Martec helps clients implement the most cost-effective solutions based on the criticality of their assets (such as transformers). Have a look at this article from Dynamic Ratings on their Transformer monitoring technology.
Resource Category: Transformers
What compliance actions are needed to manage and monitor polychlorinated biphenyls fluids (PCBs)?
Polychlorinated biphenyl fluids have been around for a while. It is a manufactured insulating fluid initially used in the late 1960s and early 1970s due to its high flash point (inability to burn). However, this fluid has significant environmental impact issues as it breaks down in the environment at a prolonged rate.
Dissolved Gas Analysis – What do the gasses tell us?
Gassing of insulating oil is a common occurrence in an operating transformer. However, each gas has a story to tell. In terms of risk, each gas has a personality. The oil (a complex hydrocarbon), when stressed with heat or electrical activity will break down into simpler gases. These are also known as hydrogen, carbon monoxide, carbon dioxide, methane, ethane, ethylene and acetylene. Although oxygen and nitrogen may be identified in the analysis, they are not directly linked to a fault.
When to Apply Online Dissolved Gas Analysis Monitoring
When is it appropriate to apply online dissolved gas analysis monitoring (DGA)? It depends on the risk. In this TechTalk we will explore how to decide whether or not to apply online DGA.
Oil Sampling – Do it Right
Transformers are an expensive purchase. Most asset owners want the most of the transformer asset (the best return on investment). Condition monitoring is an essential tool to achieve this. The results give us an indication of the health of the unit, and that something is wrong internally and also to some degree the ageing of the unit.
Transformer Oil Sampling
In any condition monitoring instance, one needs to be able to trust the data! In all cases, the measurement or the taking of data is the beginning of the process. If this is not done correctly it can distort the data and result in incorrect decisions being made.
Transformer Oil Purification – Why it’s essential and what to watch out for
Transformers are commonly manufactured using cellulosic-based insulation materials which have an affinity for absorbing moisture – it’s in their DNA …
Furthermore, mineral oil (specifically) is severely impacted by moisture which will significantly reduce dielectric strength. Moisture can be present in either a dissolved or free-suspension state. Both conditions will have disastrous effects on the normal operation of a transformer.
Introduction Resin Cast Transformers
Researching the advantages of cast resin transformers, you may find the information available to be somewhat lacking. Many resin cast transformer companies mention that these transformers only need air to cool, due to its smooth coil surface eliminates heavy dirt build-up.