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DC Drives

Our range of products include sinamics dc drive and dc drives.

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Product Details:
BrandSiemens
Rated Frequency50 Hz
Input PhaseSingle Phase
Input Voltage400 V
Description:
  • The Sinamics DC Drive is a line-commutated converter which requires the line voltage to commutate the current, it is not possible to maintain the current flow on failure of the line voltage (e.g. on a short interruption).
  • If regenerative feedback is used with four-quadrant devices, failure of the supply voltage or a line under voltage can cause a fuse to trip (commutation failure). This is a physical effect of the converter circuit that cannot be prevented by closed-loop control. Single-phase alternating current is fed to the field circuit and three-phase current to the armature circuit. It is not possible to operate the power section from a DC system. The SIMOREG 6RA70 can briefly be overloaded 1.8 fold if the device had previously been operated with a base-load current which is lower than the device rated current. If the device has been operated at rated current over a longer time it cannot be operated at overload. To avoid this, the thermal condition of the thyristors is calculated in the device to ensure the protection of the power semiconductors. Once the thermal limits are reached at overload, the current is automatically reduced to the rated current of the device or the device is switched off with an error message. The overload is configured using Catalog DA21 or the instruction manual.
  • Range of permissible rated voltage of the supply system: The range of the permissible input voltage depends on the rated supply voltage of the 6RA70 device. For line voltages of 480V / 500V / 575V, devices with a rated supply voltage of 575 V are used. The hardware option L04 is available for extra low voltages of 15 to 85 V input.

Rated line side voltage 6RA70 Rated voltage range of supply system:
  • Armature circuit 400V 85 - 415 V 3AC
  • Armature circuit 400/460575 V with option L04 15 - 85 V 3AC
  • Armature circuit 460 V 85 - 460 V 3AC
  • Armature circuit 575 V 85 - 575 V 3AC
  • Armature circuit 690 V 130 - 690 V 3AC
  • Field circuit 85 – 460 V 2AC

Sinamics DC Master 6RA80 converter:
  • The SINAMICS DC MASTER converter units have been specifically designed to supply the armature and field of variable-speed DC motors. Alternative applications (e.g. supplying the field of a synchronous generator) are also possible.
  • SINAMICS DC MASTER Converter units are compact units containing both the power unit for the armature supply and the power unit for the field supply, as well as the control electronics and possible additional modules. In the case of units with a 15 A to 1200 A rated DC current, the power units for the armature and field include electrically insulated thyristor modules, meaning that the heat sink is at ground potential. In units with a higher rated DC current, the power unit for the armature circuit includes disc-type thyristors and heat sinks (thyristor modules) at voltage potential. The units have degree of protection IP00. The connecting terminals are accessible from the front. The fan supply is fed in from the top; depending on the unit type, the field supply is either fed in from the top or the bottom.

All SINAMICS DC Master units are equipped with a Basic Operator Panel BOP20 in the front plate. The BOP20 can be used to:
  • Make all the settings that are required for commissioning
  • Display all relevant measured values
  • Display faults and alarms and acknowledge faults
  • Switch the drive on and off
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Approx. Rs 10,000  / Unit Get Latest Price

Product Details:
Output PowerDC
Rated Frequency50 Hz
Input PhaseSingle Phase
Input Voltage220 V
The DC Drive is a line-commutated converter which requires the line voltage to commutate the current, it is not possible to maintain the current flow on failure of the line voltage (e.g. on a short interruption).

Rated line side voltage 6RA70 Rated voltage range of supply system:
  • Armature circuit 400V 85 - 415 V 3AC
  • Armature circuit 400/460575 V with option L04 15 - 85 V 3AC
  • Armature circuit 460 V 85 - 460 V 3AC
  • Armature circuit 575 V 85 - 575 V 3AC
  • Armature circuit 690 V 130 - 690 V 3AC
  • Field circuit 85 – 460 V 2AC
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