Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 08: Electrical Works  17 of 124  8.5.3.1 Dry type transformers  8.5.3.2 Testing and commissioning  It will be 34.5 kV/0.4 kV voltage level in accordance with the facility energy input. (As per Local Energy  Supplier’s Instructions.).  Unless it is stated otherwise in this specification and appendices, transformers will be manufactured and tested  according to Turkish Standards (TS) and International Electrotechnical Commission (IEC) standards latest  versions given below:  Power transformers shall be routine tested at the manufacturer's works in accordance with BS EN 60076 The Engineer will require witnessing the following tests:  Further witness tests shall also be carried out in accordance with the following:   Measurement of winding resistance.   Ratio, polarity and phase relationship.   Impedance voltage.   Load losses.   No-load losses and no-load current.   Insulation resistance.   Induced over-voltage withstand.   Separate source voltage withstand.   Impulse voltage withstand.  If the manufacturer can provide evidence covering impulse voltage withstand tests for transformers of  similar type and design, Type Test certificates will be acceptable.  8_Vol3_d4 3_Section 8 electrical works_en_GIR rev6.doc   Three-phase, two coil   Dry type that has epoxy resin covered coils  Indoor   Protection level IP31   Voltage adjusted at idle  TEDAŞ-MLZ/99-031.B  TS EN 60076-11  TS IEC 60905  TS 7451/IEC 60726  : Dry type transformers  TS IEC 60905 : Loading rules for Dry type transformers TS 267/IEC 76 : Power transformers  HD 464 S1/A2 : Dry type transformers  HD 464 S1  : Dry type transformers  HD 538  : Three phase dry type distribution transformers  ISO 9001 