Instructional Booklet

Page 24

Effective: March 2007

Fixed and Drawout Magnum Transfer Switches

Red

Yellow

Green

Figure 32.Carriage Label Showing DISCONNECT, TEST, and CONNECT Positions of the Recessed Cover.

6.1.2 Levering the Switching Device

The switching device is now ready to be levered. With the switching device OPEN, the levering device access door can be raised. The levering device is hand operated using a standard 3/8” square drive and ratchet, which is not provided (Figure 33). As long as the access door is raised, the switching device is held in the “trip free” condition. Begin by rotating the levering-in screw to the full counter clockwise (DISCONNECT) position.

Figure 33.Levering and Position Indication.

Close the compartment door and begin levering the switching device into its different positions using a clockwise ratcheting motion. When the switching device is levered fully to the DISCONNECT or CONNECT position, the levering shaft hits a hard stop. Do NOT exceed 25 ft lb (33.9 Nm) of torque or the levering mechanism may be damaged.

NOTICE

THE SWITCHING DEVICE CAN BE LEVERED WITH THE COMPART- MENT DOOR OPEN OR CLOSED, BUT IT IS ADVISABLE TO CLOSE THE DOOR PRIOR TO LEVERING.

The position of the switching device within its compartment is indicated by color coded position indicators (See

Figure 29 through 32):

•Red=Connect;

•Yellow=Test; and

•Green=Disconnect.

To remove the switching device from its compartment, follow the procedure just described using a counter clockwise ratcheting motion.

NOTICE

THE SWITCHING DEVICE MECHANISM IS INTERLOCKED SUCH THAT CHARGED CLOSING SPRINGS ARE AUTOMATICALLY DIS- CHARGED IF THE SWITCHING DEVICE IS LEVERED INTO OR OUT OF THE CELL. DISCHARGE TAKES PLACE BETWEEN THE DISCONNECT AND TEST POSITION.

6.2. Fixed Switching Device

The Magnum fixed type switching device differs from the drawout version in that it has no levering device, primary disconnects, and secondary disconnects (Figure 34). In addition, a fixed switching device does not have a standard feature to hold the switching device in a “trip free” position

Figure 34. Typical Magnum Fixed Switching Device.

Fixed switching device terminals have holes for making bolted hor- izontal primary bus connections. Adapters are available for mak- ing vertical primary bus connections. Secondary connections can be made through standard terminal blocks or a special connector compatible with the drawout switching device’s type secondary connector. Both secondary connection devices are mounted at the top front of the switching device.

For more information visit: www.Eaton.com

IB01602011E

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Eaton Electrical Magnum Transfer Switch manual Fixed Switching Device, Levering and Position Indication
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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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