Eaton Electrical Magnum Transfer Switch manual Bypassing the Transfer Switch, Automatic Operation

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Instructional Booklet

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Effective: March 2007

Fixed and Drawout Magnum Transfer Switches

Figure 36. Magnum Bypass Lights.

The right door control panel has the following standard features:

1.Light to indicate if the Source 1 switching device is isolated (only if the Source 1 switching device is racked out).

2.Light to indicate if the Source 2 switching device is isolated (only if the Source 2 switching device is racked out).

3.Light to indicate if the Source 1 bypass switching device is closed.

4.Light to indicate if the Source 2 bypass switching device is closed.

7.3 Bypassing the Transfer Switch

WARNING

THE CLOSED TRANSITION PRODUCT CONTAINS A SPECIAL CON- TACT ARRANGEMENT (OVERLAPPING CONTACTS). MISUSE CAN RESULT IN DEATH, SEVERE PERSONAL INJURY, AND/OR PROPERTY DAMAGE.

7.3.1 Source 1 to Source 1 BYPASS

The Source 1 switching device can be bypassed and isolated by the following sequence (Figures 36 and 37):

1.Move the generator selector switch to the OFF position to avoid nuisance starts.

2.Close the Source 1 bypass switch manually. The Source 1 bypassed light will illuminate.

3.Open and rack out the Source 1 switching device (see Section 6). The Source 1 isolated light will illuminate and the Source 1 position energized light will no longer be illuminated.

4.Inspect and/or perform the needed maintenance on the Source 1 switching device.

5.Rack in the Source 1 switching device (see Section 6). The Source 1 switching device will automatically recharge and close when it is in the CONNECT position. The Source 1 iso- lated light will no longer be illuminated, but the Source 1 posi- tion energized light will be illuminated.

6.Open the Source 1 bypass switch. The Source 1 bypassed light will no longer be illuminated.

7.The Source 1 switching device is now back in automatic oper- ation.

7.3.2Source 2 TO Source 2 BYPASS

The Source 2 switching device can be bypassed and isolated by the following sequence:

1.Move the generator selector switch to the RUN position to avoid losing power.

2.Close the Source 2 bypass switching device manually. The Source 2 bypass light will illuminate.

7.2 Automatic Operation

The intelligence/supervisory circuits on Eaton transfer switches constantly monitor the condition of both the Source 1 and Source 2 power sources. These circuits automatically initiate an immedi- ate transfer of power from the Source 1 to the Source 2 power source when the power source fails or the voltage level drops below a preset value. Transfer back to the Source 1 power source is automatic upon return of the Source 1 power source.

Monitoring the power source is always performed on the line side of the power source to which the switch is connected. The Source 1 power source is the preferred source and the transfer switch will always seek this source when it is available.

3.Open and rack out the Source 2 switching device

(see Section 6). The Source 2 isolated light will illuminate and the Source 2 position energized light will no longer be illumi- nated.

4.Inspect and/or perform the needed maintenance on the Source 2 switching device.

5.Rack in the Source 2 switching device (see Section 6). The Source 2 switching device will automatically recharge and close when in the CONNECT position. The Source 2 isolated light will no longer be illuminated, and the Source 2 position energized light will illuminate.

6.Open the Source 2 Bypass switch. The source 2 Bypass light will no longer be illuminated.

7.The Source 2 Switch is now back in automatic operation.

For more information visit: www.Eaton.com

IB01602011E

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Contents Manual for the Fixed and Drawout Magnum Transfer Switches Testing and Problem Solving Maintenance Renewal Parts GuideInstructional Booklet General Information Preliminary Comments and Safety PrecautionsIntroduction Typical Load Transfer Switch Switching Device Type Schematic Design ConfigurationTypical Bypass Isolation Switch Schematic Withstand RatingsGeneral Magnum Switching Device Magnum Fixed and Drawout Switching DevicesMagnum Transfer Switch Configurations 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 DescriptionDrawout Interlocks Power PanelSwitch Interlocks Open Transition Only Left Side View with Panels Removed Drawout Mechanism Voltage Selection PanelLogic Panel Relay Auxiliary Contacts FeaturesNeutrals Transfer Switch Equipment Enclosures EnclosureMounting Location Installation and WiringStandards 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 MechanismEngine Start Connection WiringOperation Automatic Transfer Switch Close Switch by Pushing Close ButtonSwitching Device Positioning Drawout and Fixed Switching DevicesInstalling a Drawout Switching Device Switching Device in the Connect Position Fixed Switching Device Levering and Position IndicationOperator Panel Operation of the Bypass Isolation Transfer SwitchSwitching Device Operation 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 Will Not Automatically Recharge Switches Transfer Switch Appears InoperativeTransfer Switch Will Not Automatically Transfer to Source 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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