURE 5.1.4 MS-SERIES MAINTENANCE LOG.....................................................5-4
FIGURE 6.1.1 MAINFRAME......................................................................................6-3
FIGURE 6.1.2 CONTROL MODULE..........................................................................6-5
FIGURE 6.1.3 INVERTER..........................................................................................6-7
FIGURE 6.2.1 BLOCK DIAGRAM POWER CONVERSION CIRCUITS ...................6-12

TABLE OF CONTENTS
Figure Description Page
Pacific Power Source ©2013 ix Document # 126050-10 Rev E
List of ILLUSTRATIONS and TABLES (continued)
FIGURE 6.2.2 BLOCK DIAGRAM SYSTEM CONTROL CIRCUITS.........................6-14
FIGURE 6.2.3 BLOCK DIAGRAM DC POWER SUPPLY.........................................6-16
FIGURE 6.2.4 BLOCK DIAGRAM DISPLAY CIRCUITS...........................................6-17
FIGURE 6.2.5 BLOCK DIAGRAM PARALLELING CIRCUITS.................................6-19
FIGURE 6.3.1 PERFORMANCE CHECK FLOW CHART ........................................6-22
FIGURE 6.3.2 LVPS FLOW CHART........................................................................6-23
FIGURE 6.3.3 DISPLAY FLOW CHART ..................................................................6-25
FIGURE 6.3.4 EMER OFF FLOW CHART...............................................................6-27
FIGURE 6.3.5 NO-INVERTER-VOLTAGE FLOW CHART.......................................6-29
FIGURE 6.3.6 ABNORMAL VOLTS FLOW CHART.................................................6-31
FIGURE 6.4.1 LVPS SCHEMATIC...........................................................................6-32
FIGURE 6.4.2 INPUT POWER SCHEMATIC...........................................................6-33
FIGURE 6.4.3 DC POWER SUPPLY SCHEMATIC .................................................6-34
FIGURE A.1 3060-MS MAINFRAME MAINTENANCE/SERVICEABLE PARTS A-1
FIGURE A.2 3060-MS INVERTER ASSEMBLY MAINTENANCE/SERVICEABLE
PARTS A-2
FIGURE B.1 MS3060 SYSTEM SCHEMATIC B-1

SECTION 1 GENERAL
Pacific Power Source ©2013 1-1 Document # 126050-10 Rev E
1.0 GENERAL DESCRIPTION
1.1 MANUAL DESCRIPTION
This manual is written to provide the information required to use the MS-Series
AC Power Source effectively. This Operations Manual describes proper
installation, operation and maintenance of the MS series power source units.
1.2 USING THIS MANUAL
This manual primarily covers installation and operation. It is very important that
the user reads Section 3, INSTALLATION and Section 4, OPERATION, prior to
installing this equipment. A thorough understanding of these two sections is
required to operate this equipment properly.
If questions arise while reading this manual, the user is encouraged to call Pacific
Power Source Inc. Pacific maintains a toll-free number which is 1-800-854-2433
(949-251-1800 Outside the USA), Fax [phone] or contact us through our
website: www.pacificpopwer.com
Section 5 discusses maintenance, Section 6 is for service. These sections need
to be read only when such activities are required to be performed.
1.3 SAFETY NOTICES
MS-Series equipment is capable of transferring very large amounts of electrical
energy very quickly. This basic quality is fundamental to any high-performance
power source. The warnings and cautions listed below should be observed at all
times.
Warnings indicate potentially hazardous situations which, if not avoided, could
result in death or serious injury. All warnings throughout this manual will appear
as shown below.

