Operating proceduresTester operating procedures have been grouped threefunctional groups; Control Tests, Flux-Shift Tripper Tests, andBattery Tests.Each group of tests is preceded by pre-test setupinstructions which specify any required settings for thetester and the device under test. Verify these settingsbefore starting any tests. Upon completion of testing, returnthe control settings to the desired operating conditionsbefore returning the control to service.ote:N A 5 K ohm resistor is required to complete certainprocedures detailed in this bulletin.For specific information regarding the operation andadjustment of Tri-Phase and TPG Controls refer to ServiceInformation Bulletin S285-75-1, Tri-Phase, TPG, and TPGw/SCADA Electronic Control Installation and OperationInstructions.WARNINGHazardous voltage. Always use a hotstick when workingwith this equipment. Failure to do so could result incontact with high voltage, which will cause death orsevere personal injury. G108A.0WARNINGThis equipment is not intended to protect humanlife. Follow all locally approved procedures and safetypractices when installing or operating this equipment.Failure to comply can result in death, severe personalinjury, and equipment damage. G102.1CAUTIONEquipment misoperation. This device must be operatedin dry environments only. So not operate itw in rain,snow, or sleet. Failure to comply can result in equipmentmisoperation and possible personal injury. G141.0Testing in-service VFI unitsThe following procedures must be followed if anin-service VFI padmounted switchgear unit is to be testedwith the VFI tester apparatus.Side-hinged units with TPG controls1. Open the VFI Switches2. Attach the power cable to the VFI tester and plug it intoa grounded, three-prong 120 VAC outlet.IMPORTANTThis device must be connected to a properly grounded,3-wire 120 VAC power source to ensure safe and reliableoperation. Do not operate it using a “floating” power sourcesuch as a portable generator.3. Connect the 14-pin female/14-pin male interrupterinterface cable (Item 1) to the VFI tester at theinterrupter port. Refer to Figure 4 for steps 3 through 8.4. Connect the 19-pin male/14-pin female control interfacecable (Item 2) to the VFI tester at the Control port.5. Break the connection between the control and VFI unitby disconnecting the VFI control cable (Item 3) fromthe male receptacle located on the outside of the TPGcontrol enclosure.WARNINGHazardous voltage. Open the switch associated with thecontrol before attempting to disconnect its control cable.Failure to do so can result in contact with high voltagepulse (300 V peak) from the CT protection circuit, whichcan cause death or severe personal injury. T287.06. Connect the 14-pin male connector end of the testerinterrupter interface cable (Item 1) to the 14-pin femaleend of the padmount cable (Item 3) originating from thefront plate of the VFI unit under test.7. Connect the 14-pin female connector end of the VFItester control interface cable (Item 2) to the malereceptacle of the TPG control enclosure.8. Proceed with the testing procedures as detailed in thisservice bulletin.To return the unit under test to service:1. Verify that the VFI Switches under test are in the openposition.2. Turn off the VFI tester.INPUTPOWER120 VACTESTCONTROLRESETTESTPower SystemsBATTERYCONNECTORCONTROLEXTERNALINTERNALTO CONTROLTO INTERRUPTERPHASE SELECTTEST SELECTMETER JACKSCURRENTTRIPPER TESTBATTERY TEST4-30A30A 60A 120A 240A1X4-30A2XCONVENIENCEOUTLET120 VACC-PHASE TRIPPERB-PHASE TRIPPERA-PHASE TRIPPERTESTTRIPPERSTRIPPERSTesterVFION ON ON ONONAØ BØ CØItem 1InterrupterInterfaceCableItem 2- ControlInterface Cable14-pin femaleconnector atcable end14-pin maleconnector atcable end19-pin male connectorat cable end14-pin femaleconnector atcable endItem 3VFIControlCableTPGControlEnclosureFigure 3. Connection of the VFI tester to side-hinged VFIunits with TPG controls.Operating Instructions MN285001EN December 2018 5