Lamarche ITSM User manual

106 Bradrock Dr. Des Plaines, IL 60018-1967 CPN 137588 Instr ction Drawing N mber: P25-LITSM-1
Tel: [phone] Fax: [phone] Revision A00 Rev. Date: ECN: 21619
La Marche Man fact ring Company
www.lamarchemfg.com
ITSM
ITSMITSM
ITSM
Isolation Transformer
for Marine Applications
Installation and Operation Man al

i
Important Safety Instructions
Before sing this eq ipment read all man als and other doc ments related to this nit and other eq ipment
connected to this nit. Always have a copy of a nits man al on file nearby, in a safe place; if a replacement
copy of a man al is needed it can be fo nd at the www.lamarchemfg.com.
Electrical Safety
WARNING:
Hazardo s Voltages are present at the inp t and o tp t of power systems.
When working with any live power system, follow these preca tions:
•Never work alone on any live power system, someone sho ld always be close eno gh to come to yo r aid
•Remove personal metal items s ch as rings, bracelets, necklaces, and watches.
•Wear complete eye protection (with side shields) and clothing protection.
•Always wear gloves and se ins lated hand tools.
WARNING: Lethal Voltages are present within the power system. Parts inside the nit may still be
energized even when the nit has been disconnected from the AC inp t power. Check with a meter
before proceeding. Do not to ch any nins lated parts.
•A licensed electrician sho ld be sed in the installation of any nit.
•Always disconnect the nit from the s pply, batteries and loads before performing maintenance or cleaning.
•If the nit is hot-swappable, simply remove it from the shelf for any maintenance or cleaning.
•Always ass me that an electrical connection is live and check the connection relative to gro nd.
•Be s re that neither liq ids nor any wet material come in contact with any internal components.
•Do not operate this nit o tside the inp t and o tp t ratings listed on the nit nameplate.
•Do not se this nit for any p rpose not described in the operation man al.
Mechanical Safety
•This nit or parts of the nit may get very hot d ring normal operation, se care when working nearby.
•Do not expose eq ipment to rain or snow. Always install in a clean, dry location.
•Do not operate eq ipment if it has received a sharp blow, been dropped, or otherwise damaged in any way.
•Do not disassemble this nit. Incorrect re-assembly may res lt in a risk of electric shock or fire.
Unit Location
•Allow at least 6 inches of free air on all vented s rfaces for proper cooling.
•Allow s fficient clearance to open the front panel for servicing.
•Do not operate this nit in a closed-in area or restrict ventilation in any way.
Check for amages
Prior to npacking the prod ct, note any damage to the shipping container. Unpack the prod ct and inspect the
exterior of prod ct for damage. If any damage is observed, contact the carrier immediately. Contin e the
inspection for any internal damage. In the nlikely event of internal damage, please inform the carrier and
contact La Marche for advice on the risk d e to any damage before installing the prod ct. Verify that yo have
all the necessary parts per yo r order for proper assembly.

ii
CAUTION: Fail re to properly file a claim for shipping damages, or provide a copy of the claim to La
Marche, may void warranty service for any physical damages reported for repair.
Returns for Service
Save the original shipping container. If the prod ct needs to be ret rned for service, it sho ld be packaged in its
original shipping container. If the original container is damaged/ navailable, make s re the prod ct is packed
with at least three inches of shock-absorbing material to prevent shipping damage. La Marche is not
responsible for damage ca sed by improper packaging of ret rned prod cts.
Inspection Checklist
 Enclos re exterior and interior is not marred or dented.
 There is no visible damage components.
 All internal components are sec re.
 All hardware and connections are tight.
 All wire terminations are sec re.
 All items on packing list have been incl ded.
Handling
Eq ipment can be very heavy and/or top heavy. Use adeq ate manpower or eq ipment for handling. Until the
eq ipment is sec rely mo nted, care m st be sed to prevent the eq ipment from being accidentally tipped
over.

