Generac 9344 — Testing Stator Insulation Resistance (Hi-Pot)
Testing & diagnosis · Stator windings
For the Generac 9344, from the Generac service manual.
Applies to: Generac 9344
Before you start
- Meggers and Hi-Pot testers deliver high voltage to windings being tested; do not touch the generator, test leads or winding during tests.
- Before testing insulation resistance, disconnect all electronic components, regulators, diodes, surge protectors and protective relays.
Procedure
- Connect ends of stator leads 11, 22, 33, 44, 2, 5 and 6 together, isolated from ground.
- Connect red Hi-Pot test lead to bunched terminal ends; black lead to clean frame ground.
- Plug tester into 120 volts AC receptacle; set Voltage Switch to 500 volts.
- Turn tester switch ON; check Pilot lamp is ON.
- Set Voltage Switch to 2000 volts and watch the Breakdown lamp; after 1 second turn tester OFF and reset to 500 volts.
Tools required
- Hi-Pot tester or megohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Do not apply tester voltages longer than 1 second
Full service-parts list: Generac 9344 →
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.