Altivar AFE Inverter Schneider 120kW - 860kW

Altivar AFE (Aktive Front End) option for energy regeneration to the line supply

Altivar AFE Models

• VW3A7250 : active infeed converter - 120 kW - 380/480V
• VW3A7251 : active infeed converter - 145 kW - 380/480V
• VW3A7252 : active infeed converter - 175 kW - 380/480V
• VW3A7253 : active infeed converter - 240 kW - 380/440V
• VW3A7254 : active infeed converter - 275 kW - 380/480V
• VW3A7255 : active infeed converter - 340 kW - 380/480V
• VW3A7256 : active infeed converter - 430 kW - 380/440V
• VW3A7257 : active infeed converter - 540 kW - 380/440V
• VW3A7258 : active infeed converter - 675 kW - 380/480V

Applications

• Crane applications (hoists, long travel motion)
• Downhill conveyors, winches, escalators
• Complex drive systems
• Test benches and high dynamic drives
• Pump/turbine combinations
• Low harmonic drives

Technical data

• Power range of 120 – 860 kW
• 3-phase 380 - 480V ±10%; 50/60Hz ±5 %
• 3-phase 500 - 525V ±10%; 50Hz ±5 %
• 3-phase 575 - 690V ±10%; 50/60Hz ±5 %
• Built-in unit with protection degree IP00
• Operating temperature from -10°C...+45°C (up to +60°C with derating)

Line disturbance/conditions

• THD(i) of less than 4%
• Power factor of cos Phi 1 independent of the load and the energy direction
• Line voltage drops of up to 40% without disturbing operation
• Wide frequency range
• Line short-circuit power up to 100kA

Simple planning and installation

• Line contactor already integrated
• No external control voltage supply necessary
• Integrated charging circuit providing a maximum fourfold power at the DC bus
• Operation independent of the phase sequence

Energy-saving operation

• Energy regeneration to the line supply
• Improved efficiency thanks to an innovative control system
• No need for damping resistors (which cause heavy losses), thus making it is especially robust in heavily distorted supply voltages
• Reduction of transformer losses, wiring and switching devices

The Active Front End is connected upstream of the standard frequency inverter and consists of three components :

• Active infeed converter - AIC
• Line filter module - LFM (EMC filter, line contactor and charging circuit)
• Line filter choke - LFC (3 parts)

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