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Siemens SIMOREG 6RA7078-6FS22

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6RA7078-6FS22

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The Siemens 6RA7078-6FS22 is a SIMOREG DC-Master rectifier designed for robust control applications. This unit efficiently handles 3-phase AC input at 460 volts±15/–20% and provides a nominal DC output of 550 volts with a continuous current capacity of 280 A.

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Technical specifications for 6RA7078-6FS22

ManufacturerSiemens
Product TypeSIMOREG DC-Master Rectifier
Product LineSIMOREG
Part Number6RA7078-6FS22
AC Input (Armature)3-phase, 460 V ±15/–20%
Armature Input Current233 A continuous
DC Output (Armature)550 V DC nominal
DC Output Current280 A continuous
US-rated Output500 V DC, 210 A
Field Input Voltage2-phase, 460 V
Field Output Voltage375 V DC max
Field Output Current15 A
Overload Capacity1.8× rated current (short-term)
Operating TemperatureUp to 40 °C (derate above)
Storage Temperature–25 °C to +70 °C
Max Altitude1000 m without derating
CoolingSelf-ventilated air cooling
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The Siemens 6RA7078-6FS22 is a SIMOREG DC-Master rectifier, focusing on high-performance DC control. This device accepts a 3-phase AC input configuration rated at 460 V with allowable variations of ±15 to –20%. Continuously, it draws an armature input current of 233 A, while delivering a nominal DC output of 550 V with a continuous current rating of 280 A.

The rectifier is capable of providing a US-rated output of 500 V DC at 210 A, ensuring strength in demanding power applications. Its field input consists of a 2-phase 460 V configuration, which translates effectively into a maximum field output voltage of 375 V DC, along with a field output current of 15 A.

Noteworthy is the rectifier's overload capacity, which can temporarily endure up to 1.8 times its rated current, thus offering flexibility during peak demands. Designed for environments with operating temperatures up to 40 °C, the unit should be derated in hotter conditions. Additionally, the machine remains functional at storage temperatures ranging from –25 °C to +70 °C.

With a maximum altitude limit of 1000 m without needing derating, it adapts to varied installation environments. The dimensions of this rectifier are 385 mm in height, 265 mm in width, and 313 mm in depth. Cooling is achieved through self-ventilation, assuring the rectifier's operational stability during extended use.