High-Voltage Technology

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1 J. Helmke & Co. High-Voltage Technology The offer contains engineering for all projects in the sector of driving technology. Helmke has the largest stock of motors world-wide suitable for brand-new high-voltage motors for all heavy industrial drives, e.g.: more than 100 brand-new rib-cooled high-voltage motors up to 1,800 kw latest Siemens series H-compact plus 1,000-5,000 kw slipring motors of own production up to 6,000 kw and also the interesting surplus stock up to 16,000 kw Please select the desired performance range from the listed categories below: DOR performance range (Three-phase squirrel cage motor, rip-cooled, IP 55) DKK performance range (Three-phase squirrel cage motor, modular, IP 54) DSVK performance range (Three-phase slipring motor, modular, IP 23) DSKK performance range (Three-phase slipring motor, modular, IP 54) Reproductions and custom productions Large well-known manufacturers (ABB, Siemens, Schorch, Alstom)

2 Three-Phase Squirrel Cage Motors High-Voltage Type DOR J. Helmke & Co. The Helmke motor series provide reliability and safety. Squirrel cage motors Power: Speed: Voltage: Degree of protection: Cooling method: Frame type: ,800 kw 3, rpm V IP 55 IC 411 B3 and V1 Conventional applications 2-4 pole: 6-8 pole: pole: pumps, compressors, blowers fans, chippers, mills piston compressors, blowers Constructional features for IC 411 motors torsion resistant, sturdy housing and bearing plates of cast iron with internal and external ribs for an optimum heat dissipation reliable bearing design, DE fixed bearing rotor winding construction with aluminium cage or solid copper cage VPI insulating system end windings resistant to residual field switchovers of all magnitudes and phase positions

3 J. Helmke & Co. Three-Phase Squirrel Cage Motors High-Voltage Type DKK The Helmke motor series provide reliability and safety. Squirrel cage motors Power: Speed: Voltage: Degree of protection: Cooling method: Frame type: 400-9,000 kw 3, rpm 3,000-11,000 V IP 54 IC 611 B3 Conventional applications pumps blowers high performance compressors Helmke DKK modular series extremely robust, torsionally stiff, welded housing construction winding design for stator and rotor winding in temperature class F (VPI), resistant to humidity, chemically aggressive atmospheres, contamination, tropicalized and vacuum switch resistant modular basic construction adaptation of cooling through modification of cooler module basic construction with continuous, solid shafts (not hollow shaft) two-channel ventilation system with intensive cooling of winding ends

4 Three-Phase Slipring Motors High-Voltage Type DSVK J. Helmke & Co. The Helmke motor series provide reliability and safety. Slipring motors Power: Speed: Voltage: Degree of protection: Cooling method: Frame type: ,000 kw 3, rpm 3,000-11,000 V IP 23 IC 01 / 81 W B3 Conventional applications refiners crushers mills fans shredders Helmke DSVK modular series extremely robust, torsionally stiff, welded housing construction winding design for stator and rotor winding in temperature class F (VPI), resistant to humidity, chemically aggressive atmospheres, contamination, tropicalized and vacuum switch resistant modular basic construction adaptation of cooling through modification of cooler module basic construction with continuous, solid shafts (not hollow shaft) range as.pdf document slipring compartment separated from internal stator chamber in terms of ventilation with brushes in permanent contact separately ventilated two-channel ventilation system with intensive cooling of winding ends Example: Type DSVK ,400 kw 6.3 kv 500 rpm IP 23

5 Three-Phase Slipring Motors High-Voltage Type DSKK J. Helmke & Co. The Helmke motor series provide reliability and safety. Slipring motors Power: Speed: Voltage: Degree of protection: Cooling method: Frame type: 400-9,000 kw 3, rpm 3,000-11,000 V IP 54 IC 611 B3 Conventional applications refiners crushers mills fans shredders Helmke DSKK modular series extremely robust, torsionally stiff, welded housing design winding design for stator and rotor winding in temperature class F (VPI), resistant to humidity, chemically aggressive atmospheres, contamination, tropicalized and vacuum switch resistant modular basic construction adaptation of cooling through modification of cooler module basic construction with continuous, solid shafts (not hollow shaft) slipring compartment separated from internal stator chamber in terms of ventilation with brushes in continuous contact separately ventilated Example: Type DSKK ,000 kw 6.3 kv 1,000 rpm IP 54 two-channel ventilation system with intensive cooling of winding ends

6 Reproductions and custom productions J. Helmke & Co. Examples: Sinter blower drive for steel plants three-phase slipring motor 3,600 kw 5,000 V 50 Hz 1,485 rpm matched to original foundation Pump drive for main cooling circuit in a power plant in Columbia three-phase slipring motor 430 kw 4,160 V 60 Hz 708 rpm special design for vertical use Compressor drive for chemical plant three-phase squirrel cage motor extended shaft end frame type C2 additional pedestal bearing for belt drive Chopper drive in Spain slipring motor for speed controlled applications transmission gear for belt pulley on common base frame

7 J. Helmke & Co. Cement mill drive in Germany Drive for a vertical roller mill 3,270 kw 6,000 V 742 rpm special designed with an additional hydrostatic installation in order to raise the rotor in the sleeve-bearing shells.

8 J. Helmke & Co. Large well-known manufacturers Helmke maintains close partnerships and co-operations with all large electrical companies such as: Siemens, ABB, Schorch and Alstom. Brands of the following drives are immediately available, due to Helmke s stocking capacities, e.g.: Siemens 1RR1 Siemens 1LA1 Siemens 1R.4 ABB ABB Schorch (H-Modul) (H-Compact) (H-Compact plus) AMA HXR KA2 The production is able to perform modifications for induvidual adaptations to already existing installations within the shortest possible time. See also reproductions and custom productions.