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GE KELMAN 845 Integrated
On-Line Multi-Gas DGA Integrated For Thermal & Electrical Measurements
Integrated Electrical and DGA for Comprehensive Transformer Monitoring & Diagnostics. The Multilin 845 offers advanced transformer health monitoring and diagnostics through advanced notification of potential issues before they become critical. The Multilin 845 features detailed learned data, summarized pre/post-fault records, and integration with GE’s DGA devices to collect, trend, and analyze a transformer’s fault gasses. This enables operators to minimize costly unplanned outages and equipment failures.
Integrated DGA Operation In addition to monitoring a transformer’s electrical characteristics such as voltage, current, power, load, and demand through metering data, oscillography, thermal elements, and harmonics, the 845 also provides integrated Dissolved Gas Analysis (DGA) with the ability to collect, trend, and analyze a transformer’s fault gasses. With integrated connectivity to GE’s Kelman composite and multi-gas DGA devices, the 845 is able to detect and alert operators to electrical or chemical conditions (i.e.: incipient and/or insulation degradation) that could result in a fault or asset failure
GE’s transformer M&D devices offer single and multi-gas (DGA) measurements in oil filled transformers for detecting insulation degradation, incipient faults and monitoring various mechanical characteristics. Integrated operation of a transformer protection relay with M&D DGA device(s) helps in creating an advanced technology platform for transformer monitoring with data & information correlation between protection and DGA data.
DGA Models – Industry Standard DGA models such as Duval, Key Gas, and Gas Ratios are utilized by the 845 to provide analysis of the measured gas data. Presented graphically, the 845 converts static data to actionable information providing operators with a clear view of changes to the chemical characteristics and composition within the transformer.
Learned Data Record – The 845 captures key electrical and DGA data values during transformer energization and continuous operation to trend and analyze transformer performance. Data is summarized and presented to operators through a pre-formatted Learned data report to clear indication of changes to measured parameters. Up to 365 latest records are supported in the 845 relay. This data is cumulatively visualized through the transformer model screens, enabling operators to identify trends and the correlation of key electrical and DGA parameters.
Transformer Integrated Digital Fault Record – Integrated transformer digital fault record captures data required to analyze the stress created by an internal or through fault occurrence on the transformer and identify any possible failure modes in order to take the necessary preventive & maintenance actions.
Transformer Health Report – Provides a pre-formatted, easy to read, Health Report, in PDF format, which captures key operational data of the transformer combining both electrical and DGA characteristics.
Transformer Energization Record – Energization record captures the transient record (oscillography) for initial 10 cycles and computes various electrical data representing stress experienced by transformer during the energization event. Energization record will be computed specific to select or configured winding source in general setup by user and up to 6 latest records will be available for display.
