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Siemens SIMOREG 6RA7081-6GS22-0

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6RA7081-6GS22-0

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The Siemens 6RA7081-6GS22-0, part of the SIMOREG series, is a single-quadrant DC rectifier. It supports a line input of 575 V 3-phase AC and provides a nominal DC output of 690 V at a current of 400 A.

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Technical specifications for 6RA7081-6GS22-0

ManufacturerSiemens
Product TypeSingle-quadrant DC rectifier
Product LineSIMOREG
Part Number6RA7081-6GS22-0
Weight32.00 lbs (14.51 kg)
Size625×268×318 mm, 30–35 kg
Cooling & MountingAir-cooled, chassis
Control & RegulationDigital closed/open loop
Communications & I/OOptional bus/I-O cards
Line (Armature) Input575 V 3-phase AC
Line (Armature) Current332 A
Rectifier Topology6-pulse (B6C)
DC Bus (Nominal)690 V DC
DC Output Current400 A
North-American Rating276 A
Field Supply (Electrical)460 V AC in
Field DC Output375 V, 25 A
Power Class~240 kW
Parallel / System UseParallel / 12-pulse
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The Siemens 6RA7081-6GS22-0 is a specialized single-quadrant DC rectifier designed for various industrial applications. It features a robust cooling system utilizing air and is mounted in a chassis format. With a size of 625×268×318 mm and a weight ranging from 30 to 35 kg, this unit is manageable for installation and maintenance tasks.

The device employs a digital control mechanism that facilitates both closed and open loop regulation, ensuring accurate performance in various operating conditions. For communication purposes, optional bus and I/O cards can be integrated, enhancing the unit’s connectivity and functionality. The rectifier accepts a line input of 575 V three-phase AC and is rated for a maximum armature current of 332 A.

With a rectifier topology configured as a 6-pulse (B6C), the DC bus operates nominally at 690 V DC, delivering a significant output current of 400 A. The North-American operational rating for this unit stands at 276 A, accommodating regional electrical standards. The field supply input operates at 460 V AC, allowing for a field DC output of 375 V at a current of 25 A. This rectifier is classified within a power range of approximately 240 kW.

Additionally, the 6RA7081-6GS22-0 supports parallel usages and can be configured for a 12-pulse system, making it suitable for scenarios requiring multiple units to operate harmoniously. This flexibility positions it effectively within various demanding environments.