- What is the difference between a transformer desiccant breather and a vent dryer?
Transformer desiccant breathers are designed to protect transformer reservoirs and rectifiers from the effects of moisture. Transformer reservoirs have little oil movement, whereas vent dryers are designed for drums and tanks which are being emptied and filled continuously, requiring higher flow rate capacity.
- Why use an AGM desiccant breather over a competitor’s product?
AGM transformer desiccant breathers are constructed with a tough UV stabilized glass loaded polycarbonate, which is extremely durable. They are fitted with a two way relief valve mechanism that eliminates all maintenance except only replacing the desiccant once it is saturated. All the breathers have a viewing window (there is 180 degree visibility on the small units) to easily determine when the desiccant needs to be replaced.
- How do I know which size desiccant breather to use for my transformer?
This can be established by looking at the maximum oil contents of the transformer or the MVA rating; please refer to our Selection Guide.
- How often do I need to change the desiccant?
This will depend on the size of desiccant breather you fit to the transformer, as determined by our Selection Guide.
- Do I have to purchase a new desiccant breather every time the desiccant is saturated?
No. All AGM transformer desiccant breathers are refillable. We provide refill packages of the blue silica gel 2-5 mm beads (1.32 lbs EA) and other repackaged amounts up to the standard packaging for both the blue silica gel and orange silica gel 2-5 mm beads (25 kg containers). The breathers can easily be refilled without any special tools.
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