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Operating Instructions – Explosion-Proof AC Motors DR63/eDR63, DVE250/280

Accessory equipment

Motor Structure

3.3

Accessory equipment

3.3.1

AC motor series

The following table shows the types of AC motors:

3.3.2

Mechanical attachments

The following table shows possible mechanical additions:

3.3.3

Temperature sensor / temperature detection

The following table shows the thermal protection options:

3.3.4

Connection

The following table shows the connection variants:

3.3.5

Ventilation

The following table shows possible ventilation variants:

Designation

Category

eDR.., DR..

/2G, /2GD,

/3D, /3GD

ATEX motor

DVE..

ATEX energy-efficient motor, High Efficiency IE2

63, 250, 280

Motor sizes

S – L

Lengths:

S = short / M = medium / L = long

LC = Rotors with copper cage

4, 6

Number of poles

Designation

Category

Option

/RS

/3GD

Backstop (line-powered only)

Designation

Category

Option

/TF

/2G, /2GD,

/3D, /3GD

Temperature sensor (PTC resistor)

/KY

One KTY84 – 130 sensor

Designation

Category

Included in the scope of delivery

/2G, /2GD,

/3D, /3GD

Cage clamp (DT14): eDR63, DR63

Terminal board (DT13): DVE250/280

Designation

Category

Option

/VE

/3D, /3GD

Forced cooling fan for motors according to 94/9/EC, category 3
(gas / dust): DVE250/280

/AL

/2G, /2GD,

/3D, /3GD

Metal fan: eDR63, DR63

Protection canopy for the fan guard

Содержание DR63 Series

Страница 1: ...Drive Technology Drive Automation System Integration Services Addendum to the Operating Instructions Explosion Proof AC Motors DR63 eDR63 DVE250 DVE280 Edition 11 2012 19494815 EN ...

Страница 2: ...SEW EURODRIVE Driving the world ...

Страница 3: ...sic structure of the motors 11 3 2 Nameplate type designation 13 3 3 Accessory equipment 14 4 Mechanical Installation 16 4 1 Before you start 16 4 2 Extended storage of motors 17 4 3 Motor installation notes 18 4 4 Installation tolerances 20 4 5 Assembling the input elements 20 4 6 Turning the terminal box 20 4 7 Painting 22 5 Electrical Installation 23 5 1 Additional regulations 23 5 2 Wiring dia...

Страница 4: ...r category 3 motors 43 7 4 Changing the blocking direction for motors with backstop 45 8 Inspection Maintenance 47 8 1 Inspection and maintenance intervals 48 8 2 Change the adapter plate 49 8 3 Greasing the backstop 49 8 4 Mounting a VE forced cooling fan 50 9 Technical Data 51 9 1 Maximum permitted overhung loads 51 9 2 Permitted ball bearing types 52 9 3 Tightening torques 52 10 Malfunctions 53...

Страница 5: ... and Explosion Proof AC Motors EDR 71 225 1 2 Structure of the safety notes 1 2 1 Meaning of the signal words The following table shows the grading and meaning of the signal words for safety notes notes on potential risks of damage to property and other notes 1 2 2 Structure of the section related safety notes Section related safety notes do not apply to a specific action but to several actions pe...

Страница 6: ...the documen tation before you start working with the unit 1 4 Exclusion of liability Compliance with the information contained in the documentation is essential to ensure safe operation of the explosion proof AC motors DR63 eDR63 and DVE250 280and to achieve the specified product characteristics and performance requirements SEW EURODRIVE assumes no liability for injury to persons or damage to equi...

Страница 7: ...2 2 General information This documentation provides additional information WARNING Danger of fatal injury or risk of injury during the operation of motors or gearmotors caused by live bare in the event of open connectors terminal boxes and movable or rotating parts Risk of burns caused by hot surfaces Severe or fatal injuries All work related to transport storage installation assembly connection s...

Страница 8: ...ly be carried out by persons who are trained appropriately All qualified personnel must wear appropriate protective clothing 2 4 Designated use The explosion proof electric motors are intended for industrial systems When installed in machines startup of the motors i e start of designated operation is prohibited until it is determined that the machine meets the requirements stipulated in EC Directi...

