Recent content by vinnygalbo

I have had 2 VFDs on the same piece of equipment go bad by an apparent line to line short circuit. It destroyed the line contactor, tripped the motor circuit breaker, the feed circuit breaker, and the main circuit breaker feeding the panel. Motor was meggered line to line, and line to ground...

The operating speed of every successfully installed 3-phase induction motor depends on the number of pole pairs created by the winding arrangement and the applied frequency. The motor will also have a small speed variation depending on the shaft load. The actual number of turns in each coil in...

The speed changes by virtue of changing the number of magnetic poles in the stator. The number of poles is always an even number: 2, 4, 6, 8, etc. In the 50Hz world the synchronous speeds are 3000 rpm, 1500 rpm, 1000 rpm, 750, rpm, and so on. Induction machines run slightly below synchronous...

I have the DSC 1832 Power Series panel with an Envisalink EVL 4 and all of my hardwired magnetic contacts work and report correctly with the DSC Alarm Plugin. So, I suspect you'll not have any problem with that Sentrol contact you've referenced.

I have a sentrol industrial 1082-N surface mount magnetic switch with wire leads https://www.clrwtr.com/Products/1082-N . I'm not sure which wire is the + and which wire is the -? Any help would be greatly appreciated.