4Type VFI, Fluid-insulated SwitchgearINSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS MN285006EN March 2018WARNINGHazardous 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 0The Type VFI switchgear is equipped with hotstick-operablehandles that may be located on the tap- and/or source-sideof the unit. The VFI switchgear can be configured for eithersingle-phase or ganged three-phase operation (all threephases operated simultaneously with a single handle).The operating handle(s) (shown in Figure 3 and Figure 4)provide convenient push-to-close and pull-to-open operation.The operating handle(s) may be padlocked in the openposition. When configured for single-phase operation, eachphase trips independently; however, the control may beconfigured to provide simultaneous tripping of all threephases.WeightThe weight of the unit is shown on the nameplate. Makesure that lifting equipment used is rated sufficiently to safelyhandle the switchgear.Special certificationsUnits can be provided with a UL® listing and labelingdepending on the features specified. Please ensureappropriate labeling is provided prior to installation forinstances where a UL® listing is required.Figure 3 VFI switchgear operating handle, three-phaseganged operationFigure 4 VFI switchgear operating handles, single-phase operationInstallation procedureWARNINGThis equipment is not intended to protect humanlife Follow all locally approved procedures and safetypractices when installing or operating this equipmentFailure to comply can result in death, severe personalinjury, and equipment damage G102 11. Check fluid level Make sure the fluid in the switchgeartank is at the proper level by checking the fluid levelindicator on the front plate(s). Some units have fluidlevel indicators on both source-side and tap-side frontplates; both indicators should be at the proper level.WARNINGThis equipment relies on dielectric fluid to provideelectrical insulation between components The dielectricstrength and moisture content of the fluid must bechecked on a regular basis, as part of the routinemaintenance inspection, to ensure that it is at orabove minimum dielectric requirements and below themaximum moisture content Use of this equipmentwith dielectric fluid that does not meet requirementscan result in internal flashovers that will damage theequipment and can result in death or serious injury G107 32. Test fluid dielectric strength and moisture contentIf the switchgear has been stored for some time oris being relocated, perform these tests on the fluid inaccordance with ASTM-approved testing procedures.