Standby Transformer Troubleshooting.

[tech2014]

How common is it for transformers to fail?

[tom66]

Re: Standby Transformer Troubleshooting.

Very, very rare. Exceptions apply for the high voltage inverter transformers, which generally fail due to intra-winding insulation failure (due to the high intra-winding voltages.)

A work colleague of mine told me that they didn't like to have transformers that bridge the primary-secondary barrier fail, for any reason, because it could compromise the isolation safety of the equipment. There's only a few layers of insulating tape between the copper windings in a transformer. A flash over or arc inside it could burn through that insulation, creating an isolation fault and an electrocution hazard.

[tech2014]

Re: Standby Transformer Troubleshooting.

thanks Tom.