background image

3.3 ACCEPTANCE PROCEDURE 

Upon arrival of a transformer and its accessories everything should be sure closely inspected.

The following points should be checked before acceptance:
•  Is there any damage on the crate or box?
•  Is there any rust or is the paint on the transformer or its accessories damaged?
•  Are the transformer tanks or accessories damaged?
•  Are there any oil leakage?
•  Are bushings of H.V or L.V damaged?
•  If the oil level is visible: is it high enough?
•  Is the delivery complete? 
•  Check the number of transformers, the number of boxes of accessories and check that all 
    accessories are fitted or present.
•  Check the information on the nameplate.
•  Is the paint of tank damaged?

3.2 TRANSPORTATION BY RAILWAY OR SEA

Transformers are usually packed in strong crates, boxes or containers. When packed in crates, 
the transformer’s lifting lugs can be used to lift the entire equipment.

Under no circumstances may moisture be allowed to penetrate into the transformer. For 
hermetically sealed transformers - both those with gas cushions and those with integral 
filling – this is not a problem. The liquid cannot come into contact with the surrounding air. For 
transformers with an expansion tank the infiltration of air during transportation and storage is 
prevented by: either placing a gasket in the de-aerator (breather) (which must be removed before 
the transformer is energized) or replacing the silica gel air breather with a blind flange that 
prevents the infiltration of air. In that case the air breather is supplied separately. Assembly 
instructions are included with the air breather.

All deviations should be reported immediately to the manufacturer. If no report has been 
received within one week of the delivery, we shall assume that the delivery arrived complete 
and in good condition.

Ulusoy Distribution Transformers Maintenance, Operation, Installation and Instruction Manual 

Summary of Contents for Ulusoy

Page 1: ...Ulusoy Distribution Transformers Maintenance Operation Installation and Instruction Manual www eaton com...

Page 2: ...ary assistance to the maintenance personnel to facilitate a periodic inspection of the transformer and to indicate the steps that they should follow to effect a more detailed examination of the active...

Page 3: ...n imminently hazardous situation which if not avoided will result in death serious personnel injury and property damage WARNING indicates a potentially hazardous situation which if not avoided could r...

Page 4: ...an be used to lift the entire equipment Under no circumstances may moisture be allowed to penetrate into the transformer For hermetically sealed transformers both those with gas cushions and those wit...

Page 5: ...HV or low voltage LV insulators to guide the transformer when moving it During the transport or the handling it is recommended to use only the special lifting eyes and tow attachments Angle between t...

Page 6: ...of individual pieces WARNING Unless indicated otherwise storage temperature must be between 25C and 50C Monitoring and checking the transformers during storage Preferably only fully assembled liquid f...

Page 7: ...nical Connections Decide and choose the cable cross section according to the system current and voltage Be sure that the surfaces are clean Dirty surfaces may cause isolation and contact problems 6 IN...

Page 8: ...and nut in 8 8 steel C Cover frame Bolt and nut in stainless steel pitch 60mm cork gasket pitch 90mm nbr gasket D Busbar bushings Fixing on cover Top piece onto bottom piece 5 4 6Nm 20 25Nm 20 25Nm 8...

Page 9: ...2 Table 2 Outdoor Electrical Clearance Un H V side voltage of rated level All clearances are in mm Electrical clearances are given for 1000m After 1000m till 3000m each 100m distance must be increase...

Page 10: ...pecifications should be added Oil leakage must be prevented with proper procedure If transformer is hermetically sealed the manufacturer should be informed as soon as possible Dehydrating breather sho...

Page 11: ...3 5 Years Conservation Tank Oil Leakage Every 2 Years Annually Oil Oil Dielectric Test All periodical controls are listed as a table below Table 3 Periodical Check Pressure relief device T 10 must ne...

Page 12: ...w Oil Sample Desired Value New Oil Filling Transformer Oil Sample Desired Value Oil Sample From Operating Transformer Proper Must Be Removed Pcb Analysis ASTM D 4059 ppm NA NA 50 50 Test Name Method U...

Page 13: ...sformers Current transformer Winding temperature indicator With and without contact thermometer 8 ACCESSORIES 8 1 STANDARD COMPONENTS AND ACCESSORIES Rating plate HV porcelain bushing LV porcelain bus...

Page 14: ...sampling of gases and of oil from oil filled electrical equipment and for the analysis of free and dissolved gases IEC 60599 Mineral oil impregnated electrical equipment in service Guide to the inter...

Page 15: ...about the surface protection quality paint of the transformer 7 Is there any oil leakage on the transformer Invalid for dry type distribution transformers 8 Is there any conspicuous point at which you...

Page 16: ...90 312 502 06 63 Eaton s mission is to improve the quality of life and the environment through the use of power management technologies and services We provide sustainable solutions that help our cust...

Reviews: