This braking unit is an option for variable speed drives of Altivar range. The minimum resistor value to associate is 1Ohm. This braking unit allows Altivar 71 drives to operate while braking to a standstill or during “generator” operation, by dissipating the energy in the braking resistor. Its protection index is IP20. Thermal protection is provided by an integrated temperature probe. It weighs 30kg.
Specifications
| Main |
| Part Number |
VW3A7101
|
| Range compatibility |
Altivar 61Q |
| Altivar 71Q |
| Altivar 71 |
| Altivar 61 |
| Altivar Process ATV900 |
| product compatibility |
ATV61HC25N4 |
| ATV61HC31N4 |
| ATV61QC20N4 |
| ATV61QC25N4 |
| ATV61QC31N4 |
| ATV71HC20N4 |
| ATV71HC25N4 |
| ATV71HC28N4 |
| ATV71QC16N4 |
| ATV71QC20N4 |
| ATV71QC25N4 |
| Variable speed drive ATV930 without braking chopper 250 kW 380…480 V |
| Variable speed drive ATV930 without braking chopper 315 kW 380…480 V |
| Thermal losses |
550 W |
| Minimum resistor value to associate |
1.05 Ohm |
| protection type |
Integrated thermal protection by thermal probe |
| Complementary |
| Maximum braking power |
420 kW |
| permanent braking power |
200 kW at 400 V (at constant power and at engage threshold) |
| load factor |
0.05 for 420 kW at constant power and at engage threshold |
| 0.15 for 320 kW at constant power and at engage threshold |
| 0.5 for 250 kW at constant power and at engage threshold |
| Activation threshold |
785 V DC +/- 1 % |
| Maximum DC bus voltage |
850 V |
| Net weight |
30 kg |
| Volume of cooling air |
100 m3/h |
| Operating position |
Vertical |
| Environment |
| IP degree of protection |
IP20 |
| operating altitude |
2000 m |
| Ambient air temperature for operation |
-10…50 °C |
| Ambient air temperature for storage |
-25…70 °C |
| pollution degree |
2 conforming to EN 50178 |
| Vibration resistance |
0.2 gn |
| Packing Units |
| Unit Type of Package 1 |
PCE |
| Number of Units in Package 1 |
1 |
| Package 1 Height |
37.000 cm |
| Package 1 Width |
110.000 cm |
| Package 1 Length |
49.000 cm |
| Package 1 Weight |
48.000 kg |
| Contractual warranty |
| Warranty |
18 months |