Страница 9: ...is standard If the gearmotor is equipped with two eyebolts then both should be used for transportation In this case the tension force vector of the slings must not exceed a 45 angle according to DIN 580 Use suitable sufficiently rated handling equipment if required Reattach these in the case of further transportation Store the motor gearmotor in a dry dust free environment if it is not to be insta...

Страница 10: ...the wiring diagram in the terminal box The connection should be a continuous secure electrical connection no protruding wire ends use the cable end equipment intended for this purpose Establish a secure pro tective earth connection When the motor is connected the distances between live and conductive parts must not be shorter than the minimum values according to DIN EN IEC 60079 7 and 15 and natio...

Страница 11: ...16 Hex nut 7 Flanged endshield 41 Shim 116 Terminal clip 230 Hex nut 9 Screw plug 42 B side endshield 117 Hex head screw 572 Gasket 10 Retaining ring 44 Grooved ball bearing 118 Lock washer 823 Lock washer 11 Grooved ball bearing 100 Hex nut 123 Hex head screw 829 Screw 12 Retaining ring 101 Lock washer 126 Terminal clip 13 Cap screw 103 Stud 129 Screw plug 16 Stator 104 Supporting ring 131 Gasket...

Страница 12: ...g terminal 3 Key 36 Fan 129 Screw plug 7 Flanged endshield 42 B side endshield 134 Screw plug 9 Screw plug 44 Grooved ball bearing 160 Gasket 11 Grooved ball bearing 105 Spring washer 262 Terminal 16 Stator complete 108 Nameplate 615 Terminal 30 Oil seal 111 Gasket 616 Terminal 32 Retaining ring 127 Grounding terminal 1213 Terminal board complete 44 35 30 32 36 16 9 1 7 105 11 108 3 42 131 134 129...

Страница 13: ...or when it includes the relevant components 6306 2Z J C3 6205 2Z J C3 EDRE90M4 2GD 0102 82 5 01 1151928301 0001 11 PTB 10 ATEX 1234 01 50 1430 220 240 380 420Y 6 9 16 0 77 3 48 1 5 PTB 10 ATEX 1234 02 86 4 II2G Ex e IICT3 Gb II2D Ex tb IIIC T120 C Db Kundenartikel Nr 13A47B911 B3 65 155 F 19 20 40 130 B 2011 e DR63 M 4 2GD TF Motor protection option TF temperature sensor Temperature detection KY C...

Страница 14: ...ventilation variants Designation Category eDR DR 2G 2GD 3D 3GD ATEX motor DVE ATEX energy efficient motor High Efficiency IE2 63 250 280 Motor sizes S L Lengths S short M medium L long LC Rotors with copper cage 4 6 Number of poles Designation Category Option RS 3GD Backstop line powered only Designation Category Option TF 2G 2GD 3D 3GD Temperature sensor PTC resistor KY One KTY84 130 sensor Desig...

Страница 15: ...3 7 Other additional features The following table shows an additional feature Designation Option II2G Motors according to Directive 94 9 EC category 2 gas II2GD Motors according to Directive 94 9 EC category 2 gas dust II3D Motors according to Directive 94 9 EC category 3 dust II3GD Motors according to Directive 94 9 EC category 3 gas dust Designation Category Option 2W 2G 2GD 3D 3GD Second shaft ...

Страница 16: ...structions Any differing specifications on the nameplate must be observed The ambient conditions must comply with all the specifications on the nameplate No oils acids gases vapors dusts radiations etc Max installation altitude 1000 m above sea level Observe chapter Electrical Installation Ambient conditions during operation Installation altitude Note the restrictions for encoders Special design T...

Страница 17: ...e Check whether the motor has absorbed moisture as a result of being stored for a long time Measure the insulation resistance for this purpose measuring voltage 500 V The insulation resistance see following figure varies greatly depending on the temperature The motor must be dried if the insulation resistance is not adequate 4 2 1 Drying the motor Heat the motor with warm air or using an isolation...

Страница 18: ... Do not allow the solvent to pene trate the bearings or shaft seals this could damage the material Mount the gearmotor only on a level vibration free and torsionally rigid support struc ture Make sure the customer s counter bearing is unobstructed and can move freely Align the motor and the driven machine carefully in order to prevent the output shaft from being exposed to unacceptable strain Obse...

