5701 S M IT H W A Y ST R E E T • C O M M E R C E , C A 9 0 0 40
(323) 726-0 8 8 8 • (800) 423-4366 • F A X (3 2 3 ) 7 2 6 -8224
w w w .m g m tr an sfor m e r.co m
GENERAL PURPOSE DRY - TYPE
DISTRIBUTION TRANSFORMER
INSTALLATION, OPERATION, AND
MAINTENANCE MANUAL
MGM 100-10A-04-2018
MGM 100
-
10A
WARNING
Electrical potentials hazardous to human life can exist within this equipment when it is
energized. Disconnect all input power before opening the case or touching the internal
parts
The information contained herein may not cover all variations in equipment supplied or
provide for all contingencies that might arise during the installation, operation or
maintenance for this equipment. If there is any question regarding the above items,
contact your supplier.
IT IS E
BY Q
XPECTED THAT ANY INSTALLATION OR MAINTENANCE WILL BE PERFORMED
UALIFIED PERSONNEL ACCORDING TO LOCAL
, S
TATE
, A
ND NATIONAL CODES
.
MGM 100
-
10A
Table of contents
General ...................................................................................................................... 3
Inspection upon Receipt ............................................................................................. 3
Handling ..................................................................................................................... 3
Storage ....................................................................................................................... 3
Installation Location .................................................................................................... 3
Room Requirements ................................................................................................... 3
Connections ............................................................................................................... 4
Grounding .................................................................................................................. 4
Reverse Feed or Step-up Operation ........................................................................... 4
Reducing Sound Levels .............................................................................................. 4
Prior To Energizing ..................................................................................................... 5
Maintenance ............................................................................................................... 5
Lighting Tap Applications ........................................................................................... 5
Dielectric Insulation .................................................................................................... 5
Ambient Temperature ................................................................................................. 5
Altitude ....................................................................................................................... 6
Single Phase Three Wire Operation ........................................................................... 6
References ................................................................................................................. 6
When you need Service ............................................................................................. 6
Terms and Conditions ................................................................................................ 6
Appendix A - Seismic Kit Installation Instructions (cases A, B, B+, C, C+)
Appendix B - Seismic Kit Installation Instructions (cases D & E)
Appendix C - Wall Mount Bracket Installation Instructions
Appendix D - Weatherproof Kit Installation Instructions
Appendix E - Rodent / Bird Screen Kit Installation Instructions
MGM 100-10A
3
General
Read the entire manual before attempting to perform
installation of this transformer. Dry type transformers are
suitable for indoor or outdoor use depending upon the
construction of the enclosure as well as the ability to
protect the transformer from unwarranted access to live
parts. They are cooled by the free circulation of air
through the enclosures, the average ambient
temperature over 24 hours should not exceed 30° C
(86°F), the maximum ambient temperature should not
exceed 40° C (104°F) or as otherwise specified in the
specification. Overheating may occur if the air flow is
restricted, the transformer is overloaded, it is supplied with
over or under voltage, or operated at other than rated
frequency.
Inspection upon Receipt
Units are shipped in upright position and should arrive that
way. Upon arrival, all units should be inspected for
damage during shipment. Unpack and examine for
broken or loose parts. Careful inspection should be
made of transformer coils, wiring and insulators. What
appears to be minor damage in these areas may result in
an open or short circuit. Claims for damage should be
filed with the transportation company and an MGM
Transformer Company representative must be notified
immediately. For superficial or minor case part damage,
spare parts may be available, contact an MGM
Transformer Company representative.
Handling
Lifting with hand trucks or fork lift trucks is permissible if the
blades or forks are long enough to pass completely under
the case. Since most general purpose transformers have
a high center of gravity, extreme caution should be
exercised when lifting or moving the units.
If it is necessary to move ventilated dry-type transformers
during inclement weather then they should be thoroughly
protected against the entrance of moisture.
Storage
Storage areas should be as clean and dry as possible
without extreme temperature variations. Protective
wrappings should be left intact until the transformer is
moved to its permanent location. Dry type transformers
stored under extremely wet or dusty conditions must
have cleaning and drying operations performed before the
unit can be energized. (See Maintenance Section.)
Installation Location
Factors to be kept in mind when choosing a location for
dry type transformers are: accessibility, ventilation,
environmental conditions, and noise (see ‘Reducing
Sound Levels’). Installation should be made in an area
reasonably free from dust, excessive moisture,
fertilizers, chemicals and other corrosive fumes or
vapors and separated from flammable materials in
accordance with the NEC.
General purpose dry type transformers up to case GPC+ are
supplied in dual rated enclosures suitable for indoor/outdoor
installation and eliminates the need of a weather shield kit.
