[Hallb-engineering] R2S1 DCLV Blown fuse replaced, OK for now, but still draws 2 amps vs 1.2 amp normal
George Jacobs
jacobsg at jlab.org
Tue Nov 10 16:57:43 EST 2009
R2S1 DCLV had a blown fuse. Current dropped from 22.78 to 20.72. I made
an access and replaced #13 (R2S1 STB 6.2) fuse. Current returned to near
the original value.
This is OK for now, but may blow again any moment. The original fuse was
a 3.15 amp size, replaced with the same. Typical current on one of these
fuses is ~1.2 amps, so this one is drawing ~70% more than normal, so
it's reasonable to expect it to blow again.
If it blows again, it should be considered a new permanent hole. This
can be repaired in January during the opening when the CLAS is split.
--
George Jacobs
TJNAF
12000 Jefferson Ave.
Newport News, VA 23606
(office)757-269-7115
(FAX)757-269-5577
(cell) 757-876-0480
(pager) 757-584-7115
(email) jacobsg at jlab.org
http://www.jlab.org/~jacobsg
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