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This braking resistor is an option for variable speed drives of the Altivar range. It has an Ohmic value of 8Ohms at 20°C. This braking resistor allows your variable speed drive to operate while braking to a standstill by dissipating the braking energy and enabling maximum transient braking torque. Its protection index is IP20. It weighs 4.5kg. This resistor is designed to be mounted on the outside of the enclosure but should not inhibit natural cooling; air inlets and outlets must not be obstructed in any way.
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Range compatibility | Altivar Machine ATV320, Altivar Machine ATV340, Altivar Process ATV900 |
| Product or component type | braking resistor |
| [Ue] rated operational voltage | 250 V AC, 24 V DC |
| Ohmic value | 8 Ohm |
| Complementary | |
| Average power available | 1.1 kW at 50 °C |
| Depth | 180 mm |
| Width | 190 mm |
| Duty cycle | medium cycle (heavy duty) <4 s braking with 165 % braking torque for a 40 s cycle , medium cycle (normal duty) <4 s braking with 135 % braking torque for a 40 s cycle , light cycle (normal duty) <0.8 s braking with 120 % braking torque for a 40 s cycle , light cycle (heavy duty) <0.8 s braking with 150 % braking torque for a 40 s cycle |
| Product compatibility | variable speed drive ATV320 11 kW 200...240 V, variable speed drive ATV340 45 kW 380...480 V light cycle, variable speed drive ATV930 wall mount 15 kW 200...240 V medium cycle, variable speed drive ATV950 wall mount 55 kW 380...480 V light cycle, variable speed drive ATV930 wall mount 15 kW 200...240 V light cycle, variable speed drive ATV930 wall mount 55 kW 380...480 V light cycle |
| Electrical connection | terminal, connection capacity: <= 4 mm² / AWG 10 for temperature control switch, terminal, connection capacity: <= 35 mm² / AWG 3 for drive |
| Net weight | 4.5 kg |
| Protection type | thermal protection via drive or temperature control switch at 120 °C |
| Height | 640 mm |
| Environment | |
| IP degree of protection | IP20 |
| Ambient air temperature for storage | -25-70 °C |
| Ambient air temperature for operation | 0-50 °C |
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