Weather shield kits are for cases GPD and GPE which are
available to convert these enclosures for UL listed outdoor
NEMA 3R use. The appropriate kit can be obtained from
a MGM Transformer representative. Even with a
properly attached weathershield kit, no transformer
should be hosed off, or placed in the catchment area of a
water sprinkler. Wall-mount brackets are also available
for units up to 75 KVA.
In all locations dry type transformers must be installed in
the upright position in an area with free air
circulation. Check NEC codes for minimum required
clearances from adjacent structures. Fencing in the
transformer to prevent unauthorized access is strongly
recommended.
Room Requirements
Dry-type transformers located indoors should comply
with the application requirements of NEC.
The room in which dry-type transformers are located
should be sized to permit locating transformers with
sufficient spacing between units and sufficient
clearances to walls and other obstructions (as
specified per NEC or as indicated below nameplate) to
permit air circulation. Sufficient space should also be
provided to permit routine inspection and maintenance.
Adequate ventilation is essential for the proper cooling of
transformers. Clean, dry air is desirable. Filtered air at or
above atmospheric pressure may reduce maintenance
if dust or other contaminants present a particular
problem. When transformers are located in rooms or
other restricted spaces, sufficient ventilation should be
provided to hold the air temperature within established
limits when measured near the transformer inlets. This
will usually require approximately 100 ft3/min of air per
kilowatt of transformer loss. The area of ventilating
opening required depends upon the height of the room,
the location of openings, and the maximum loads to
be carried by the transformer. Room ventilation should
not impede normal circulation of air through the
transformer.
When possible, the air inlet to the room should be near the
floor with the outlet in the opposite upper end of the room.
The exhausting air should not exceed 15°C over the inlet
air temperature. When necessary, forced air exhaust should
be used to maintain this maximum differential.
FOR ADDITIONAL INFORMATION VISIT US ONLINE AT WWW.MGMTRANSFORMER.COM
BOLT
TYP TOL
ALUM
SIL BRONZE
STEEL
Connections
Cautions: Make only those connections shown on the
nameplate or connection diagram. Before energizing,
check all tap jumpers for proper locations, and all bolted
connections for tightness. All three sets of taps on a
three phase transformer must be connected in the same
location for each phase. For instructions on how to read
nameplates and connection diagrams, please visit the
documentation section of our website at:
http://www.mgmtransformer.com .
All transformers, with bottom connections are designed for
easy accommodation of cable sizes in accordance with
NEC. Cables which will carry less than 100 amperes may
have a 60° C temperature rating or higher, and
cables which will carry 100 amperes or more must have a
75° C temperature rating or higher. All cables should be
in the lower part of the transformer enclosure in
accordance with markings on the enclosure.
Use 90° C cable sized to 75° C ampacity for the
units having terminals located above the coils. After
the first thirty days of service, re-tighten all connecting
lugs and bolts. Depending on the kVA rating, the
transformer may have flexible leads with bolted type
wire terminals, copper/aluminum (CU/AL) lug connectors,
or simply termination pads for mounting your own
crimp or lug type terminations. The table below shows
required torque for installing bolted wire connectors and
cables in lug type connectors.
SIZE
1/4-20 +/- 20% 50 4 60 5 75 6
5/16-18 +/- 20% 85 7 110 9 135 11
3/8-16 +/-20 % 145 12 195 16 240 20
1/2-13 +/-15 % 300 25 420 35 540 45
5/8-11 +/-15 % 480 40 840 70 1080 90
3/4-10 +/-15 % 720 60 1200 100 1560 130
NOTES:
1. Always use two wrenches when tightening or loosening
bolted connections to prevent damage.
2. Tighten, wait several seconds, then re-tighten all
connecting lugs and bolts.
Minimum electrical clearances in the installation of lugs
and cables must be per ANSI and NEMA Standards. All
electrical clearances that are questionable must be
insulated for the applied voltage. Particular care should
be taken with shielded cables, so that the ground termination of the cables has sufficient clearance from all the
manufacturers installed live parts, including parts that
appear to be insulated.
+/- NOM
In-
Lbs
Ft-
Lbs
In-
Lbs
Ft-
Lbs
In-
Lbs
FOR ADDITIONAL INFORMATION VISIT US ONLINE AT WWW.MGMTRANSFORMER.COM
Ft-
Lbs
MGM 100-10A
Grounding
It is the responsibility of the installer to ground the
transformer enclosure assembly to the ground system in
accordance with the latest revision of the NEC Section
450-10, NEC Article 250 and ANSI/IEEE Std. 144.
Reverse Feed or Step-up Operation
Step-down transformers may be reverse fed for step-up
operation to increase voltage. This means that the incoming
power is connected to the low voltage (X’s) and the load is
connected to the high voltage (H’s). If the low voltage is wye,
the X0 terminal must NOT be connected in any way.
