GB2071442B - Monitoring ac current - Google Patents

Monitoring ac current

Info

Publication number
GB2071442B
GB2071442B GB8006061A GB8006061A GB2071442B GB 2071442 B GB2071442 B GB 2071442B GB 8006061 A GB8006061 A GB 8006061A GB 8006061 A GB8006061 A GB 8006061A GB 2071442 B GB2071442 B GB 2071442B
Authority
GB
United Kingdom
Prior art keywords
monitoring
current
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
GB8006061A
Other versions
GB2071442A (en
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.)
PVS CONTROL ENG Ltd
Original Assignee
PVS CONTROL ENG 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 PVS CONTROL ENG Ltd filed Critical PVS CONTROL ENG Ltd
Priority to GB8006061A priority Critical patent/GB2071442B/en
Publication of GB2071442A publication Critical patent/GB2071442A/en
Application granted granted Critical
Publication of GB2071442B publication Critical patent/GB2071442B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/06—Measuring real component; Measuring reactive component
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/006—Measuring power factor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB8006061A 1980-02-22 1980-02-22 Monitoring ac current Expired GB2071442B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8006061A GB2071442B (en) 1980-02-22 1980-02-22 Monitoring ac current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8006061A GB2071442B (en) 1980-02-22 1980-02-22 Monitoring ac current

Publications (2)

Publication Number Publication Date
GB2071442A GB2071442A (en) 1981-09-16
GB2071442B true GB2071442B (en) 1983-04-20

Family

ID=10511590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8006061A Expired GB2071442B (en) 1980-02-22 1980-02-22 Monitoring ac current

Country Status (1)

Country Link
GB (1) GB2071442B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128425B (en) * 1982-10-08 1986-06-25 Newelec Pretoria Stall detection apparatus
US6288372B1 (en) 1999-11-03 2001-09-11 Tyco Electronics Corporation Electric cable having braidless polymeric ground plane providing fault detection
CN102565696B (en) * 2012-01-13 2014-10-01 广东电网公司东莞供电局 Quick measuring device of protective pressing plate and measuring method thereof

Also Published As

Publication number Publication date
GB2071442A (en) 1981-09-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee