On-line DGA & moisture for transformer with on-load tap changer
Dissolved Gas Analysis (DGA) of the insulating oil is recognized as the most important tests for the condition assessment of transformers. Multi-gas DGA has traditionally been confined to infrequent off-line manual sampling. As the average age of transformers globally continues to rise, the possibility of rapid ageing, unplanned outages and even catastrophic failure between off-line tests also increases, leading many asset owners to adopt on-line DGA monitoring of equipment to increase network reliability.
The Kelman™ TAPTRANS is designed for transformers with an On-Load Tap Changer (OLTC), which is recognised as one of the most vulnerable parts of the transformer and which accounts for a large portion of unplanned outages. It offers discrete multigas on-line DGA and moisture monitoring, separating the main and selector tanks from the diverter tank to avoid any risk of contamination. Utilizing photo-acoustic spectroscopy (PAS) measurement technology, well suited to field application, it provides laboratory challenging levels of precision and repeatability. Full 9 gas oil sampling and analysis can be performed as often as every hour on a single tank and up to once every three hours if all three possible oil tanks are connected.
Through close integration with GE’s powerful Perception™ software suite and/or user’s own software, historian and SCADA systems, the TAPTRANS offers full gas-in-oil trending, analysis and diagnostic capabilities including various diagnostic methods prescribed by international standards.
Key Benefits
Malaysia
