Description
The REO on-board power supply transformer NTT 400 is designed for on-board power supplies that are fed by the on-board power converter (BNU). It serves for voltage adaptation and galvanic isolation of the pulse-width modulated DC link voltage and the consumers of the on-board network. A suitable sine filter must be connected between the Transformer and the inverter. The secondary-side load of the isolation transformer can be switching devices, rotating machines, ohmic loads, and semiconductor converter devices. The Transformers are designed for use in vehicles in AC or DC networks (in inverter operation) within a container.
This ensures that Transformers from REO are optimally suited for your application. Maximum service life, cost-benefit optimization, and safety are the key priorities in our development.
Customized complete solutions
On-board power supply transformers can be custom-designed. Are you interested in this product? Please contact us!
In addition to standardized components for use in converters, REO offers customized products – as a single component or as a complete solution in a container. The benchmark in railway technology is the availability and safety of passengers. Here, REO offers special solutions that are developed step by step in close cooperation with the customer.
Advantages
- Vibration and shock tested according to
- DIN 61373 Cat 1 Class B
- High efficiency
- Low no-load losses
- Reduced stray field
- Low noise
- Weight-optimized
- High mechanical strength
- Installation 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
Technical data
- Power: 1-30kVA
Nominal voltage:
Primary:
- Rated voltage: (Normal operation): 3×440 Veff 60 Hz
- Rated voltage: (External supply): 3×400 Veff 50 Hz
- Rated voltage: (Reduced operation): 3×345 Veff 47 Hz
Secondary:
- Voltage: 3×230 Veff
- Operating temp.: -25°C … +55°C (optional +75°C)
- Cooling: AN / AF
- Protection class: IP00
- Pollution degree: PD3
- Insulation class: F/H
- Test voltage: EN 50124 / EN 60310
- Vibration resistance: Cat.1 Class A/B according to EN61373
- Voltages: 24 / 42 / 110 / 230 / 400 / 690 Volt (Optional)
- Switching group: Optional
| Type | Power [kVA] | Total weight [kg] | Copper weight [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 |
| 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 |
