GB1439993A - Relay testing circuits - Google Patents

Relay testing circuits

Info

Publication number
GB1439993A
GB1439993A GB4050473A GB4050473A GB1439993A GB 1439993 A GB1439993 A GB 1439993A GB 4050473 A GB4050473 A GB 4050473A GB 4050473 A GB4050473 A GB 4050473A GB 1439993 A GB1439993 A GB 1439993A
Authority
GB
United Kingdom
Prior art keywords
relay
aug
preliminary step
unit
voltage applied
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
GB4050473A
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 AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of GB1439993A publication Critical patent/GB1439993A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1439993 Relay test apparatus SIEMENS AG 28 Aug 1973 [29 Aug 1972] 40504/73 Heading G1U In a preliminary step of a method of testing a relay P, Fig. 1, the current through the relay coil as a result of a voltage applied to it by a unit U2 also passes through a selected resistor BV and the voltage e thereacross is compared V (by a connection from e to a not shown) with a reference voltage produced by a device UV1 in accordance with the particular type of relay under test, and any difference between the two voltages is reduced towards zero by a program device PE which appropriately adjusts the effective gain of an amplifier VP and the unit U2. This preliminary step of adjusting the voltage applied to the relay to that value which causes a standard current to flow, is necessary because even though the number of turns of the relay coil will be known its resistance may vary by up to 10% because of irregularities in the winding pattern.
GB4050473A 1972-08-29 1973-08-28 Relay testing circuits Expired GB1439993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722242418 DE2242418C2 (en) 1972-08-29 1972-08-29 Circuit arrangement for dynamic testing of relays with test pulses

Publications (1)

Publication Number Publication Date
GB1439993A true GB1439993A (en) 1976-06-16

Family

ID=5854862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4050473A Expired GB1439993A (en) 1972-08-29 1973-08-28 Relay testing circuits

Country Status (11)

Country Link
JP (1) JPS4960866A (en)
AT (1) AT351631B (en)
BE (1) BE804170A (en)
CH (1) CH574609A5 (en)
DE (1) DE2242418C2 (en)
FR (1) FR2198145A1 (en)
GB (1) GB1439993A (en)
IT (1) IT993032B (en)
LU (1) LU68311A1 (en)
NL (1) NL161886C (en)
SE (1) SE382261B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115951207A (en) * 2022-12-24 2023-04-11 北京市科通电子继电器总厂有限公司 Test circuit and system of solid relay

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704289C2 (en) * 1977-02-02 1985-06-27 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for testing relay windings
JPS5780573A (en) * 1980-11-07 1982-05-20 Mitsubishi Electric Corp Tester for relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115951207A (en) * 2022-12-24 2023-04-11 北京市科通电子继电器总厂有限公司 Test circuit and system of solid relay

Also Published As

Publication number Publication date
LU68311A1 (en) 1973-10-30
DE2242418A1 (en) 1974-03-07
NL7311841A (en) 1974-03-04
BE804170A (en) 1974-02-28
NL161886B (en) 1979-10-15
AT351631B (en) 1979-08-10
SE382261B (en) 1976-01-19
DE2242418B1 (en) 1974-03-07
IT993032B (en) 1975-09-30
ATA688273A (en) 1979-01-15
JPS4960866A (en) 1974-06-13
FR2198145A1 (en) 1974-03-29
NL161886C (en) 1980-03-17
CH574609A5 (en) 1976-04-15
DE2242418C2 (en) 1975-03-27

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Legal Events

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