The presence of oxygen in power transformer oil has been shown to accelerate the aging process of the solid insulation. With the increased use of sealed transformers, the issue of air leaks as a source of oxygen has grown in importance. Such air leaks are often caused by embrittlement of gaskets or the rubber bag.
In order to maximize a transformer's operational life its oxygen levels should remain as low as possible. Monitoring that proper sealing is maintained against ambient air ingress through total gas pressure measurement is a groundbreaking new method for ensuring just that.
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