- PDF Free Download

Size: px

Start display at page:

Download ""

Imogen Black
5 years ago
Views:

10 Delivery of a 4,700 kw mill drive for a cement plant in Sweden Three-phase slipring motor Make: HELMKE Type: DSWK Power: 4700 kw Voltage: 6600 V Frequency: 50 Hz Speed: 992 1/min Rated current: 472 A Type of construction: B3 with baseframe for the adaption to the original foundations Cooling method: IC 81W Degree of protection: IP 55 Weight: 18,500 kg Accessories 6 x PT 100 winding 2 x PT 100 bearing Sleeve bearings with hydrostatic Anti-condensation heater 230 V for stator and slipring compartment Separate starpoint terminal box with 3 current transformers 500/5 A Slipring compartment lighting Slipring compartment with forced ventilation Oil supply unit Separate PT 100 for slipring compartment temperature Delivery including a separate oil supply unit for the oil supply of the sleeve bearings and a separate 6.6 kv terminal box to install the 6.6 kv plug-system for the stator connection.

Task: Delivery of a 4,700 kw slipring motor for a Polysius ball mill, as far as possible electrically and mechanically exchangeable to the

100% mechanically exchangeable with the original ASEA motor, assembly on the foundations on site Design in type of construction IM 1002

Design with identical rotor data so that the existing starters do not have to be modified.

bearings in order to guarantee the operation of the motor with crawl speed for revision works at the mill Construction of the slipring

With additional forced ventilation and monitoring with air-vane relay and pressure switch.

foundation 6.6 kv stator connection with a medium-voltage plug-system. Additional installation of a separate 6.

Delivery with separate starpoint terminal box and current transformers for differential protection The commissioning of the 4,700 kw

11 Task: Delivery of a 4,700 kw slipring motor for a Polysius ball mill, as far as possible electrically and mechanically exchangeable to the ASEA motor, type MAEB 1000 V, assembled on site The technical specification of the 4700 kw motor was fixed together with the operator. 100% mechanically exchangeable with the original ASEA motor, assembly on the foundations on site Design in type of construction IM 1002 with two shaft ends for rated torque, both shaft ends prepared for couplings with oil press fit Electrically exchangeable. Design with identical rotor data so that the existing starters do not have to be modified. Design with ring-oil lubricated sleeve bearings instead of rolling bearings Additional installation of a hydrostatic system for the sleeve bearings in order to guarantee the operation of the motor with crawl speed for revision works at the mill Construction of the slipring compartment with a separate cooling air circuit, segregated from the motor. With additional forced ventilation and monitoring with air-vane relay and pressure switch. Special construction for the rotor- and stator connection, design without terminal boxes for a direct connection through the concrete foundation 6.6 kv stator connection with a medium-voltage plug-system. Additional installation of a separate 6.6 kv terminal box directly at the 6.6 kv supply cable, 3 metres underneath the motor in the concrete foundation. Delivery with separate starpoint terminal box and current transformers for differential protection The commissioning of the 4,700 kw slipring motor was carried out in August During the commissioning the starting process was checked with the liquid starter available on site and a wear of the starter electrodes was noticed. After an exchange of the electrodes and a correction of the electrolyte concentration a safe and reliable operation of the HELMKE motor is guaranteed today. Internet

15 Newsletter No. 08/ HELMKE News Delivery of an 28pole synchronous motor for a paper mill in France Delivery of an electrically and mechanically exchangeable reserve motor for two vacuum pump drives, make: Strömberg, type: HSSTL. In its works in Rouen, the company UPM operates two 18 year old Strömberg synchronous motors. The motors are designed with two shaft ends, each motor driving four vacuum pumps. The power of the motors is 1,200 kw, the speeds are 214 1/min (28pole) and 250 1/min (24pole). As the vacuum generation is a key function in the paper manufacturing process, UPM had tendered the delivery of a reserve machine. HELMKE was in competition with all well known European manufacturers, also with ABB who could revert to the original manufacturing documents. In the course of this project HELMKE developed an 28pole synchronous motor in type of construction IM7312. This motor could be installed on the baseframe on site which was cast in concrete. The technical requirements were as follows: 100% mechanically exchangeable with the original Strömberg motors Identical rotor construction by keeping the original starting torques without significant voltage drops Identical design and position of the stator terminal boxes and auxiliary terminal boxes Delivery including baseframe for load test and transport Design with increased efficiency eta = 94.5% instead of 93.8% (ABB) Disassembly of the original Strömberg machine and assembly of the new reserve motor by HELMKE personnel within 48 hours. Helmke Sàrl won this project over ABB in May The synchronous was delivered on schedule within 7 months. In December 2004 the machine was accepted by the operator in the course of a load test carried out in the HELMKE system testing station in Pulversheim. In May 2005 the machine was assembled in Rouen within the predetermined time frame of 48 hours and is running to our customer s full satisfaction since then. Technical data of the HELMKE synchronous motor: Make: HELMKE Type: DYVK Power: 1,200 kw Voltage: 5,500 V Frequency: 50 Hz Speed: 214 1/min Rated torque: 53,500 Nm Type of construction: IM7312 with two shaft ends Degree of protection: IP 23 Cooling method: IC 01 Excitation: 220 V / 105 A J Motor : 4,100 kgm 2 Weight: 19,300 kg J. Helmke & Co. Headquarters Garvensstraße Hannover Deutschland PO Box Hannover Deutschland Phone: +49 (0) 5 11 / Fax: +49 (0) 5 11 / e mail: helmke@helmke.de Subsidiaries Deutschland France Russia Nederland Italia Sverige España Schweiz Internet

18 Notes

19 Subsidiaries Germany J. Helmke & Co. Ludwig-Erhard-Ring Sarstedt Postfach Sarstedt Tel.: Fax: Helmke Orbis GmbH Garvensstraße Hannover Postfach Hannover Tel.: Fax: orbis@helmke.de France Helmke S.à.r.l. Z.I. -1 Allée Vert Bois BP 17 F Pulversheim Tel.: Fax: helmke@helmke.fr Helmke S.à.r.l. Bureau de Lyon 107, Cours Albert Thomas Lyon Tel.: Fax: helmke.lyon@helmke.fr Helmke Orbis S.à.r.l. Z.I. -1 Allée Vert Bois BP Pulversheim Tel.: Fax: helmkeorbis@helmke.fr Russia J. Helmke & Co. Moscow Office Leningradsky Prospekt 39, Building Moscow Tel. & Fax info@helmke.ru The Netherlands Helmke B.V. Elektrische machines en aandrijvingen Aalbosweg MA Vaassen Postbus 1 95 NL-8170 AD Vaassen Tel.: Fax: info@helmke.nl Italy Helmke Italia S.r.l. Via A. Volta, Corsico (Mi) Tel.: Fax: helmke.italia@iol.it Sweden Helmke Norden AB August Barks Gata Västra Frölunda (Göteborg) Tel.: Fax: info@helmke.se Spain Helmke Orbis España Camino de Mundaiz no. 10 bis 2 Ofic. 24-A E San Sebastián Tel.: Fax: helmke@terra.es Switzerland Proproject AG Wettsteinplatz Basel Tel.: Fax: Internet

20 Internet

Documentation System Test Field

Documentation System Test Field Contents 1. Performances and technical opportunities...2 2. References / Examples of Application...3 2.1. Checkout at a Medium Voltage Drive...3 2.2. Acceptance Test at