GB898506A - Improvements in and relating to supervising circuits for selsyn systems - Google Patents

Improvements in and relating to supervising circuits for selsyn systems

Info

Publication number
GB898506A
GB898506A GB2280959A GB2280959A GB898506A GB 898506 A GB898506 A GB 898506A GB 2280959 A GB2280959 A GB 2280959A GB 2280959 A GB2280959 A GB 2280959A GB 898506 A GB898506 A GB 898506A
Authority
GB
United Kingdom
Prior art keywords
phase leads
rlc
relays
july
operated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2280959A
Inventor
Alistair Mccowan
Shafi-Uddin Ahmed Choudhury
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2280959A priority Critical patent/GB898506A/en
Publication of GB898506A publication Critical patent/GB898506A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/38—Electric signal transmission systems using dynamo-electric devices
    • G08C19/46—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings
    • G08C19/48—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings being the type with a three-phase stator and a rotor fed by constant-frequency ac, e.g. selsyn, magslip

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

898,506. Protective arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 1, 1960 [July 2, 1959], No. 22809/59. Class 38 (5). [Also in Group XXXVIII] A monitoring arrangement for a selsyn system comprising transmitter 1, 2 and receiver 3, 4 has transformer windings in the phase leads connecting the two units, the secondary currents being rectified, added together and applied to two parallel-connected relay coils RLC 1 and RLC 2 . One of these relays will be operated when the current falls below a predetermined value, e.g. one-tenth of the normal value, to indicate an open-circuit in one of the phase leads. Similarly, the other relay will be operated by a short-circuit between two of the phase leads, as this results in the current rising above a predetermined value, e.g. 5-10 times the normal value. The operation of the relays can give an indication or control effect, e.g. it can disconnect the selsyns or a winder motor in a mine-hoist installation.
GB2280959A 1959-07-02 1959-07-02 Improvements in and relating to supervising circuits for selsyn systems Expired GB898506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2280959A GB898506A (en) 1959-07-02 1959-07-02 Improvements in and relating to supervising circuits for selsyn systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2280959A GB898506A (en) 1959-07-02 1959-07-02 Improvements in and relating to supervising circuits for selsyn systems

Publications (1)

Publication Number Publication Date
GB898506A true GB898506A (en) 1962-06-14

Family

ID=10185400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2280959A Expired GB898506A (en) 1959-07-02 1959-07-02 Improvements in and relating to supervising circuits for selsyn systems

Country Status (1)

Country Link
GB (1) GB898506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039260A1 (en) * 1980-04-24 1981-11-04 The Bendix Corporation Circuit for measuring the angular position of a rotatable device with provision for fault detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039260A1 (en) * 1980-04-24 1981-11-04 The Bendix Corporation Circuit for measuring the angular position of a rotatable device with provision for fault detection

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