Eaton Electrical Magnum Transfer Switch Voltage Selection Panel, Logic Panel, Drawout Mechanism

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Instructional Booklet

Fixed and Drawout Magnum Transfer Switches

Effective: March 2007

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3.2.5 Drawout Mechanism

The drawout mechanism is described in detail in Section 6 (Figure 14).

Figure 14. Drawout Mechanism (Closed Transition Shown)

3.3 Voltage Selection Panel

3.3.1North American Voltage Selection (120, 208, 240, 480, and 600 V, 60 Hz)

The North American market voltage selection panel consists of multi-tap transformers, contained in a steel case mounted in the transfer switch enclosure (Figure 15). The cover has “teardrop” holes for the screws to allow easy access to the transformers.

The voltage is selected by simply removing the wires from the default primary taps of both transformers and installing them on the primary taps for the desired voltage. Taps are provided for 120 to 600 Vac to satisfy any required North American market application voltage. The factory default position is 600 Vac.

Figure 16. North American Market Voltage Selection Terminals (Shown Connected to the 120 Vac Taps).

3.3.2International Voltage Selection (208, 220, 240, 380, 415, and 600 V 50-60 Hz).

The international market voltage selection panel is a multi-tap, enclosed transformer mounted in the transfer switch enclosure. Seven front accessible voltage taps from 208 to 600 Vac satisfy any required international market application voltage. A quick- change capability from one voltage to another is provided by a small disconnect plug. The factory default position is 600 VAC.

3.4 Logic Panel

The logic panel provides the intelligence and supervisory circuits which constantly monitor the condition of both the Source 1 and Source 2 power sources, thus providing the required intelligence for transfer operations (Figure 17). Detailed information is pre- sented in a separate document:

•ATC-600 Instruction Book (IB ATS-I005 - open transition only)

•ATC-800 Instruction Book (IB ATS-CI03 - closed transition only)

Figure 15. Voltage Selection Panel

WARNING

WHEN CHANGING THE SELECTED VOLTAGE, THE POWER MUST BE REMOVED FROM THE TRANSFER SWITCH AND THE WIRES MUST BE MOVED ON THE TAPS OF BOTH TRANSFORMERS.

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 Introduction Preliminary Comments and Safety PrecautionsGeneral Information Design Configuration Typical Load Transfer Switch Switching Device Type SchematicWithstand Ratings Typical Bypass Isolation Switch SchematicMagnum Transfer Switch Configurations Magnum Fixed and Drawout Switching DevicesGeneral 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 StorageSwitch Interlocks Open Transition Only Power PanelDrawout Interlocks Left Side View with Panels Removed Logic Panel Voltage Selection PanelDrawout Mechanism Neutrals FeaturesRelay Auxiliary Contacts Enclosure Transfer Switch Equipment EnclosuresStandards Installation and WiringMounting 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 AdjustmentOperation WiringEngine Start Connection Close Switch by Pushing Close Button Automatic Transfer SwitchInstalling a Drawout Switching Device Drawout and Fixed Switching DevicesSwitching Device Positioning Switching Device in the Connect Position Levering and Position Indication Fixed Switching DeviceSwitching Device Operation Operation of the Bypass Isolation Transfer SwitchOperator Panel Automatic Operation Bypassing the Transfer SwitchSource 1 to Source 1 Bypass Source 2 to Source 2 BypassInto Its Source 2 to Source 1 Bypass Open Transition Only Manual Operation When in Bypass Mode Testing and Problem SolvingTesting Problem SolvingTransfer Switch Will Not Automatically Transfer to Source Transfer Switch Appears InoperativeTransfer Switch Will Not Automatically Recharge Switches Periodic Maintenance Procedures MaintenanceMaintenance 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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