Likewise, if the low voltage is a delta with a 120 volt lighting
tap (high-leg), the X4 terminal must NOT be connected in
any way.
CAUTION: Much higher than normal inrush currents may
occur with reverse feed operation and may cause nuisance
fuse blowing or breaker tripping. For this reason, fuses and
breakers with time-delay characteristics must be used.
If a breaker is used for incoming over-current protection, it
must be a thermal-magnetic type breaker, not a magneticonly type breaker.
Tap Settings are for the high voltage side and when reverse
fed the ability to adjust voltages is no longer available. This
means some performance parameters may be affected.
Reducing Sound Levels
Transformer noise originates within the steel core. It is
an inherent characteristic of all transformers and cannot
be completely eliminated. Therefore, care should be
exercised in the selection of the transformer location,
particularly in buildings where the ambient sound level is
quite low. A transformer's sound level is quite often
unintentionally amplified by improper installation, which
makes the transformer appear to be considerably louder
than it actually is. Transformer sound levels are
amplified by sound waves in the air being reflected from
surrounding objects and resonance of mounting
construction and electrical connections. This situation
should be avoided wherever possible. Trans forme rs
should be c onn ected f or and en ergiz ed at r at ed
volta ge and fr equency at n o loa d t o de termi ne the
corre ct noise l evel. Transformer sound level
problems can also be further minimized by following
these installation suggestions:
1. The case may be installed on vibration mounts for
additional reduction of sound levels.
2. Flexible conduit couplings should be used to reduce
vibration transfer from the case to the incoming and
outgoing conduit.
3. The installation should be in an area where the
sound will be least objectionable.
4. Avoid stairway and hall areas or reflecting objects
which resonate or echo. Concrete or masonry walls,
floors and ceilings are excellent sounding boards. If
these and other reflecting surfaces cannot be
avoided, acoustic absorbing materials should be
used to cover them.
4
5. Mounting the transformer on walls, balconies or
floors which have relatively light mass should also
be avoided. The possibility of amplifying the sound
waves in the structure will be greatly reduced if the
weight of the mounting surface corresponding to the
projected area of the transformer is equal to, or
greater than the weight of the transformer. Surfaces
which may distort or strain the transformer case
should be leveled or squared before installation.
6. Shrubbery can be planted near the unit on outdoor
installations to break up the sound pattern. Make
sure all sprinklers are aimed away from the
transformer.
7. Incoming line over-voltage is higher than tap setting.
Change the tap settings according to the incoming line
voltage.
8. Transformer installed too close to other noise generating
transformers. Check adjacent transformers and isolate
with acoustical barriers.
9. Loose parts of transformer enclosure, such as panels or
loose bolts. Check panels and parts and tighten loose
bolts and nuts.
10. Loose parts on core & coils that may have dislodged or
shifted during shipment or installation. May require
torquing bolts, nuts and coil support blocks.
11. Imbalanced loads. All three phase loads should be
balanced per ANSI tolerances.
12. Triplen harmonic generating loads. Third harmonic
circulating in delta primary will add over excitation.
Disconnect load from transformer and then check sound
level.
Prior To Energizing
After the installation is completed, remove any debris from
the bottom of the cable compartment and from under the
transformer. After the transformer has been installed, but
before it is energized, all shipping braces should be
removed. Tighten securely all external bolts to eliminate
any vibrations. Check tap jumpers for proper location, and
all bolted connections for tightness. (use two wrenches).
Maintenance
Although dry type transformers require less maintenance
than liquid filled transformers and other electrical
devices, periodic cleaning and inspection on the average
of at least once a year should be performed except
under extraordinary conditions, in which case the
inspections should be made more often.
The unit must be de-energized and properly grounded
before checking for loose connections or parts,
accumulations of dirt on insulating surfaces, and dust
which tends to restrict air flow. The windings may be
cleaned with a vacuum cleaner, a blower, or with
compressed air. The use of a vacuum cleaner is
preferred as the first step in cleaning followed by the
use of compressed air or nitrogen. The
FOR ADDITIONAL INFORMATION VISIT US ONLINE AT WWW.MGMTRANSFORMER.COM
MGM 100-10A
compressed air or nitrogen should be clean and dry and
should be applied at not more than 25 psi.
Lead supports, taps, terminal boards, bushings and
other major insulation surfaces should be brushed or
wiped with a dry cloth. The use of liquid cleaners is
undesirable because some of them have a
deteriorating effect on most insulating materials.
As long as the transformer is energized, humidity
conditions are unimportant. In the event that a dry
type transformer is de-energized and allowed to
cool to ambient, consideration must be given to the
possible effects of humidity. If moisture is noted, it
should be removed by drying with heated air from a
blower, with the maximum temperature of 110°C or
230°F. The heat must be distributed in the
enclosure. Incandescent lamps or heaters may also
be used if the same temperature limitations are
observed.
