background image

9. STANDARDS

For more information on transformers in general, you can have a look at the following IEC and 

CENELEC standards:

IEC 60076

 : 

Power Transformers

IEC 60076-1

  

:  

General

IEC 60076-2

  

 Temperature rise

IEC 60076-3

  

:  

Insulation levels, dielectric tests and external clearances in air

IEC 60076-5

  

:  

Ability to withstand short-circuit

IEC 60076-10

  

:  

Determination of sound levels (used to be IEC 551)

IEC 60296

  

Specification for unused mineral insulating oils for transformers and    

 

 switchgear

IEC 60422

  

:  

Supervision and maintenance guide for mineral insulating oils in  

 

 

  electrical equipment.

IEC 60475

  

:  

Method of sampling liquid dielectrics

IEC 60567

  

:  

Guide for the 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 

 

  interpretation of dissolved and free gasses analysis

EN 50180

  

:  

Bushings above 1kV up to 36kV and from 250A to 3150A for liquid-filled 

 

 transformers

HD 398 

 

:  

Identical to IEC 60076

HD 428

  

Three-phase oil-immersed distribution transformers 50Hz, from 50 to    

 

  2500kVA  with highest voltage for equipment not exceeding 36kV

10. FINAL REMARK

In this manual the main issues and technical issues of the transformers are defined. Please 
keep in mind that this manual is written for qualified/experienced users only. For further 
information and technical support please contact us.

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: