2012.1 Transformer oil coolers BETA & CETA
Transformer oil coolers BETA & CETA Luvata is pleased to present to the market its renewed transformer oil coolers. The BETA and CETA series of transformer oil coolers have been improved in accordance with the new ErP 2013 directive and following the EN 5021. General Features A new type of motor has been installed in the fan section, offering significant improvement in noise level and power consumption, but also cooling capacity. The new integrated fan-motor features external rotor technology for faster and easier maintenance. The BETA and CETA transformer oil coolers are delivered as fully factory-assembled units. The difference between the two coolers is their size - CETA is larger than BETA. Each cooler consists of a casing with a finned tube heat exchanger, with one or up to four fan units. If the cooler has more than one fan, the fans are separated by partition walls. This enables better power regulation, by switching on or off one fan at a time depending on the unique cooling needs. The cooler is designed to withstand vibrations, shocks, seismic forces and thermal movements. Technical data BETA & CETA Max. working pressure: 0.35 MPa Test pressure: 0.50 MPa Max. working temperature: 100 C Min. working temperature: -20 C Impeller blade designed for low sound. Cooler with four fan units and vertical installation for horizontal air flow. 02 WWW.LUVATA.COM
Tubeplate with smoothly rolled-in tubes. Fan unit with lockable safety switch. The new integrated fan-motor features external rotor technology with higher efficiency and lower sound. The Luvata transformer oil cooler concept, type Oil Forced Air Forced (OFAF), offers many benefits including: Pre-designed with simple ordering product code Two types BETA & CETA Different sizes within each cooler type Wide capacity range High cooling capacity and compact design Low sound level - different fan speeds Low energy consumption Two different connections within one motor: Delta and Star Horizontal or vertical installation design Thoroughly cleaned inside by oil flushing Different materials available Computer program available for correct sizing Finned heat exchanger The finned heat exchanger includes bolted headers made of anti-corrosion coated steel. The rubber o-rings arranged between the headers and the tube plates provide an effective seal. The finned coil body is standard made of aluminium, making it highly corrosion resistant. The continuous arrangement of the coil fins and the wide fin pitch provide good resistance against clogging. Plugged vent and drain connections are provided on each header. Fan unit The fan unit has a direct-driven axial fan. The impeller blades and hub are made of aluminium. The impeller is balanced according to ISO-1940/1. The fan is driven by a totally enclosed, three-phase, induction motor with protection class IP55 and F-insulation. The motor is delivered with plugged drain holes. This new fan-motor design provides the external rotor solution as standard. The fans are also available in different speeds, depending on the sound requirements. Safety switch Each motor is cabled to a lockable safety switch. The switch has a normally open auxiliary contact. Casing The casing of the heat exchanger is made of hot-dip galvanized steel. The fan deck is made of Aluzinc steel sheet and the fan cone is made of painted pre-galvanized steel. If required it can be painted for esthetical reasons or increased corrosion protection. The casing is provided with lifting lugs as well as brackets, in order to fit the cooler to the transformer. The fan protection guard, fixed with the fan, can easily be removed for inspection or when replacement of the fan or motor is required. WWW.LUVATA.COM 03
Packing & Electric cabling Coolers ready for shipment. The connection box is made of stainless steel. Packing The transformer coolers are delivered bolted to a wooden pallet, but separate wooden boxes or alternative packing options are also available upon request. A protective plastic wrapping covers the fan unit. The oil connections of the heat exchanger are covered. Cleanliness Before delivery each cooler is carefully cleaned inside by flushing with transformer oil, with an on-line particle counter to ensure it meets the requirements for cleanliness for power transformer applications in accordance with ISO 440, 10/7. The oil connections are sealed off and tightened for shipment. Cabling and connection box For easier electric power supply connection, the fan motors are cabled from each safety switch to one common connection box. The connection box is made of stainless steel equipped with terminals and has a venting membrane. Each motor is equipped with a thermal contact that can be cabled to the common connection box (on request). The standard cable type is BETAflam 145flex and the terminal blocks are supplied by Phoenix. Extra cable with terminal blocks for connection of an oil circulation pump motor can be provided (on request). Transformer oil circulation pump type VMOA can be supplied by Luvata Söderköping AB. The pump has an integrated motor and is highly efficient, cooled and lubricated by the transformer oil, robust, reliable and maintenance free. The sound level is also low. The pump can be supplied in two different sizes and with varying flow rates. Oil pump type VMOA. 04 WWW.LUVATA.COM
Materials, Outline dimensions & Options Standard Materials: Outline dimensions: subject to change without prior notice. 1 15 14 13 12 One fan F 11 G 10 9 8 7 Two fans A E 1 2 3 4 5 1. Tubes Aluminium 2. Fins Aluminium 3. Tube plate Aluminium 4. O-ring gasket NBR 70º 5. Header Steel, coated with RILSAN (polyamide 11), colour RAL 7001. Flange connection EN 1092-1 type 11 PN1 or ANSI B1.5 150 Lb 7. Washer Copper 8. Drain/venting plug M1, stainless steel 9. Cellular rubber gasket EPDM 10. Fan deck Aluzinc coated steel sheet 11. Casing & framework Hot-dip galvanized steel acc. to EN ISO 141 12. Fan casing Painted galvanized steel, colour RAL 900 13. Impeller blade/hub Painted aluminium 14. Safety switch Plastic housing IP 5/IEC 947-3 15. Electric motor Cast Aluminium, IP 55/IEC 34-1 with plugged drain holes 1. Fan guard Painted galvanized steel B Three fans C Four fans D Cooler A B C D E F G BETA 142 2842 4042 5242 1472 800 ~790 CETA 1842 3242 442 042 1872 1000 ~850/1040* All dimensions in mm. * Integrated fan unit solution. Options and accessories We offer a wide range of standard and special design solutions: Fan motors for other power supply voltage Increased corrosion protection for different environmental conditions, acc. to category C4 or C5 Painting of cooler for increased corrosion protection or color matching With or without cabling of fan motors to terminal box, and with or without additional power supply cable to pump With or without turbulator inserts into the heat exchanger tubes for increased efficiency Fin surface protection grid, mounted on cooler air intake side Different packing depending on mode of shipment Computer selection program COILS The BETA and CETA transformer oil coolers are available in a wide range of configurations. Luvata s computer program COILS is used to select and size the correct cooler. The program generates a print-out of technical data and a dimensional drawing of the selected cooler. Some variables to be considered while sizing and selecting include: Cooling capacity Oil flow rate & temperatures Fan motor power supply Ambient temperature Environmental conditions Sound level (fan speed) Cooler size Number of fans Number of tube rows Number of oil passes With or without turbulators Mounting alternative Contact us and we can supply you with the program or help you in selecting the optimal cooler. WWW.LUVATA.COM 05
Motor data & Sound data The tables below show motor data and sound data for both cooler types. Specified motor data is for one fan motor only and for standard motors. Special motors can be delivered upon request. The label on the motor shows the power consumption and absorption that is refered to the max operating temperature. Motor data BETA 50 Hz Motor data CETA 50 Hz Hz No. of poles motor speed (rpm) Voltage (V) Max. rated input power* (kw) Max. Starting cos Hz No. of poles motor speed (rpm) Voltage (V) Max. rated input power* (kw) Max. Starting cos 50 8 12 80 20 50 470 430 320 400 400 Y 400 400 Y 400 400 Y 2,10 1,15 0,93 0,51 0,37 0,21 4,10 2,20 2,30 1,10 0,93 0,42 4,51 2,42 2,53 1,21 1,02 0,4 11,0 3,7,0 2,0 1,5 0,2 0,8 0,0 0,42 ** 90 400 4,80 10,34 11,37 9,0 0,8 50 870 400 3,10 5,50,05 22,0 0,8 0 400 Y 1,95 3,40 3,74 7,0 8 90 570 400 400 Y 1,55 1,15 3,30 2,00 3,3 2,20 14,0 4,4 0,0 0 Hz 0 Hz Hz No. of poles motor speed (rpm) Voltage (V) Max. rated input power* (kw) Max. Starting cos Hz No. of poles Voltage motor speed (V) (rpm) Max. rated input power* (kw) Max. Starting cos 50 0 8 12 880 590 730 490 490 320 40 40 Y 40 40 Y 40 40 Y 2,50 1,15 1,40 0, 0,54 0,2 4,20 1,90 2,80 1,25 1,05 0,49 4,2 2,09 3,08 1,38 1,1 0,54 *) consumed power at motor surrounding temperature 30 degree C. 9,5 3,2,0 2,0 1,5 0,5 0,75 0,2 0,4 cos ** 110 40,05 10,40 11,44 9,0 0,78 50 0 870 40 4,10,50 7,15 17,0 0,75 0 40 Y 2,20 2,20 2,42 5,5 8 710 520 40 40 Y 1,90 1,05 5,70 3,30,27 3,3 *) consumed power at motor surrounding temperature 30 degree C. **) High capacity version. 15,0 5,0 0,2 Sound data BETA Sound data CETA Sound power level, L w, db, per one cooler according to ISO 3744. Sound power level, L w, db, per one cooler according to ISO 3744. Frequency 50 50 Hz Hz 0 0 Hz Hz Frequency 50 50 Hz Hz 0 Hz 0 Hz No. of poles 8 8 12 12 8 8 12 12 Y Y Y Y Y Y No. of fans 1 81 74 72 8 3 58 81 74 75 7 8 0 2 84 77 75 71 1 84 77 78 70 71 3 3 8 79 77 73 8 3 8 79 80 72 73 5 4 87 80 78 74 9 4 87 80 81 73 74 The tolerance of the sound power levels are +/- 1,5 db depending on individual differences. No. of poles ** 8 8 * 8 8 Y Y Y Y No. of fans 1 95 87 80 80 7 98 92 79 85 73 2 98 90 83 83 80 101 95 82 88 7 3 100 92 85 85 82 103 97 84 90 78 4 101 93 8 8 83 104 98 85 91 79 The tolerance of the sound power levels are +/- 1,5 db depending on individual differences. Sound pressure level, L p, db, at distance 2 m, per one cooler according to EN 007. Sound pressure level, L p, db, at distance 2 m, per one cooler according to EN 007. Frequency 50 50 Hz Hz 0 0 Hz Hz Frequency 50 50 Hz Hz 0 Hz 0 Hz No. of poles 8 8 12 12 8 8 12 12 No. of poles ** 8 8 * 8 8 Y Y Y Y Y Y Y Y Y Y No. of fans 1 5 58 5 52 47 42 5 59 58 51 52 44 No. of fans 1 78 70 3 3 59 81 75 2 8 5 2 8 1 59 55 50 45 8 1 2 54 55 47 3 70 3 1 57 52 47 70 3 4 5 57 49 4 71 4 2 58 53 48 71 4 5 57 58 50 The tolerance of the sound pressure levels are +/- 3 db depending on individual differences. 2 81 73 3 84 78 5 71 59 3 83 75 8 8 5 8 80 7 73 1 4 84 7 9 9 88 81 8 74 2 The tolerance of the sound pressure levels are +/- 3 db depending on individual differences. ** High capacity version. 0 WWW.LUVATA.COM
Product code key & installation mounting arrangements CODE KEY Installation mounting arrangements BETA aa-b-c-d-eee-f-gg-hh CETA aa-b-c-d-eee-f-gg-hh aa = a1 = Number of fans: 1, 2, 3 or 4 a2 = Number of tube rows: 3, 4, 5 or b = Number of oil passes: 1, 2, 3 or 4 c = Turbulator inserts: 0= without spiral inserts, 4= with spirals inserts d = Oil connection flange size: 1 = DN 80 EN 1092-1 type 11 PN1 2 = DN 100 EN 1092-1 type 11 PN1 3 = DN 125 EN 1092-1 type 11 PN1 4 = DN 150 EN 1092-1 type 11 PN1 5 = 3 ANSI B1.5 150Lb = 4 ANSI B1.5 150Lb 7 = 5 ANSI B1.5 150Lb 8 = ANSI B1.5 150Lb 9 = DN 100, flat square flange with M1 bolts eee = Motor data (voltage, frequency and number of poles): 5D = 400 V, 50 Hz, -poles, D conn. 5Y = 400 V, 50 Hz, -poles, Y conn. 58D = 400 V, 50 Hz, 8-poles, D conn. 58Y = 400 V, 50 Hz, 8-poles, Y conn. 52D = 400 V, 50 Hz, 12-poles, D conn. 52Y = 400 V, 50 Hz, 12-poles, Y conn. D = 40 V, 0 Hz, -poles, D conn. Y = 40 V, 0 Hz, -poles, Y conn. 8D = 40 V, 0 Hz, 8-poles, D conn. 8Y = 40 V, 0 Hz, 8-poles, Y conn. 2D = 40 V, 0 Hz, 12-poles, D conn. 2Y = 40 V, 0 Hz, 12-poles, Y conn. f = Tube material, tube plates and fins: 1= Aluminium - Aluminium - Aluminium 2= Copper - Brass - Aluminium 3= Copper - Brass - Copper 4= Aluminium - Aluminium - AlMg gg = Mounting arrangement: g1= 1= standard connection, 2= mirrored connections g2= see alternatives to the right. hh = Internal design code Arrangement 14 Arrangement 11 Arrangement 12 Arrangement 13 Arrangement 1 Arrangement 15 WWW.LUVATA.COM 07
About Luvata Luvata is a world leader in metal solutions manufacturing and related engineering services. Luvata s solutions are used in industries such as renewable energy, power generation, automotive, medicine, air-conditioning, industrial refrigeration, and consumer products. The company s continued success is attributed to its longevity, technological excellence and strategy of building partnerships beyond metals. Employing over,400 staff in 13 countries, Luvata works in partnership with customers such as Siemens, Toyota, CERN and DWD International. Luvata Söderköping AB Söderköping, Sweden Ph +4 121 191 00 Gent, Belgium Ph +32 9 218 71 30 Vienna, Austria Ph +43 1 81 20 20 Montreal, Canada Ph +1 450 714 0901 Pocenia, Italy Ph +39 0432 772 001 www.luvata.com Copyright 2012 Luvata Luvata Söderköping AB. 12-03. Subject to alteration.