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

NTT 400

Onboard power supply transformer

NTT 400

Unique Selling Point


  • Vibration and shock tested according to DIN 61373 Cat 1 Class B
  • High efficiency
  • Low idling losses
  • Reduced field scattering
  • Low noise
  • Reduced weight
  • High mechanical resistance
  • Mounting in the exhaust duct of the power converter
  • Integration into an existing cooling system
  • Pollution degree PD3
  • Shield winding possible
  • Alternative switching groups
  • Temperature monitoring

Description


The REO transformer NTT 400 is designed for on-board power supplies, which are fed by the auxiliary converter. He is used to adjust the voltage and for galvanic separation of pulse-width modulated DC link voltage and the consumers of the electrical system . A corresponding sinusoidal filter must be connected between the transformer and the inverter.
The secondary-side load of the isolation transformer can be switchgears, rotating equipment , resistive loads or semiconductor power converters.The transformers are designed for the use in vehicles with AC or DC power (in inverter mode). This guarantees that REO transformers are optimally suited to your application. Our development methods emphasize maximum useful lifetime, cost/benefit optimization and safety.

  • Power. 1 - 30 kVA
  • Rated voltage

    Primary:
    Rated voltage: (Normal operation): 3x440 Veff 60 Hz
    Rated voltage: (external power supply): 3x400 Veff 50 Hz
    Rated voltage: (reduced operation): 3x345 Veff 47 Hz

    Secondary:
    Voltage: 3x230 Veff

  • Cooling: AN / AF
  • Protection rating: IP00
  • Insulation class: F/H
  • Test voltage: EN 50124 / EN 60310
  • Operating temperature:  -40°C ... +55°C (optional +75°C)
  • Humidity: max. 95%
  • Pollution: PD 3
  • Vibration resistance: Cat.1 class A/B acc. to EN61373
  • Voltages: 24 / 42 / 110 / 230 / 400 / 690 Volt (Optional)
  • Switching group: Optional

 

Customer-specific components

Onboard power supply transformer can be custom designed. Are you interested in this product? Please contact us!

Besides the standard components for use in the converter, REO offers customerspecific products - as individual components or as a complete solution in a ontainer. The most important criteria in railway engineering are availability for operation and passenger safety. Here, REO offers customized solutions that we develop step by step in close cooperation with our client. 

Technical Data


  • Rated power : 1000 - 30000 VA
  • Input voltage : 3x440 V

Circuit example

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

NTT 400

Onboard power supply transformer

Technical data

Type

Power 
[kVA]

Total weight 
[kg]

Copper
[kg]

Efficiency 
[%]

Uk
[%]*

NTT 400/1.0

1.0

12

4

92.6

6.7

NTT 400/1.5

1.5

17

5

93.9

5.4

NTT 400/2.5

2.5

26

7

95.0

4.5

NTT 400/4.5

4.5

39

13

95.5

4.1

NTT 400/7.5

7.5

59

22

96.1

3.8

NTT 400/10.0

10.0

73

25

96.4

3.4

NTT 400/15.0

15.0

96

29

97.1

2.6

NTT 400/20.0

20.0

126

36

97.4

2.3

NTT 400/25.0

25.0

150

51

97.5

2.5

NTT 400/30.0

30.0

175

57

97.8

2.1

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

NTT 400

Onboard power supply transformer

Dimension drawings 

 

Dimensions

Type

L

[mm]

B

[mm]

H

[mm]

N1

[mm]

N2

[mm]

D

[mm]

NTT 400/1.0

230

93

198

74

176

9

NTT 400/1.5

230

117

198

98

176

9

NTT 400/2.5

265

135

228

105

200

10

NTT 400/4.5

300

151

260

123

224

10

NTT 400/7.5

360

173

305

147

264

10

NTT 400/10.0

420

178

360

148

316

13

NTT 400/15.0

420

208

360

178

316

13

NTT 400/20.0

420

238

360

208

316

13

NTT 400/25.0

480

225

410

189

356

13

NTT 400/30.0

480

248

410

212

356

13