Summary
Resistance-based timing measurement methods promise to overcome the drawbacks of voltagebased methods and allow grounding on both sides of the circuit breaker, which means that all parts exposed to the tester are grounded. In this paper, the resistance-based method of dynamic resistance measurement is used to find the limitations of this method with multiple circuit breaker configurations. This work shows how ground-loop resistance influences the accuracy and reliability of operating timing tests and provides guidance on how to use it depending on the ground connection. In case of a single interrupting chamber circuit breaker, accurate timing tests were conducted for ground resistances as low as 1.3 mΩ during trip sequences on gas insulated switchgear.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | D1_12022_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Austria |
| Study committees | |
| File size | 9 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
NENNING Andreas - OMICRON electronics GmbH; BRUMMELHUIS Hugo - TenneT
Keywords
Both-Sides Grounded Timing Measurement, Dynamic Resistance Measurement, Timing Measurement Accuracy
