[Hallb-engineering] DynaPower Box Supplies

John Segal segal at jlab.org
Wed Jan 12 14:15:56 EST 2011

Danfysik spun off the transducer portion of their business.  You still 
go through GMW for it, though.

Bill Merz wrote:
> If the problem is that you need a replacement transductor head or 
> electronics you should be able to purchase something from Danfysik as 
> a drop in as long as the "Current signal" is compatible with the 
> Dynapower regulator. You would need to buy a complete 
> system...transductor head and electronics, but it should just work 
> fine. Hitek also makes a precision transductor which may also work if 
> you need 10PPM type of performance.
> Bill
> On 1/12/2011 2:00 PM, Krister Bruhwel wrote:
>> Hello,
>> I had a ZFCT chassis fail in November of 2010 on one of our Moeller 
>> Power Supplies (8000A 40V).  As our spare needed a mounting bracket 
>> that wasn't included, I robbed the chassis from an unused supply (the 
>> downstream Moeller because we are running TPE) .  Upon asking 
>> DynaPower for repair/replacement, I was met with some ambiguity and 
>> they would look into the problem.  Today I talked with Peter Abele, 
>> the Senior Sales Engineer, and his message was that they are still in 
>> the power supply business but they can no longer repair or 
>> manufacture the ZFCT chassis' or heads.  He will work with us on a 
>> long term solution of trying to retrofit something (undefined as of 
>> yet) or using shunts if the accuracy is sufficient.
>> This message may impact anyone that needs to support a box supply 
>> from DynaPower.  At present Hall B does not have a spare ZFCT 
>> chassis.  After I get a bracket made, I will need to test the unused 
>> spare, to ensure we can use both Moellers for upcoming experiments.  
>> If anyone has a ZFCT chassis that I can use as a spare, please let me 
>> know.   If anyone knows of options that we can utilize in the short 
>> or long term, please let me know.   Its important for Hall B to 
>> understand that this may affect experiments in the future as we have 
>> no spares at present.
>> These supplies are to be used through the 12GeV upgrade and a long 
>> range solution is needed.
>> I will advise as more details become relevant, and please forward 
>> this message to concerned parties.
>> Regards,
>> Krister Bruhwel

John(Jack) Segal
Hall A Instrumentation, Controls and
Detectors (ICD) Coordinator
Thomas Jefferson National Accelerator Facility
12000 Jefferson Avenue
Suite 12
Newport News, VA 23606-4323
Phone: (757) 269-7242
Cell: (757) 320-9977

More information about the Hallb-engineering mailing list