SECTION 1 GENERAL
Pacific Power Source ©2013 1-2 Document # 126050-10 Rev E
WARNING
THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE CIRCUITS!! LETHAL POTENTIALS
ARE CONTAINED WITHIN THE CABINET.
CARE MUST BE EXERCISED WHEN SERVICING THIS EQUIPMENT IN ORDER TO PREVENT
SERIOUS OPERATOR INJURY OR EQUIPMENT DAMAGE.
OBSERVE THE FOLLOWING WHEN SERVICE AND MAINTENANCE ARE REQUIRED:
1) REMOVE ALL JEWELRY FROM ARMS AND NECK WHEN SERVICING THIS EQUIPMENT.
THIS PREVENTS THE POSSIBILITY OF SHORTING THROUGH THE JEWELRY AND
CAUSING BURNS TO THE OPERATOR.
2) WEAR SAFETY GLASSES WHEN SERVICING THIS EQUIPMENT TO PREVENT EYE INJURY
DUE TO FLYING PARTICLES CAUSED BY ACCIDENTAL SHORT CIRCUIT CONDITIONS.
3) DO NOT REMOVE ANY PANEL OR COVER WITHOUT FIRST REMOVING THE INPUT
SERVICE BY OPENING ALL CIRCUIT BREAKERS.
4) SERVICE OTHER THAN EXTERNAL CLEANING SHOULD BE REFERRED TO PERSONNEL
AUTHORIZED BY THE FACTORY TO SERVICE THIS EQUIPMENT.
Cautions indicate a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury. A caution also may be used to alert against
unsafe practices. Cautions will appear as shown below. All cautions should be
rigorously observed.
CAUTION -
Read Section 3, INSTALLATION, and Section 4, OPERATION,
of this manual before installing or operating this equipment.
To protect equipment from damage a caution will be used as follows:
CAUTION
USING IMPROPER GAUGE OF INPUT CABLE MAY OVERHEAT AND DAMAGE THE
EQUIPMENT. SEE SECTION 2.0 SPECIFICATIONS FOR THE PROPER SIZING OF
INPUT CABLE.

!
!

SECTION 1 GENERAL
Pacific Power Source ©2013 1-3 Document # 126050-10 Rev E
1.4 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.


SECTION 1 GENERAL
Pacific Power Source ©2013 1-4 Document # 126050-10 Rev E
1.5 DEFINITIONS
Common terms and component names, as used throughout this MS-Series
manual are defined below:
Power Source
All components functioning together which convert input AC
power to isolated, conditioned, variable frequency and variable
voltage output AC power to the load.
Cabinet
One enclosure that contains a Power Source.
System
One or more enclosures which make up a paralleled cabinet
power source.
Rectifier
The circuit component that contains the equipment and controls
necessary to convert the input AC power to DC power.
Inverter
The circuit component that contains the equipment and controls
necessary to convert DC power from the rectifier to AC power
required by the load. A high frequency pulse-width modulated
switcher.
Internal
Control
System
The signal processing circuits that regulate the power
conversion processes, detect fault conditions, and control the
sequence of operation of the Power Source. This term may be
shortened to "Control System."
Operator
Controls
The controls which are used by the operator to monitor and
operate the Power Source. They are located on the front of the
cabinet exterior.
Input Power
Power provided by the electrical utility company, or auxiliary
generator, connected to the input of the Power Source.
Output Power
Power provided by the Power Source to the load, connected to
the output of the Power Source.

SECTION 1 GENERAL
Pacific Power Source ©2013 1-5 Document # 126050-10 Rev E
1.6 DETAILED DESCRIPTION
This paragraph provides a detailed description of each major sub-assembly, its
purpose, and its general operation.
1.6.1 3060-MS CABINET
The cabinet consists of a rectifier, three-phase inverter, protective devices, and
accessories as required for proper operation.
1.6.2 RECTIFIER CIRCUIT
The rectifier circuit is a solid-state assembly designed to provide direct current to
the inverter unit.
A 12 pulse input rectifier is used, reducing current harmonic feedback into the
input AC line to a nominal 12%rms. The rectifier also controls the input power
factor so that it remains above 0.85 lagging at full load.
For input isolation and adapting to a variety of available input voltages, a dry type
power transformer is used before the rectifier unit. The transformer's winding
temperature is monitored by Internal Control System diagnostics to ensure that
the transformer temperature does not exceed design limits.
The rectifier circuit provides a soft start-up feature whereby when the AC power
is first applied, the total initial power drawn at the input terminals will not exceed
100% of rated input power.
DC overvoltage protection is provided so that if the DC Bus voltage rises above
the pre-set limit, the Power Source will shut down automatically.
DC undervoltage protection is provided so that if the DC Bus voltage drops below
the pre-set limit, the Power Source will shut down automatically.
AC overvoltage protection on the AC input circuit shuts down the power source
when the input voltage rises above a preset percent of input voltage.
The Low Voltage Power Supply has its own undervoltage protection to shut down
the power source should the power supply voltage to the control circuits fall
below an acceptable level.

