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Kelman Minitrans - Click to view details

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Kelman Minitrans - Click to view details Multi Gas System Transformer Condition Monitoring System


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Kelman_Minitrans_Product_Brochure.pdf (1.31 MB)
Cost-effective on-line DGA & moisture for transformers

Product Overview

Knowledge of the condition of transformers is essential for all electrical networks and on-line monitoring of transformers is an increasingly vital component of successful asset management programs. The information provided by multi-gas on-line DGA allows valuable asset capabilities to be maximised and expensive failures to be avoided.

Dissolved Gas Analysis (DGA) and moisture measurement of the insulation oil are recognised as the most important tests for condition assessment of any tank of a transformer. Traditionally performed in a laboratory environment, the MINITRANS provides for partial on-line discrete DGA and moisture monitoring.


Key Benefits
  • Cost effective on-line DGA
  • Remote insight into transformer condition
  • Discrete measurement of key gases associated with arching cellulose degradation and general fault conditions
  • Faults can be detected in infancy
  • Generic fault type can be classified from results
  • Transformer load and output can be optimised safely
  • Aids condition based and predictive maintenance strategies
  • Available with AC or AC/DC power supply

Applications

Multi-Gas DGA has traditionally been confined to infrequent off-line laboratory analysis, forming part of time based maintenance strategies. Globally the average age of transformers continues to increase, whilst in comparison to historical experience a larger percentage of new transformers encounter faults in their early years of operation. This means the possibilities of rapid aging, unplanned outages and even catastrophic failures between off-line tests also increases leading many asset owners to adopt on-line DGA monitoring equipment more suited to condition based/predictive maintenance strategies.

The MINITRANS facilitates entry into discrete on-line DGA and moisture monitoring for transformers and other oil insulated filled electrical equipment. Discretely measuring 3 key gases: Hydrogen; Carbon Monoxide and Acetylene; plus Moisture, MINITRANS gives insight on developing faults, paper degradation and electrical arching providing trending of gas-in-oil through its close integration with GE’s powerful Perception software suite and/or users own software, historian and SCADA systems. At a price that facilitates higher volumes of monitor deployment, MINITRANS can be utilised to monitor any size of transformer but is most widely employed to expand multi-gas on-line DGA coverage beyond the typical candidates of large, system critical or compromised transformers helping asset owners incorporate on-line DGA across a larger portion of their fleet, with a view to extending asset life, preventing unexpected failure and operating on a condition based/predictive maintenance schedule.

  • Auxiliary GSU transformers
  • Transmission transformers
  • On load tap changers
  • Distribution transformers
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