iii
Table of Contents
Important Safety Instr ctions ................................................................................................................... i
Electrical Safety ................................................................................................................................... i
Mechanical Safety ................................................................................................................................ i
Unit Location ....................................................................................................................................... i
Check for Damages .............................................................................................................................. i
Ret rns for Service .............................................................................................................................. ii
Handling ............................................................................................................................................. ii
Table of Contents ................................................................................................................................... iii
ITSM General Description ........................................................................................................................ 1
Understanding the Model N mber ............................................................................................................ 2
Optional Accessories Incl ded in the Unit .............................................................................................. 2
Storing the ITSM .................................................................................................................................... 3
Mo nting the ITSM ................................................................................................................................. 3
Floor-Mo nting the ITSM ..................................................................................................................... 3
Changing Transformer Taps Proced re ..................................................................................................... 4
Making the AC Inp t/O tp t Connections .................................................................................................. 5
AC Inp t Connection Proced re ............................................................................................................ 6
AC O tp t Connection Proced re .......................................................................................................... 6
Appendix A: Man fact rer’s Standard Warranty ......................................................................................... 7
Appendix B: Man fact rer’s Extended Parts Warranty ................................................................................. 8
Appendix C: Doc ment Control and Revision History ................................................................................... 9

1
ITSM General escription
The La Marche Marine Isolation Transformer Series (ITSM) is designed for installation in marine and harsh
environment applications where reliable power is req ired. The transformers are designed per UL safety
req irements and man fact red sing ins lated copper windings with Class H ins lation system. The La Marche
ITSM transformers are specifically engineered to operate at f ll load and f ll harmonic rating providing years of
tro ble free service.
The f nction of the La Marche Marine Isolation Transformer is to red ce the potential between the ship and the
shore in order to achieve:
•Personnel boarding the ship, personnel aboard the ship and the ship’s metal parts will not be s bject to
electrical shock
•Electrolysis corrosion of the metal h ll or h ll fastenings will be red ced to a safe level
•Red ce EMI interference and static from affecting the ship’s electronic components
The La Marche Marine Isolation Transformer feat res a Gro nd (Faraday) Shield between the power windings.
This gro nd shield, when connected to the shore gro nd, provides protection against capacitive co pling
between the shore power and the ship’s electrical systems. This protects the ship electrical eq ipment against
shore power iss es, common mode voltage spikes, and the transfer of harmf l energy between both systems.
Wiring iagram
120/240/208 VAC inp t
120/240/208 VAC o tp t
No optional accessories

2
Understanding the Model Number
The ITSM model is coded to describe the options that are incl ded. Find the model n mber on the
nomenclat re nameplate of the isolation transformer. Then follow the chart to determine the config ration of
yo r isolation transformer.
* AC Voltage Codes: A – 120V, B – 240V, C – 480V, D – 208V, L – 220V, ZD – 600V
Optional Accessories Included in the Unit
This nit may have been o tfitted with a n mber of optional accessories or option packages. To find o t what
options this nit has (if any) refer to the very first page of the man al package.

3
Storing the ITSM
If the ITSM is to be stored for more than a few days after delivery, it sho ld be stored within its shipping
container. The location chosen for storage sho ld be within an ambient temperat re of -40 to 185° F (-40 to
85° C) with a non-condensing relative h midity of 0 to 95%.
Mounting the ITSM
When mo nting the ITSM, consider the size and weight of the nit. The floor m st be able to s pport the
weight of the nit as well as an additional safety factor. The location chosen for the ITSM sho ld be within an
ambient temperat re range of 32 to 122°F (0 to 50°C) with a non-condensing relative h midity no higher than
95%. The ITSM sho ld be mo nted in an area free of explosive materials and away from drips and splatter. The
ITSM tilizes convection cooling so a clearance of at least 6in (152mm) of free air m st be maintained on the
top, bottom, back and both sides for cooling air. Maintain 36in (914mm) or more of clearance at the front of the
nit in order to allow for operation and maintenance.
Case number
Cable Entry
Mounting
AC input AC Output
108 Top Right Top Left Floor
Floor-Mounting the ITSM
Floor mo nting the 108 cases is standard. To floor-mo nt the ITSM, install fo r bolts into the floor. Place the
ITSM on the bolts, add appropriate mo nting hardware, and tighten sec rely. The fig re below shows the
footprint and the bolt size of each ITSM case style. (All dimensions are in inches)
Case
number
im.
A
im.
B
Bolt
Size
108 18.288 11 3/8

4
Changing Transformer Taps Procedure
NOTE: This proced re refers only to ITSM Isolation Transformers that accept m ltiple inp t or m ltiple o tp t
voltages. Single inp t and o tp t Isolation Transformers do not incl de taps.
Before wiring AC power, check the taps, to be s re the Isolation Transformer is set for the correct AC inp t and
o tp t voltage. Before changing the taps, be s re that AC s pply is t rned off and locked o t. Verify that no
voltage is present by sing a voltmeter at all inp t and o tp t terminals.
Change the connections to the inp t and o tp t terminals for transformers with 120/240/208 VAC inp t and
120/240/208 VAC o tp t as shown:
120 VAC Input Voltage
a. Connect j mper JP1 from pin 1 to pin 3 of TB1 terminal
b. Connect j mper JP2 from pin 2 to pin 5 of TB1 terminal
c. Connect power line L1 to pin 1 of TB1 terminal
d. Connect power line L2 (Ne tral) to pin 5 of TB1 terminal
208 VAC Input Voltage
a. Connect j mper JP1 from pin 2 to pin 3 of TB1 terminal
b. Connect j mper JP2 from pin 2 to pin 3 of TB1 terminal
c. Connect power line L1 to pin 1 of TB1 terminal
d. Connect power line L2 to pin 4 of TB1 terminal
240 VAC Input Voltage
a. Connect j mper JP1 from pin 2 to pin 3 of TB1 terminal
b. Connect j mper JP2 from pin 2 to pin 3 of TB1 terminal
c. Connect power line L1 to pin 1 of TB1 terminal
d. Connect power line L2 to pin 5 of TB1 terminal
120 VAC Output Voltage
a. Connect j mper JP3 from pin X1 to pin X3 of TB2 terminal
b. Connect j mper JP4 from pin X2 to pin X5 of TB2 terminal
c. Connect eq ipment line L1 to pin X1 of TB2 terminal
d. Connect eq ipment line L2 (Ne tral) to pin X5 of TB2
terminal
208 VAC Output Voltage
a. Connect j mper JP3 from pin X2 to pin X3 of TB2 terminal
b. Connect j mper JP4 from pin X2 to pin X3 of TB2 terminal
c. Connect eq ipment line L1 to pin X1 of TB2 terminal
d. Connect eq ipment line L2 to pin X4 of TB2 terminal
240 VAC Output Voltage
a. Connect j mper JP3 from pin X2 to pin X3 of TB2 terminal
b. Connect j mper JP4 from pin X2 to pin X3 of TB2 terminal
c. Connect eq ipment line L1 to pin X1 of TB2 terminal
d. Connect eq ipment line L2 to pin X5 of TB2 terminal

5
Making the AC Input/Output Connections
Before making any connections to the Isolation Transformer ens re that the AC Power is off at the main
breaker box. Check that the so rce voltage and freq ency matches the voltage and freq ency listed on the
nit’s nameplate. For nits with transformer taps, verify that the tap has been set to the correct AC inp t. (See
Changing Transformer Taps proced re for details). Select wire size, sing the table below, based on the inp t
protection. These are recommended sizes. All National and Local Wiring Codes m st be followed.
NOTE: For transformers with 120/240/208 VAC inp t:
• 120 VAC inp t arrangement has inp t f ses or breaker poles wired in parallel
o Example: ACF1 = 70 amp, ACF2 = 70 amp. Inp t protection = 140 amps.
• 240/208 VAC inp t arrangement has inp t f ses or breaker poles wired in series
o Example: ACF1 = 70 amp, ACF2 = 70 amp. Inp t protection = 70 amps.

6
AC Input Connection Procedure
First connect a shore gro nd lead (for sizing se table on page 4) to the pin marked 6 on the terminal block
TB1. Then connect the ship gro nd lead to the pin marked with a GROUN symbol on the terminal block TB1.
Enclos re’s st d located by the inp t terminal block may also be sed for connecting the ship gro nd lead. R n
the inp t AC power wiring to terminals marked 1, 4 or 5 (depending on the inp t voltage) on the terminal block
TB1.
AC Output Connection Procedure
R n the eq ipment AC wiring to terminals marked X1, X4 or X5 (depending on the o tp t voltage) on the
terminal block TB2.