Silica gel silicon dioxide is a colorless, granular, porous material with desiccating properties, made out of sodium silicate. A micro porous structure of interlocking cavities gives a very high surface area 800 square meters per gram. Desiccant breathers use a seethrough polycarbonate body filled with a silicagel absorbent that holds as much as 40% of its weight in moisture. No need for unnecessary maintenance or replacing silica gel in the field. Breathers are installed on electrical transformers conservator type and. The pdtrac monitor provides maintenance professionals with an opportunity to continuously monitor equipment for insulation deterioration. The gel changes from a blue to light pink color when saturated. So it is necessary that the air entering the tank is moisture free. When the silica gel inside a traditional breather is fully saturated, it will no longer absorb atmospheric moisture as it. A second filter can give added protection, as clean, dry air continues to flow through the breather vent. Data logger card, software application cd and usb cable.
The check valves provide a closed system until airflow is required which extends the service life of the desiccant. Silica gel crystals can be regenerated by heating it inside a ventilated oven at 110150 c until the color becomes deep blue again and hence it becomes moisture free and ready to use again. The breather consists of an oil trap and a silica gel drier. Additional software modules allow the user to extend diagnostic capabilities to include, for example, air gap eccentricity. Breathers provide an economic and efficient means of controlling the level of moisture entering electrical equipment during the change in volume of the cooling medium andor airspace caused by temperature gradients. The silica gel absorbs the possible water vapor or moisture in the air. Silica gel is an amorphous form of silicon dioxide, which is synthetically produced in the form of hard irregular granules having the appearance of crystals or hard regular beads. All our transformer breathers are filled with envirogel, which is a selfindicating silica gel desiccant. There are various characteristics of silica gel breather and some of them include its working as a perfect dehumidifier. This instrument will automate measurements and store recorded data for up to 2 years. Tricos watchdog breathers use a color changing technology to be a visual indicator of maximum adsorption, changing from gold to dark green letting you know its time to quickly change your desiccant breather. Choice of the breather size or maintenance inte rval for use on transformers the choice of the breather size or maintenance interval is directly related to the quantity of the silicagel contain. Desiccant air breather air flow up to 5,500 l min fastening by means of flange, thread, or slip fit connection installation sizes.
The art of transformer maintenance, inspection and repair eep. This 3d animated video explains how a silica gel dehydrating breather works. A well maintained silica gel breather will generally operate with a dew point of 35 o c as long as a large enough quantity of gel has been used. Breathers commonly use silica gel granules that can adsorb up to a third of their. The system consisting of oil conservator with rubber sack does normally not require any other maintenance than inspection of the silica gel breather. Desiccant breathers are quite literally the first line of defense against contamination and should be an integral part of any proactive maintenance and reliability program. Insulating oil reacts with moisture can affect the paper insulation or may even may lead to internal faults. Envirogel envirogel desiccant is the latest alternative to blue cobalt chloride indicating silica gel. Mobil lubeguard desiccant breather filters are powerful preventive maintenance tools that protect industrial and commercial equipment containing hydrocarbon and other nonaqueous fluids. Transformer condition monitoring smart breather wholesale. The transformer bladder, oil, and insulation system can degrade over time due to excess. Cat litter, in seconds, can absorb pets urine and fecal odor, can curb bacterial growth, and maintain the surface of cat litter. Tsd0198 messko mtrab selfregenerating silica gel breathers.
There are many factors which can affect the size selection for a transformer, some being. Silica gel is an adsorbent that helps in adsorbing the moisture, humidity, odor etc, from the products and helps in maintaining their effectiveness. Dry breather desiccant is a kind of plastic container which contains indicating silicon silica gel and other dehumidification materials which filter the moisture in the air and prevent the aging of the electric insulation oil inside the transformers. Traditional breathers require continual maintenance taking note of gel color changes indicating the need for. The messko mtrab maintenancefree dehydrating breather is the perfect. Qualitrol releases new series of smart transformer breathers for. Why silica gel breathers just dont cut it drytech inc.
The color of the silica gel crystals is generally used as an indicator of when the silica should be replaced. Qualitrol stb000 main tank and ltc smart transformer. The art of transformer maintenance, inspection and repair. Yearly basis transformer maintenance schedule the auto, remote, manual function of cooling system that means, oil pumps, air fans, and other items engaged in cooling system of transformer, along with their control circuit to be checked in the interval of one year. The silica gel breather, we provide, is up to the capacity of 2000kva. Why silica gel breathers just dont cut it within the past few years, the growing emphasis on proper operations and maintenance procedures has created a need for better solutions to protect major wind turbine components in particular, gearboxes and transformers. If silica gel becomes pinkish, it should be replaced. Moisture is absorbed as air passes through the silica gel. Our prices are unbeatable and quality is excellent. It is used as a desiccantmoisture adsorbent to control local humidity in order to.
As the load on a transformer increases, the temperature of transformer oil increases which cause expansion in oil volume and. Silica gel breather for transformer silica gel desiccants. Comem sdb maintenancefree transformer breather, from insulect. Abb offers a wide range of selfdehydrating breathers for various applications.
Envirogel indicates an orangeyellow colour when active and changes to green when the desiccant becomes saturated. Measurement of temperatures of joints, bushings etc. Specification of the silica gel used in transformer breather. Silica gel capacity of 25kg fume duct piping reactivation unit model no. The manufacture of silica gel for breather transformers is a specialised process, and the requisite quality standards have to be maintained at every stage. This is the cream of the crop in terms of air breather. Application the qualitrol stb series smart transformer breather removes. The silica gel is a very good absorber of moisture. Utilizes a color changing silica gel as a secondary indication that regeneration took place giving peace of mind.
The beaded, selfindicating envirogel should be replaced once the colour has changed from orange to green, as indicated on the label attached to the breather. Transformer breather helps to prevent atmospheric moisture. Watchdog desiccant breathers are a unique particle filtration and water removal system. Use of silica gel breather during the breathing process, the incoming air may consist of moisture and dirt which should be removed in order to prevent any damage. The xseries air breather incorporates 2 check valves and a reusable top cap.
Silica gel silica gel is a granular, porous form of silica made synthetically from sodium silicate. This breather represents a new era in smart transformer breathers. Conventional dehydrating breathers are filled with silica gel or similar desiccants. China maintenancefree dehydrating breather for transformers. Dry out flowers pills and vitamins bulk pet food transformer breathers gun safes ammunition boxes. They prevent destructive contaminants from entering industrial equipment as air is breathed in and out due to thermal expansion or fluid level changes. Continuous moisture absorption is ensured by two independent silica gel tanks working alternatively on timebased or conditionbased principles. The oil trap prevents any permanent contact between the silica gel and the moist ambient air and also filters the inflowing air. At the top of the breather there is a sponge which should prevent particles of the silica being drawn into the oil circuit. The color change in the silica indicates when the filter needs to be replaced. Maintenancefree dehydrating breathers from the messko mtrab. Silica gel sa aims to give you to give you the best quality and service. The mass of silicagel necessary for the proper functioning is given approximately by a function of 6 variable quantities.
Rseries breathers are ideal for these high vibration, mobile applications, including offroad, construction and farm vehicles. Reduce maintenance costs with learned transformer breathing patterns and. Rseries desiccant breathers are designed to easily mounted in place of standard breather caps. Multifunction condition based monitoring software of substation assets. Freshly regenerated gel is very efficient, it may dry down air to a dew point of below 40 o c. A look at the market leading dualtank design of the comem sdb series transformer breather that is now available in 3 configurations to suit a. Transformer breathers provide an economic and efficient means of controlling the level of moisture entering the conservator tank during the change in volume of the cooling medium andor airspace caused by temperature gradients. What is the purpose of the desiccant breathers used in a. Hence the air is made to pass through the silica gel breather, which will absorb the moisture in the air and ensures that only dry air enters in. The picture shows a silica gel breather of transformer. The oil trap prevents direct contact of the air with the silica gel until it is drawn in, and also traps particles. Fluxtrac monitor the fluxtrac monitor is a sophisticated online monitor for remotely acquiring magnetic flux data from air gap mounted flux probes in synchronous motor and generator rotors. Smart breather transformer series removes moisture from air entering oilfilled transformers or load tap changer conservators with options conducive to harsh environmental situations. Energy queensland asset lifecycle management is retrofitting messko.
It can absorb 1540% by weight of moisture depending on the relative humidity of the exposed atmosphere. Full installation and maintenance instructions are supplied with each brownell transformer breather. Silica gel breather is made from the finest quality raw material of blue silica gel to sustain the test of time. Lubeguard filters feature an advanced, patented design with a waterabsorbing agent. Transformer accessories silica gel breather type s. Silica gel crystal has tremendous capacity of absorbing moisture. We supply breathers upto the capacity of 2000kva transformers. It increases transformer reliability, reduces operating costs, is maintenancefree and easy to install. Silica gel is used in breather transformers for controlling the level of moisture and prevents it from entering the equipment. Silica gel breather transformer silica gel breather. Others, cheque, cash in advance cid, cash advance ca, cash on delivery cod, cash against delivery cad. Silica gel in chennai, tamil nadu get latest price from.
Qualitrol stb000 main tank and ltc smart transformer dehydrating breather. R121 silica gel desiccant breather delta adsorbents. The easiest way for atmospheric moisture to enter the transformer is through a fully saturated traditional breather that is past its maintenance requirement. This minimizes the need for periodic visual inspections and eliminates the high costs incurred through having to regularly replace the costly desiccant because it has become saturated. Dessicant units are designed with a seethrough polycarbonate body filled with a silicagel absorbent designed to hold as much as 40% of its weight in absorbed moisture.
X521 desiccant air breather molecular sieve silica gel. A well maintained silica gel breather will generally operate with a dew point of. Breather, as the name suggest is just an arrangement though which a transformer breath air. For typical applications transformers, onload tapchangers or industrial processes, conventional dehydrating breathers filled with silica gel or similar desiccants are still used today in many places. The air then passes again back through the silica gel, partially regenerating it and extending the life of the breather.
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