Syncrosope

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tom baker

tom baker

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Looking for a source for a Syncroscope to sych two 3 phase systems. Are they available in a portable version?
 
Would a lamp connected across similar phases work? ie. phase A of one system to phase A of the other.

D.
 
That would not give you the phase angle or the frequency?

Could you just get one and put it in a case? Make up leads etc...?
 
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I think they did use a set of lights at one time to sync generators. You could set them up so you were in sync when the lights were out, or when they were at full brightness.
From a thread on eng-tips.com
Did you ever see the way we synchronized in the old days, with a set of three light bulbs? We'd adjust governors until the beat frequency between the two sources was close enough that the lights slowly cycled from bright to dark and back. Once this little light show was sufficiently stable, we'd time the dark period once and the next time the lamps went dark we'd wait half the period we timed and slam the tie breaker shut. It was quite a thrill, especially when the machine was big, the other source was the utility, and you missed by a few seconds....
Click to expand...
 
don_resqcapt19 said:
I think they did use a set of lights at one time to sync generators. You could set them up so you were in sync when the lights were out, or when they were at full brightness.
From a thread on eng-tips.com
Click to expand...

Both our Cogen units have high dollar sync monitors and right above them are lamps, when they are dark you are synchronized.
 
Anoth option would be buying a switchboard class analog synchroscope from Crompton or Yokogawa and hooking it up as needed, although it's not as elegant as the woodward option.

I assume this is not for an application with a permanently installed generator? Do arc flash rules prohibit phasing with a voltmeter? Presumably if you can safely hook up a portable synchroscope you have instrument transformers, so you could use a voltmeter instead.
 
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