Cast Coil Transformers

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Eleanore Atkins
7 years ago
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1 Motors Automation Energy Transmission & Distribution Coatings USA Cast Coil

2 Simple... WEG WILL Make it easy to do business Handle complex specifications Manage the complete project Provide short cycle deliveries Manufacture the most reliable transformer Provide support during the entire life of your transformer At WEG, we are experts in building power transformers and electric machines and have been doing it for over 50 years. We manufacture a reliable transformer that is custom built to your specification. Find out how easy it is to work with WEG. Call WEG-WILL or send an to WEGWILL@weg.net Transformers n Autotransformers n Arc Furnace n Rectifiers n Unit Substation n Cast Coil n Field Service n Logistics n Project Management ASK-4WEG

3 Over the last half century, WEG has positioned itself as an industry leading supplier of electric motors, automation products, power transformers, and substation equipment. Now, WEG is doing it again by releasing their latest product in the transformers line: WEG cast coil transformers. Why choose WEG? Because WEG WILL! Demand for electricity has increased dramatically over the years. WEG cast coil transformers are designed to work under harsh operating conditions while reducing installation and maintenance costs. The cast resin design allows for higher short circuit strength and overload capacity. WEG cast coil transformers are designed for commercial and industrial applications such as oil & gas plants, pulp & paper mills, industrial operations, wind farms, hospitals, airports, and business centers. Ratings are available through 3,000 kva and 34.5 kv with thermal insulation ratings through class C (220 C). Features WEG cast coil transformers are safe, environmentally friendly transformers. Key features include: Flawless operation under harsh environmental conditions Fire safe (no insulating mineral oil) Reduced installation costs no fire protection or oil containment required No risk of contaminant leakage or toxic gas emissions High resistance to short circuits and high capacity to support overload Lower partial discharges and higher safety rating Transformer Construction Core The transformer core is manufactured with grain-oriented magnetic steel, with high magnetic permeability, low losses, and insulated on both sides by a thin layer of organic material (carlyte). The cutting and assembly is performed at 45 angles using the step lap method to reduce losses, excitation current, and magnetic noise. Low Voltage Coils The low voltage coils are made with copper or aluminum foil with a thermal insulation system designed per operating conditions F, H, or C. The coils are pre-impregnated with epoxy resin, an excellent adhesive, which provides an optimum coil insulation and high mechanical strength. Winding leads are mechanically anchored, making them practical, compact and easily accessed for field maintenance. High Voltage Coils High voltage coils display excellent resistance to load variations, changes in temperature, corrosive substances and fire. Windings are made of laminated foils and have a low partial discharge level and provide excellent resistance to axial forces caused by short circuits. High voltage regulation is performed by switching external jumpers easily accessible on the back of the coils. Insulated copper or aluminum bars are used to connect coils. 3

4 Cast coil transformers are certified with C2, E2, or F1 ratings. Ratings depend on the transformer installation conditions. C2 transformers are suitable for operating temperatures as low as -25 C E2 transformers are suitable for operation in high levels of humidity (up to 95%) F1 transformers are suitable for operation in highly flammable areas. In the event of a failure, F1 transformers extinguish coil fires after the feed circuit has been opened. Thermal table types used in insulation epoxy coil casts transfromers Thermal Types Insulation Temperature ( C) F 155 H 180 C 220 WEG manufactures cast coil transformers with the following power ratings and insulation classes: 500, 750, 1000, 1500, 2000, 2500, 3000 kva in voltage classes 5, 15, 25 & 34.5 kv 60Hz. WEG cast coil transformers meet all applicable international standards such as: IEEE-C ANSI-C89.2 IEC IEC UL 1562 WEG cast coil transformers are suitable for installation in a wide variety of applications; including: Wind farms applications Buildings and skyscrapers Public convention halls Shopping centers Stadiums Hospitals and health care centers Subways Food and Beverage industries Petrochemical applications Data centers Sewage plants and pump stations Ships Housing complexes For transformers greater than 3000 kva and < 10MVA, please contact your sales representative for additional information. Standard connections: Delta-Wye, Wye-Wye, Delta-Delta. Additional connection arrangements available upon request ASK-4WEG

5 Testing Testing standards: IEEE/ANSI NEMA IEC Additional manufacturing and testing standards are available. Contact WEG for details. Routine tests: Winding resistance Ratio, polarity, angular displacement and phase sequence No load losses and excitation current Load losses and impedance Dielectric tests (applied and induced voltage, insulation resistance) Partial discharge 5

