Customized Supplier for XJM7-J Measuring box (Infrastructure Energy Measurement Box) for Milan Importers

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Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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USE:

XJM7-J metering box (infrastructure power metering box) is suitable in power supply system with AC 50HZ, rated voltage 380 / 220V , as the power measurement in construction site.

 

Meet GB7251.1-1997 and GB7251.3-1997 standards.

3C certificate:

XJM7-J Mgy Measurement Box)-2





after Manual Close-Open successfully tested, we continued to local electrically test. Sorry for bad English :D



Had a look at this three phase two speed system as it wasn’t cooling.

It was bringing the condenser fan on but the compressor didn’t run in either speed. I traced the fault to the compressor interlock timer which is a start delay timer in the feed to the contactor coils via the hi/lo speed relay, which is the 8 pin one in the vid.

Took me a bit of time to get my head round the 24v ac control circuit as most things i work on have a 240v & N control circuit!

Luckily i had a Supco timer on the van that would work on 24v so i fitted and tested that.

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