Oil Filtration Unit
On-Line Oil Filtration Unit For OLTC’s

Oil Filtration Unit

On-Line Oil Filtration Unit For OLTC’s

OLTC Oil Filter Unit Technology

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Technology is of Online On-load Tap Changer Filtration system for maintaining the dielectric strength and BDV value of Oil as per IEC recommendation. This equipment is capable of being fitted to On-load Tap Changers online and will work on preprogrammed set schedule or on number of tap changes. Since it eliminates the deposition of carbon particles in the tap changer oil compartment, Periodical maintenance of the Tap changer will be extended service if this equipment is being installed with the respective OLTCS

FEATURES & BENEFITS

On-Line oil filtration (During Service Condition) & removes the carbon content from OLTC oil

Induction provided to alert the Replacement

Fully automated & No Manual interference is required

Improves BDV & removes water content from OLTC oil which increases the overhauling durations & life span of Tap changer

New installation & retrofitting can be done with your site installed OLTC with an hour & cartridge replacement can be done within 15 mins

Remove carbon particle up to 1 Micron & 1.4 Liters of dissolved Moisture as per IEC recommendation

Adequate Alarm features to identify abnormal conditions

TRADITIONAL/CONVENTIONAL BREATHERS

Traditional breathers contains a normal silica gel crystals. The color of the silica gel crystals is generally used as an indicator of when the silica should be replaced. It is dark blue when dry; when the gel absorbs moisture and becomes saturated, the color changes to pink (Figure shown below).
Traditional breathers require continual maintenance taking note of gel color changes indicating the need for replacement. The silica gel can be regenerated or discarded once the color changes Traditional breathers are generally a cost-effective solution for initial installation but require frequen servicing depending on moisture levels in the atmosphere thereby incurring additional cost every hal year once.

Disadvantages of Traditional Breathers

High risk for transformers if maintenance and replacement is not or is improperly carried out

Regular visual inspection required throughout the entire service life of the transformer to check the moisture level of the desiccant

Regular replacement of the desiccant approx. once in every 6 month is required throughout the entire service life of the transformer

Enormous costs due to frequent refilling of desiccant, in particular in regions with high humidity

Environmental impact, disposal problems, and considerable costs due to consumed desiccant

Ineffective dehydration

SMART MAINTENANCE FREE BREATHERS

The Smart Breather is the innovative technology for replacement for the traditional breathers which are being used in the transformers a over the many decades (Installation image shown below).
The Smart Breather contains a silica gel crystals which have a tremendous capacity of absorbing moisture. As air passes through these crystals in the breather, the moisture in the air is absorbed by the silica gel crystals. Once the Humidity of the silica gel crystals reached the preset limit, the Humidity sensor immersed in the desiccant triggers the signal to PLC therefore the breathing process of the transformer been shifted to the auxiliary chamber & the inbuilt Heater & exhaust fan activates the functions of heating of silica gel & exhaust the evaporated moisture from the system. Once the heating is completed it retrieves to the main silica gel chamber & the similar heating process has been activated in the auxiliary chamber to maintain the auxiliary system healthy all the time. This completely automated process repeats once in a year in general, based on the humidity level addressed in the silica gel. Therefore the transformer remains moisture free & attains the recommended PPM levels throughout the year.

Key Features of Smart Breathers

Humidity sensor - activate the system identifying the Humidity level in silica gel.

Heater - To dry out silica gel.

Exhaust Fan - exhaust moisture during heating process.

Microcontroller unit - initiate the automation process.

Graphic Interface Through RJ45

Data Storage - To maintain.

Desiccant Cobalt free & environmental friendly.

Remote/scade monitoring through RS485

ADVANTAGES

Advantages

EMR Smart Breather

Traditional Breather

Inspection/Maintenance

Not Required

Only in 6 Months

Efficiency

15+ Years

6 Months

Lifetime Cost

Only Initial Cost

Increase Every Year

Graphic Interface

Yes

No

Danger to Transformer

No

Yes

Environmental Pollution

No

Yes

Condition Monitoring

Laptop/PC

On-Site

Operation Log

Yes

x No

Equipment Spares

Not required

Required

Spares_1

For superior performance and increased life use genuine spares from EMR

Training

Training

EMR offers training on all aspects of our various product offerings

Retrofit
Increase the life expectancy of transformers with retrofit solutions from EMR
We provide a wide range of spares and accessories for your mission critical equipments. We are committed to provide best customer services to ensuer smooth operations at all times

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