Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1982-03-26
1983-10-18
Shoop, William M.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
323204, 323207, 323299, 363150, H02J 900
Patent
active
044108079
ABSTRACT:
A regulating device for a polyphase electrical circuit, having a motor with windings corresponding to the main supply lines for the circuit. Leads are connected to each of the windings and contain a relatively low m.f.d. capacitor for suppressing spikes and similar transients in the respective supply lines, and a relatively high m.f.d. capacitor for functioning as a phase converter in the event the current in the respective supply line is interrupted. By-pass circuits are provided for each of the low m.f.d. capacitors corresponding to a respective supply line, containing relay means in the circuit responsive to the supply line to by-pass the low m.f.d. capacitor in the event the current is interrupted in the respective supply line, thereby permitting the high m.f.d. capacitor to function as part of a phase converter. In a modification of the present system, in some installations the device may consist essentially of the pilot motor with leads connected parallel to the respective windings and each capacitor therein of a sufficiently high m.f.d. rating to cause the said device to operate as a phase converter in the event the current in any one of the lines is interrupted.
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Hobbs Marmaduke A.
Kay Industries, Inc.
Shoop William M.
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