Transfer Switches - Eaton Cutler Hammer — Section 4: Installation and Wiring

A Transfer Switches - Eaton Cutler Hammer service procedure — check it applies to your exact model before use.

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Procedure

1. 4.1 General Eaton transfer switches are factory wired and tested. Installation requires solidly mounting the enclosed unit and connecting the power cables and auxiliary pilot circuits. Physical mounting proce- dures and power cable connections are covered in this section. All other required wiring or electrical connection references are covered in a separate Customer Wiring Diagram packaged with the transfer switch. Locate the wiring booklet, review it, and keep it readily available for reference purposes during installation and testing. Once a transfer switch is properly installed and wired, it should be mechanically and electrically checked for proper installation and operation. The procedures for these initial mechanical and electri- cal checks are outlined in Section 8.1 of this instruction manual.
2. 4.2 Mounting Location Choose a location that offers a flat, rigid mounting surface capa- ble of supporting the weight of the enclosed transfer switch equipment. Avoid locations that are moist, hot, or dusty. How- ever, Eaton offers enclosure designs that can be used in special environments. If there are any doubts as to the suitability of the location, discuss it with your Eaton representative. Check to make certain that there are no pipes, wires, or other haz- ards in the immediate area that could create a problem. The pan- els provide ample room for rear cable entry from top, bottom, and sides. At no time should cable be routed to retard the action of relays or cover the logic in a way that restricts adjustments. Maintain proper electrical clearances between live metal parts and grounded metal. For installation and maintenance purposes, the Source 1 and Source 2 power sources must have an overcurrent protective device upstream of the transfer switch, unless overcurrent protec- tion is integral to the switch. The dimensions of the transfer switch are an important consider- ation in determining proper location selection. WARNING BE CERTAIN THAT THE SOLID STEEL POWER PANEL SHIELDS ARE PROPERLY INSTALLED BEFORE THE TRANSFER SWITCH EQUIP- MENT IS PUT INTO SERVICE. THE SHIELD PROVIDES PROTECTION FROM DANGEROUS VOLTAGES AT THE LINE AND LOAD TERMI- NALS WHEN THE EQUIPMENT IS IN OPERATION. FAILURE TO DO SO COULD RESULT IN PERSONAL INJURY OR DEATH. IB01602011E For more information visit: www.Eaton.com Instructional Booklet Effective: March 2007 Page 17 Fixed and Drawout Magnum Transfer Switches
3. 4.3 Unpackaging and Inspection Proceed with the following four steps:
4. Step 1: Carefully uncrate the transfer switch. If damage is visible, please contact your local Eaton sales representative or the factory.
5. Step 2: Open the door and visually verify that there are no broken or damaged components or evidence of distorted metal or loose wires as a result of rough handling.
6. Step 3: A label on the door provides specifications for your trans- fer switch. Verify that these specifications comply with your requirements.
7. Step 4: Remove any braces or packing used to protect the trans- fer switch or internal components during shipping.
8. 4.4 Mounting Procedure With the enclosed transfer switch equipment unpacked and ready for mounting, proceed with the following steps:
9. Step 1: Mounting and cabling access is best provided by remov- ing side and rear covers (when applicable). See Section
10. 9.3 for cover removal instructions.
11. Step 2: Gently maneuver the switch into its location using all of the supplied lift brackets.
12. Step 3: Bolt the enclosure to the base. Use separate cleats (Option 42 only) if Seismic Uniform Building Code (UBC)

Source: manual:Magnum ATS Instructions.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.