Eaton Electrical Magnum Transfer Switch manual Power Cable Connections

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Instructional Booklet

Fixed and Drawout Magnum Transfer Switches

Effective: March 2007

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4.5 Power Cable Connections

WARNING

POWER CONDUCTORS MAY HAVE VOLTAGE PRESENT THAT CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. DE-ENERGIZE ALL POWER OR CONTROL CIRCUIT CONDUCTORS TO BE CONNECTED TO THE TRANSFER SWITCH EQUIPMENT BEFORE BEGINNING TO WORK WITH THE CONDUCTORS AND/OR TERMINATING THEM TO THE EQUIPMENT.

Table 5. Wire Size for Available Power Cable Connections.

DEVICE

SWITCH

CABLES

RANGE

 

RATING

PER

WIRING SIZE

 

(AMPS)

PHASE

 

Switch

800-2000

6

3/0-750 MCM

 

 

 

 

Switch

2500-3200

9

3/0-750 MCM

 

 

 

 

Neutral

800-2000

24

4/0-500 MCM

Neutral

2500-3200

36

4/0-500 MCM

 

 

 

 

CAUTION

USE OF CABLE LUGS NOT DESIGNED FOR THE TRANSFER SWITCH APPLICATIONS MAY CAUSE HEATING PROBLEMS. BREAKER LUGS ONLY MOUNT TO THE BREAKER, WHILE TRANSFER SWITCH LUGS MOUNT TO BOTH THE BREAKER AND THE BUS BAR BEHIND THE BREAKER. FOR INSTALLATION INSTRUCTIONS, REFER TO THE INSTRUCTION LEAFLET SUPPLIED FOR THE SPECIFIC LUGS.

CAUTION

TO HELP PREVENT COMPONENT DAMAGE OR FUTURE MALFUNC- TIONS, USE EXTREME CARE TO KEEP CONTAMINANTS OUT OF THE TRANSFER SWITCH EQUIPMENT WHEN MAKING POWER CABLE CONNECTIONS.

Proceed with the following steps:

Step 1: Verify that the line and load cables comply with applica- ble electrical codes.

Step 2: Verify that the transfer switch rated current and voltage (see identification plate on the door of the transfer switch) agree with system current and voltage.

Step 3: After the transfer switch is mounted, provide the conduit or cable openings as required. Ensure that no metal filings contaminate the transfer switch components.

Step 4: Test all power cables before connecting them to the unit to insure that the conductors or the cable insulation have not been damaged while being pulled into position.

Step 5: Carefully strip the insulation from the power cables. Avoid nicking or ringing of the conductor strands. Pre- pare the stripped conductor termination end by cleaning it with a wire brush. If aluminum conductors are used, apply an appropriate joint compound to the clean conduc- tor surface area. Refer to Figure 13 for the approximate locations of the power connections.

Power cables are to be connected to solderless screw type lugs located on the transfer switch switching devices. Refer to the separate Customer Wiring Diagrams supplied with the transfer switch equipment for power termination. Verify that the lugs sup- plied will accommodate the power cables being used. Also verify that the cables comply with local electrical codes. Standard trans- fer switch equipment, as supplied from the factory, will accommo- date the wire sizes shown in Table 5.

CAUTION

IMPROPER POWER CABLE CONNECTIONS CAN CAUSE EXCESSIVE HEAT AND SUBSEQUENT EQUIPMENT FAILURE.

Step 6: Tighten the cable lugs to the torque identified on the label affixed to the door.

Step 7: Make the necessary connections of any options using the wiring diagrams supplied with the unit.

Step 8: Connect the engine start wires to the logic connector J5-1 & J5-2 on the ATC-600/ATC-800 Controller.

