IL01602007E For more information visit: www.eatonelectrical.com October 19, 2004Harness Kit Installation for Utility Sensing GeneratorsInstruction LeafletNew InformationDescription PageInstallation Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4For more information visit: www.eatonelectrical.com IL01602007EInstruction LeafletPage 2 Effective:October 2004Harness Kit Installation for Utility Sensing GeneratorsInstallation ProcedureThis universal harness kit provides the general instructions and hardware needed to convert an engine start transfer switch to a utility sensing transfer switch.An engine start transfer switch contains an intelligence system that uti-lizes engine start contacts to initiate a generator start when the utility power fails or falls below a preset voltage.A util-ity sensing transfer switch is used with a generator that senses utility voltage and begins its own start sequence when the utility power fails or falls below a preset voltage.For instructions for your specific generator, please refer to the literature supplied with the unit.Step 1: Turn the utility (Source 1) power off and turn the generator (Source 2) control selector switch to the OFF position before attempting to connect the generator to the transfer switch.Step 2: Disconnect the two (2) ends of the wires connected to the terminal block (or point at which the control wires from the generator are landed).If possible, remove this landing point from the transfer switch.DO NOT CUT ANY WIRES, AS THEY WILL BE REUSED.Figure 1. Removing Wires from the Generator Connection Point in a Transfer Switch.Step 3: If the transfer switch supplies an N.C. engine start contact in addition to the N.O. contact that is used with an engine start, move the wire from the engine start contact that is in the N.O. position to the N.C. position. For instructions on your specific transfer switch, please refer to the literature sup-plied with the unit. Figure 2. Engine Start Contacts on a Typical Transfer Switch.Step 4: Mount the supplied utility sensing fuse block where it can be easily accessed (if the generators control wire landing point was removed, mount the fuse block in the same general location).Use the two (2) 8-32 x 3/8 screws and two (2) 0.164 lock washers supplied to secure the fuse block to the inside of the transfer switch (see the Parts List on page 4 for a complete list of supplied hardware).Figure 3. Utility Sensing Fuse Block Installed in a Transfer Switch.WIRES TOREMOVEN.O.N.C.IL01602007E For more information visit: www.eatonelectrical.comInstruction LeafletEffective:October 2004 Page 3Harness Kit Installation for Utility Sensing GeneratorsStep 5: Install the two (2) supplied fuses in the utility sens-ing fuse block.Figure 4. Fuses Installed in the Utility Sensing Fuse Block.Refer to the wiring diagram in Figure 5 and follow steps 6 - 8 below to wire this kit.Figure 5. Wiring Diagram.Step 6: Using the necessary hardware, reconnect the two (2) loose wires that were disconnected and moved in Steps 2 and 3.Connect one (1) wire to the B Phase of utility.Remove or loosen one (1) screw from one (1) pole of the fuse block mounted in Step 4.Insert the other wire under this screw and tighten (if preferred, a ring terminal may be crimped to the wire before attaching it to the fuse block).Step 7:Connect one of the supplied wires to the other pole of the fuse block by removing or loosening one (1) screw from the second pole of the fuse block.Insert the wire under this screw and tighten (if pre-ferred, a ring terminal may be crimped to the wire before attaching it to the fuse block).Step 8:Connect the other end of the wire to the A Phase of utility.CONNECTING THE GENERATORS UTILITY SENSING DIRECTLY TO THE UTILITYS A AND B PHASES WITHOUT GOING THROUGH THE N.C. CONTACTS MAY RESULT IN THE SHUT DOWN OF A LOADED GENERATOR, WHICH COULD RESULT IN A GENERATOR MALFUNCTION.Step 9: Connect the two (2) utility sensing wires from the generator to the fuse block. Figure 6. Generators Utility Sensing Wires.Step 10: Apply utility (Source 1) power and place the genera-tor control selector switch in the AUTO position after the generator has been connected to the transfer switch.Test the system for proper func-tionality by following the testing procedures detailed in both the transfer switch and generator literature.TO UTILITYSENSING240/208 VACON GENERATORN1 (A PHASE)N2 (B PHASE)N. C. CONTACTIN TRANSFER SWITCH'SENGINE START CIRCUIT WARNINGUTILITYSENSINGWIRESInstruction LeafletPage 4 Effective:October 2004Harness Kit Installation for Utility Sensing Generators 2004 Eaton CorporationAll Rights ReservedPrinted in USAPublication No. IL01602007E/TBG00084October 2004Parts List:Qty. Description2 Fuses (2 A, 600 Vac)1 Utility Sensing Fuse Block3 Wires (16 AWG, 600 Vac, 30 in length)2 0.250" Receptacles (Yellow)2 0.187" Receptacles (Blue)4 Ring Terminals2 Spade Terminals2 Male Connectors2 Female Connectors1 3-Pin Male Plug (White)2 Screws (8-32 3/8)2Lock Washers (0.164)6 Wire Ties1 I.L. 01602007E Instruction SheetNote: Hardware has been supplied with this kit accommodate the connection of a variety of transfer switches.Therefore, extra hard-ware will be left after the installation is com-plete.Eaton Electrical1000 Cherrington ParkwayMoon Township, PA15108-4312USAtel: 1-800-525-2000www.eatonelectrical.com