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

NTT 400 D

Onboard power supply transformer (Roof mounted)

NTT 400 D

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
  • Natural Cooling 
  • Pollution degree PD4
  • Various performance classes

 

Description


The REO transformer NTT 400 D is designed for on-board power supplies, which are fed by the auxiliary converter.The transformer NTT 400 D is the complete, ready to use-unit with transformer, mounting frame and housing. It 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. 10 - 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

  • Insulation class: F/H
  • Test voltage: EN 50124 / EN 60310
  • Operating temperature:  -40°C ... +55°C (optional +75°C)
  • Humidity: max. 95%
  • Pollution: PD 4
  • 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 : 10000 - 30000 VA
  • Input voltage : 3x440 V

Circuit example

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

NTT 400 D

Onboard power supply transformer (Roof mounted)

Technical data

Type

Power 
[kVA]

Total weight 
[kg]

Copper
[kg]

Efficiency 
[%]

Uk
[%]*

NTT 400 D/15.0

15.0

96

29

97.1

2.6

NTT 400 D/20.0

20.0

126

36

97.4

2.3

NTT 400 D/25.0

25.0

150

51

97.5

2.5

NTT 400 D/30.0

30.0

175

57

97.8

2.1

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

NTT 400 D

Onboard power supply transformer (Roof mounted)

Dimension drawing 

 

Dimensions

Type

L

[mm]

B

[mm]

H

[mm]

N1

[mm]

N2

[mm]

N3

[mm]

D

[mm]

Mass

[kg]

NTT 400 D/15.0

1800

581

376

1717

363

65

13x26

192

NTT 400 D/20.0

1800

581

376

1717

363

65

13x26

219

NTT 400 D/25.0

1800

581

376

1717

363

65

13x26

247

NTT 400 D/30.0

1800

581

376

1717

363

65

13x26

267

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

NTT 400 D

Onboard power supply transformer (Roof mounted)

Environmental conditions, cooling, contact and moisture protection

Environment

 

Mounting

Hanging as a underfloor housing

 (alternatively possible with the REO supporting frame for the roof mounting)

Vibration and shock resistance

Shock resistance: EN 61373 with 5g in all directions

 Vibration resistance: EN 61373 Category 1 - Class B

Environmental impact

Requirement

Ambient temperature during normal operation

-25°C bis +55°C (max. +45°C outside)

Ambient temperature during storage, transport

-25°C to +85°C

Classification according to EN 60721-3-5

Climate class

 Biologically active substances

 Chemically active substances

 Contamination means

 Mechanically active substances

 

5K2

5B2

5C2

5F2

5S2

Pollution degree according to EN 50124

PD 4

Overvoltage category as per EN 50124

OV3

Air temperature class EN 50125-1

T1

Class height range EN 50125-1

AX to 1500 m

Cooling and coolant according to IEC 60310

Air cooling speed on surface

Coolant flow rate

Coolant inlet temperature:

AN

0,5 m/s

 

 

Protection acc. to IEC 60529

IP 54 (Anschlusskasten) optional

IP 24 (Wicklung)

Protection class according to EN 61140

I

Vibration (all-metal damper)

4 Pcs (optional)