Terms & Conditions
Locations
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.
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Protection type | integrated thermal protection by thermal probe |
| Range compatibility | Altivar Process ATV900, Altivar 61, Altivar 71, Altivar 71Q, Altivar 61Q |
| Product compatibility | variable speed drive ATV930 without braking chopper 315 kW 380...480 V, variable speed drive ATV930 without braking chopper 250 kW 380...480 V, ATV71QC25N4, ATV71QC20N4, ATV71QC16N4, ATV71HC28N4, ATV71HC25N4, ATV71HC20N4, ATV61QC31N4, ATV61QC25N4, ATV61QC20N4, ATV61HC31N4, ATV61HC25N4 |
| Minimum resistor value to associate | 1.05 Ohm |
| Thermal losses | 550 W |
| Complementary | |
| Operating position | vertical |
| Maximum braking power | 420 kW |
| Volume of cooling air | 100 m3/h |
| Activation threshold | 785 V DC +/- 1 % |
| Load factor | 0.5 for 250 kW at constant power and at engage threshold, 0.15 for 320 kW at constant power and at engage threshold, 0.05 for 420 kW at constant power and at engage threshold |
| Maximum DC bus voltage | 850 V |
| Net weight | 30 kg |
| Permanent braking power | 200 kW at 400 V (at constant power and at engage threshold) |
| Environment | |
| Ambient air temperature for storage | -25-70 °C |
| Pollution degree | 2 conforming to EN 50178 |
| Vibration resistance | 0.2 gn |
| IP degree of protection | IP20 |
| Ambient air temperature for operation | -10-50 °C |
| Operating altitude | 2000 m |
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