GB1289416A - - Google Patents

Info

Publication number
GB1289416A
GB1289416A GB1289416DA GB1289416A GB 1289416 A GB1289416 A GB 1289416A GB 1289416D A GB1289416D A GB 1289416DA GB 1289416 A GB1289416 A GB 1289416A
Authority
GB
United Kingdom
Prior art keywords
current
voltage
dependence
june
inclusion
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
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 filed Critical
Publication of GB1289416A publication Critical patent/GB1289416A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H02H3/44—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 the rate of change of electrical quantities
    • H02H3/445—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 the rate of change of electrical quantities of DC quantities

Landscapes

  • Rectifiers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electrostatic Separation (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1289416 Protection system SIEMENS AG 23 June 1970 [24 June 1969] 30530/70 Addition to 1194815 Heading H2H [Also in Division C7] The circuit of the parent Specification, is modified by the inclusion of an arrangement which alters the current required to actuate the device in dependence upon the normal current present. The device of the parent Specification is modified by the inclusion of transformer secondaries 50, 51 and 52, feeding rectifier 53, the output current of which is fed through resistor 55. The voltage developed across resistor 55 is a measure of the normal operating current drawn from the mains. This voltage is fed to the base of a transistor 32, whose emitter collector resistance therefore varies in dependence upon the normal operating current through an electrolytic forming device 2. Resistance 32 causes the emitter voltage of transistor 34 to be varied, and therefore the firing point of the control circuit.
GB1289416D 1969-06-24 1970-06-23 Expired GB1289416A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691931968 DE1931968A1 (en) 1969-06-24 1969-06-24 Process for operating a device for limiting the energy supply in the event of a sudden change in the consumer voltage of a current-sensitive consumer and arrangement for carrying out the process

Publications (1)

Publication Number Publication Date
GB1289416A true GB1289416A (en) 1972-09-20

Family

ID=5737860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289416D Expired GB1289416A (en) 1969-06-24 1970-06-23

Country Status (4)

Country Link
JP (1) JPS501693B1 (en)
DE (1) DE1931968A1 (en)
FR (1) FR2047905B2 (en)
GB (1) GB1289416A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549184A1 (en) * 1975-11-03 1977-05-26 Garbe Lahmeyer & Co Ag DC POWER SUPPLY WITH FULLY CONTROLLED THYRISTOR BRIDGE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914956A (en) * 1945-04-26 1946-10-23 Cfcmug Improvement in devices for starting protection against earth faults or between phases of a polyphase alternating current network

Also Published As

Publication number Publication date
FR2047905A2 (en) 1971-03-19
FR2047905B2 (en) 1975-01-10
JPS501693B1 (en) 1975-01-21
DE1931968A1 (en) 1971-02-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees