GB1513004A - Arrangement for monitoring the phase angle - Google Patents

Arrangement for monitoring the phase angle

Info

Publication number
GB1513004A
GB1513004A GB3729175A GB3729175A GB1513004A GB 1513004 A GB1513004 A GB 1513004A GB 3729175 A GB3729175 A GB 3729175A GB 3729175 A GB3729175 A GB 3729175A GB 1513004 A GB1513004 A GB 1513004A
Authority
GB
United Kingdom
Prior art keywords
monitoring
arrangement
phase angle
sept
circuits
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
GB3729175A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1513004A publication Critical patent/GB1513004A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • G01R25/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller, or for passing one of the input signals as output signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Conversion In General (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

1513004 Phase comparators LICENTIA PATENT VERWALTUNGS GmbH 10 Sept 1975 [27 Sept 1974] 37291/75 Heading H3A An arrangement for monitoring the phase angle between two electrical alternating values e.g. voltage and current in a plurality of circuits (not shown) comprises switches 5 1 ... 5 n for passing the second value b 1 , b 2 ... or b n under the control of pulses derived via 1, 2, 4, 12, 3 1 ... 3 n from the first value which is common to all the circuits, elements 6, 7 responsive to the sampled second values to apply a D.C. voltage proportional to the relative phase to upper and lower threshold detectors 9, 8. The control pulses are derived via a zero-crossing detector 1, a pulse frequency step-down device 12, a counter 2 with a decoder 4 and AND gates 3 1 ... 3 n .
GB3729175A 1974-09-27 1975-09-10 Arrangement for monitoring the phase angle Expired GB1513004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742446794 DE2446794A1 (en) 1974-09-27 1974-09-27 ARRANGEMENT FOR MONITORING THE PHASE ANGLE

Publications (1)

Publication Number Publication Date
GB1513004A true GB1513004A (en) 1978-06-01

Family

ID=5927223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3729175A Expired GB1513004A (en) 1974-09-27 1975-09-10 Arrangement for monitoring the phase angle

Country Status (3)

Country Link
DE (1) DE2446794A1 (en)
GB (1) GB1513004A (en)
NL (1) NL7511334A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101937069B (en) * 2010-09-08 2013-11-27 珠海中慧微电子有限公司 Voltage characteristic detection system and method of SOC (System On Chip) intelligent electric meter

Also Published As

Publication number Publication date
NL7511334A (en) 1976-03-30
DE2446794A1 (en) 1976-04-15

Similar Documents

Publication Publication Date Title
US4138232A (en) Detector for detecting voltage breakdowns on the high-voltage side of an electric precipitator
GB1385239A (en) Current limiting control for an electric power system
GB1437807A (en) Measuring line impedance
ES402272A1 (en) Adjustable speed polyphase a-c motor drive utilizing an in-phase current signal for motor control
GB1477207A (en) Apparatus for metering electrical energy in single phase systems
GB1362467A (en) Electric power converts
GB1139711A (en) Apparatus for analysing complex waveforms
GB1535984A (en) Control arrangement for an inverter
GB1513004A (en) Arrangement for monitoring the phase angle
GB1398184A (en) Sensing apparatus
US3988641A (en) Phase breakdown- and null current-detector, especially for an electronic motor protection relay possessing current-dependent triggering
GB1183570A (en) Measurement of Varying Electrical Energy
GB1454871A (en) Dc motor speed control circuit
GB1375556A (en)
GB1375764A (en)
GB1198637A (en) Continuous Monitoring of Corona on Power Cables.
GB1494202A (en) Monitoring a drive system
SU577469A1 (en) Arrangement for measuring frequency of three-phase sinusoidal voltage
GB890308A (en) Improvements in and relating to electrical phase angle comparators
GB1465757A (en) Electric protection triggering apparatus
GB1297628A (en)
SU1385082A1 (en) Device for determining signal extreme moments
JPS57144470A (en) Phase detecting device
SE337415B (en)
GB1515332A (en) Monitoring a drive system comprising a plurality of rotating field motors

Legal Events

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