GB1323701A - Apparatus for carrying out electrical tests - Google Patents

Apparatus for carrying out electrical tests

Info

Publication number
GB1323701A
GB1323701A GB4894469A GB1323701DA GB1323701A GB 1323701 A GB1323701 A GB 1323701A GB 4894469 A GB4894469 A GB 4894469A GB 1323701D A GB1323701D A GB 1323701DA GB 1323701 A GB1323701 A GB 1323701A
Authority
GB
United Kingdom
Prior art keywords
neutral
loop impedance
carrying
transformer
out electrical
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
GB4894469A
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 CENTRAL ELECTRICAL CO
Original Assignee
BRITISH CENTRAL ELECTRICAL CO
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 CENTRAL ELECTRICAL CO filed Critical BRITISH CENTRAL ELECTRICAL CO
Publication of GB1323701A publication Critical patent/GB1323701A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

1323701 Neutral loop impedance test BRITISH CENTRAL ELECTRICAL Co Ltd 29 Sept 1970 [6 Oct 1969] 48944/69 Addition to 1013045 Heading G1U The neutral loop impedance tester described in the parent Specification 1013045, is modified in that the polarity reversing switch preceeding the transformer 18 is replaced by a polarity reversing switch 27 in the secondary circuit of the transformer. Thus two neutral loop impedance measurements with opposite polarities can be made thereby permitting the effects of stray neutral-earth currents to be taken into account.
GB4894469A 1969-10-06 1969-10-06 Apparatus for carrying out electrical tests Expired GB1323701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4894469 1969-10-06

Publications (1)

Publication Number Publication Date
GB1323701A true GB1323701A (en) 1973-07-18

Family

ID=10450546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4894469A Expired GB1323701A (en) 1969-10-06 1969-10-06 Apparatus for carrying out electrical tests

Country Status (1)

Country Link
GB (1) GB1323701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192066A (en) * 1986-06-25 1987-12-31 Martindale Protection Limited Mains supply tester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192066A (en) * 1986-06-25 1987-12-31 Martindale Protection Limited Mains supply tester

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed