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Your contact: +49 - 212 8804-0 • info@reo.de

CNW MD 903

Three-phase mains choke with indirect cooling 4% Uk

CNW MD 903

Unique Selling Point


  • Low surface temperature
  • Up to 80% power dissipation with water cooling
  • Compact design
  • Protection against dust, moisture
  • Extended service life of electrical consumers
  • Low temperature rise
  • Attenuation of current spikes of up to 60%
  • Reduction of the input current up to 20%
  • Low noise
  • Production possible according to UL insulation system E251513

Description


Power Noise Reduction - save up to 20% energy costs.

A mains choke relieved the supply network by compensating the harmonics reactive power. The harmonics and commutation notches are reduced strongly. By efficiently cooling the power losses is dissipated up to 80% in cooling and reduces heating of switching cabinets. The targeted derivative of the losses via the cooling circuit prevents that losses are discharged into the environment. By using water cooling the temperatures in the components can be reduced greatly - this means less stress for the insulation materials and a longer service life.

Starting currents and current peaks are reduced up to 60%. Mains chokes helps to comply with international power quality standards IEEE 519 or EN 61000-3-2.

  • Rated current: U ≤ 3 x 400 V
  • Short circuit:: Uk 4% (400VAC/50Hz, INenn)
  • Frequency:  50/60 Hz
  • According to: EN 60289 / EN 61558
  • Test voltage: L-L 2500 V, DC 1min; L-PE 2500 V, DC 1min
  • Insulation class: T40/F
  • Protection rating: IP00
  • Climatic categorie: DIN IEC 60068-1
  • Overload: 1,5 x INenn 1 min / h
  • Cooling medium: Water/Glycol (70/30 %)
  • Max. Coolant outlet temperature: 50 ° C
  • Flow rate: min. 3,6 l/min.
  • Pressure drop: <0,5 bar


Typical applications

  • Drive systems for motor drives:
    • Mechanical engineering
    • Elevators / escalators
    • Pipes
    • Conveyor technology
    • Ventilation and air conditioning
    • Robotics
    • Automation technology
  • Power supplies
  • Wind turbines

Technical Data


  • Nominal Voltage : 400 V
  • Rated current : 200 - 1200 A
  • Inductance : 0,024 - 0,147 mH

Circuit diagram

Your contact: +49 - 212 8804-0 • info@reo.de

CNW MD 903

Three-phase mains choke with indirect cooling 4% Uk

Technical data

Type

Rated voltage
[V]

Rated current
[A]

Uk

Linear
up to

Inductance
[µH]

R20
[mΩ]

Windings weight
 [kg]

CNW MD 903/200

3 x 400
(optional 3x690)

200

 

 

4%

 

 

300

147

1,9

4

CNW MD 903/400

400

600

74

0,7

8

CNW MD 903/600

600

900

49

0,41

10

CNW MD 903/800

800

1200

37

0,28

13

CNW MD 903/1000

1000

1500

29

0,24

15

CNW MD 903/1200

1200

1800

24

0,19

12

Higher power ratings on request

 

For Europe

For USA

Frequency: 50 Hz

Frequency: 60 Hz

Short circuit voltage Uk: 4% (by 400V)

Short circuit voltage Uk: 9,6% (by 200V)

Voltage drop: 9,23 V/branch

Voltage drop: 11,05 V/branch

Your contact: +49 - 212 8804-0 • info@reo.de

CNW MD 903

Three-phase mains choke with indirect cooling 4% Uk

 

Dimension drawings

 

Dimensions

Type

A
[mm]

B
[mm]

C
[mm]

Weight
[kg]

Braced

CNW MD 903/200

380

325

250

70

CNW MD 903/400

380

380

260

95

CNW MD 903/600

380

380

325

140

CNW MD 903/800

390

450

295

175

CNW MD 903/1000

390

485

335

225

CNW MD 903/1200

400

505

335

260

Unbraced

CNW MD 903/200

380

320

215

48

CNW MD 903/400

380

375

220

60

CNW MD 903/600

380

375

270

80

CNW MD 903/800

390

445

280

95

CNW MD 903/1000

390

480

285

110

CNW MD 903/1200

400

500

290

120