KRATOS MTS User manual

MTS INSTALLATION AND
OPERATION MANUAL
60–3000 Amp
2, 3 & 4 Pole
WARNING Before Installation READ THIS MANUAL carefully to learn
how to properly install, operate and maintain this unit. Personal injury
and/or equipment damage will result by failing to pay attention to the
safety information and instructions in this manual.
RETAIN THIS MANUAL WITH THE UNIT. This technical manual
contains IMPORTANT SAFETY DATA and should be kept with the
Transfer Switch at all times.
7/16/20
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KRATOS INDUSTRIES MTS IOM 1
Contents
1 INTRODUCTION 2
2 RECEIVING, HANDLING, and STORAGE 2
2.1 RECEIVING ................................................ 2
2.2 HANDLING ................................................ 2
2.3 STORAGE ................................................. 3
3 INSTALLATION 3
3.1 MOUNTINGLOCATION......................................... 3
3.2 CABLE-ENTRY .............................................. 3
3.3 CONDUCTORROUTING ........................................ 3
3.4 POWERCONNECTIONS ........................................ 4
4 OPERATION 4
5 MAINTENANCE 5
6 TROUBLESHOOTING 5
7 OPTIONAL FEATURES 6
7.1 SHORTCIRCUITPROTECTION .................................... 6
7.2 SERVICEENTRANCERATING ..................................... 6
7.3 CAM-LOKRECEPTACLES........................................ 6
8 WARRANTY 6
9 WIRING DIAGRAMS 7
9.1 2POLEDIAGRAM ............................................ 7
9.2 3POLEDIAGRAM ............................................ 8
9.3 4POLEDIAGRAM ............................................ 9
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1 INTRODUCTION
Manual Transfer Switches are used to manually transfer power from one source to another. The most common
application is transferring power from the utility to a generator during a utility failure. Kratos Industries’
Manual Transfer Switch is an enclosed, three-position switch with an external handle for switching. Figure
1 below depicts a basic application of the Manual Transfer Switch with two sources and a center “OFF”
position. When failure of one source occurs, transfer to the other source by using the external handle. The
switch contains a center off position to prevent simultaneous connection of both sources.
Figure 1: Typical Transfer Scheme
2 RECEIVING, HANDLING, and STORAGE
2.1 RECEIVING
Upon receipt of the Manual Transfer Switch, unpack the unit and check for any damage that may have oc-
curred during shipment. If you see ANY damage OR potential damage STOP and contact the factory before
going any further. While our MTS are very rugged, shipping damage may cause the unit to malfunction or fail
resulting in a safety risk.
2.2 HANDLING
The following guidelines are provided to help avoid personal injury and equipment damage during handling.
1. Follow the manufacturer’s handling instructions for the specific equipment.
2. Handle the Manual Transfer Switch with care, to avoid damage to components and to the enclosure or its
finish. Rough handling can result in scratches to the paint which will promote premature rust/corrosion.
3. The MTS has an offset center of gravity. Make sure to use best practices for lifting and rigging the
enclosure off the pallet and into place. Soft straps should be used and care taken when strapping across
any sharp edge.
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2.3 STORAGE
Kratos Industries standard packaging is not intended for long-term storage, particularly in coastal areas. If
a long-term storage packaging is required, please contact the factory and we provide a cost for long-term
storage packaging.
If the Manual Transfer Switch is to be stored for any length of time prior to installation, restore the pack-
aging for protection during that period. Where conditions permit, leave the packing intact until the Manual
Transfer Switch is at its final installation position. When packing is removed, cover the top and openings of
the equipment during the construction period to protect them against dust and debris.
3 INSTALLATION
NOTE: It is the customer’s responsibility to ensure that all local, regional, and national codes and standards
are correctly followed. Installation, cable termination and startup should be performed by a licensed electri-
cian
Your product’s Nameplate – located on the door – will state the voltage, phase, frequency, appropriate wiring
diagram, environmental rating, and short circuit rating of the unit. Failure to comply with any of these desig-
nations may result in product failure and void your warranty.
3.1 MOUNTING LOCATION
It is the responsibility of the customer to determine the final mounting location of the Manual Transfer Switch
before installation.
Refer to the included dimensional drawing for mounting dimensions. Refer to your UL Information label
to ensure correct application. All indoor Manual Transfer Switches should be installed near the switchgear or
service entrance. All outdoor Manual Transfer Switches should be located as close as possible to the engine
generator or to the alternate source.
3.2 CABLE-ENTRY
Manual Transfer Switches are shipped from the factory with no holes for cable entry. Any enclosure pene-
trations for cable entry must be provided in the field. Conduits should be installed to prevent moisture or
water from entering and accumulating within the enclosure. All conduits (including stubs) should be bonded
to the Manual Transfer Switch. All conduits should be chosen to maintain the appropriate NEMA rating and
located in areas recommended by the manufacturer to avoid cable interference with structural members and
live components. See products nameplate for appropriate conduit NEMA rating.
3.3 CONDUCTOR ROUTING
Provisions should be made to locate conductors in the Manual Transfer Switch to avoid physical damage and
to avoid overheating. The conductors should be secured to withstand available short-circuit currents. Follow
the manufacturer’s instructions for lacing or bracing cables. The largest practical bending radius should be
maintained to avoid insulation damage and loose terminals. Please consult and follow appropriate NEMA
Bending Radius standards.
15892 W. 74th Ave
Arvada, CO. 80007
720.250.7856
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3.4 POWER CONNECTIONS
Refer to the drawings in the drawing packet provided for customer connections prior to installing. It is the re-
sponsibility of the customer to ensure the field conductors are sized appropriately. Ensure the Manual Trans-
fer Switch is in the “Off” position before making the connections. Connect the LOAD, NORMAL SOURCE
and EMERGENCY SOURCE power cables in the same phase sequence. Refer to the torque label on the door
interior for torque requirements.
Care should be exercised in stripping the insulation from the conductors to prevent the conductor from “nick”
or “ring”. For aluminum, clean all oxide from the stripped portion and immediately apply inhibiting compound.
Installation of cables should be done at temperatures above freezing to prevent cable insulation from cracking
or splitting due to cold, unless the cable is suitable for installation at temperatures below freezing.
4 OPERATION
Refer to the schematic and wiring diagrams provided with the Manual Transfer Switch. These drawings are
provided in a packet and 2, 3 and 4 pole diagrams can be found in this manual.
After installation is complete and either source for the Manual Transfer Switch is energized, a source availabil-
ity pilot light on the door exterior will energize, indicating the source is live. Transfer to either source is done
by turning the exterior handle in the source direction indicated on the exterior door. Direct transfer from one
source to the other is not possible due to the center “OFF” position. The operator must turn the handle from
the first source to the center “OFF” position and then from the center “OFF” position to the second source.
The enclosure door is interlocked with the Manual Transfer Switch, preventing opening of the enclosure
door when the switch is in either source position. A white tab on the switch handle is present for adding
a padlock to lock the switch in a position. As shown in figure 2 below, lifting the tab exposes the holes for
inserting the padlock shackle and prevents the handle from turning to a different position.
Figure 2: Switch Handle
Two Form-C auxiliary contacts are included for both source positions. Refer to the schematic supplied with
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the Manual Transfer Switch. The contacts are rated for pilot duty: 5 Amps @ 125 or 250 VAC.
5 MAINTENANCE
DO NOT TOUCH THE MANUAL TRANSFER SWITCH UNIT UNTIL ALL
POWER IS DISCONNECTED. SHOCKS, BURNS OR DEATH MAY RESULT
FROM HIGH VOLTAGE
Preventative Maintenance
The following checks should be performed as a part of routine maintenance.
XAfter installation a transfer test of the Manual Transfer Switch should be performed WEEKLY
◦Verify the Manual Transfer Switch transfers to the emergency power source.
◦Verify the Manual Transfer Switch re-transfers to the NORMAL position.
XInspect unit for any signs of damage, weathering, or water intrusion
XKeep clean of dirt and water – use a VACUUM or CLOTH – as with all electrical equipment, do not use
compressed air as it may lodge contaminates into electrical components.
