Switchgear / Switchboards
Switchboard Bus - Ductor + Megger
Practice switchboard bus testing with the discipline a field tech needs before applying current or voltage: isolation, metering/fuse removal, breaker position, load separation, bus joint resistance, and insulation checks.
Ductor A-phase bus joint
Use the micro-ohmmeter profile and place leads across the A-phase bus joint.
Current Objective
Ductor A-phase bus joint
Real values should be compared phase-to-phase and joint-to-joint; one hot joint usually stands out from the group.
Why
A ductor/DLRO-style test finds loose, oxidized, or overheated bolted bus connections.
Safety
Bus must remain de-energized and grounded per procedure before contact testing.
Tip
Clean the landing spot enough for a solid clamp bite, but take photos before disturbing heat evidence.
Safety Hold Point
This simulator starts after the real-world LOTO and live-dead-live check. In the field, use the properly rated tester, prove it on a proving unit or known live source, test for absence of voltage, then prove it again before installing test leads.
Loadout
Test Bench
Required Now
Test Instrument
RequiredBreakers
RequiredMetering / Fuses
RequiredLoads
RequiredSim Workbench
Lead Placement
Select a lead, then hit the highlighted target nodes.
Expected for Current Step
Red test lead: A bus left joint. Black test lead: A bus right joint. Lead order is flexible for this check.
Animated Board
Tap scene targets or use the target grid below.
Bus joints
Reference
Insulation
Red test lead
Not placed
Black test lead
Not placed
Step Checklist
Field Intel
Avoid sending test voltage into meters, control circuits, SPDs, CPTs, or loads.
Use a Megger DLRO/AEMC-style micro-ohmmeter profile for bus-joint resistance.
Use a Megger/AEMC-style insulation tester only after the load and metering paths are controlled.
Mistakes Tracked
No mistakes yet. Good simulator runs come from correct setup, lead placement, and sequence discipline.
Readings
Correct the setup, place leads, and run the current step to generate simulated readings.
Profile History
No saved attempts yet. Completed reports show up here and on the simulator landing page.