JPS6465462A - Voltage detecting device - Google Patents

Voltage detecting device

Info

Publication number
JPS6465462A
JPS6465462A JP62222511A JP22251187A JPS6465462A JP S6465462 A JPS6465462 A JP S6465462A JP 62222511 A JP62222511 A JP 62222511A JP 22251187 A JP22251187 A JP 22251187A JP S6465462 A JPS6465462 A JP S6465462A
Authority
JP
Japan
Prior art keywords
phase
voltage
induced voltage
phases
amplifier
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.)
Granted
Application number
JP62222511A
Other languages
Japanese (ja)
Other versions
JPH0743393B2 (en
Inventor
Kenji Murakami
Shigeru Fujita
Hideki Oda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62222511A priority Critical patent/JPH0743393B2/en
Publication of JPS6465462A publication Critical patent/JPS6465462A/en
Publication of JPH0743393B2 publication Critical patent/JPH0743393B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To eliminate the need to make phase adjustments, phase by phase, by inverting one or two phases of a three-phase voltage by a phase inverting circuit and performing vector composition with the remain two or one phase by an adding circuit. CONSTITUTION:When a voltage is applied to respective charging part conductors 2, an electric field is generated to a grounded jacket 1 and electrostatic capacity values CA-CC. Then the current iA of A phase is converted by an amplifier 7a into an induced voltage Va and an induced voltage Va and an induced voltage Va1 is obtained next which is inverted in phase by 180 deg. through the phase inverting circuit 8. The currents iB and iC of B and C phases are put together into iBC. Then voltages Va1 and Vbc are is further amplified by an amplifier 5, whose output is level-detected, so that a display device 10 makes a charge/ noncharge (whether or not there is a three-phase balanced voltage) display, etc.
JP62222511A 1987-09-04 1987-09-04 Voltage detector Expired - Lifetime JPH0743393B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62222511A JPH0743393B2 (en) 1987-09-04 1987-09-04 Voltage detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62222511A JPH0743393B2 (en) 1987-09-04 1987-09-04 Voltage detector

Publications (2)

Publication Number Publication Date
JPS6465462A true JPS6465462A (en) 1989-03-10
JPH0743393B2 JPH0743393B2 (en) 1995-05-15

Family

ID=16783577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222511A Expired - Lifetime JPH0743393B2 (en) 1987-09-04 1987-09-04 Voltage detector

Country Status (1)

Country Link
JP (1) JPH0743393B2 (en)

Also Published As

Publication number Publication date
JPH0743393B2 (en) 1995-05-15

Similar Documents

Publication Publication Date Title
JPS6465462A (en) Voltage detecting device
DE3168253D1 (en) Device for the contactless determination of the position and/or of the dielectric properties of objects
GR3006796T3 (en)
KR830005752A (en) 3-phase power factor controller
IE810253L (en) Measurement of electric power-polyphase network
SU964853A1 (en) Device for symmetrization of asymmetric three-phase load
KR920004850A (en) Phase detection circuit of 3-phase power supply
SU547900A1 (en) Zero or reverse sequence power switch
JPH02184765A (en) Detector for 3-phase ac current
JPS5778A (en) Misfiring detector in three-phase bridge inverter
JPS54120818A (en) Torque detector for multiphase ac machine
JPH0743392B2 (en) Voltage detector
BR9910214A (en) Apparatus for use in an electrical supply system having at least two phases and a neutral conductor and a controllable load for each phase, process to reduce the current in a conductor in an electrical system having at least two phase conductors and a neutral conductor and a controllable load for each phase, single-phase electrical system, and, process to balance the voltage through two loads connected in series in a single-phase system
SU1596257A1 (en) Apparatus for measuring electric power
JPS5615175A (en) Checking direction of rotation for 3-phase motor
MORRELL A system for conveniently providing load testing termination of an AC power source having at least one battery(Patent Application)
JPS6443766A (en) Wattmeter
RU93051868A (en) METHOD OF MEASUREMENT OF DISTANCE TO THE SHORT CIRCUIT PLACE IN THE AIR DISTRIBUTIVE NETWORKS
SU444994A1 (en) Phasodifferential detector
JPS63200072A (en) voltage detection device
SU1150631A1 (en) Pulse-time square-law function generator
KR890002158Y1 (en) Detection of electric density for apparatus
MORELL System for conveniently providing load testing termination of an AC power source having at least one battery(Patent)
JPS55106055A (en) Canned motor equipped with rotary direction detector
NOLA Phase detector for three-phase power factor controller[Patent]

Legal Events

Date Code Title Description
S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080515

Year of fee payment: 13