EGII W3 Tuesday

What needs to be done before leaving the work site that involves work performed at a junction pole?

pg.52

• Phase check

• Amp check

• Make sure house meters are on

• Voltage check

What should be be recorded before starting work on a junction pole where the jumpers will be removed?

pg.52

• Where is lunch?

• Test phasing sticks

• Phase sequence

• Rotation at the meter

What would happen if a normal open switch is not phased correctly and closed?

pg.52

• phase to phase fault

• nothing

• extremely high voltage

• Frequency drop

What is the name for a high voltage voltmeter used for proving phase sequence?

pg.53

• Multimeter

• Volt meter

• Phasing meter

• Rotation meter

What is the name of the part of the phasing sticks that does not have the meter attached to it?

pg.53

• Meter probe

• Insulated jumper

• Phasing probe

• Capacitive test point

What is the first step in the steps taken to prove phase sequence?

pg.54

• Test phasing sticks

• Verify correct voltage

• Confirm proper phasing across open point

• Record phase sequence

What is the second step in proving phase sequence?

pg. 54

• Test phasing sticks

• Verify correct voltage on both sides of open point

• Confirm proper phase sequence

• Record phase sequence

What should the phase meter read across an open point if phase sequence is correct?

pg.54

• System voltage

• Phase to ground voltage

• No voltage

• 1.732 times higher then phase to ground voltage

If we read a difference in potential across an open point, what must we do?

pg. 55

• There should be a difference in potential across the open point

• Start troubleshooting

• Roll jumpers at the open point

• Nothing. We want a difference in potential across the open point

What should we do once we have confirmed proper phase sequence across an open point with the phase meter?

pg.54

• Test the phase meter

• Close the switch

• Cross phase check

• Phase to ground check