Calibrating device for grounding connection parameter testing systems

A technology for verifying devices and characteristic parameters, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve problems such as poor use environment, reduced system accuracy and safety performance, high frequency of use of the grounding device characteristic parameter test system, etc.

Inactive Publication Date: 2012-09-19
NANJING ANJITE ELECTRICAL TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, due to the high frequency of use of the grounding device characteristic parameter test system, the poor use environment, and the influence of factors such as the life of electronic devices and the aging of mechanical devices, the accuracy and safety performance of the system will be reduced, and there are uncertain sa

Method used

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  • Calibrating device for grounding connection parameter testing systems
  • Calibrating device for grounding connection parameter testing systems
  • Calibrating device for grounding connection parameter testing systems

Examples

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Embodiment Construction

[0012] Such as figure 1 As shown, the verification device includes a housing on which an interference signal simulation component display 3, a loop impedance simulation component display 5, an impedance standard display 7, and an adjustable frequency standard signal source display 14 are installed. Loop input interface terminal 1, current loop output interface terminal 9, verification device sampling voltage interface terminal 11, verification device sampling voltage interface terminal 12, interference signal simulation component display 3, loop impedance simulation component display 5, impedance standard display 7, can The frequency modulation standard signal source display 14 is respectively connected with the interference signal simulation component 2, the loop impedance simulation component 4, the impedance standard device 6, and the adjustable frequency standard signal source 13 in the housing, forming a verification device as a whole.

[0013] (1) When testing the accura...

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Abstract

The invention discloses a calibrating device for grounding connection parameter testing systems. The calibrating device comprises a case, an interference signal simulation module display (3), a loop impedance simulation module display (5), an impedance standard display (7) and an adjustable frequency standard signal source display (14) which are mounted on the case are respectively connected with an interference signal simulation module (2), a loop impedance simulation module (4), an impedance standard (6) and an adjustable frequency standard signal source (13) in the case, a current loop input interface terminal (1), a current loop output interface terminal (9), a first calibrating device sampled voltage interface terminal (11) and a calibrating device sampled voltage interface terminal (12) are arranged on the case, and thereby the calibrating device is formed. The impedance standard is embedded in the calibrating device, real-time frequency, current and voltage values are acquired, and a standard impedance value is compared with the impedance value displayed by a tested system in order to determine the accuracy of the tested system.

Description

technical field [0001] The present invention relates to a verification device, in particular to a verification device for a grounding device characteristic parameter testing system, relating to the verification of the grounding device characteristic parameter testing system in electric power systems, meteorological systems, and large-scale factories and mines, including a frequency-selective voltage ammeter and a relay protection tester Verification and calibration of the accuracy of power measuring instruments such as AC and DC indicating instruments and electric energy meters. Background technique [0002] As we all know, the characteristic parameters of grounding devices in power systems, meteorological systems, and large-scale factories and mines include power frequency characteristic parameters such as grounding impedance, electrical integrity, contact voltage, and field surface potential gradient. Unsafe conditions can be found in time through the grounding device chara...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 杨玉东姜仲秋马俊超马国栋
Owner NANJING ANJITE ELECTRICAL TECH
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