Страница 19: ...ing surfaces of the terminal box and the terminal box cover prior to reassembly Replace any brittle seals If required touch up the corrosion protection especially at the eyebolts Check the degree of protection Protect the shaft against corrosion using a suitable anti corrosion agent Motor type h in mm eDR63 DR63 15 DVE250 40 DVE280 h INFORMATION If using belt pulleys Only use belts that do not bui...

Страница 20: ...ng the terminal box 4 6 1 Terminal box with terminal board and anti twist frame The following figure shows a terminal box with anti twist frame Shaft end Flanges Diameter tolerance according to EN 50347 ISO j6 with Ø 28 mm ISO k6 with Ø 38 mm up to 48 mm ISO m6 at Ø 55 mm Center bore in accordance with DIN 332 shape DR Centering shoulder tolerance in accordance with EN 50347 ISO j6 with Ø 250 mm I...

Страница 21: ... bottom part of the terminal box with the screws 119 and the lock washers with one of the following tightening torques EDR 71 132 5 Nm 44 3 lb in EDR 160 225 25 5 Nm 225 7 lb in 9 Re connect any removed cables according to the following table Tighten the nuts on the connection bolts with the appropriate tightening torque 10 Fasten the terminal box cover with the screws 123 and lock washers using t...

Страница 22: ...l connection EDR 71 132 5 44 3 117 Hexagon screw grounding inside EDR 71 132 4 35 4 EDR 160 25 5 225 7 EDR 180 225 alumi num design 25 5 225 7 EDR 180 225 gray cast iron design 50 442 5 119 Pan head screw of terminal box EDR 71 132 5 44 3 EDR 160 225 25 5 225 7 123 Hexagon screw terminal box cover EDR 71 132 4 35 4 EDR 160 10 3 91 2 EDR 180 225 alumi num design 10 3 91 2 EDR 180 225 gray cast iron...

Страница 23: ...iagram is missing You can obtain the valid wiring diagrams free of charge from SEW EURODRIVE 5 3 Checking cross sections Check the cable cross sections based on the nominal motor current the valid installation regulations and the requirements where the unit is installed 5 4 Cable entries The terminal boxes have metric threaded holes according to EN 50262 or NPT threaded holes according to ANSI B1 ...

Страница 24: ...5 Equipotential bonding In accordance with EN 60079 14 and IEC 61241 14 it might be necessary to establish a connection to an equipotential bonding system Observe the chapter Electrical Instal lation Improving the grounding EMC 5 6 Wiring notes Adhere to the safety notes during installation 5 6 1 Protecting the motor protection devices against interference Adhere to the following points to protect...

Страница 25: ...MC For improved low impedance grounding at high frequencies we recommend using the following connections with DR DV E AC motors DVE250 and 280 M16 screw and 2 serrated lock washers in the bore of the eyebolt 5 9 Special aspects in switching operation When the motors are used in switching operation possible interference of the switch gear must be excluded by ensuring suitable wiring According to IE...

Страница 26: ...d as follows PH fH PN The current is calculated as follows IH fH IN 5 10 3 Hazardous radiation The motors must not be subjected to hazardous radiation such as ionizing radiation Consult SEW EURODRIVE if necessary 5 10 4 Harmful gas vapor and dust If used according to their designated use explosion proof motors are incapable of ignit ing explosive gases vapors or dusts However explosion proof motor...

Страница 27: ...Avoid protruding wire ends Observe the specified direction of rotation 5 12 Connecting category 2G and 2GD motors You can obtain the following wiring diagrams from SEW EURODRIVE by specifying the order number of the motor see chapter Nameplate in the corresponding detailed op erating instructions INFORMATION It is essential to comply with the valid wiring diagram Do not connect or start up the mot...

Страница 28: ... EURODRIVE by specifying the order number of the motor see chapter Nameplate in the corresponding detailed op erating instructions 5 13 1 Motor connection The motors are supplied and connected differently depending on the size and electrical design Comply with the connection type specified in the following table Observe the permitted air and creeping distances when connecting the supply system cab...

Страница 29: ...rotective con ductor connection so that the cable lug and housing material are separated by a washer Size 250 280 Terminal board Perform the connection in accordance with the enclosed wiring diagram Check cable cross section Arrange terminal links correctly Screw on the connections and the PE conductor correctly In the terminal box Check winding connections and tighten them if necessary connection...