IB01602011E

For more information visit: www.Eaton.com

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Contents Manual for the Fixed and Drawout Magnum Transfer Switches Testing and Problem Solving Maintenance Renewal Parts GuideInstructional Booklet Preliminary Comments and Safety Precautions IntroductionGeneral Information Typical Load Transfer Switch Switching Device Type Schematic Design ConfigurationTypical Bypass Isolation Switch Schematic Withstand RatingsMagnum Fixed and Drawout Switching Devices Magnum Transfer Switch ConfigurationsGeneral Magnum Switching Device Fixed Switching Device for the Magnum Transfer Switch Transfer Switch Catalog Number Identification Using the Style Identification Guide Transfer Switch Catalog Number ExplanationReceiving, Handling, and Storage Equipment DescriptionPower Panel Switch Interlocks Open Transition OnlyDrawout Interlocks Left Side View with Panels Removed Voltage Selection Panel Logic PanelDrawout Mechanism Features NeutralsRelay Auxiliary Contacts Transfer Switch Equipment Enclosures EnclosureInstallation and Wiring StandardsMounting Location Unpackaging and Inspection Mounting Procedure Seismic Tested and Approved Product Mounting InstructionsPower Cable Connections Wire Size for Available Power Cable ConnectionsVoltage Selection Adjustment Mounting the Switching Device in the Drawout MechanismWiring OperationEngine Start Connection Automatic Transfer Switch Close Switch by Pushing Close ButtonDrawout and Fixed Switching Devices Installing a Drawout Switching DeviceSwitching Device Positioning Switching Device in the Connect Position Fixed Switching Device Levering and Position IndicationOperation of the Bypass Isolation Transfer Switch Switching Device OperationOperator Panel Source 1 to Source 1 Bypass Bypassing the Transfer SwitchAutomatic Operation Source 2 to Source 2 BypassInto Its Source 2 to Source 1 Bypass Open Transition Only Testing Testing and Problem SolvingManual Operation When in Bypass Mode Problem SolvingTransfer Switch Appears Inoperative Transfer Switch Will Not Automatically Transfer to SourceTransfer Switch Will Not Automatically Recharge Switches Maintenance Procedures MaintenancePeriodic Maintenance Procedures IntroductionCover Removal and Replacement Cover Removal and ReplacementRenewal Parts Guide Instructional Booklet Sensing Harness TSMGH02 Kcmil Neutral Terminal Instructional Booklet

Magnum Transfer Switch specifications

The Eaton Electrical Magnum Transfer Switch is a premium solution designed for reliable power management in various applications, ranging from data centers to critical facilities. Known for its robust performance and advanced technology, the Magnum Transfer Switch ensures seamless transitions between utility and backup power sources, thereby enhancing operational continuity.

One of the standout features of the Eaton Magnum Transfer Switch is its unparalleled reliability. The switch is designed with heavy-duty components that provide up to 3,000 amps of continuous current with exceptional fault protection. Its construction is particularly suited for environments where power availability is crucial, ensuring that critical loads remain powered even during grid failures.

The Magnum Transfer Switch incorporates advanced technologies that simplify the operation and monitoring of power systems. It includes microprocessor-based controls that offer users customizable settings and configurations. These smart controls enable automatic transfer operations, ensuring quick response times when switching between power sources. The intelligent diagnostics feature further enhances reliability by offering predictive maintenance alerts, which help in identifying potential issues before they lead to failures.

Safety is a priority with the Magnum Transfer Switch. It is equipped with multiple interlocking features that prevent accidental switchovers and ensure that maintenance can be performed without the risk of electrical accidents. The design adheres to stringent safety standards, providing users with peace of mind.

Flexibility is another characteristic of the Eaton Magnum Transfer Switch. It offers a range of mounting options and configurations to fit diverse installation needs, whether in commercial infrastructures or industrial settings. The switch can be integrated with various power systems, making it a versatile choice for project developers and facility managers.

Additionally, the Magnum Transfer Switch supports eco-friendly initiatives through energy-efficient designs that minimize power loss during transfer operations. This feature is increasingly important as businesses aim to reduce their carbon footprint and enhance sustainability.

In summary, the Eaton Electrical Magnum Transfer Switch stands out for its reliable performance, advanced technologies, and robust safety measures. It is a versatile solution that meets the demands of modern power management, ensuring that critical systems operate continuously, even in the face of unexpected power interruptions. With its combination of efficiency, safety, and flexibility, the Magnum Transfer Switch remains a trusted choice for professionals in various industries.
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