Lighting Tap Applications
Most transformers with 240V delta secondaries have a
120V single-phase lighting tap. The maximum single-phase
120V load can not exceed 10% of the three-phase
kVA rating. The load must also be balanced at 5%
maximum between X1 and X4 and 5% between X2
and X4. The three-phase kVA rating will be reduced
by 15% when lighting tap is used to maximum capacity.
Dielectric Insulation
Transformer insulation system is designed to protect the
integrity of the transformer to the BIL rating on the
nameplate. If exposed to lightning, switching surges or
severe transients, additional protection such as surge
arrestors, surge capacitors or a higher BIL rating should
be provided.
Ambient Temperature
Limiting ambient temperatures for normal service
conditions are specified in ANSI Standards for
Transformers. Transformers depend entirely on the
surrounding air for adequate ventilation. The ambient
should not exceed 40° C (104° F) and the average
temperature of the air for any 24 hour period should not
exceed 30°C (86° F). For operation at higher ambient
temperatures, transformer loading should be reduced
0.6% of rated kVA for each degree above 30° C average
ambient to a maximum of 50° C (unless transformer is
specifically designed for this temperature). The use of
transformers in cooling air above 50° C is not covered
by this guide, and the manufacturer should be
consulted before such installations are made.
5
Altitude
Transformers are normally designed for operation at
altitudes up to 1000 meters (3300 feet). To operate a
transformer above 1000 meters requires special
considerations in winding insulation. Consult your nearest
sales office for additional details. Refer to the latest edition
of NEMA ST20 for detailed guidelines.
Single Phase Three Wire Operation
Transformer is shipped from the factory with a link between
X2 & X3 for single phase three wire operation. X2 & X3 link
can be treated as neutral and can be solidly grounded. X1 to
neutral and X4 to neutral can be loaded up to 50% of kVA
each and will provide 120 Volts output. X1 & X4 will provide
240 Volts output.
If only 120 Volts is desired then remove the links (there will
be 2 links) between X2 and X3 and connect X1 to X3 and X2
to X4 to make windings in parallel.
References
All transformers are manufactured per NEMA and
ANSI/IEEE standards. Where the UL Label is affixed,
the transformer conforms to UL requirements.
Further information may be found in ANSI/IEEE
Standard C57.94. Recommended Practice For
Installation, Application, Operation And Maintenance Of
Dry Type General Purpose Distribution And Power
Transformers.
When you need Service
If you need service on products manufactured by MGM
Transformer we are ready to serve you. Contact the
nearest sales office for more information.
Terms and Conditions
Please refer to your copy of the “Terms and Conditions” for
warranty and product liability information. The “Terms and
Conditions” arrived along with your order acknowledgment,
are printed on the reverse page, and are available online at
www.mgmtransformer.com
.
MGM 100-10A
FOR ADDITIONAL INFORMATION VISIT US ONLINE AT WWW.MGMTRANSFORMER.COM
6
MGM 100
-
10A
Transformer Maintenance Log
Date Time Activity / Task / Observation Technician Name Comments
(E) SEISMIC ANGLE
)
TOP COVER
SIDE PANEL
3) BOLT SEISMIC ANGLE TO TOP CLAMP AS SHOWN.
(SEE CUTAWAY VIEW 1 ON NEXT PAGE
FRONT PANEL
(G) SEISMIC WASHER
(F) VIBRATION PAD
MARK HOLE LOCATIONS ON SIDE PANELS.
2)
1) DE-ENERGIZE TRANSFORMER.
4)
(QTY. 4 PER SIDE) SEISMIC ANGLE MAY NOT BE
FAILURE AND SERIOUS INJURY SHOULD THEY FALL
CAUTION
SHIELD FROM METAL SHAVINGS AND DRILL HOLES.
REMOVE SIDE PANELS OR COVER COILS TO 5)
CENTERED ON PANEL DUE TO CORE & COIL OFFSET.
FRONT & REAR PANELS.
**DRAWINGS ARE FOR ILLUSTRATION PURPOSE ONLY. TRANSFORMER MODELS MAY VARY.**
: METAL SHAVINGS CAN CAUSE ELECTRICAL
REMOVE TOP COVER AND
INCLUDED HARDWARE
ITEM DESCRIPTION QTY.