Страница 30: ...cope of de livery The variants are explained in more detail on the following pages Arrangement of terminal links for connection Motor size DVE250 280 1 Terminal link 2 Terminal stud 3 Flange nut 4 Terminal board 5 Customer connection 6 Customer connection with split connection cable U 1 U 2 V 2 V 1 W 1 W 2 1 2 3 4 5 INFORMATION The terminal box must be free from foreign objects dirt and humidity U...

Страница 31: ...ertificate the certificate contains special conditions for safe use of the motors 1139608587 1 Hex nut 2 Washer 3 PE conductor with cable lug 4 Serrated lock washer 5 Stud 6 Terminal box 1 1 5 5 4 3 6 2 2 4 3 6 Motor category Area of operation 2G Use in zone 1 and compliance with the design requirements for equipment group II category 2G 2GD Use in zone 1 or 21 and compliance with the design requi...

Страница 32: ...ture For the surface temperature of the motor refer to the nameplate the declaration of con formity or the type examination certificate 5 14 5 Protection against impermissibly high surface temperatures Motors for hazardous locations ensure safe operation under normal operating condi tions The motor must be switched off securely in the case of overload to avoid the risk of impermissibly high surfac...

Страница 33: ...tch must be set to the rated motor current indicated on the nameplate With category 2G and 2GD the permitted nominal motor current is spec ified on the prototype test certificate 5 14 7 Protection exclusively with PTC temperature sensors TF The positive coefficient thermistor must be evaluated using a suitable device Observe the applicable installation regulations The PTC thermistors comply with D...

Страница 34: ...82 Resistance measurement measuring instrument with V 2 5 V or I 1 mA Standard measured values 20 500 Ω thermal resistance 4000 Ω When using the temperature sensor for thermal monitoring the evaluation function must be activated to maintain reliable isolation of the temperature sensor circuit If the tem perature reaches an excessive level a thermal protection function must be triggered im mediatel...

Страница 35: ...d cooling fans must not be used with explosion proof EDR AC motors 5 15 3 Anti condensation heating for motors in category II3D An anti condensation heating is required when the explosion proof motors are operated at temperatures below 20 C Anti condensation heating is optional for applications above 20 C where moisture con densation is expected When connecting the anti condensation heating observ...

Страница 36: ...conditions trips during the acceleration time This is usually the case when the acceleration time is 1 7 x tE time Motor protection switch and PTC thermistor temperature sensor TF S1 Heavy starting not possible1 DR63 DVE250 280 II3GD II3D Motor protection switch S1 Heavy starting not possible1 PTC thermistor TF S1 Heavy start1 Frequency inverter operation according to specifications with soft star...

Страница 37: ...nsures that the limit values are not exceeded Frequency inverters from third party manufacturers If the maximum permitted limit values cannot be met with frequency inverters from other manufacturers you must take limiting measures Consult the manufacturer of the fre quency inverter IT network In an IT system an insulation fault between a phase and ground is tolerated The ground connection of the m...

Страница 38: ... motor voltage is too low undercompensation slip increases which causes higher temperatures in the rotor of the motor If the mechanical load is the same operation on a frequency inverter causes a more significant motor temperature rise due to the harmonic content in current and voltage NOTES ON EXPLOSION PROTECTION The frequency inverter can only be operated with motors that are permitted for this...

Страница 39: ...ve shows the permitted maximum torque for continuous operation The values may be exceeded for brief periods if the effective operating point lies below the thermal limit characteristic curve The maximum dynamic limit torque of motors of category 3 must not exceed 200 of MN Permitted frequencies Observe the maximum frequencies listed in the assignment tables for the motor frequency inverter combina...

Страница 40: ...tors and AC brakemotors in connection Thermal limit characteristic curve for inverter operation of 4 pole AC motors and AC brakemotors in connection 1 104 Hz limit characteristic curve 2 87 Hz limit characteristic curve 1 60 Hz limit characteristic curve 2 50 Hz limit characteristic curve 1 2 0 00 0 20 0 40 0 60 0 80 1 00 1 20 0 400 800 1200 1600 2000 2400 2800 3200 3600 n 1 min M Mrated 0 00 0 20...

Страница 41: ...ditional frequency inverter nameplate EMC measures The following components are permitted for MOVIDRIVE and MOVITRAC frequency inverters Line filters of the NF series Output chokes of the HD series Output filter sine filter HF If an output filter is used the voltage drop at the filter must be taken into account Gear units When parameterizing FI controlled gearmotors you have to observe the nemax a...