SECTION 1 GENERAL
Pacific Power Source ©2013 1-6 Document # 126050-10 Rev E
1.6.3 INVERTER MODULE
The inverter module is a solid-state device that converts power from the rectifier
circuit to provide the rated AC system output within specified limits.
The output frequency of the inverter is controlled by a digital oscillator.
The oscillator is adjustable over the range of 47 to 500Hz in the variable position.
In the fixed frequency positions, the oscillator is designed to control the inverter
output frequency within ±0.01%. Drift will not exceed ±0.01% during a 24-hour
period. Total frequency deviation, including short time fluctuations and drift, is
typically within ±0.01% from the specified frequency.
The inverter is capable of supporting transient overloads up to 150%, or any
continuous load within its rating, without reducing the output voltage. Loads
greater than 150% may cause a reduction of the output voltage.
The inverter will current limit at 150% of rated current. The inverter is capable of
supplying at least 200% of rated RMS current for short circuit conditions. If the
short circuit is sustained, the inverter will shut down and disconnect automatically
from the output.
Each inverter output phase voltage is independently regulated to ±0.5%, with
AGC enabled, such that unbalanced loading will not cause the output voltage to
exceed the specified voltage unbalance.
An output power filter is incorporated in the inverter unit. The filter reduces the
inverter output sine wave voltage harmonics to 1% RMS total and single
harmonics to 0.5% RMS maximum for linear loads at 50-60Hz.
Power semiconductors in the inverter unit are fused with fast acting fuses, so that
loss of any one power semiconductor will not cause cascading failures.
1.6.4 MULTI-CABINET PARALLELED SYSTEM
Up to twelve cabinets may be paralleled together for higher power systems.
Each 3060-MS is capable of operating as either a SLAVE or MASTER in multi-
cabinet parallel operation but only one Master may be active at a time.
Parallel system architecture is such that any failed slave unit automatically drops
off-line.
A failed MASTER turns the entire system off. In this event an operator can select
any other paralleled unit as the MASTER from a front panel control and restore
system operation.

SECTION 2 SPECIFICATIONS
Pacific Power Source ©2013 2-1 Document # 126050-10 Rev E
2.0 SPECIFICATIONS
Electrical and mechanical specifications of the MS Series AC Power Source are
listed in the following tables.
2.1 ELECTRICAL SPECIFICATIONS
2.1.1 INPUT POWER
MS-Series equipment is intended for use on a Category II supply.
Voltage:
480, 416, 400, 380, 240 or 208 VACL-L ±15%.
Frequency:
47-63 Hz (other frequencies optional)
Magnetizing Sub Cycle:
100% of normal full load input, inrush current,
maximum.
Power Factor:
Not less than 0.85 lagging at full load.
Current Distortion:
12% THD nominal
MODEL
NUMBER
INPUT
(KVA)
INPUT
(KW)
3060-MS
62
57
Input Volts
Input Amps
Recommended
Input Service
Taps Available
480
75
80 A
Nom, -7%, -10%
416
86
100 A
Nom, -9%, -4%, +3%, +8%
400
91
100 A
Nom, -9%, -5%, +4%, +8%
380
94
100 A
Nom, +5%, +10%, -4%, -8%,
-17%
240
150
175 A
Nom, -13%
208
170
175 A
Nom, +15%, -9%
FIGURE 2.1.1 INPUT RATINGS
Input Controls: Contactors provide input ON-OFF control. An input circuit
breaker disconnects all input power from the cabinet.
Protection: Meets National Electrical Code Protection requirements for
single phase, and reversed-phase rotation protection.
Voltage Transients: Meets the Institute of Electrical and Electronics Engineers
587 requirements at 4000 V peak. Up to 150% line voltage
for ½-cycle.
Phase Rotation: Unit will operate properly with any input phase rotation.
There are no input phase rotation sensitive devices.
Isolation: An input transformer with an electrostatic shield provides
isolation between the input and output of the system.
Balance: All three input phases are equally loaded regardless of
output phase load unbalance.