A 3/8"-16 X 2.00" BOLT 20
B 3/8" FLAT WASHER 32
C 3/8" LOCK WASHER 20
D 3/8" NUT 20
E SEISMIC ANGLE 4
F VIBRATION PAD 4
G SEISMIC WASHER 8
CA. 90040 (323)726-0888
MGM TRANSFORMER
ESP-621
GP CASE (A, B, B+, C, C+)
5701 SMITHWAY ST.
CITY OF COMMERCE
OSHPD (SEISMIC) RETROFIT
REVISED HARDWARE TO 3/8" PER MI. BSB, 11/01/11
APPV'D
C
SHEET 1 OF 2
BSB
CHK'D
DRAWN
REVISIONS
NAME
01/07/11
DATE
C
FORMAT WAS 11 X 17" & REVISED HARDWARE. BSB, 12/21/11
DRAWING NAME:
REV.
PART NAME:
FILE NAME: U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\ESP-621
B
A
DESCRIPTION:
FINALIZED AND APPROVED BY ALL. BSB, 01/11/12
D UPDATED DESCRIPTION AND NOTES. BSB, 02/02/12
D
FAB PARTS: ESP-624-1
INTO THE COILS.
APPENDIX A - SEISMIC KIT INSTALLATION INSTRUCTIONS (CASES A, B, B+, C, C+)
C
D
B
B
CUTAWAY VIEW 2
A
G
C
D
A
G
EXISTING
VIBRATION PAD
B
A
(E) SEISMIC
WALL
(F) VIBRATION
C
D
CUTAWAY VIEW 1
WASHER
(C) LOCK
ANGLE
CASE OUTSIDE
PAD
(B) FLAT
WASHER
(A) BOLT
(D) NUT
SINGLE PHASE =(2) COILS
THREE PHASE = (3) COILS
CA. 90040 (323)726-0888
MGM TRANSFORMER
ESP-621
OSHPD (SEISMIC) RETROFIT
5701 SMITHWAY ST.
CITY OF COMMERCE
GP CASE (A, B, B+, C, C+)
REV.
PART NAME:
FILE NAME:
SHEET 2 OF 2
BSB
APPV'D
CHK'D
DRAWN
REVISIONS
NAME
01/07/11
DATE
C
DRAWING NAME:
DESCRIPTION:
U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\ESP-621
**DRAWINGS ARE FOR ILLUSTRATION PURPOSE ONLY. TRANSFORMER MODELS MAY VARY.**
(SEE CUTAWAY VIEW 1)
AND TOP COVER.
REINSTALL FRONT & REAR PANELS
THAN 2 BOLTS LOOSE AT A TIME.
NO MORE
THE ROUND WASHERS AND PUT
(QTY. 8)
WITH VIBRATION PAD SANDWICHED
BETWEEN.
8)
SEISMIC ANGLES TO SIDE PANELS
(SEE CUTAWAY VIEW 2)
SEISMIC WASHERS IN THEIR PLACE.
6) ON THE UNDER SIDE OF THE
BASE AND THE UNDER SIDE OF THE
MOUNTING BRACKETS REMOVE
7) REINSTALL SIDE PANELS AND BOLT
D
APPENDIX A - SEISMIC KIT INSTALLATION INSTRUCTIONS (CASES A, B, B+, C, C+) (CON’T.)
(E) SEISMIC ANGLE
(F) VIBRATION PAD
FAILURE AND SERIOUS INJURY SHOULD THEY FALL
3)
1) DE-ENERGIZE TRANSFORMER.
ON NEXT PAGE(SEE CUTAWAY VIEW 1
BOLT SEISMIC ANGLES TO TOP CLAMP AS SHOWN.
: METAL SHAVINGS CAN CAUSE ELECTRICAL
)
TOP COVER
SIDE PANEL
FRONT PANEL
4) MARK HOLE LOCATIONS ON SIDE PANELS. (QTY.
4 PER SIDE) SEISMIC ANGLE MAY NOT BE CENTERED
ON PANEL DUE TO CORE & COIL OFFSET.
5) REMOVE SIDE PANELS OR COVER COILS TO
SHIELD FROM METAL SHAVINGS AND DRILL HOLES.
CAUTION
2) REMOVE TOP COVER AND
FRONT & REAR PANELS
(G) SEISMIC WASHER
**DRAWINGS ARE FOR ILLUSTRATION PURPOSE ONLY. TRANSFORMER MODELS MAY VARY.**
INCLUDED HARDWARE
ITEM DESCRIPTION QTY.
A 1/2"-13 X 2" BOLT 16
B 1/2" FLAT WASHER 28
C 1/2" LOCK WASHER 16
D 1/2" NUT 16
E SEISMIC ANGLE 4
F VIBRATION PAD 4
G SEISMIC WASHER 4
MGM TRANSFORMER
OSHPD (SEISMIC) RETROFIT
CA. 90040 (323)726-0888
ESP-622
5701 SMITHWAY ST.
CITY OF COMMERCE
GP CASE (D & E)
FORMAT WAS 11 X 17" & REVISED HARDWARE. BSB, 12/21/11
B
SHEET 1 OF 2
BSB
APPV'D
CHK'D
DRAWN
REVISIONS
NAME
01/10/11
DATE
B
DRAWING NAME:
A
REV.
