— 6 —
2. To test elbows or bushings on dead-front URD equipment, remove the hook
probe and install the proper elbow adapter or bushing adapter on ARVI.
Testing of elbows can be accomplished by two methods:
a. Recommended procedure (one person required): Secure an insulated feed-
thru device in a parking stand on the dead-front transformer or switch.
Pull elbow with appropriate hot line tool and install elbow on feed-thru
device. Install bushing adapter on ARVI. Insert bushing adapter into
feed-thru bushing to check elbow/cable for voltage. Insert bushing adapter
into the apparatus bushing to check bushing for voltage.
b. Optional procedure (two people required): Operator #1 pull elbow with
elbow-puller tool, then orient elbow so it is accessible with ARVI. Operator
#2 install elbow adapter on ARVI, then insert elbow adapter into elbow to
check elbow/cable for voltage.
1. Due to the close proximity of energized parts and grounded surfaces, probes
must not be used when using the ARVI on live-front URD equipment because
probes could either bridge from phase-to-phase or phase-to-ground or suffi-
ciently reduce clearance to cause flashover. Therefore the probes must be
removed from the tool. NOTE: A small hex-head machine screw (1/4-20UNC
x 3/8 long) could be inserted to protect the female thread.
Use proper elbow and/or bushing adapter when testing dead-front URD
equipment.
Failure to use proper adapters could result in personal injury or damage to
equipment.
Bushing Test
Feed-thru
device
(not
furnished)
Elbow/Cable Test
Bushing Adapter
!
WARNING
