CHARLES J MCMILLEN
Electrician in Hickory, NC
License number
Massachusetts 7486
Expiration Date
Jun 30, 2000
Type
Electrical Engineer
Address
Address
Hickory, NC 28601
Personal information
See more information about CHARLES J MCMILLEN at radaris.comName
Address
Phone
426 N Beaumont Ave, Burlington, NC 27217
904 2Nd St NE APT 312, Hickory, NC 28601
Professional information
Dual Voltage Distribution Transformer With Internal Varistor Surge Protection
US Patent:
4862307, Aug 29, 1989
Filed:
Jul 6, 1988
Appl. No.:
7/215525
Inventors:
Carl A. Larson - Hickory NC
Charles J. McMillen - Hickory NC
Edgar E. McQuay - Conover NC
Charles J. McMillen - Hickory NC
Edgar E. McQuay - Conover NC
Assignee:
General Electric Company - King of Prussia PA
International Classification:
H02H 704
US Classification:
361 38
Abstract:
This dual voltage transformer comprises a primary winding having a tap at a location intermediate its length, a first termination for connection to line voltage, and a second termination for connection to ground. When the transformer is to be operated at a relatively high voltage, the first termination is connected through a dual voltage switch to line voltage; and when the transformer is to be operated at a relatively low voltage, the tap is connected through said switch to line voltage. First varistor means is connected across the primary winding between said first and second terminations both when the transformer is operated at high voltage and at low voltage; and second varistor means having a lower breakover voltage than the first varistor means is connected between said tap and ground when the transformer is operated at low voltage.
Dual Voltage Distribution Transformer With Internal Varistor Surge Protection
US Patent:
4621298, Nov 4, 1986
Filed:
May 31, 1985
Appl. No.:
6/739631
Inventors:
Charles J. McMillen - Hickory NC
Assignee:
General Electric Company - King of Prussia PA
International Classification:
H02H 704
US Classification:
361 38
Abstract:
A dual voltage distribution transformer is protected by an internally installed, multi-rated surge arrester which is selectively connected with plural primary windings by a dual voltage switch such as to establish a high surge voltage protection level when the primary windings are connected in series by the switch and a correspondingly lower surge voltage protection level when the primary windings are connected in parallel by the switch.