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We have a couple of ACE2000 units in our group. As I recall, these products were taken over by Rochester Instruments out of New York (I think that they are part of AMETEK now). The phone number for Rochester Tech Support that I have from a few years ago is 800-374-4835. Good Luck

Thanks for your helpful suggestions.

We are putting up 2-1800kW Wind turbines and connecting them to a 12.5kV distribution feeder. I need help from anyone out there on the best way to set up fault protection on these units and on our feeder breaker. From what I have heard so far, these turbines can be considered like a large...

It's been my experience with distributed generation that the smaller units are usually not rated to handle the line to ground short circuit currents that they can deliver, so their neutral needs to be impedance grounded. We set the 51N relays on the generator sensitive enough to trip first on...

We have developed spreadsheets to estimate manhours, but we still go out and ask contractors for estimates on jobs before going out to bid. (The actual cost often depends on the time of year you are asking for a price.) Most of them are eager to provide some input, especially if it gives them a...

I've lived with PSSE (and PSSU) and can sympathize with the user unfriendliness of those products. We have switched over to CYME,(CYMDIST and CYMTCC), and have had a lot of success with it. The company is especially responsive to questions and will help work out problems. We looked at several...

Thanks for the helpful tips.

I've been asked to put together a talk for our line supervisors on proper selection of instrument transformers for metering and for relaying purposes. (It sounds like vendor reps are visiting them and getting them confused on the facts.) I have some old books on inst. trfmrs that I can...

I'm no lightning expert, but how about checking for sufficient spacing between the shield wires and the phase wires. We've had troubles where the lightning intensity is high enough that we've had to elevate the shield wires along several spans to avoid getting flashovers. Check RUS or TVPPA for...

We have been having debates on how sensitive to set ground fault relay settings (instant. and time delay) for overhead distribution feeders. Any good guidelines or practical experience to share would be appreciated. These forums have been tremendously helpful around our office.