Eaton Electrical Magnum Transfer Switch Introduction, Preliminary Comments and Safety Precautions

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Instructional Booklet

Fixed and Drawout Magnum Transfer Switches

Effective: March 2007

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Section 1: Introduction

1.1 Preliminary Comments and Safety Precautions

This technical document is intended to cover most aspects associ- ated with the installation, application, operation, and maintenance of transfer switch equipment with ratings from 800 through

3200 amperes (A), except for the specific logic used to control the equipment. It is provided as a guide for authorized and quali- fied personnel only. Please refer to the specific WARNING and CAUTION in Section 1.1.2 before proceeding. If further informa- tion is required by the purchaser regarding a particular installation, application, or maintenance activity, contact an Eaton representa- tive. For information associated with the control, refer to the sep- arate instruction book pertaining to the logic package installed in the switch.

1.1.1 Warranty and Liability Information

No warranties, expressed or implied, including warranties of fit- ness for a particular purpose of merchant-ability, or warranties arising from course of dealing or usage of trade, are made regard- ing the information, recommendations and descriptions contained herein. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information and descriptions con- tained herein.

1.1.2 Safety Precautions

All safety codes, safety standards, and/or regulations must be strictly observed in the installation, operation, and maintenance of this device.

WARNING

THE WARNINGS AND CAUTIONS INCLUDED AS PART OF THE PRO- CEDURAL STEPS IN THIS DOCUMENT ARE FOR PERSONNEL SAFETY AND PROTECTION OF EQUIPMENT FROM DAMAGE. AN EXAMPLE OF A TYPICAL WARNING LABEL HEADING IS SHOWN ABOVE TO FAMILIARIZE PERSONNEL WITH THE STYLE OF PRESENTATION. THIS WILL HELP TO INSURE THAT PERSONNEL ARE ALERT TO WARNINGS, WHICH APPEAR THROUGHOUT THE DOCUMENT. IN ADDITION, CAUTIONS ARE ALL UPPER CASE AND BOLDFACE.

.

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.

1.2 General Information

Transfer switches are used to protect critical electrical loads against loss of power. The Source 1 power source of the load is backed-up by a Source 2 power source. A transfer switch is con- nected to both the Source 1 and Source 2 power sources and sup- plies the load with power from one of these two sources. In the event that power is lost from the Source 1 power source, the transfer switch transfers the load to the Source 2 power source. This transfer can be automatic or manual, depending upon the type of transfer switch equipment being used. Once Source 1 power is restored, the load is automatically or manually trans- ferred back to the Source 1 power source, again depending upon the type of transfer equipment being used (Figure 2).

In addition, the Eaton closed transition transfer switch may be applied where it is desirable to avoid any momentary power inter- ruptions. Although the closed transition switch is not a substitute for an uninteruptable power source (UPS), it does eliminate power interruptions to loads except to those caused by power sources or equipment external to the transfer switch. If both sources are acceptable as determined by the IQ Transfer logic, a make-before- break transfer is performed during a transfer test or retransfer operation.

1.2.1 Transfer Switch Types

There are four types of transfer switch equipment.

Automatic Transfer Switch

Automatic transfer switches (ATSs) automatically perform the transfer function. They consist of three basic elements:

1.Main contacts to connect and disconnect the load to and from the source of power.

2.Intelligence/supervisory circuits to constantly monitor the con- dition of the power sources and thus provide the intelligence necessary for the switch and related circuit operation.

3.A transfer mechanism to effect the transfer of the main con- tacts from source to source.

CAUTION

COMPLETELY READ AND UNDERSTAND THE MATERIAL PRESENTED IN THIS DOCUMENT BEFORE ATTEMPTING INSTALLATION, OPERA- TION, OR APPLICATION OF THE EQUIPMENT. IN ADDITION, ONLY QUALIFIED PERSONS SHOULD BE PERMITTED TO PERFORM ANY WORK ASSOCIATED WITH THE EQUIPMENT. ANY WIRING INSTRUCTIONS PRESENTED IN THIS DOCUMENT MUST BE FOL- LOWED PRECISELY. FAILURE TO DO SO COULD CAUSE PERMA- NENT EQUIPMENT DAMAGE.

IB01602011E

For more information visit: www.Eaton.com

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Contents Testing and Problem Solving Maintenance Renewal Parts Guide Manual for the Fixed and Drawout Magnum Transfer SwitchesInstructional Booklet Preliminary Comments and Safety Precautions IntroductionGeneral Information Design Configuration Typical Load Transfer Switch Switching Device Type SchematicWithstand Ratings Typical Bypass Isolation Switch SchematicMagnum 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 Transfer Switch Catalog Number Explanation Using the Style Identification GuideEquipment Description Receiving, Handling, and StoragePower Panel Switch Interlocks Open Transition OnlyDrawout Interlocks Left Side View with Panels Removed Voltage Selection Panel Logic PanelDrawout Mechanism Features NeutralsRelay Auxiliary Contacts Enclosure Transfer Switch Equipment EnclosuresInstallation and Wiring StandardsMounting Location Seismic Tested and Approved Product Mounting Instructions Unpackaging and Inspection Mounting ProcedureWire Size for Available Power Cable Connections Power Cable ConnectionsMounting the Switching Device in the Drawout Mechanism Voltage Selection AdjustmentWiring OperationEngine Start Connection Close Switch by Pushing Close Button Automatic Transfer SwitchDrawout and Fixed Switching Devices Installing a Drawout Switching DeviceSwitching Device Positioning Switching Device in the Connect Position Levering and Position Indication Fixed Switching DeviceOperation of the Bypass Isolation Transfer Switch Switching Device OperationOperator Panel Source 2 to Source 2 Bypass Bypassing the Transfer SwitchAutomatic Operation Source 1 to Source 1 BypassInto Its Source 2 to Source 1 Bypass Open Transition Only Problem Solving Testing and Problem SolvingManual Operation When in Bypass Mode TestingTransfer Switch Appears Inoperative Transfer Switch Will Not Automatically Transfer to SourceTransfer Switch Will Not Automatically Recharge Switches Introduction MaintenancePeriodic Maintenance Procedures Maintenance ProceduresCover 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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