Страница 42: ...is correct motor rotating clockwise U V W to L1 L2 L3 All protective covers have been properly installed All motor protection equipment is active and set for the rated motor current The self reengaging manual brake release is used for hoist drives There are no other sources of danger INFORMATION Only qualified personnel is allowed to start up and operate the motors ob serving the applicable accide...

Страница 43: ...d 2 The system configuration only allows for individual drives You can set either V f or vector controlled for the control mode For the application you can only select speed control and hoist application Do not use the options DC braking or Flying start function Always set the operating mode to 4 quadrant operation Select the proper motor series in the Motor type window In the Motor selection wind...

Страница 44: ...al drives You can set either V f or vector controlled for the control mode Select the proper motor series in the Motor type window In the SEW motor type 1 window choose the device category the nominal motor voltage the nominal motor frequency and the line voltage in addition to the motor For the application options you can only select speed control and the hoist func tion Do not use the options DC...

Страница 45: ...h backstop Startup 7 4 Changing the blocking direction for motors with backstop 7 4 1 Dimension x after installation 1 Fan guard 2 Fan 3 Cap screw 4 V ring 5 Felt ring 6 Retaining ring 7 Tapped hole 8 Driver 9 Sprags 10 Equalizing ring 6 10 7 1 2 4 3 5 8 9 X Motor Dimension x after instal lation DV E 250 280 13 5 mm 0 0 I ...

Страница 46: ...132M 160M remove the shims 10 4 Pull the driver 8 and sprags 9 completely off using the tapped holes 7 turn them by 180 and press them back on 5 Re fill the grease 6 Important Do not exert pressure on or hit the wedge element train risk of damaging the material 7 While pressing them back on shortly before the sprag penetrates the outer ring slowly turn the rotor shaft by hand in the direction of r...

Страница 47: ... Severe or fatal injuries Secure or lower hoist drives danger of falling Safeguard and or protect the driven machine against touching Before starting work disconnect the motor and if installed the forced cooling fan from the power supply safeguarding them against unintentional re start Only use genuine spare parts in accordance with the valid spare parts list CAUTION The surfaces on the drive can ...

Страница 48: ... enclosure Therefore always check that the seals are fitted correctly and in perfect condition when performing any work on the machine Explosion protection can only be ensured if motors are serviced and maintained properly If you repaint motors or gearmotors observe the requirements for preventing elec trostatic charging according to EN IEC 60079 0 see chapter Painting in the cor responding detail...

Страница 49: ...sing LOCTITE or a similar substance 8 3 Greasing the backstop The backstop is greased at the factory with the corrosion protection low viscosity grease Mobil LBZ If you want to use another grease make sure it complies with NLGI class 00 000 with a base oil viscosity of 42 mm2 s at 40 C on a lithium saponified and mineral oil base The application temperature range is 50 C to 90 C See the following ...

Страница 50: ...ng fan 1 Before installing the forced cooling fan 1 check to see that the fan wheel and the fan motor are not damaged 2 After installation turn the fan wheel to make sure that the fan wheel does not rub in any place The clearance between the fan wheel and fixed parts must be at least 1 mm 1 INFORMATION Observe the operating instructions of the forced cooling fan ...

Страница 51: ...W according to shaft strength is the permitted value for the overhung load at point x Note that the calculations apply to Ma max FxL based on bearing service life FxW based on shaft strength Mounting position rpm Number of poles Permitted overhung load FR N Permitted axial force FA N FA_tensile force FA_pressure Size 63 250 280 Foot mounted motor 1500 4 8000 2500 Flange mounted motor 1000 6 600 15...

Страница 52: ... Nmm DR63 eDR63 161 146 16 8 103 19 103 13 14 30 DVE250 658 588 630 103 0 65 140 DVE280 658 588 630 103 0 75 140 Motor type A side bearing AC motor B side bearing foot and flange mounted motors gearmotors Gearmotor Flange and foot mounted motor AC motor DR63 eDR63 6303 2RS J C3 6203 2RS J C3 6202 2RS J C3 DVE250 280M 6316 2RS J C3 6315 2RS J C3 Key num ber Screw Applies to Tightening torque in Nm ...