PART NAME:
FILE NAME: U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\ESP-622
DESCRIPTION:
FINALIZED AND APPROVED BY ALL. BSB, 01/11/12
C UPDATED DESCRIPTION AND NOTES. BSB, 02/07/12
C
INTO THE COILS.
FAB PARTS: ESP-624-2
APPENDIX B - SEISMIC KIT INSTALLATION INSTRUCTIONS (CASES D & E)
8) REINSTALL FRONT & REAR PANELS
AND TOP COVER.
7) REINSTALL SIDE PANELS AND BOLT SEISMIC
ANGLES TO SIDE PANELS WITH VIBRATION PAD
SANDWICHED BETWEEN. (SEE CUTAWAY VIEW 1)
**DRAWINGS ARE FOR ILLUSTRATION PURPOSE ONLY. TRANSFORMER MODELS MAY VARY.**
PAD
CUTAWAY VIEW 2
D
G
B
A
VIBRATION
EXISTING
C
SINGLE PHASE = (2) COILS
THREE PHASE = (3) COILS
ANGLE
(D) NUT
(E) SEISMIC
WASHER
WASHER
(B) FLAT
(A) BOLT
(C) LOCK
PAD
(F) VIBRATION
WALL
CUTAWAY VIEW 1
D
C
B
A
CASE OUTSIDE
6) ON THE UNDER SIDE OF THE MOUNTING
CHANNEL REMOVE THE ROUND WASHERS
AND PUT SEISMIC WASHERS IN THEIR PLACE.
(SEE CUTAWAY VIEW 2) NO MORE THAN 2
BOLTS LOOSE AT A TIME. (QTY. 4)
ESP-622
5701 SMITHWAY ST.
CITY OF COMMERCE
CA. 90040 (323)726-0888
MGM TRANSFORMER
GP CASE (D & E)
OSHPD (SEISMIC) RETROFIT
SHEET 2 OF 2
BSB
APPV'D
CHK'D
DRAWN
REVISIONS
NAME
01/10/11
DATE
B
DRAWING NAME:
REV.
DESCRIPTION:
PART NAME:
FILE NAME: U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\ESP-622
C
APPENDIX B - SEISMIC KIT INSTALLATION INSTRUCTIONS (CASES D & E) (CON’T.)
Height
Total
Height
Half of
Total
2. (Qty 2) Wall mount brackets
KIT CONTENTS:
1. (Qty 6) 5/16 X 1" Self-drilling/tapping screws
*If the side panel has pre-marked locations simply line up the bracket with these dimples.
To attach wall mount brackets, put one of the included 5/16 x 1" self-drilling/tapping
screws through the center hole of the wall mount bracket and through the case. It
should be 1" from the rear of the case to the hole and at the centerline of the cases
vertical height. Then add the other 2 adjacent screws. Repeat for other side.
GP WALL MOUNT INSTALLATION
ESP-627
MGM TRANSFORMER
CA. 90040 (323)726-0888
5701 SMITHWAY ST.
CITY OF COMMERCE
CASES (A, B, B+)
A
SHEET 1 OF 1
BSB
APPV'D
CHK'D
DRAWN
REVISIONS
NAME
10/3 1/11
DATE
A
DRAWING NAME:
REV.
FILE NAME: U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\GP A-C+\ESP-627
FINALIZED AND APPROVED BY ALL. BSB, 01/11/12
1.000
Top Mounting
Location
two bolts with washers at the bottom mounting locations. Then (ONE AT A TIME)
remove the top bolts to add a washer and re-install them.
transformer like a picture from these bolts at the top mounting locations. Next install
5/16" and of a suitable length and type for the intended mounting surface). Hang the
To mount the unit on the wall, first install two bolts (not included) on the desired wall at
the correct mounting width apart and at your desired height (Minimum bolt size is
Bottom Mounting
Location
Mounting Width
FAB PARTS ESP-628
APPENDIX C - WALL MOUNT BRACKET INSTALLATION INSTRUCTIONS
WEATHERPROOF KIT
ESP-629
MGM TRANSFORMER
CA. 90040 (323)726-0888
5701 SMITHWAY ST.
CITY OF COMMERCE
INSTALLATION INSTRUCTIONS
A
SHEET 1 OF 1
BSB
APPV'D
CHK'D
DRAWN
REVISIONS
NAME
12/2 3/11
DATE
A
DRAWING NAME:
REV.
U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\ESP-629
PART NAME:
FILE NAME:
DESCRIPTION:
FINALIZED AND APPROVED BY ALL. BSB, 01/11/12
2
2
QTY:
1
removed in step 8, secure the rain deflector to the
enclosure - see figure 2.
