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Have a memory of a timer relay device that consisted of a synchronous motor and a clutch with associated contacts, believe it was manufactured by a company called King of Prussia,(that being the only name stamped on the timer)the device measured about 5 inches X 5 inches X 4 inches and had a...

Many thanks danw2 xactly what the doc ordered.

Having problems sighting flame scanners on multi-burner boiler (gas/ oil fired)because of discrimination problems. Does anyone manufacture a flexible? sighting tube that can be adapted to closely supervise burner flame. Tube would be located in combustion air duct with operating temperature of...

probably didn't frame the question correctly was wondering if the unit itself had a name so if for example a digital read-out connected to a flame scanner went from 350 to 450 in response to an increase in firing rate, what would be the unit description? Hope the question makes sense.

When using for example an Iris or Fireye burner management system the devices usually come with a digital read-out display that monitor flame conditions, when firing with natural gas the read-out display is much lower than when firing with number 2 oil and changes with the firing rate, Is there...

A 480volt 3 phase 700Kva generator parallels onto a utility via a General Electric THC series Powerbreak switch, should the generator wires be connected to the Line side of the switch or does it even matter? Presently the Utility is connected to the Line side. Thanks in advance.

jraef many belated thanx for info

Thanx Compositepro terrific suggestion and will probably use your idea. problem is space considerations...was hoping someone made a programmable plug in miniature device....but guess not.

thanks for response Output can be either a dry contact or 120vac Thought maybe someone manufactured a programmable plug in DIN rail mountable device. Salesman from SSAC said only option he could think of would be a micro PLC.

Apologies if this duplicates an earlier request. Require a four input one output solid state switching device that switches on only when all inputs (120vac)are present and remains on when all or only one input is present and switches off when no inputs are present. If someone can direct me to a...

Stupid question... is it kosher (NEC).. to install a 250 volt 30 amp twistlock receptacle to a 120volt 20 amp branch circuit..It sounds like a violation but cannot find an article that would refer to such an arrangement. Thanx in advance

If the wires from a rotating rectifier assembly to the main rotor of a three phase synchronous generator are reversed what is the effect on the line voltage of that generator ? Many thanx in advance (hoping to avoid an embarrassing situation)

Hi scottyUK took your suggestion and adjusted PF to about 0.9 So far generator not tripped out at higher power levels. thanks again for assist.

hello again and thanks, the PF controller is a Basler250 running in PF control, I was under the impression that if I increase the excitation the PF will decrease from unity to a value less than one and that this will place more of a reactive load on the generator (subtracting from the utility...

Many many thanx for suggestions, machine runs in power factor control via a beckwith scp 250 PF controller, set at about 0.7 ( figure as long as I don't exceed generator current limits should be OK, yes?) Is it possible condition of bearings could effect air gap to extent it trips gen breaker on...

Got a steam turbine 700kva 480volt generator that runs in parallel with utility, when loaded to about 65% capacity generator breaker opens and phase undervoltage trip is indicated on beckwith m-3420 generator protection device. Only occurs when generator capacity exceeds 65%. Any suggestions...

many many thanks to respondents.....had sneaky suspicion it wasn't a baseball term.

came across this term in basler directional overcurrent relay, what is it, what causes it and if objectionable how do you correct it? many thanx in advance.

thanks for suggestions, generator currently on line synched to utility, acting normally..In island mode Basler power factor controller redundant, excitation provided by AVR, I guess the question I'm asking is would the symptons described be caused by under-excitation or over-excitation. My boss...

Synchronised a 700 Kwatt steam turbine driven generator, (480v) to the utility with peculiar results...the voltage went to 510 volt the PF to about 0.2 the current to 900 amp with little indication of real power on the wattmeter before tripping on overcurrent. The excitation is provided through...