6 Table of Dimensions & Weights of WEG Insulation class F Aluminum-Aluminum coils WEG Power Impedance Noise Length (mm) Width (mm) Height (mm) Dist. (mm) Total Weight (kg) kva Z(%) [db] NEMA 1 NEMA 1 NEMA 1 WHEELS NEMA All dimensions ± 3% tolerance 2. 0ptional additional wheels increase transformer height by 150mm, class 15 kv - 60 Hz, insulation class F Contact WEG for other insulations classes. 1. Maximum ambient temperature of 40 C (daily average of 30 C) 2. Mid-temperature rise/hot spot of the windings on the environment 90 C 110 C 3. Routine tests performed according to IEEE/ANSI standards Power Guarantees for Transformer Class 15kV Voltage kva H.V. L.V V V V V V Taps No Load Loss Guaranteed for 15kV Transformers Load Loss Z% io(%) 220 ± 2.5% ± 2.5% ± 2.5% ± 2.5% ± 2.5% ± 2.5% ± 2.5% ± 2.5% ± 2.5% ± 2.5% ASK-4WEG

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8 WEG Electric Corp. offers the following products, and more! With a full range of IEC/NEMA Global Certifications and a full line of products, WEG can supply the right solution for your needs anywhere in the world. To learn more about WEG s products and solutions or to locate a Distributor near you, please call ASK-4WEG or visit Low Voltage Motors, Single and 3-Phase, 1/8 700HP General Purpose Motors Explosion Proof Motors Crusher Duty Motors IEC Tru-Metric Motors Pump Motors including JP/JM P-Base Pump Motors Oil Well Pumping Motors Pool & Spa Motors Brake Motors Compressor Duty Motors Farm Duty Motors Poultry Fan Motors Auger Drive Motors IEEE 841 Motors Stainless Steel Wash Down Motors Saw Arbor Motors Cooling Tower Motors Commercial HVAC Motors Pad Mounted Motors Vector Duty Motors Large Electric Motors Low Voltage 3-phase motors up to 2,500HP Motors up to 70,000HP and 13,200V Wound Rotor Systems (including starters) up to 70,000HP and 13,200V Synchronous Motors up to 70,000HP and 13,200V Explosion proof motors (Ex-d) up to 1,500kW and 11kV Ex-n, Ex-e, Ex-p motors Variable Frequency Drives Low Voltage 1/4 to 2500HP, 230V 480V Medium Voltage HP Multi-pump systems NEMA 4X Dynamic braking resistors Line and load reactors Plug and play technology Network communications: Profibus-DP, DeviceNet, Modbus-RTU PLC functions integrated Complete line of options and accessories Soft Starters HP Oriented start-up Built-in bypass contactor Universal source voltage ( V, 50/60Hz) Network communications: Profibus-DP, DeviceNet, Modbus-RTU Complete Line of options and accessories MV Soft-starter 3.3kV, 4.16kV: up to 3500HP, Withdrawable Power Stacks, & 8x PT100 Temperature monitoring Controls Mini Contactors IEC Contactors Thermal Overload Relays Manual Motor Protectors Molded Case Circuit Breakers Smart Relays Enclosed Starters: combination & noncombination, Custom Panels Custom configured to your specification. NEMA 1, 12, 3R, 4 and 4X cabinets Quick delivery of preconfigured drives and soft starters UL 508 certified Low Voltage ( ) Made in the U.S.A. Generators Brushless Synchronous Generators for diesel gen-sets up to 4,200kVA Hydro-generators up to 25,000kVA Turbo-generators up to 62,500kVA Power Transformers Built and engineered in North America Voltages < 345kV Ratings 5-250MVA Station class, oil filled, round core, copper windings Special configurations and designs available! Ask your WEG Sales Representative for details. Designed, built, and engineered to ANSI standards. Custom Solution Package Sales WEG can package any of its products for ease of sale! Enjoy a single point of contact for the entire package of products and assistance from quote through after-sales support. Ask your WEG Sales Representative for details. Pushbuttons & Pilot Lights Timing & Motor Protection Relays Terminal Blocks Please contact your authorized distributor: USA CAST COIL (2013) WEG Electric Corp Sugarloaf Parkway Duluth, GA Phone: ASK-4WEG web:

Presentation of the France Transfo factories

Presentation of the France Transfo factories France Transfo's internationally recognised and highly esteemed expertise is today exported to more than 80 countries throughout the world. Over the past 15