WEATHERPROOF KIT
existing holes in the enclosure. Using the screws
ITEMS SUPPLIED WITH WEATHERPROOF KIT
INSTALLATION INSTRUCTIONS
10) Install the other rain deflector by repeating steps
8 and 9 on the opposite side.
1) Read and understand all the instructions before
beginning installation.
2) Check that no parts are missing from the
weatherproof kit.
3) If the transformer is energized, de-energize and
lock out power supplying the transformer before
proceeding.
4) Remove the top two front panel screws that
secure the front panel to the enclosure. Save the
screws for re-use.
5) Slip the rainhood lip up under the top cover
flange.
6) Line up the rainhood mounting holes with the
existing holes in the enclosure. Using the screws
removed in step 4, secure the rainhood to the
enclosure - see figure 1.
7) Install the other rainhood by repeating steps 4
thru 6 on the opposite side.
8) Remove the bottom two front panel screws that
secure the front panel to the enclosure. Save the
screws for re-use.
9) Line up the rain deflector mounting holes with the
DESCRIPTION
RAINHOODS
RAIN DEFLECTORS
INSTRUCTION SHEET
FIGURE 2 - RAIN DEFLECTOR
FIGURE 1 - RAINHOOD
APPENDIX D - WEATHERPROOF KIT INSTALLATION INSTRUCTIONS
FIGURE 1
side, use two self drilling/tapping screws to mount
2
INSTALLATION INSTRUCTIONS
the screen on the transformer.
1
ITEMS SUPPLIED WITH WEATHERPROOF KIT
RODENT / BIRD SCREEN KIT
5) Repeat step 4 on opposite side.
the transformer. With the mounting slots on the top
QTY:
1) Read and understand all the instructions before
beginning installation.
2) Check that no parts are missing from the
rodent/bird screen kit.
3) If the transformer is energized, de-energize and
lock out power supplying the transformer before
proceeding.
4) Center the screen on the open vented area of
DESCRIPTION
RODENT / BIRD SCREENS
INSTRUCTION SHEET
RODENT/BIRD SCREEN
ESP-631
MGM TRANSFORMER
CA. 90040 (323)726-0888
5701 SMITHWAY ST.
CITY OF COMMERCE
INSTALLATION INSTRUCTIONS
REV.
PART NAME:
FILE NAME: U:\CASE Dry (PDF, CAD & Programs)\(SW 2012 files)\(2012) GP Cases\ESP-631
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APPV'D
CHK'D
DRAWN
REVISIONS
NAME
01/13 /12
DRAWING NAME:
DATE
A
DESCRIPTION:
FINALIZED AND APPROVED. BSB, 01/16/12
APPENDIX E - RODENT / BIRD SCREEN KIT INSTALLATION INSTRUCTIONS
Terms and Conditions
MGM TRANSFORMER COMPANY
5701 SMITHWAY STREET • COMMERCE, CA 90040
(323) 726-0888 • (800) 423-4366 • FAX (323) 726-8224
www.mgmtransformer.com
APPLICABLE LAW: MGM Transformer is a
California corporation doing business in California
and as such requires that any litigation brought
against the company have exclusive venue in
California . Applicable law may be either the laws
of the state of California, or the U.C.C. This
requirement of California jurisdiction is mandatory
despite the fact that MGM ships products
nationwide.
STANDARD CONDITIONS OF SALE: The
information contained herein covers the terms and
conditions under which MGM Transformer
Company products are sold. Any modifications of
these terms and conditions, unless agreed to in
writing, will not be recognized.
CHANGES : Prices, conditions and terms of sale
are subject to change without notice.
TERMS: Terms are 1% ten days, net thirty (30)
days from date of invoice. The Company may at
any time require full or partial payment in advance.
If the purchaser delays shipments, payment shall
become
due from the date when the Company is
prepared to make shipment. Apparatus held for the
purchaser shall be at the risk and expense of the
purchaser.
QUOTATIONS: Quotations, written or verbal, are
subject to the conditions of sale listed
herein. Written quotations automatically expire
thirty (30) calendar days from the date issued and
are subject to withdrawal by notice within that
period. Verbal quotations automatically expire
twenty-four (24) hours from the time issued.
ACCEPTANCE OF ORDERS: All orders shall be
written and are subject to acceptance at the factory.
EQUIPMENT DESTINED FOR FEDERAL,
STATE, OR LOCAL GOVERNMENT: MGM is
not bound to honor quotations for equipment
destined for Federal, State, or Local Government
unless MGM knows at the time of quoting that it is
a government job as these orders frequently involve
higher administration costs.
