Single-phase DC link choke (1 conductor)
Description
Compact & Efficient
Reduce mains interference – save energy costs.
The DC link choke is used to smooth the DC link current and reduce mains feedback in voltage DC link converters.
The typical combinations of rectifiers and capacitors place a considerable load on the supply network. Due to its function, the current consumption of the power supplies or converters is not sinusoidal, but pulse-shaped at the moment of the voltage maximum. DC link chokes reduce the harmonics and relieve the supply network in a similar way to the mains choke. In addition, the DC link choke dampens the charging current peaks of the DC link capacitors. A DC link choke reduces the burden on the supply network with harmonic reactive power.
Improvement of the efficiency of a converter (Power Factor Correction). Inrush currents and current peaks are damped by up to 70%. Mains chokes help to comply with the international PowerQuality standards IEEE 519 or EN 61000-3-2.
Typical application
Drive technology for motor drives, e.g. mechanical engineering, elevators, escalators, pumps, conveyor technology, ventilation and air conditioning, robotics, automation technology, power supplies, wind turbines
Benefits
- Reduction of harmonic overtones
- Damping of current peaks up to 70%
- compact design
- Advantages compared to the mains choke:
- smaller size
- lower material costs / price
- lower power dissipation
- Production according to UL insulation system E251513 possible
Technical data
- Nominal voltage: U ≤ 600 V
- According to: EN 60289 / EN 61558
- Test voltage: L-PE 4000 V, AC/50Hz, 60s
- Insulation class: T40/F
- Protection class: IP00
- Climate category: DIN IEC 60068-1
- Overload: 1.5 x INominal 1 min / h
- Design: standing on foot bracket
| Type | Nominal voltage U [V] |
Nominal current [A] |
Inductance [mH] |
Power dissipation [W] |
Mass [kg] |
Mass Cu [kg] |
| N CNW 891 / 8 | 600 50 / 60 Hz |
8 | 9,4 | 14 | 1,4 | 0,3 |
| N CNW 891 /11 | 600 50 / 60 Hz |
11 | 6,2 | 15 | 2 | 0,3 |
| N CNW 891 / 15 | 600 50 / 60 Hz |
15 | 4,8 | 20 | 2,8 | 0,6 |
| N CNW 891 / 20 | 800 50 / 60 Hz |
20 | 3,3 | 19 | 3,6 | 0,6 |
| N CNW 891 /28 | 800 50 / 60 Hz |
28 | 2,4 | 22 | 3,6 | 0,8 |
| N CNW 891 / 34 | 800 50 / 60 Hz |
34 | 2,0 | 29 | 4,5 | 0,8 |
| N CNW 891 / 40 | 800 50 / 60 Hz |
40 | 1,6 | 31 | 7 | 1 |
| N CNW 891 / 55 | 800 50 / 60 Hz |
55 | 1,2 | 43 | 8 | 1,2 |
| N CNW 891 / 70 | 800 50 / 60 Hz |
70 | 0,98 | 49 | 10,5 | 1,4 |
| N CNW 891 / 85 | 800 50 / 60 Hz |
85 | 0,81 | 60 | 13,6 | 1,8 |
| N CNW 891 / 100 | 800 50 / 60 Hz |
100 | 0,67 | 70 | 14 | 2,5 |
| Type | Length L1 (mm) | Width B1 (mm) | Width B2 (mm) | Height max. H (mm) | Mounting N1 (mm) | Mounting N2 (mm) | Mounting D1 (mm x mm) | Connection terminal/ cable lug [mm²] |
PE connection | Connection A1 (mm) | Image |
| N CNW 891 / 8 | 84 | 76 | 62 | 80 | 64 | 48 | 5 x 8 | 2,5 | Flat connector 6.3 x 0.8 | 1 | |
| N CNW 891 /11 | 84 | 90 | 76 | 80 | 64 | 62 | 5 x 8 | 2,5 | Flat connector 6.3 x 0.8 | 1 | |
| N CNW 891 / 15 | 96 | 95 | 88 | 85 | 84 | 72 | 6 x 11 | 2,5 | Flat connector 6.3 x 0.8 | 1 | |
| N CNW 891 / 20 | 96 | 138 | 102 | 85 | 84 | 85 | 6 x 11 | 10 (m5) | M5 | 40 | 2 |
| N CNW 891 /28 | 96 | 138 | 102 | 85 | 84 | 85 | 6 x 11 | 16 (M5) | M5 | 40 | 2 |
| N CNW 891 / 34 | 105 | 138 | 105 | 95 | 84 | 87 | 6 x 11 | 16 (M5) | M5 | 40 | 2 |
| N CNW 891 / 40 | 120 | 155 | 120 | 105 | 90 | 105 | 6 x 11 | 16 (M5) | M6 | 45 | 2 |
| N CNW 891 / 55 | 150 | 138,5 | 107,5 | 135 | 122 | 87,5 | 7 x 13 | 16 (M5) | M6 | 45 | 2 |
| N CNW 891 / 70 | 150 | 159 | 124,5 | 135 | 122 | 104,5 | 7 x 13 | 25 (M8) | M6 | 45 | 2 |
| N CNW 891 / 85 | 150 | 185,5 | 150,5 | 135 | 122 | 130,5 | 7 x 13 | 25 (M8) | M6 | 45 | 2 |
| N CNW 891 / 100 | 174 | 162,5 | 121 | 150 | 135 | 101 | 7 x 13 | 35 (M8) | M8 | 50 | 2 |
All data and configurations can be found in our product data sheet.
