GB300234A - Improvements relating to electric protective devices - Google Patents

Improvements relating to electric protective devices

Info

Publication number
GB300234A
GB300234A GB1662727A GB1662727A GB300234A GB 300234 A GB300234 A GB 300234A GB 1662727 A GB1662727 A GB 1662727A GB 1662727 A GB1662727 A GB 1662727A GB 300234 A GB300234 A GB 300234A
Authority
GB
United Kingdom
Prior art keywords
fuse
coil
reactance
resistance
contact
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
GB1662727A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1662727A priority Critical patent/GB300234A/en
Publication of GB300234A publication Critical patent/GB300234A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/38—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H2085/0225—Means for preventing discharge, e.g. corona ring

Landscapes

  • Regulation Of General Use Transformers (AREA)
  • Thermistors And Varistors (AREA)
  • Fuses (AREA)

Abstract

300,234. British Thomson-Houston Co., Ltd., Wellings, J. G., and Wood, C. W. June 22, 1927. Fusible cut-outs.-A fuse connected in series with a reactance or resistance to protect a transformer &c. is located axially within the coil forming the reactance or resistance so that the coil forms an electrostatic shield at substantially the same potential as the fuse wire. The coil 14 is wound on a porcelain tube 4 extending at 17 beyond the end of the coil and fuse and is connected to supports 10, 11, one of which is integral with an end plate 9 carrying a screw cap 8 that engages one end of the fuse 3 the other end being supported by a contact 5 and porcelain disc 6. The tube 4 is provided with a shoulder 12 to enable it to withstand the full line potential that occurs between the contact 5 and the coil 14 when the fuse blows.
GB1662727A 1927-06-22 1927-06-22 Improvements relating to electric protective devices Expired GB300234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1662727A GB300234A (en) 1927-06-22 1927-06-22 Improvements relating to electric protective devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1662727A GB300234A (en) 1927-06-22 1927-06-22 Improvements relating to electric protective devices

Publications (1)

Publication Number Publication Date
GB300234A true GB300234A (en) 1928-11-22

Family

ID=10080725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1662727A Expired GB300234A (en) 1927-06-22 1927-06-22 Improvements relating to electric protective devices

Country Status (1)

Country Link
GB (1) GB300234A (en)

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