TAXES: Prices do not include sales, use, excise, or
other taxes. If any products or materials delivered
hereunder are determined to be taxable under any
sales, use, excise, or other taxes applicable to the
sale or delivery of personal property, Purchaser
shall be liable for and pay the same without
recourse against Seller, or in lieu thereof furnish
Seller with a tax-exemption certificate acceptable to
taxing authorities.
ERRORS: All stenographic and clerical errors are
subject to correction.
DELIVERY: MGM can arrange for apparatus to be
sold F.O.B, point of shipment; or freight prepaid.
UNLOADING AND DEMURRAGE: Unless
stated otherwise in our quote, it is the customer’s
responsibility to unload all shipments whether by
rail or truck. All demurrage charges are customer
responsibility.
MGM recognizes that sometimes the size or weight
of shipments requires the customer to make prior
unloading arrangements. In such cases the
customer shall advise MGM prior to shipment the
hours during which shipments cam be received and
the notice required before delivery. MGM will then
reflect these arrangements on the bill of lading.
Origin method of shipment and routing: The
company will determine the point of origin, method
of transportation, and the routing of shipment.
Purchasers requiring other routings will be billed
any excess in transportation charges.
PENALTY CLAUSES: The Company will not
pay or be liable for any penalty, either liquidated
or otherwise, for late delivery or installation.
Shipping dates are estimated and are dependent
upon prompt receipt of all information and material
necessary. The Company shall also not be liable for
any unforeseen delay, i.e. acts of God or inability to
obtain necessary labor, materials, or manufacturing
facilities due to such causes.
CANCELLATION: Buyer shall not have the
right to cancel purchase orders because of
reasonable delays in deliveries. An y order or
contract if cancelled requires paymen t based on the
following table:
Purchase Order Released……..20%
Engineering Complete………..50%
Purchasing Complete………..100%
Changes: The customer has the right to change
their order, in writing, if agreed upon by seller.
Should such changes alter the amount due or time
required for production, an equitable adjustment of
price and/or time shall be made. Changes affecting
function
or performance of item ordered may not be
made without prior written consent from MGM.
Warranty: MGM transformers are guaranteed to
be of the highest quality. They are further
guaranteed, when used for the purpose intended and
operated under normal conditions to give
continuous and efficient service. MGM Transformer
Company agrees to correct any defect in
workmanship or material, which may develop under
proper or normal use during the period of one year
from date of shipment. Should a transformer fail
within the warranty period, MGM will issue
authorization to return the failed transformer to one
of MGM’s plants, freight prepaid. At MGM’s
option the failed transformer will be repaired,
replaced or credit will be issued depending on the
nature of the failure. A repaired transformer or
replacement will be delivered to the purchaser
F.O.B. point of shipment with freight prepaid.
Repair, replacement or issuance of credit with
regards t
o the defective transformer will constitute
fulfillment of all MGM’s liabilities in respect to
said
transformer. This guarantee does not
include
incidental expenses, such as expense of removing
and replacing the transformers from service. This
warranty is exclusive and in lieu of all
other warranties of quality whether written,
oral or implied (including any warranty of
merchantability or fitness for purpose.)
LIMITATION OF LIABILITY: MGM shall not
be liable in contract or in tort for special, indirect,
incidental, or consequential damages, such as but
not limited to, loss of profits or revenue, loss of use
of power system, cost of capital, cost of purchased
or replacement power, or claim of customers of
purchaser for service interruptions set forth herein
are exclusive, and the liability of MGM with respect
to any contract, or anything done in connection
therewith such as the performance of breach
thereof, or from the manufacture, sale, delivery, resale, installation, repair or use of any
equipment
covered by of furnished under this contract whether
in contract, in tort, or otherwise, shall not
exceed the price of the equipment or part on
which such liability is based.
RETURNING APPARATUS:
A. In no case are goods to be returned without
first obtaining the Company’s written
permission.
B. Any material returned and not authorized will
not be signed for and will be returned back
deadhead to the sender.
C. Material accepted for credit is subject to a
MINIMUM restocking charge of 20% plus all
transportation charges.
D. Material built to order is not subject for credit
under any circumstances.
E. If return is caused by fault of the Company,
full credit will be allowed.
EXPORT PACKING: Refer to factory for
additional cost of export packing.
SPECIAL CONDITIONS FOR POWER
TRANSFORMERS: Because of their nature, size,
and weight, the following additional policies apply
to power transformers:
A. MGM Transformer Company reserves the
right to determine the best mode of shipping.
All shipments will be made by truck unless
size or weight makes this impossible.
B. Prices quoted for power transformers do not
include high voltage or low voltage bushing
connectors unless specified in the inquiry and
quotation.
C. Field inspection or supervision is not
included
D. Standard testing is included. Special testing
or witness testing are extra cost items.
1. In the event of default by buyer of any
obligation buyer agrees to pay costs and
expenses including attorney fees, costs of suit
and interest at 0.83% per month.
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