NL185539C - LIMIT VALUE MACHINE FOR CHANGE SIGNALS. - Google Patents

LIMIT VALUE MACHINE FOR CHANGE SIGNALS.

Info

Publication number
NL185539C
NL185539C NLAANVRAGE7807981,A NL7807981A NL185539C NL 185539 C NL185539 C NL 185539C NL 7807981 A NL7807981 A NL 7807981A NL 185539 C NL185539 C NL 185539C
Authority
NL
Netherlands
Prior art keywords
limit value
change signals
value machine
machine
signals
Prior art date
Application number
NLAANVRAGE7807981,A
Other languages
Dutch (nl)
Other versions
NL185539B (en
NL7807981A (en
Original Assignee
Danfoss As
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 Danfoss As filed Critical Danfoss As
Publication of NL7807981A publication Critical patent/NL7807981A/en
Publication of NL185539B publication Critical patent/NL185539B/en
Application granted granted Critical
Publication of NL185539C publication Critical patent/NL185539C/en

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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
    • G01R19/1658—AC voltage or recurrent signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Manipulation Of Pulses (AREA)
  • Control Of Electric Motors In General (AREA)
  • Inverter Devices (AREA)
NLAANVRAGE7807981,A 1977-08-16 1978-07-27 LIMIT VALUE MACHINE FOR CHANGE SIGNALS. NL185539C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2736783A DE2736783C3 (en) 1977-08-16 1977-08-16 Limit value reporting device for alternating signals

Publications (3)

Publication Number Publication Date
NL7807981A NL7807981A (en) 1979-02-20
NL185539B NL185539B (en) 1989-12-01
NL185539C true NL185539C (en) 1990-05-01

Family

ID=6016450

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7807981,A NL185539C (en) 1977-08-16 1978-07-27 LIMIT VALUE MACHINE FOR CHANGE SIGNALS.

Country Status (6)

Country Link
JP (1) JPS5432366A (en)
DE (1) DE2736783C3 (en)
DK (1) DK159336C (en)
GB (1) GB2002983B (en)
NL (1) NL185539C (en)
SE (1) SE431915B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486207B1 (en) * 1980-07-07 1987-09-25 Dunham Bush Inc HEAT PUMP SYSTEM
DE3139598A1 (en) * 1981-10-06 1983-06-16 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Circuit arrangement for recording telecommunications traffic
US4431390A (en) * 1981-10-23 1984-02-14 Dresser Industries, Inc. Condensation control apparatus for oil-flooded compressors
FR2735623B1 (en) * 1995-06-16 1998-02-13 Tricard Jean Pierre ELECTRONIC PROTECTION OF HOUSEHOLD REFRIGERATION APPLIANCES
CN102033197B (en) * 2010-10-18 2014-04-23 中国电力科学研究院 Direct current (DC) converter valve non-periodic triggering test method using improved time delay method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011569B1 (en) * 1969-01-27 1975-05-02

Also Published As

Publication number Publication date
DK159336B (en) 1990-10-01
NL185539B (en) 1989-12-01
GB2002983A (en) 1979-02-28
GB2002983B (en) 1982-01-20
DK357578A (en) 1979-02-17
SE7808647L (en) 1979-02-17
SE431915B (en) 1984-03-05
NL7807981A (en) 1979-02-20
DE2736783A1 (en) 1979-02-22
DK159336C (en) 1991-03-11
DE2736783C3 (en) 1980-05-08
JPS5432366A (en) 1979-03-09
DE2736783B2 (en) 1979-08-30

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee