ASEA AC15QTP User manual

Operations Manual
ASEA Power Systems
Models AC15QTP and AC20QTP
Single Phase Yacht Power Converters
P/N 623052
Revision ~
Issued 10/23/2018

AC15QTP And AC20QTP Operations Manual... 2
CERTIFICATION
ASEA Power Systems certifies that this product was thoroughly tested and
inspected and found to meet or exceed its published specifications when shipped
from the factory.
WARRANTY
ASEA Power Systems warrants each unit to be free from defects in material and
workmanship. For a period of 18 months after purchase or 12 months after
installation (whichever is shorter), ASEA Power Systems will repair or replace any
defective module provided the unit has been installed and operated in a manner
according to this manual. A thorough inventory of spare parts & modules is
maintained at our factory. Our world-wide sales/support facilities also inventory a
complement of spare parts and modules.
ASEA Power Systems is not responsible for consequential damage arising from
the use of its equipment. It does not apply to extensively modified or non-standard
systems. Debit memos for returned units are not accepted, and will cause return of
the system without repair.
LIFE SUPPORT POLICY
ASEA Power Systems does not authorize the use of any of its products or systems
for use an AC voltage supply (source) for life support systems. Life support
systems are devices which support or sustain life, and whose failure to perform,
when properly used in accordance with this Operations Manual, can be reasonably
expected to result in significant injury to the user.

AC15QTP And AC20QTP Operations Manual....3
1 USING THIS MANUAL
This manual has been written as an Operations Manual. Installation, operations,
and preventative maintenance are covered in detail. This manual will cover the
following models:
AC15QTP 15kVA Single Phase Yacht Power Converter
AC20QTP 20kVA Single Phase Yacht Power Converter
This converter is capable of being paralleled for higher power applications.
The Model AC15QTP can be paralleled to produce the following model:
AC30QTP/2 30kVA Single Phase Yacht Power Converter
The Model AC20QTP can be paralleled to produce the following model:
AC40QTP/2 40kVA Single Phase Yacht Power Converter
It is important that the operator reads this manual prior to installing and operating
the converter. A thorough understanding of the information covered in this manual
is required for proper installation and operation.
If any questions arise while reading this manual, the user is encouraged to call
ASEA Power Systems. ASEA Power Systems is located at:
ASEA Power Systems
15172 Newsboy Circle
Huntington Beach, CA. 92649
Phone [phone]
FAX [phone]
Web http://www.aseapower.com

AC15QTP And AC20QTP Operations Manual....4
TABLE OF CONTENTS
CERTIFICATION .......................................................................................................................... 2
WARRANTY ................................................................................................................................. 2
1USING THIS MANUAL........................................................................................................ 3
2SAFETY NOTICES................................................................................................................ 6
3INTRODUCTION TO THE AC15QTP AND AC20QTP ..................................................... 8
4SPECIFICATIONS............................................................................................................... 10
4.1 ELECTRICAL SPECIFICATIONS.............................................................................. 10
4.1.1 Input Service............................................................................................................. 10
4.1.2 Output Service .......................................................................................................... 10
4.1.3 Control, Metering, and Status................................................................................... 12
4.2 PHYSICAL SPECIFICATIONS .................................................................................. 12
4.2.1 Mechanical................................................................................................................ 12
4.2.2 Environmental........................................................................................................... 12
5INSTALLATION ................................................................................................................. 13
5.1 MECHANICAL INSTALLATION.............................................................................. 14
5.2 ELECTRICAL INSTALLATION ................................................................................ 17
5.2.1 Input Power Connections.......................................................................................... 18
5.2.2 Output Power Connections....................................................................................... 19
5.2.3 Grounding................................................................................................................. 19
5.2.4 Cable Preparation...................................................................................................... 20
5.2.5 Multi-Cabinet Connections....................................................................................... 22
5.2.6 Seamless Transfer Connections................................................................................ 23
5.2.7 Other Optional Connections ..................................................................................... 24
6OPERATION........................................................................................................................ 25
6.1 POWER TURN-ON PROCEDURE............................................................................. 25
6.1.1 Systems Not Equipped With The Seamless Transfer Option................................... 27
6.1.2 Systems Equipped With The Seamless Transfer Option.......................................... 28
6.2 MULTI-CABINET OPERATION................................................................................ 30
6.3 AUTO-RESTART FEATURE...................................................................................... 31
6.3.1 Operation................................................................................................................... 32
6.4 TURN-OFF PROCEDURE .......................................................................................... 32
6.4.1 Systems Not Equipped With The Seamless Transfer Option................................... 32
6.4.2 Systems Equipped With The Seamless Transfer Option.......................................... 33
6.5 REMOTE COMMUNICATIONS................................................................................ 34
6.5.1 RS-232C/SCPI.......................................................................................................... 35
6.5.2 RS-485/Modbus........................................................................................................ 36
7SOFTWARE FEATURES.................................................................................................... 37
7.1 GENERAL.................................................................................................................... 37
7.2 LOAD MANAGEMENT.............................................................................................. 37

AC15QTP And AC20QTP Operations Manual....5
7.3 LOAD MANAGEMENT OPERATION ...................................................................... 38
7.3.1 Shore Cord Alarm, Single, Master, and Slave converters ........................................ 38
7.3.2 Shore Cord Setup, Single, Master, or Slave Converters........................................... 39
7.3.3 Voltage Droop, Single or Master Converters ........................................................... 40
7.3.4 Automatic Transfer to Generator, Single or Master Converters (Seamless Transfer
installed)................................................................................................................................ 41
7.3.5 Quick Setup of Shore Cord Alarm, Single, Master, or Slave Converters................. 42
7.4 GENERATOR FREQUENCY ANALYSIS................................................................. 42
7.5 CONVERTER OUTPUT IMPEDANCE CONTROL.................................................. 42
7.6 AGC CONTROL .......................................................................................................... 43
7.7 KW-HOUR METER AND MAXIMUM POWER LEVEL DISPLAY......................... 44
7.8 CONVERTER OUTPUT VOLTAGE CONTROL....................................................... 45
7.9 EVENT LOG ................................................................................................................ 45
8TROUBLE-SHOOTING AND DIAGNOSTICS................................................................. 48
8.1 COMMON PROBLEMS.............................................................................................. 48
8.2 FAILURE AND WARNING MESSAGES .................................................................. 49
8.3 INFO DISPLAY............................................................................................................ 49
8.4 STATUS WORDS........................................................................................................ 50
8.5 GATHERING DATA ................................................................................................... 50
8.6 SOFTWARE TOOLS ................................................................................................... 50
9CALIBRATION ................................................................................................................... 52
10 MAINTENANCE................................................................................................................. 54
11 INTERNATIONAL POWER FORM REFERENCE........................................................... 55
12 INDEX.................................................................................................................................. 62
TABLE OF FIGURES
FIGURE 1: BLOCK DIAGRAM ................................................................................................... 8
FIGURE 2: MECHANICAL OUTLINE...................................................................................... 16
FIGURE 3: MOUNTING............................................................................................................. 16
FIGURE 4: MODULE POWER CABLE CONNECTION.......................................................... 20
FIGURE 5: SOFT-START PANEL ............................................................................................. 21
TABLE OF TABLES
Table 1: Input Specifications........................................................................................................ 10
Table 2: Output Specifications...................................................................................................... 10
Table 3: Output Current, Rated Continuous RMS........................................................................ 11
Table 4: Physical Dimensions....................................................................................................... 12
Table 5: Recommended Installation Clearances........................................................................... 14
Table 6: Input Service Over-Current Protection Specifications................................................... 17

AC15QTP And AC20QTP Operations Manual....6
2 SAFETY NOTICES
Each shore power converter is capable of transferring very large amounts of electrical energy
very quickly. This quality is fundamental to a high performance power converter. International
symbols are used throughout this manual to stress important information. Read the text below
each symbol carefully and use professional skills and prudent care when performing the actions
described by the text.
THE CAUTION SYMBOL (TRIANGLE ENCLOSING AN EXCLAMATION POINT)
INDICATES A CONDITION THAT COULD SERIOUSLY DAMAGE EQUIPMENT
AND POSSIBLY INJURE PERSONNEL. CAUTIONS WILL BE PRESENTED IN THIS
FORM. ALL CAUTIONS SHOULD BE RIGOROUSLY OBSERVED.
THE WARNING SYMBOL (TRIANGLE WITH A LIGHTNING BOLT) IS USED TO
SIGNAL THE PRESENCE OF A POSSIBLE SERIOUS, LIFE THREATENING
CONDITION. A CONDITION THAT IS HAZARDOUS TO BOTH PERSONNEL AND
EQUIPMENT WILL BE ISSUED AS A WARNING. ALL WARNINGS WILL BE
PRESENTED IN THIS FORM.

AC15QTP And AC20QTP Operations Manual....7
THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE
CIRCUITS! LETHAL POTENTIALS ARE CONTAINED WITHIN THE
SYSTEM—EVEN WHEN IT IS APPEARS TO BE NON-OPERATIONAL.
CARE MUST BE EXERCISED WHEN SERVICING THIS EQUIPMENT IN
ORDER TO PREVENT SERIOUS OPERATOR INJURY OR EQUIPMENT
DAMAGE.
DO NOT WORK ON OR OPERATE THIS EQUIPMENT UNLESS YOU ARE
FULLY QUALIFIED TO DO SO. NEVER WORK ALONE.
THE EQUIPMENT IS NOT IGNITION RATED, IT MUST NOT BE OPERATED
IN AREAS WHERE COMBUSTIBLE GASES MAY ACCUMULATE.
DO NOT REMOVE THE SHORE CORD(S) FROM THE DOCK PEDESTAL
WITHOUT FIRST OPENING THE DOCK OR YACHT BREAKER(S).
FAILURE TO DO SO MAY RESULT IN DAMAGE TO THE CONVERTER AND
PEDESTAL.
OBSERVE THE FOLLOWING WHEN SERVICE AND MAINTENANCE ARE
REQUIRED:
REMOVE ALL JEWELRY FROM ARMS AND NECK WHEN SERVICING
THIS EQUIPMENT. THIS PREVENTS THE POSSIBILITY OF SHORTING
THROUGH THE JEWELRY, OR ELECTROCUTION OF THE OPERATOR.
WEAR SAFETY GLASSES WHEN SERVICING THIS EQUIPMENT TO
PREVENT EYE INJURY DUE TO FLYING PARTICLES CAUSED BY
ACCIDENTAL SHORT CIRCUIT CONDITIONS.
DO NOT REMOVE ANY PANELS OR COVERS WITHOUT FIRST
OPENING ALL SHORE POWER AND SWITCHGEAR CIRCUIT
BREAKERS DISTRIBUTING POWER TO AND FROM THE CONVERTER,
AND THEN REMOVING THE INPUT SERVICE.
SERVICE SHOULD BE REFERRED TO PERSONNEL AUTHORIZED BY
THE FACTORY TO SERVICE THIS EQUIPMENT.

AC15QTP And AC20QTP Operations Manual....8
3 INTRODUCTION TO THE AC15QTP AND AC20QTP
These models are high performance Yacht Power Converters utilizing two stage switching
technology. These converters will accept any single phase input service with a frequency
between 40-70 Hertz, and a voltage between 170-520VAC. Input service may consist of a single
63A or 100A shore power input, or two 32A or 50A shore power inputs. When operated from
two shore power inputs, the two shore inputs cords must be of a like voltage form; the converter
may be operated from two shore power inputs protected by GFI/RCD type circuit breakers.
When operated from a single shore power input, the SHORE POWER 1 INPUT must be used.
The output power form has been programmed at the factory for the power form, voltage, and
frequency, required by the yacht’s electrical system.
Two stage switching technology is the preferred technique for AC - AC power conversion, and
was chosen for these systems. In this technology, the shore power service is isolated by
transformers then converted to DC power by an active Power Factor Correction (PFC) in the first
stage. The second stage is inverters the converted DC power back to the required AC form (both
voltage and frequency) required by the yacht.
FIGURE 1: BLOCK DIAGRAM

AC15QTP And AC20QTP Operations Manual....9
3 INTRODUCTION TO THE AC15QTP AND AC20QTP, cont.
Being converters designed from the ground up specifically for the yachting industry, all efforts
have been made to produce a system capable of withstanding the marine environment. The
system is constructed using a modular approach where the converter consists of a control module
(upper), two power modules (lower), and a transformer module in a separate enclosure. This
allows the converter to be broken down into four parts to facilitate its movement into a vessel
through existing personnel entry points. All system components are packaged in drip-proof,
dust-resistant, aluminum chassis. Major components are internally modular, allowing a simple
exchange in the unlikely event of failure. Maintenance and service are performed through top
access to the upper control module, exchange of power modules, and front/top access to the
transformer module.
Fan speed control is provided. Internal cooling fans will run at full rpm when the converter is at
full load, and minimal speed while unloaded.
System operation is managed through two basic operators:
1. A safety disconnect on the front of the enclosure is used for securing input service during
periods of disuse, when maintenance and/or service is in-process, or when an emergency
shutdown is needed.
2. Three membrane switch groups in the control console—SHORE POWER,
CONVERTER POWER, and SHIP’S POWER—provide normal operation of the system.
Each switch group contains an ON and OFF switch with associated LED indicators.
In addition to the basic function of power conversion, the converter provides the user with a
sophisticated power analysis and monitoring capacity. All parameters for input and output
power, along with operations and status information, are available on the front panel display
console. Various displays are selected through a long life, sealed membrane switch panel.
For additional information on controls and indicators, please refer to Section 6.

AC15QTP And AC20QTP Operations Manual....10
4 SPECIFICATIONS
4.1 ELECTRICAL SPECIFICATIONS
4.1.1 Input Service
Table 1: Input Specifications
Parameter
AC15QTP
AC20QTP
Input Power Form
Single Phase
Single or dual shore power inputs
Single Phase
Single or dual shore power inputs
Input Voltage Range
170-520 VRMS
170-520 VRMS
Input Frequency Range
40-70 Hertz
40-70 Hertz
Input Current, Max.
2 x 31 ARMS
1 x 63 ARMS
2 x 42 ARMS
1 x 83 ARMS
Max. Soft-Start Input Current
24 ARMS
24 ARMS
Input Current Distortion
<5% THD @ rated load
<5% THD @ rated load
Input Power Factor
>0.99 @ rated load
>0.99 @ rated load
4.1.2 Output Service
Table 2: Output Specifications
Parameter
AC15QTP
AC20QTP
Output Power Rating
15kVA @ 0.85 p.f.
20kVA @ 0.85 p.f.
Output Power Form
Single Phase 220, 230, or 240 VRMS,
Split Phase 110/220 VRMS, 115/230 VRMS, or 120/240 VRMS
Output Frequency
50 or 60 Hertz
50 or 60 Hertz
Output Frequency Accuracy
0.01%
0.01%
Output Voltage Distortion
< 1.5% THD
< 1.5% THD
Output Voltage Line Regulation
0.50%
0.50%
Output Voltage Load Regulation
1.0%
1.0%
Output Voltage Response Time
0.20 msec
0.20 msec
Continuous Output Current
Refer to Table 3 on the following page for basic ratings.
Peak Output Current
700% of cont. rating
540% of cont. rating
Surge Output Current
500% of cont. rating
380% of cont. rating
Conversion Efficiency
88% @ rated load
88% @ rated load

AC15QTP And AC20QTP Operations Manual....11
4 SPECIFICATIONS, cont.
4.1 ELECTRICAL SPECIFICATIONS, cont.
4.1.2 Output Service, cont.
Table 3: Output Current, Rated Continuous RMS
Output Form
AC15QTP
AC20QTP
1Ø, 220VRMS
68ARMS/Ø
91ARMS/Ø
1Ø, 230VRMS
65ARMS/Ø
87ARMS/Ø
1Ø, 240VRMS
63ARMS/Ø
83ARMS/Ø
1Ø, 110/220VRMS
68ARMS/Ø
91ARMS/Ø
1Ø, 115/230VRMS
65ARMS/Ø
87ARMS/Ø
1Ø, 120/240VRMS
63ARMS/Ø
83ARMS/Ø

AC15QTP And AC20QTP Operations Manual....12
4 SPECIFICATIONS, cont.
4.1 ELECTRICAL SPECIFICATIONS, cont.
4.1.3 Control, Metering, and Status
Input Power Control Input Service Disconnect Switch, 2 pos.
Shore Power Control Membrane Switch, Input ON/OFF Control
Converter Power Control Membrane Switch, Output ON/OFF Control
Ship’s Power Control Membrane Switch, Generator/Converter Power
Transfer Control
Shore Power Metering Voltage, Current, Frequency, kVA, kW, %Load
Converter Power Metering Voltage, Current, Frequency, kVA, kW, %Load
Generator Power Metering Generator 1 - 4, Voltage, Frequency
System Status Operational status, Diagnostics, Software Calibration
4.2 PHYSICAL SPECIFICATIONS
4.2.1 Mechanical
Table 4: Physical Dimensions
Parameter
AC15QTP
AC20QTP
Module 1
Module 2
Module 1
Module 2
Height
20.34" / 51.7 cm
20.34" / 51.7 cm
20.34" / 51.7 cm
20.34" / 51.7 cm
Width
13.75" / 34.9 cm
13.75" / 34.9 cm
13.75" / 34.9 cm
13.75" / 34.9 cm
Depth
26.35" / 66.9 cm
26.35" /66.9 cm
26.35" / 66.9 cm
26.35" / 66.9 cm
Weight
140 lbs / 63.6 kg
236 lbs / 107.3 kg
140 lbs / 63.6 kg
236 lbs / 107.3 kg
4.2.2 Environmental
Ambient TemperatureRange 0-50 C non-condensing
Air Exchange Rate 600 CFM (ft3/min) / 1360 m3/hour

AC15QTP And AC20QTP Operations Manual....13
5 INSTALLATION
The installation section is divided into two parts: the first will cover mechanical installation, the
second, electrical installation.
Read this manual thoroughly prior to attempting the installation. Improper installation is the
most significant cause of system start-up problems and service issues over the product’s life.
Upon receipt of the equipment, perform an external visual inspection. Verify that nameplate
information is consistent with the ship’s power requirements (required form, voltage, and
frequency).
Proper planning will speed up installation, location, and connection of the equipment. Follow
the suggested minimum clearances provided in Table 2.
Ensure the room/compartment has adequate ventilation and cooling. The thermal load
presented by AC15QTP will be approximately 6,650 BTU/Hr at maximum continuous load,
and the AC20QTP will be approximately 8,670 BTU/Hr at maximum continuous load.
THE CONVERTERS WEIGH UP TO 340lbs. (154kg) DEPENDING UPON
MODEL AND INSTALLED OPTIONS. EXTREME CAUTION MUST BE
EXERCISED IN HANDLING AND INSTALLATION TO AVOID EQUIPMENT
DAMAGE OR INJURY TO PERSONNEL. AN ADEQUATE MATERIAL
HANDLING DEVICE SHOULD BE USED FOR UNLOADING, MOVING, AND
POSITIONING THE SYSTEM.