XCheck all wiring connections that may have become loose or corroded.
XVisually inspect the contacts for surface deposits and pitting ANNUALLY.
6 TROUBLESHOOTING
DO NOT TOUCH THE MANUAL TRANSFER SWITCH UNIT UNTIL ALL
POWER IS DISCONNECTED. SHOCKS, BURNS OR DEATH MAY RESULT
FROM HIGH VOLTAGE
Before troubleshooting, perform the following checks:
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XVisual Inspection for physical damage.
XEnsure the source intended for use is operational and available.
XEnsure the switch handle is in the intended position.
XEnsure all wiring connections are secure.
XIf the unit is fusible, ensure the fuses are not blown.
XIf the unit contains a circuit breaker, ensure the breaker has not tripped.
As-built schematics and panel outlines are provided as a part of the drawing packet supplied with each Manual
Transfer Switch and in this manual. Consult factory if a cause for the problem cannot be found.
7 OPTIONAL FEATURES
7.1 SHORT CIRCUIT PROTECTION
Manual Transfer Switches can be provided with short circuit protection, including fuses or a circuit breaker.
Fusible Manual Transfer Switches do not come with fuses unless purchased separately.
7.2 SERVICE ENTRANCE RATING
Manual Transfer Switches can be rated “Suitable for use as Service Equipment.” Service Entrance rated switches
will have short circuit protection, main bonding jumper, and a Service Disconnect Label. When the Manual
Transfer Switch is to be used as Service Equipment, the label, “SERVICE DISCONNECT” should be placed
near the disconnect handle.
7.3 CAM-LOK RECEPTACLES
Manual Transfer Switches can be provided with Cam-Lock receptacles and flip covers installed for a portable
generator. The receptacles can be male or female and will be color coded for the nominal voltage. It is the
responsibility of the customer to ensure that the generator cables are fitted with the appropriate cord-ends.
Before connecting, ensure the portable generator in not energized and the Manual Transfer Switch is not in
the Emergency position.
8 WARRANTY
Kratos Industries warrants equipment manufactured by it and sold through authorized sales channels to be
free from defects in materials and workmanship for the lesser of eighteen (18) months from date of shipment
or twelve (12) months from date of commission. If within such period any such equipment shall be proved to
Kratos Industries satisfaction to be non-conforming, such equipment shall be repaired or replaced at Kratos
Industries option.
This warranty shall not apply to:
(a) equipment not manufactured by Kratos Industries.
(b) equipment that has been repaired or altered by other than Kratos Industries so as, in its judgment, to
adversely affect the same.
(c) equipment that has been subjected to negligence, accident, or damage by circumstances beyond Kratos
Industries control.
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KDoc_001 Rev A 7/16/20

KRATOS INDUSTRIES MTS IOM 7
(d) equipment which has been damaged through improper operation, maintenance, or storage.
(e) equipment which has been subjected to other than normal use or service.
With respect to equipment not manufactured by Kratos Industries, the warranty obligations of Kratos In-
dustries shall in all respects conform and be limited to the warranty actually extended to Kratos Industries
by its supplier. Non-conforming products must be returned at the purchaser’s expense for evaluation unless
this requirement is waived in writing. Replacement products may be new or reconditioned. The foregoing
warranties cover replacement product only and do not cover reimbursement for labor, transportation, re-
moval, installation, temporary power, or any other expenses that may be incurred in connection with repair
or replacement.
9 WIRING DIAGRAMS
9.1 2 POLE DIAGRAM
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KRATOS INDUSTRIES MTS IOM 8
9.2 3 POLE DIAGRAM
15892 W. 74th Ave
Arvada, CO. 80007
720.250.7856
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KDoc_001 Rev A 7/16/20

KRATOS INDUSTRIES MTS IOM 9
9.3 4 POLE DIAGRAM
15892 W. 74th Ave
Arvada, CO. 80007
720.250.7856
www.kratosind.com
[e-mail]
KDoc_001 Rev A 7/16/20