JPS56152220A - Detecting circuit for tap deviation - Google Patents

Detecting circuit for tap deviation

Info

Publication number
JPS56152220A
JPS56152220A JP5420380A JP5420380A JPS56152220A JP S56152220 A JPS56152220 A JP S56152220A JP 5420380 A JP5420380 A JP 5420380A JP 5420380 A JP5420380 A JP 5420380A JP S56152220 A JPS56152220 A JP S56152220A
Authority
JP
Japan
Prior art keywords
bus
transformer
operate
auxiliary
relay
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
JP5420380A
Other languages
Japanese (ja)
Inventor
Kazuo Motomitsu
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5420380A priority Critical patent/JPS56152220A/en
Publication of JPS56152220A publication Critical patent/JPS56152220A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To enable the detection of the tap deviation of a transformer with a set of dial switches by employing two auxiliary relays operating in cooperation with a bus disconnecting switch and two tap deviation detecting auxiliary relay for each transformer and connecting them to an AC power source through diodes connected in reverse direction to one another. CONSTITUTION:An auxiliary relay 89AX1 operates when a corresponding transformer is connected to an A bus, while an auxiliary relay 89BX1 operates when the transformer is connected to a B bus. Auxiliary relays 89AX2, 89BX2 and 89AX3, 89BX3 operate in the same manner. When the first and second transformers are connected to the A bus and the third transformer is connected to the B bus, the auxiliary relays 89AX1, 89AX2, 89BX3 operate. If no tap deviation exists, an auxiliary relay 33AX2 operate, and an A bus tap deviation detecting relay D does not operate. If a tap deviation exists in the first or the second transformer, an auxiliary relay 33AX2 does not operate, but the relay D operates to detect the malfunction.
JP5420380A 1980-04-25 1980-04-25 Detecting circuit for tap deviation Pending JPS56152220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5420380A JPS56152220A (en) 1980-04-25 1980-04-25 Detecting circuit for tap deviation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5420380A JPS56152220A (en) 1980-04-25 1980-04-25 Detecting circuit for tap deviation

Publications (1)

Publication Number Publication Date
JPS56152220A true JPS56152220A (en) 1981-11-25

Family

ID=12963984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5420380A Pending JPS56152220A (en) 1980-04-25 1980-04-25 Detecting circuit for tap deviation

Country Status (1)

Country Link
JP (1) JPS56152220A (en)

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