Lineman's Reference – URD is the latest app from Digital Apprentice that will teach linemen and apprentices the basics of underground distribution systems.

Learn how to:
– Isolate bad cable sections
– Hipot cable sections
– Isolate and change bad pad-mounted transformers
– Troubleshoot underground outages
– Switch Underground Distribution Loops

Primary Training Labs:
– Fault Indicators
– Cable Isolation
– Hipotting
– Transformer Isolation

Troubleshooting Labs (with optional quizzes):
– Beginner (Single Phase)
– Intermediate (Single Phase)
– Advanced (Three Phase & Single Phase)

Devices Labs – Break down and inspect the components of URD equipment:

– Single Phase Padmount
– Three Phase Padmount
– Load-Break Elbows