Electricity: measuring and testing – Testing and calibrating electric meters
Patent
1989-02-03
1990-05-01
Karlsen, Ernest F.
Electricity: measuring and testing
Testing and calibrating electric meters
324157, 324542, 340642, G01R 3108, G01R 138, G08B 2100
Patent
active
049221850
ABSTRACT:
A diagnostic meter base, used for testing the connections of a self-contained meter in a polyphase installation is described. The diagnostic meter base comprises a box-like casing, one end of which defines a socket with contacts to engage respective contacts of the meter, and the other end of which defines a plug with contacts to engage respective contacts of a permanent support socket of the installation. The casing houses a network of circuit elements each including a lamp which responds to current through the element, whereby the pattern of lamp responses is indicative of the pattern connections in the installation. The lamp bulbs are mounted in a well at one end of the casing, the well having a hinged cover.
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Derfler,Jr., F. J.; "Overview -RS-232C Adapter"; Microprocessing; Feb. 1984; pp. 16, 20.
Davidson Gordon O.
Mitchell Barry C.
White Larry A.
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