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JPS5783142A - Protective device for rotary electric machine - Google Patents

Protective device for rotary electric machine

Info

Publication number
JPS5783142A
JPS5783142A JP55158245A JP15824580A JPS5783142A JP S5783142 A JPS5783142 A JP S5783142A JP 55158245 A JP55158245 A JP 55158245A JP 15824580 A JP15824580 A JP 15824580A JP S5783142 A JPS5783142 A JP S5783142A
Authority
JP
Japan
Prior art keywords
air cleaner
dust
contact
predetermined quantity
pressure
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
JP55158245A
Other languages
Japanese (ja)
Inventor
Tatsuo Tanaka
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 JP55158245A priority Critical patent/JPS5783142A/en
Publication of JPS5783142A publication Critical patent/JPS5783142A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

PURPOSE:To prevent the intrusion of dust into a cooling air due to the trouble of an air cleaner by fitting a contact sensing pressure difference lower than initial pressure loss to a differential pressure gage mounted to the air cleaner besides a contact sensing the predetermined quantity of dust collected. CONSTITUTION:The contact (b) functioning by pressure difference lower than the initial pressure loss of the air cleaner 2 is attached to the differential pressure gage 3 for detecting the predetermined quantity of dust collected by mounting pressure introducing pipes 4, 5 at the inlet side and outlet side of the air cleaner 2 besides the contact a working by sensing the predetermined quantity of dust collected. Accordingly, the fracture of the air cleaner 2 can be detected from pressure difference at the inlet side and the outlet side, and the intrusion of dust into the cooling air can be prevented.
JP55158245A 1980-11-12 1980-11-12 Protective device for rotary electric machine Pending JPS5783142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55158245A JPS5783142A (en) 1980-11-12 1980-11-12 Protective device for rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55158245A JPS5783142A (en) 1980-11-12 1980-11-12 Protective device for rotary electric machine

Publications (1)

Publication Number Publication Date
JPS5783142A true JPS5783142A (en) 1982-05-24

Family

ID=15667422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55158245A Pending JPS5783142A (en) 1980-11-12 1980-11-12 Protective device for rotary electric machine

Country Status (1)

Country Link
JP (1) JPS5783142A (en)

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