Title :
A new ultra lightweight method for Static and dynamic resistance measurements
Author :
Stanisic, Zoran ; Neimanis, Roberts
Author_Institution :
Megger Sweden AB, Stockholm, Sweden
Abstract :
S/DRM testing methods usually use long, heavy cables to connect high current source from ground to the circuit breaker. Alternative is to move current source close to the circuit breaker by using heavy batteries, transformers, dc/dc etc. In this proposed method batteries are replaced with ultra capacitors and constant current charger, resulting in a few hundred grams of powerful current source, capable to generate few hundred amperes into the breaker contacts, or any other power contacts. Measuring voltage drop across the circuit breaker and the current through it continuously monitors discharging of ultra capacitors, giving a high accurate resistance value of the measured object.
Keywords :
circuit breakers; measurement systems; breaker contacts; circuit breaker; constant current charger; dynamic resistance measurements; power contacts; static resistance measurements; transformers; ultra capacitors; ultra lightweight method; Battery charge measurement; Cables; Capacitors; Circuit breakers; Circuit testing; Current measurement; Electrical resistance measurement; Power generation; Transformers; Voltage measurement; circuit breaker; component; contact resistance; ultra capacitor;
Conference_Titel :
Electrical Insulation (ISEI), Conference Record of the 2010 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-6298-8
DOI :
10.1109/ELINSL.2010.5549820