Bowers PWAP125 Installation, Operation & Maintenance Manual Download Page 1

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Installation, Operation

& Maintenance Manual

01773 531531

[email protected]

www.bowerselec.co.uk

2021

Cast Resin

Earthing Transformers

Summary of Contents for PWAP125

Page 1: ...Installation Operation Maintenance Manual 01773 531531 I enquires bowerselec co uk I www bowerselec co uk 2021 Cast Resin Earthing Transformers...

Page 2: ...Tel 01773 531531 enquires bowerselec co uk www bowerselec co uk Bowers Group of Companies are proud to be members of 2...

Page 3: ...6 3 WORKING TEMPERATURE 6 4 VENTILATION 6 4 1 NATURAL FORCED VENTILATION OF THE INSTALLATION ROOM 6 4 2 FORCED VENTILATION OF THE TRANSFORMER 6 5 INSULATION DISTANCES 6 6 SAFETY DISTANCE 6 7 TIGHTENIN...

Page 4: ...USE AND MAINTENANCE MANUAL EN APPEND 1 0 REFERENCE STANDARDS 2 0 RATING PLATE 3 0 LIST OF COMPONENTS AND ACCESS 4 0 IMPORTANT NOTICE 5 0 RECEIVING HANDLING AND STORIN 5 1 RECEIVING 5 2 HANDLING 5 3 S...

Page 5: ...nufactured in Conformity with the latest IEC standards currently in force unless specifically agreed otherwise Directive 2004 108 EC Electromagnetic compatibility directive IEC 60076 11 Ed I 2004 05 P...

Page 6: ...e EU IMPORTANT Descriptions and drawings presented in this manual may differ in aspect from the design delivered They are provided for reference only and are subject to change without notice 2 IEC6007...

Page 7: ...ATE 3 0 LIST OF COMPONENTS AND ACCESS 4 0 IMPORTANT NOTICE 5 0 RECEIVING HANDLING AND STORIN 5 1 RECEIVING 5 2 HANDLING 5 3 STORAGE 6 0 INSTALLATION 6 1 SITE PREPARATION 6 2 STANDARD INSTALLATION CO 6...

Page 8: ...mer it is necessary to carry out the following checks Check the package and fastenings for signs of damage which might have occurred during shipping Check the transformer its parts and accessories for...

Page 9: ...d with Four 4 Lifting eyes for slings and shackles Lift with a maximum angle of 60 between the slings INSTALLATION USE AND MAINTENANCE MANUAL EN 60 MAXIMUM HANDLING e commissioning make sure that the...

Page 10: ...UMIDITY IT IS RECOMMENDED TO USE LOCAL HEATERS AND OR SILICA GEL MOISTURE ABSORBERS THE STORAGE TEMPERATURE MUST NOT BE LOWER THAN 25 C 5 3 STORAGE The transformer must be stored in a sheltered clean...

Page 11: ...nnections inspection and maintenance Adequate natural ventilation circulation of free cooling air Minimum electrical clearance in line with the local safety standards Special attention should be paid...

Page 12: ...necessary to provide suitable ventilation The working temperature of the transformer depends on its insulation and climatic class as per IEC 60076 11 Table 2 Insulation classes 6 2 STANDARD INSTALLATI...

Page 13: ...nditions and to prevent the transformer from exceeding its temperature limits it may be necessary to install air louvres in the installation room The air louvres must be located on 2 opposite walls on...

Page 14: ...RAGE 6 0 INSTALLATION 6 1 SITE PREPARATION 6 2 STANDARD INSTALLATION CO 6 3 WORKING TEMPERATURE 6 4 VENTILATION 6 4 1 NATURAL FORCED V INSTALLATION ROOM 6 4 2 FORCED VENTILATION 6 5 INSULATION DISTANC...

Page 15: ...the active parts of the transformer surrounding metal elements and ancillary devices according to IEC 60076 3 standard Table 4 shows the minimum insulation clearances to be respected INSTALLATION USE...

Page 16: ...lectricals Ltd Heanor Gate Road Telephone 01773 531531 24 hou E mail enquiries bow CAST RESIN TRAN Installation Ope Maintenance M 17 Insula oltage kV Nominal voltage at industrial frequency kV Atmosph...

Page 17: ...LV MV and earth points must be carried out respecting minimal insulation clearances section and position of the cables Thelockingandgrippingofallelectricalconnections andmechanicalfastenings must be p...

Page 18: ...Y BLOWING DRY COMPRESSED AIR AND WIPING THEM WITH A DRY CLOTH TO ELIMINATE ALL DUST AND CONDENSATION BEFORE CONNECTING THE TRANSFORMER 19 Bowers Electricals Ltd Heanor Gate Road Heanor Derbyshire DE75...

Page 19: ...D 1 0 REFERENCE STANDARDS 2 0 RATING PLATE 3 0 LIST OF COMPONENTS AND ACCESS 4 0 IMPORTANT NOTICE 5 0 RECEIVING HANDLING AND STORIN 5 1 RECEIVING 5 2 HANDLING 5 3 STORAGE 6 0 INSTALLATION 6 1 SITE PRE...

Page 20: ...ceed according to the following instructions Disconnect the unit from the mains on both medium and low voltage and connect it to the ground Connectthetappingplatesinthemostsuitablepositionaccordingtot...

Page 21: ...system according to the thermal protection relay manual Re connect the transformer to the supply 6 13 1 MV WINDING ADJUSTMENT ON SINGLE VOLTAGE If after energizing the primary side of the transformer...

Page 22: ...ase of two primary voltages e g 10 20 kV adjustment is required on both parts of the winding The voltages variation is obtained by putting the windings in line or parallel as shown in Figure 16 Figure...

Page 23: ...scheme Bowers Electricals Ltd Heanor Gate Road Heanor Derbyshire DE75 7GX Telephone 01773 531531 24 hours Fax 01773 716171 E mail enquiries bowerselec co uk www bowerselec co uk Figure 17 PTC scheme 7...

Page 24: ...our 4 PT100 sensors Temperature of pre alarm ventilation alarm and tripping as well as the mode of work automatic or manual is set in the menu The device can display temperature in each channel at any...

Page 25: ...ween the windings must be completely free of any obstructions to prevent over heating 2 3 Check of tightening of the MV and LV connections voltage tap changer links and of bolts yoke and spacer blocks...

Page 26: ...loading and short circuit protection and tripping of the corresponding automatic switch This check should be carried out preferably by means of suitable equipment that allows simulating a real damage...

Page 27: ...fied and properly trained personnel equipped with all necessary protection devices according to local regulations should perform such works or inspections Whilst Bowers Electricals Ltd are NOT respons...

Page 28: ...due to loosening of the tightening bolts Tighten the bolts of the core according tightening torque See Paragraph 6 7 2 Actuation of the protection relay Alarm or Tripping Check and compare the current...

Page 29: ...Electricals Ltd if the noise persists after a few hours Poor electrical or sensor contacts Poor or insufficient room ventilation Check clean and if necessary tighten all sensor contacts Check the roo...

Page 30: ...act Bowers Electricals Ltd 6 Insulation failure Presence of dust or dirt on the coils Check the coils for any visible damage Continuous overload Check load and compare with the rating plate Mechanical...

Page 31: ...24 hours E mail enquiries bowerselec co uk www bowerselec co uk Registered at the above address in England Company No 1955004 VAT Ref 416361371 Tel 01773 531531 enquires bowerselec co uk www bowersel...

Page 32: ...el 01773 531531 enquires bowerselec co uk www bowerselec co uk Installation Operation Maintenance Manual 01773 531531 I enquires bowerselec co uk I www bowerselec co uk Cast Resin Earthing Transformer...

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