GB1137478A - Electrical supervisory circuits - Google Patents

Electrical supervisory circuits

Info

Publication number
GB1137478A
GB1137478A GB803566A GB803566A GB1137478A GB 1137478 A GB1137478 A GB 1137478A GB 803566 A GB803566 A GB 803566A GB 803566 A GB803566 A GB 803566A GB 1137478 A GB1137478 A GB 1137478A
Authority
GB
United Kingdom
Prior art keywords
relay
feb
conductors
voltage
motor
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
GB803566A
Other languages
English (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.)
Siemens Schuckertwerke AG
Siemens Corp
Original Assignee
Siemens Schuckertwerke AG
Siemens Corp
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 Siemens Schuckertwerke AG, Siemens Corp filed Critical Siemens Schuckertwerke AG
Publication of GB1137478A publication Critical patent/GB1137478A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Protection Of Generators And Motors (AREA)
GB803566A 1965-02-25 1966-02-23 Electrical supervisory circuits Expired GB1137478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0095663 1965-02-25

Publications (1)

Publication Number Publication Date
GB1137478A true GB1137478A (en) 1968-12-18

Family

ID=7519533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB803566A Expired GB1137478A (en) 1965-02-25 1966-02-23 Electrical supervisory circuits

Country Status (3)

Country Link
CH (1) CH441502A (enrdf_load_stackoverflow)
GB (1) GB1137478A (enrdf_load_stackoverflow)
NL (1) NL6602083A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
CH441502A (de) 1967-08-15
NL6602083A (enrdf_load_stackoverflow) 1966-08-26

Similar Documents

Publication Publication Date Title
GB1039825A (en) Current control apparatus
GB1136836A (en) Leakage current protection switch with excess current release
GB1465721A (en) Ground fault detector
GB1137478A (en) Electrical supervisory circuits
GB1061600A (en) Temperature responsive control arrangements
GB1008135A (en) Improvements in circuits for protecting electrical loads from an adverse condition
GB1174641A (en) Improvements in Voltage Regulators
GB1249666A (en) Improvements in reverse current monitor
GB1372331A (en) Electric power supply unit for electronic equipment
US3082370A (en) Generating system regulation
GB1060172A (en) Surge protection circuits for use with accumulator charging systems
GB1309819A (en) Thermistor controlled overload protection circuit
GB1020101A (en) Unbalanced current protection system for use with paralleled generators
US3239746A (en) Generating system regulation
GB1114818A (en) Electronic protective apparatus
GB1123200A (en) Detection of faults in electrical induction furnaces
GB723555A (en) Improvements in or relating to electric pilot wire circuit arrangements for protective or other purposes
GB883660A (en) Improvements in and relating to electrical protective relay systems
GB1047940A (en) Static time-lag overcurrent relay
US2869067A (en) Protective apparatus for electric current distributing systems
US3336504A (en) Over-current protective device
GB1168972A (en) Thermally Responsive Electrical Control Circuit
US3366840A (en) Ground fault protective apparatus
US3113247A (en) Power failure sensor
GB1043595A (en) Overheating and earth-fault protection system for electric motors and transformers