SECTION 2 SPECIFICATIONS
Pacific Power Source ©2013 2-2 Document # 126050-10 Rev E
2.1.2 OUTPUT POWER
Power: 50 kW
Volt-Amps: 62.5 kVA
Voltage: 120/208 3ΦWYE. May be loaded WYE or DELTA.
0-132 VACL-N Adjustment Range, with nominal input,
adjustable by front panel controls
Other voltages available as options..
Volt Regulation 0-100% Load Step: ±1% of output voltage regardless of load
unbalance, with AGC enabled.
Transient Voltage Regulation and Recovery: Output voltage recovers from a
50% load step to within 1% of nominal in less than 150
microseconds.
Harmonic Voltage Content for Linear Loads: Maximum 1% RMS total,
maximum 0.5% any single harmonic for linear loads 50-
60Hz, 2% RMS total for 400Hz. Paralleled Systems maybe
higher.
Current: 175 amps per phase.
Inverter Fault Clearing Current: Greater than 200% of full load.
Pulse Current: Greater than 200% per phase of pulse current for driving
non-linear loads.
Inverter Overload: - 150% of full load for 30 seconds
-125% of full load for 10 minutes
-110% of full load for 1 hour
Frequency Range Selectable, fixed frequencies at 50, 60, 400 Hz.
Variable frequency range 47-500 Hz.
External Oscillator input available.
Frequency Accuracy and Stability: ±0.01% typically for fixed frequencies.
Frequency Drift: ±0.01% for fixed frequencies. (24hr period)
Load Power Factor: No Restrictions
MODEL
NUMBER
Output
(KVA)
Output RMS
(KW)
Output
(CURRENT/Ø)
Output Short
Circuit
(CURRENT/Ø)
3060-MS
62.5
50
175A
>350A peak
FIGURE 2.1.3 OUTPUT RATINGS
For a paralleled cabinet system multiply the above ratings by the number of
cabinets in the system.

SECTION 2 SPECIFICATIONS
Pacific Power Source ©2013 2-3 Document # 126050-10 Rev E
2.2 MECHANICAL SPECIFICATIONS
Weight:
1550 Lbs (705 Kg)
Height:
72" (183cm)
Width:
36" (91.5cm)
Depth:
30" (76.2cm)
Installation Clearance:
36" (91.5cm) at front of cabinet for service,
12" (30.5cm) at top for airflow
0 side and rear
2.3 ENVIRONMENTAL SPECIFICATIONS
Air Flow:
1200 CFM (566 l/s) bottom intake, top exhaust
Noise level:
65dbA at 3 feet
Ambient Temperature:
Operating 0 to 40ºC
Storage -10 to +70ºC
Relative Humidity:
(non-condensing)
0 to 80% (standard configuration)
0 to 95% (conformal coated PCB option)
Elevation:
Operating 6500 Ft.(1970 m)
Derate to 70% at 11,500 Ft.(3480 m)
Storage 40,000 Ft.(12,120 m)
Heat Dissipation at 50kW,
62.5kVA load:
20 kBTU/hr.
Pollution Environment:
Degree 2 or better
Indoor Use Only

SECTION 2 SPECIFICATIONS
Pacific Power Source ©2013 2-4 Document # 126050-10 Rev E
FIGURE 2.2 OUTLINE DRAWING

SECTION 3 INSTALLATION
Pacific Power Source ©2013 3-1 Document # 126050-10 Rev E
3.0 INSTALLATION
WARNING
THE PROPER INSTALLATION OF AN MS-SERIES AC POWER SOURCE REQUIRES
A THOROUGH UNDERSTANDING OF THE INFORMATION PRESENTED IN THIS
SECTION OF THE MANUAL.
IF THIS EQUIPMENT IS NOT INSTALLED AND USED IN A MANNER SPECIFIED BY
THE MANUFACTURER, THE PROTECTION PROVIDED BY THE EQUIPMENT MAY
BE IMPAIRED
Should any question arise regarding the installation of this equipment, the user is
encouraged to call Pacific Power Source, toll free in the USA at 1-800-854-2433 or 949-
251-1800 internationally.
Installation of an MS Power Source consists of the following steps:
1.
Planning the job. (Refer to paragraph 3.1)
2.
Uncrating and Moving the system. (Refer to paragraph 3.2)
3.
Changing Input Voltage, if required. (Refer to paragraph 3.3)
4.
Setting the cabinet into place. (Refer to paragraph 3.4)
5.
Making Input Connections. (Refer to paragraph 3.6)
6.
Making Output Connections. (Refer to paragraph 3.7)
7.
Multiple Cabinet Paralleled Systems. (Refer to paragraph 3.8)
8.
Inspecting the Installation. (Refer to paragraph 3.9)
3.1 PLANNING THE JOB
The main objective in planning the job is to determine the hardware required to
install the MS-Series Power Source. Proper consideration of the items below will
allow the installation to proceed in an orderly manner.
The first step in planning the job is to determine the size of power source
required to service the load. In normal situations the load should not exceed
80% of the power source's full load ratings. This margin allows the user to add
future loads to the Power Source without sacrificing surge and overload
capabilities.
