ABB PTTR SPAIN Zaragoza. The product: Cast coil transformers ABB BA Transformers - 1-5/7/2007
Dry Type Vacuum Cast Coil Transformer INTRODUCTION ABB BA Transformers - 2 -
Product Portfolio II Dry Type Vacuum Cast Coil transformer ABB BA Transformers - 3-50kVA to 30 MVA High Voltage up to 52 kv Classes E2, C2, F1 Partial discharges lower than 10 pc Insulation system temperature: 155ºC (F)
Product Portfolio I Special Transformers ABB BA Transformers - 4 - For industrial applications with semiconductor converter Stationary transformers for traction systems For marine applications For windmill applications Single phase transformers Excitation transformers Low voltage higher than 1,1 kv
Vacuum Cast Coil Main Advantages ABB BA Transformers - 5 - Reduced environmental contamination No fire hazard Maintenance-free Great resistance to short circuits Great capacity to support overloads Great performance towards seismic phenomena Suited for damp and / or contaminated areas Cuts cost on civil installation works and due to particular design they can be repaired on site Self-extinguishing In the event of a breakdown there is no risk of leakage of flammable and / or contaminating substances
Dry Type Vacuum Cast Coil Transformer Vacuum Cast Range ABB BA Transformers - 6 -
Standard Technical Features - SCC SCC. Small cast Coil ABB BA Transformers - 7 - Standards CE/IEC 60726, CENELEC HD 464, UNE 20-178, DIN 42563 Rated Power up to 2,5 MVA Rated voltage up to 36 kv Cooling AN Protection degree IP00 HV winding Encapsulated, Aluminium foil LV winding Prepreg layer between turns, Aluminium full width Temperature rise 100 k Insulation system temperature 155 ºC (Class F) Partial discharges < 10 pc
Standard Technical Features - LCC LCC. Large cast Coil ABB BA Transformers - 8 - Standards CE/IEC 60726, CENELEC HD 464, UNE 20-178, DIN 42563 Rated Power up to 30 MVA Rated voltage up to 52 kv Cooling AN Protection degree IP00 HV winding Encapsulated, Aluminium foil LV winding Prepreg layer between turns, Aluminium full width Temperature rise 100 k Insulation system temperature 155 ºC (Class F) Partial discharges < 10 pc
Dry Type Vacuum Cast Coil Transformer Technical Features ABB BA Transformers - 9 -
Standard Technical Features I Insulation levels according to IEC 726 UM F.I.kV ef BIL List 1 BIL List 2 ABB BA Transformers - 10-1,1 3,6 7,2 12 17,5 24 36 52 3 10 20 28 38 50 70 95 20 40 60 75 95 145 40 60 75 95 125 170 250
Special Technical Features II Environmental, Climatic and Fire class Environmental, Climatic and Fire class Environmental: E2 environmental class certificate in accordance with CENELEC and UNE standards Climatic: C2 climatic class certificate in accordance with CENELEC and UNE standards Fire class: F1 burning behaviour certificate in accordance with CENELEC standards ABB BA Transformers - 11 -
Special Technical Features III Magnetic core Mitered full length yoke Step-lap Low no-load losses Low no-load current Low noise level ABB BA Transformers - 12 -
Special Technical Features IV High voltage winding ABB BA Transformers - 13 - Aluminium foil Encapsulated cast resin Free of partial discharges High series capacitance Good impulse strength level High voltage endurance HV coil reinforced with fibreglass net
Special Technical Features (HV winding) I HV Coil reinforced with fiberglass net HV Coil reinforced with fiberglass net Fiberglass net, rigid type Fiberglass net, flexible type ABB BA Transformers - 14 - Mechanical properties improved Superiority to withstand short circuit stresses
Special Technical Features (HV winding) II ABB Foil Disk winding Top yoke The connection between two consecutive foil disk is is made as as pictures shows 1110 950 10 ABB BA Transformers - 15 - Bottom yoke Al-sheet Turn insulation Al-foil
Special Technical Features (HV winding) III ABB Foil Disk winding In In a foil disk winding design, the safety insulating space between critical turns is is easier to to guarantee than in in another winding design. Insulating Space ABB BA Transformers - 16 -
Special Technical Features I Low voltage winding Aluminium full width Open wound Prepreg foil between turns High short circuit strength Dump resistant Cooling ducts ABB BA Transformers - 17 -
Special Technical Features II Short Circuit Strength Full length foil in Low Voltage windings: Axial component forces during SC are minimised Prepreg insulation between turns in Low Voltage winding : improved resistance to compression due to radial component forces during SC ABB BA Transformers - 18 -
Special Technical Features III Tap changer The high voltage winding is provided with taps to modify the rated voltage. The standard number of taps is 5 with a tapping range of ± 5%. Tap changing is carried out by means of removable links ABB BA Transformers - 19 -
23/12/99 28/12/99 29/12/99 Special Technical Features IV Partial discharges Measured since 1983 100% transformers as a routine test Admissible values CENELEC HD-464 20 pc IEC 60076-11 (DRAFT 10pC) ABB average 5 pc pc 12 11 10 9 8 7 6 5 4 3 2 1 0 ABB TRAFO, S.A. MEASURED PD - 4th TERM '99 1/10/99 5/10/99 8/10/99 14/10/99 19/10/99 22/10/99 26/10/99 28/10/99 3/11/99 8/11/99 10/11/99 12/11/99 16/11/99 18/11/99 20/11/99 23/11/99 25/11/99 26/11/99 30/11/99 2/12/99 4/12/99 10/12/99 14/12/99 15/12/99 17/12/99 21/12/99 ABB BA Transformers - 20 -
Special Technical Features V Low dielectric ageing Phase voltage uniformly distributed along the winding height Operation voltages lower than one tenth of corona inception voltage ABB BA Transformers - 21 -
Dry Type Vacuum Cast Coil Transformer Accessories ABB BA Transformers - 22 -
Standard accessories I ABB BA Transformers - 23 -
Standard accessories II T-119 temperature control device ABB BA Transformers - 24 - Indicator led PTC sensors Three input lines PTC/L1 for the alarm PTC/L2 for the trip PTC/Fan to activate fans Programmable fan time functions
Standard accessories III T-154 temperature control device and relay Digital display Pt100 sensors (one per phase for all functions) Other programmable functions ABB BA Transformers - 25 -
Special Accessories IV Enclosures Available standard types: IP 21 IP 23 IP 31 IP 33 and other types requested ABB BA Transformers - 26 -
Special Accessories V Set of fans for forced air cooling: Transformer capacity can be increased up to 140% ABB BA Transformers - 27 -
Special Accessories VI Earthing switch Earthing switch ABB BA Transformers - 28 -
Special Accessories VII Space heaters Antivibration Pads ABB BA Transformers - 29 -
Special Accessories VIII Surge arrester Cable Box IP55 LV & HV Cables boxes ABB BA Transformers - 30 -
Special Accessories IX IP44 AFWF IP44 AFWF ABB BA Transformers - 31 -
Special Accessories X On - load tap changer (OLTC) ABB BA Transformers - 32 -
Dry Type Vacuum Cast Coil Transformer Options ABB BA Transformers - 33 -
Customising I Low voltage terminals located at the bottom of transformer ABB BA Transformers - 34 -
Customising II Impregnated HV winding ABB BA Transformers - 35 -
Customising III Delta connection encapsulated Plug-in connector ABB BA Transformers - 36 -
Customising IV ABB BA Transformers - 37 - Dual primary/ secondary Insulation class up to 52kV 6 pulse rectifying transformer 12 pulses rectifying transformer (3 windings) HV/LV conductor in copper Electrostatic screen Encapsulated LV Current transformers
ABB BA Transformers - 38 -