AC15QTP And AC20QTP Operations Manual....14
5.1 MECHANICAL INSTALLATION
The converter is designed for deck mount installations and as such is provided with eight
mounting holes, four per side. Mounting holes have been provided with 0.42" (10.75 mm)
diameters; stainless steel hardware in the range of 1/4" to 5/16" (9 - 10 mm) diameter is required.
The mounting surface should be flat and dimensionally stable to within 1/16" (1.5 mm) to
prevent torsional stresses being applied to the structure of the converter. Spacers (shim stock)
may be added between the mounting surface and the converter mounting flanges to adjust the
mounting plane. If the system is to be mounted in a high vibration/shock environment the
factory must be consulted concerning the application. Drawings for approved shock mounting
assemblies will be supplied.
The following recommended clearances must be considered during installation for proper
operation:
Table 5: Recommended Installation Clearances
Parameters
Proper Operation
Proper Service
Front
18" (Exhaust Airflow)
24" min.
Sides
0"
0"
Top (Excluding Keypad)
0"
14"
Rear
5" (Intake Airflow)
6"
Air intake grillwork is provided at the rear of the equipment. Please contact factory engineers
for review of the installation plan if unsure on any specification or requirement. Complete
installation drawings, both electrical and mechanical, will be supplied upon request. Please
contact the factory before attempting to disassemble the converter into its constituent parts.

AC15QTP And AC20QTP Operations Manual....15
5.1 MECHANICAL INSTALLATION, cont.
DO NOT UNDER ANY CIRCUMSTANCES USE ANY HARDWARE OTHER
THAN THE ORIGINAL HARDWARE SUPPLIED BY ASEA POWER SYSTEMS
TO CONNECT THE VARIOUS MODULES TOGETHER. LONGER SCREWS
WILL DAMAGE INTERNAL COMPONENTS CATASTROPHICALLY!

AC15QTP And AC20QTP Operations Manual....16
5.1 MECHANICAL INSTALLATION, cont.
FIGURE 2: MECHANICAL OUTLINE
FIGURE 3: MOUNTING

AC15QTP And AC20QTP Operations Manual....17
5.2 ELECTRICAL INSTALLATION
This procedure assumes the physical installation of the converter has been completed.
It is the installer’s responsibility to provide input service over-current protection and a
disconnect means.
It is recommended that connection be made to the distribution bus through a manually operated
disconnect device such as a molded case switch or circuit breaker (rated for the total system
amperage) to ease disconnection and provide a safe servicing environment in the event of
converter failure.
Follow the table below for shore power wiring.
Table 6: Input Service Over-Current Protection Specifications
Maximum Currents Under Low-Line Conditions
Input Current
AC15QTP
AC20QTP
Single Phase, 170-290V
72A
96A
Three Phase, 170-520V
38A
50A
Output Current
Refer to Table 3
The installation of power wiring requires the removal of the front panel, the opening of the
hinged soft-start panel (just behind the front panel at the converter base), and the removal of the
cable entry cover. The cable entry cover is secured with 3 ea. #10-32 x ½" stainless steel screws.
Drill or punch the appropriate holes in the cable entry cover for the selected cable strain reliefs.
Re-install the input service panel using the removed hardware. Place the disconnect switch in
the OFF position before proceeding.

AC15QTP And AC20QTP Operations Manual....18
5.2 ELECTRICAL INSTALLATION, cont.
INPUT WIRING MUST BE PERFORMED BY A QUALIFIED ELECTRICIAN
FAMILIAR WITH STANDARD SAFEGUARDS AND PROCEDURES
REQUIRED BY THE INSTALLATION OF THIS TYPE OF EQUIPMENT.
POWER MUST BE REMOVED FROM THE INPUT DISTRIBUTION SYSTEMS
SUPPLYING POWER TO THE AC15QTP OR AC20QTP PRIOR TO THE
START OF THE FOLLOWING STEPS. INPUT POWER MUST BE SECURED
(LOCKED) IN THE OFF (DE-ENERGIZED) STATE UNTIL INSTRUCTED
OTHERWISE BY THIS DOCUMENT. ALSO SECURE IN THE OFF STATE
ANY CIRCUIT BREAKER(S) IN THE SWITCHGEAR PANEL THAT MAY BE
SUPPLYING SHIP’S BUS POWER TO THE CONVERTER OUTPUT
TERMINAL BLOCK. FAILURE TO FOLLOW THESE PROCEDURES CAN
RESULT IN DAMAGE TO THE EQUIPMENT, AND CAN PRESENT THE RISK
OF INJURY OR DEATH TO THE INSTALLER OR THE OPERATOR.
5.2.1 Input Power Connections
The converter is supplied with compression type terminal blocks for input power connections
(SHORE POWER). These terminal blocks accept wires in the range of 8 to 2/0 AWG. Refer to
the applicable class standard for selection of required wire gauge and type. Please refer to Figure
4 for more information.
If only a single shore power input is to be used, it must be connected the SHORE POWER 1
INPUT terminal block. The SHORE POWER 1 and SHORE POWER 2 inputs are fully isolated
and have no phase orientation requirements if dual shore power inputs are used.

AC15QTP And AC20QTP Operations Manual....19
5.2 ELECTRICAL INSTALLATION, cont.
5.2.2 Output Power Connections
Each system is supplied with compression type terminal blocks for output power connections
(CONVERTER POWER). These terminal blocks accept wires in the range of 8 to 2/0 AWG.
Refer to the applicable class standard for selection of the required wire gauge and type.
Single-phase output configured systems (e.g. 220VAC): connect between the L1 and L2 output
terminals. When grounding this output power form, the L2 terminal must be used. Split-phase
output configured systems (e.g. 120/240VAC): use the L1, N (neutral), and L2 output terminals.
When grounding this output power form, the N (neutral) terminal must be used.
5.2.3 Grounding
The converter chassis ground MUST be connected to the ship’s hull or common ground point via
the ground stud terminal located between the input and output power connections. Failure to do
so may create conditions that may in turn cause injury or death to operators; failure to do so will
also result in the voiding of the equipment warranty. In the case of paralleled converter systems,
and where such ground connections are not local and directly adjacent to the paralleled
converters, the chassis ground connections must be interconnected between the paralleled
converters as well as connected to the remote ship’s common ground point.
THE CONVERTER ISOLATES THE OUTPUT POWER FROM THE INPUT
POWER AND EQUIPMENT (SAFETY) GROUNDS SIMILAR TO AN
ISOLATION TRANSFORMER. THE INSTALLER MUST RE-ESTABLISH THE
GROUND REFERENCE FOR THE EQUIPMENT AT TIME OF
INSTALLATION. THE NEUTRAL AND EQUIPMENT (SAFETY) GROUNDS
MUST TO BE CONNECTED PER THE APPROPRIATE CLASS STANDARD.

AC15QTP And AC20QTP Operations Manual....20
5.2 ELECTRICAL INSTALLATION, cont.
5.2.4 Cable Preparation
Prepare the power cables by removing approximately 6” of the outer cable insulation (in the case
of SO type portable cables). Strip the insulation back exposing 1/2” of the bare conductor for all
input, output, and grounding conductors. Insert the prepared cables and strain relief assemblies
into the prepared holes in the cable access cover. Insert the wire ends into the appropriate
input/output terminal block and tighten. Replace the power cable access cover and front panel
using the removed hardware.
FIGURE 4: MODULE POWER CABLE CONNECTION