Liquid-cooled three-phase mains choke 8% Uk
Description
Water cooled chokes are available with ingress protection ratings IP00 to IP65. REO can utilize several methods of water cooling these components. This provides controlled conduction of heat losses, ensuring that the local environment is not heated. Water cooling ensures that component temperatures are greatly reduced, reducing component stress and increasing product life. REO technology provides excellent heat distribution, preventing the emergence of so-called hot spots.
Advantages
- Protection class up to IP 65
- Longer lifetime
- Optimal heat dissipation
- Suitable for railway applications
Technical Data
- Insulation class: F
- Cooling medium: water/glycol (other cooling liquids on request)
- Max. Coolant inlet temperature: 50° C
- Rated voltage : 400 V
- Rated Current: 200 – 1200 A
- Inductance: 0.012 – 0.074 mH
| Type | Rated voltage [V] | Rated current [A] | Uk | Linear up to | Inductance [μH] | R20 [mΩ] | Winding weight [kg] |
| NTT MD 953/200 | 3 x 400 (optional 3×690) | 200 | 8% | 300 | 74 | 2,1 | 7 |
| NTT MD 953/400 | 3 x 400 (optional 3×690) | 400 | 8% | 600 | 37 | 0,96 | 11 |
| NTT MD 953/600 | 3 x 400 (optional 3×690) | 600 | 8% | 900 | 25 | 0,49 | 15 |
| NTT MD 953/800 | 3 x 400 (optional 3×690) | 800 | 8% | 1200 | 18 | 0,4 | 19 |
| NTT MD 953/1000 | 3 x 400 (optional 3×690) | 1000 | 8% | 1500 | 15 | 0,3 | 18 |
| NTT MD 953/1200 | 3 x 400 (optional 3×690) | 1200 | 8% | 1800 | 12 | 0,18 | 32 |
