JPS589037U - Induction motor protection device - Google Patents

Induction motor protection device

Info

Publication number
JPS589037U
JPS589037U JP10194881U JP10194881U JPS589037U JP S589037 U JPS589037 U JP S589037U JP 10194881 U JP10194881 U JP 10194881U JP 10194881 U JP10194881 U JP 10194881U JP S589037 U JPS589037 U JP S589037U
Authority
JP
Japan
Prior art keywords
induction motor
power supply
protection device
voltage unbalance
unbalance rate
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.)
Pending
Application number
JP10194881U
Other languages
Japanese (ja)
Inventor
辺見　芳郎
Original Assignee
株式会社東芝
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 株式会社東芝 filed Critical 株式会社東芝
Priority to JP10194881U priority Critical patent/JPS589037U/en
Publication of JPS589037U publication Critical patent/JPS589037U/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の一実施例を示す構成図である。 １・・・電源、２・・・電源開閉器、３・・・検出器、
４・・・誘導電動機、５・・・負荷、６・・・変換器、
７・・・演算回路、８・・・逆相検出器、９・・・比較
器、１０・・・信号発生回路。The drawing is a configuration diagram showing an embodiment of the present invention. 1...Power source, 2...Power switch, 3...Detector,
4... Induction motor, 5... Load, 6... Converter,
7... Arithmetic circuit, 8... Negative phase detector, 9... Comparator, 10... Signal generation circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 交流電源で駆動される誘導電動機の電流を検出して負荷
率に応じた許容電源電圧不平衡率を設定する演算装置と
、誘導電動機の逆相電流から電源１　　電圧不平衡率を
検出する逆相検出器を備え、上記電源電圧不平衡率の検
出値が設定値より大きいとき誘導電動機を交流電源から
しゃ断することを特徴とする誘導電動機の保護装置。An arithmetic unit that detects the current of an induction motor driven by an AC power supply and sets an allowable power supply voltage unbalance rate according to the load factor, and a reverse phase controller that detects the voltage unbalance rate of power supply 1 from the reverse sequence current of the induction motor. 1. A protection device for an induction motor, comprising a detector, and disconnecting the induction motor from an AC power source when the detected value of the power supply voltage unbalance rate is larger than a set value.
JP10194881U 1981-07-10 1981-07-10 Induction motor protection device Pending JPS589037U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10194881U JPS589037U (en) 1981-07-10 1981-07-10 Induction motor protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10194881U JPS589037U (en) 1981-07-10 1981-07-10 Induction motor protection device

Publications (1)

Publication Number Publication Date
JPS589037U true JPS589037U (en) 1983-01-20

Family

ID=29896605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10194881U Pending JPS589037U (en) 1981-07-10 1981-07-10 Induction motor protection device

Country Status (1)

Country Link
JP (1) JPS589037U (en)

Similar Documents

Publication Publication Date Title
JPS589037U (en) Induction motor protection device
JPS5986895U (en) Inverter overvoltage protection device
JPS58183100U (en) Overvoltage detection device for motor control
JPS58103598U (en) Protection device for power converter equipment
JPS6010316U (en) Copy machine power supply control device
JPS5837788U (en) Harmonic suppression control device
JPS58147041U (en) Safety equipment for production equipment, etc.
JPS5925928U (en) Power supply device using storage battery
JPS6034786U (en) Current source inverter control device
JPS598293U (en) semiconductor conversion equipment
JPS58103599U (en) Protection device for power converter equipment
JPS5870046U (en) Overvoltage suppression circuit
JPS6077287U (en) Inrush current prevention circuit
JPS6082991U (en) Current source inverter device
JPS6014686U (en) switching regulator
JPS5866896U (en) Inverter control circuit
JPS5966391U (en) Parallel inverter device
JPS58153584U (en) Protection circuit for power conversion equipment
JPS6025390U (en) Power switching device
JPS5947238U (en) Power factor control circuit for AC generator equipment
JPS586586U (en) Power supply for concrete vibrator
JPS58133825U (en) DC stabilized power supply
JPS602237U (en) Heat pump operation control device
JPS58193894U (en) Protection circuit for inverter equipment
JPS59118334U (en) transistor protection device