Measurement of earth fault loop impedance in circuits with time-delay type residual current devices

被引：1

作者：

Borowski, Kornel ^{[1
]}

Czapp, Stanislaw ^{[1
]}

机构：

[1] Politechn Gdanska, Wydzial Elektrotechn Automatyki, Ul G Narutowicza 11-12, PL-80233 Gdansk, Poland

来源：

PRZEGLAD ELEKTROTECHNICZNY | 2023年 / 99卷 / 02期

关键词：

residual current devices; earth fault loop impedance; measurement;

D O I：

10.15199/48.2023.02.60

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Measurement of the earth fault loop impedance in circuits with general-type residual current devices (RCDs) is problematic, because when using universal meters having a test current of 10-20 A, unwanted tripping of RCDs usually occurs. It is different in the case of circuits with time-delay type RCDs. This paper proves that the measurement can then be performed even with a high-current meter forcing a current with a peak value of about 200 A. The paper presents selected oscillograms of the test current and the results of the RCD's response during the measurement of the earth fault loop impedance.

引用

页码：289 / 292

页数：4

共 41 条

[1] Fault Loop Impedance Measurement in Low Voltage Network with Residual Current Devices
Czapp, S.
ELEKTRONIKA IR ELEKTROTECHNIKA, 2012, 122 (06) : 109 - 112
[2] MEASUREMENT OF GROUP TIME-DELAY AND CHECKING OF GROUP TIME-DELAY MEASUREMENT DEVICES
SOKOV, IA
SEMENOVA, VP
MEASUREMENT TECHNIQUES-USSR, 1971, 14 (09): : 1387 - &
[3] A NEW METHOD FOR MEASUREMENT OF EARTH FAULT LOOP IMPEDANCE
ROSKOSZ, R
IEEE TRANSACTIONS ON POWER DELIVERY, 1991, 6 (02) : 546 - 549
[4] Testing Sensitivity of A-Type Residual Current Devices to Earth Fault Currents with Harmonics
Czapp, Stanislaw
SENSORS, 2020, 20 (07)
[5] The effect of earth fault current harmonics on tripping of residual current devices
Czapp, Stanislaw
PRZEGLAD ELEKTROTECHNICZNY, 2009, 85 (01): : 196 - 201
[6] The Effect of Earth Fault Current Harmonics on Tripping of Residual Current Devices
Czapp, Stanislaw
2008 INTERNATIONAL SCHOOL ON NONSINUSOIDAL CURRENTS AND COMPENSATION, 2008, : 66 - 71
[7] A New Method of Fault Loop Resistance Measurement in Low Voltage Systems with Residual Current Devices
Czapp, Stanislaw
Borowski, Kornel
Dobrzynski, Krzysztof
Klucznik, Jacek
Lubosny, Zbigniew
2015 IEEE EINDHOVEN POWERTECH, 2015,
[8] The impact of DC earth fault current shape on tripping of residual current devices
Czapp, S.
ELEKTRONIKA IR ELEKTROTECHNIKA, 2008, (04) : 9 - 12
[9] Fault Loop Impedance Measurement in Circuits Fed by UPS and Principle of Safety Protection
Katarzynski, Jacek
Olesz, Marek
SUSTAINABILITY, 2020, 12 (23) : 1 - 17
[10] Behavior of Residual Current Devices at Earth Fault Currents with DC Component
Czapp, Stanislaw
Tariq, Hanan
Cieslik, Slawomir
SENSORS, 2022, 22 (21)

← 1 2 3 4 5 →