Страница 53: ...epair Cables connected incorrectly Correct the connection Ground fault on motor Send motor to specialist workshop for repair Severe speed loss under load Overload Measure the power use larger motor or reduce load if necessary Voltage drops Increase cross section of incoming cable Motor heats up excessively measure temperature Overload Measure the power use larger motor or reduce load if necessary ...

Страница 54: ... motor is operated with a frequency inverter Please refer to the frequency inverter oper ating instructions for the meaning of the problems that occur and to find information about rectifying the problems 10 3 Customer service 10 3 1 Customer service Have the following information available when you require the assistance of our customer service Nameplate information complete Type and extent of th...

Страница 55: ...0 280 55 11 Customer service Declarations of Conformity 11 Declarations of Conformity INFORMATION The EC prototype test certificate is provided with the drive The notified body as well as the technical details are listed in the provided EC prototype test certificate ...

Страница 56: ...Soder Place Date Managing Director Technology a b a Authorized representative for issuing this declaration on behalf of the manufacturer b Authorized representative for compiling the technical documents 6 852 5 9 PE R UQVW OLFNOH 6WUD H UXFKVDO GHFODUHV XQGHU VROH UHVSRQVLELOLW WKDW WKH PRWRUV RI WKH VHULHV H 5 H 5 FDWHJRU ODEHOLQJ H 7 E H 7 E WE 7 E DUH LQ FRQIRUPLW ZLWK 7 LUHFWLYH SSOLHG KDUPRQL...

Страница 57: ... the manufacturer b Authorized representative for compiling the technical documents 901160011 11 07 11 SEW EURODRIVE GmbH Co KG Ernst Blickle Straße 42 D 76646 Bruchsal declares under sole responsibility that the motors of the series DR63 category 3GD labeling II3G Ex nA IIB T3 Gc II3G Ex nA IIC T3 Gc II3D Ex tc IIIB T120 C Dc II3D Ex tc IIIB T140 C Dc II3D Ex tc IIIC T120 C Dc II3D Ex tc IIIC T14...

Страница 58: ... Johann Soder Place Date Managing Director Technology a b a Authorized representative for issuing this declaration on behalf of the manufacturer b Authorized representative for compiling the technical documents 6 852 5 9 PE R UQVW OLFNOH 6WUD H UXFKVDO GHFODUHV XQGHU VROH UHVSRQVLELOLW WKDW WKH PRWRUV RI WKH VHULHV 9 9 FDWHJRU ODEHOLQJ Q 7 W 3 7 W 3 7 W 3 7 W 3 7 DUH LQ FRQIRUPLW ZLWK 7 LUHFWLYH S...

Страница 59: ...n options 14 Copyright 6 Counterbores 24 Customer service 54 D DC link voltage 37 Declaration of Conformity 55 Declaration of conformity 31 Degree of protection 48 Designated use 8 Drying motor 17 Dust 26 E Electrical connection 10 Electrical Installation 23 Electrostatic charging 22 Embedded safety notes 6 EMC 25 41 Environmental impact 26 Equipment accessory 34 Equipotential bonding 24 Extended ...

Страница 60: ... values 36 Operation with frequency inverter 36 Other applicable documentation 9 Overhung loads 51 P Painting 22 48 Parameter setting Frequency inverters for category 3 43 PE connection 28 Protection device 34 PTC thermistor Categories 2GD and 3GD 33 Pulse voltage 36 R Regeneration 37 Removing a forced cooling fan 50 Repairs 47 Replace adapter plate 49 Restart 47 S Safe operation Motors in categor...

Страница 61: ...rame 20 Test report 47 TF 34 TF temperature sensor 34 Thermal limit characteristic curves Asynchronous motors 40 Thermal motor protection Category 3GD 41 Tightening torques of the terminal box 22 52 Transport 9 Type designation 13 Temperature detection 14 Type designation EDR Connection variants 14 Mechanical additions 14 Motor series 14 Motors for hazardous locations 15 Other additional features ...

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Страница 64: ...SEW EURODRIVE Driving the world SEW EURODRIVE GmbH Co KG Ernst Blickle Straße 42 76646 BRUCHSAL GERMANY Phone 49 7251 75 0 Fax 49 7251 75 1970 sew sew eurodrive com www sew eurodrive com ...

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