GB2035728B - Openphase detector - Google Patents

Openphase detector

Info

Publication number
GB2035728B
GB2035728B GB7846699A GB7846699A GB2035728B GB 2035728 B GB2035728 B GB 2035728B GB 7846699 A GB7846699 A GB 7846699A GB 7846699 A GB7846699 A GB 7846699A GB 2035728 B GB2035728 B GB 2035728B
Authority
GB
United Kingdom
Prior art keywords
openphase
detector
openphase detector
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
GB7846699A
Other versions
GB2035728A (en
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB7846699A priority Critical patent/GB2035728B/en
Publication of GB2035728A publication Critical patent/GB2035728A/en
Application granted granted Critical
Publication of GB2035728B publication Critical patent/GB2035728B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/343—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using phase sequence analysers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/16—Measuring asymmetry of polyphase networks
GB7846699A 1978-11-30 1978-11-30 Openphase detector Expired GB2035728B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7846699A GB2035728B (en) 1978-11-30 1978-11-30 Openphase detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7846699A GB2035728B (en) 1978-11-30 1978-11-30 Openphase detector

Publications (2)

Publication Number Publication Date
GB2035728A GB2035728A (en) 1980-06-18
GB2035728B true GB2035728B (en) 1982-10-13

Family

ID=10501444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7846699A Expired GB2035728B (en) 1978-11-30 1978-11-30 Openphase detector

Country Status (1)

Country Link
GB (1) GB2035728B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4804922A (en) * 1985-11-01 1989-02-14 Energy Support Corporation Voltage sensor
BR9004756A (en) * 1989-09-25 1991-09-10 Gen Electric DIGITAL ELECTRONIC ELECTRICITY METER, REACTIVE ENERGY MEDICATION METHOD, COMPENSATION METHOD FOR DISPLACEMENT VOLTAGE ERRORS, METHOD OF LOSS DETECTION OF ANY OF THE POWER VOLTAGE AND GENERATION OF A POWER SUPPLY FAILURE, DISPOSAL FORCES, METHOD FOR SCALING INPUT CURRENT SIGNS, METHOD FOR SELF-CHECKING CIRCUITS AND ELEMENTS AND METHOD FOR PROVIDING A TIME BASE SIGNAL
US6720749B2 (en) * 2001-10-04 2004-04-13 Texas Instruments Incorporated Three-phase motor protector apparatus

Also Published As

Publication number Publication date
GB2035728A (en) 1980-06-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee