V30812-A5020-A6 SIEMENS

V30812-A5020-A6 Siemens Basis unit

Brand：SIEMENS Model number：V30812-A5020-A6

Country of origin: Germany Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

The V30812-A5020-A6 is a high-performance power semiconductor module designed for heavy-duty industrial applications. It functions as a controlled switch within a power converter, allowing for the precise regulation of electrical power to DC motors or other industrial loads. It is built using advanced silicon-controlled rectifier (SCR) technology, featuring a robust housing that provides both electrical isolation and efficient thermal dissipation. This specific part number often corresponds to replacement components or sub-assemblies within Siemens large-scale power stacks.

Product Parameters

Component Type: Thyristor / Diode Power Module.
Voltage Rating: Typically rated for high-voltage industrial grids, often supporting peak repetitive reverse voltages ( $V_{RRM}$ ) up to $1600 \text{V}$ or $2200 \text{V}$ depending on the specific system configuration.
Current Capacity: Designed for high-capacity throughput, frequently found in systems ranging from several hundred to over a thousand Amperes ( $A$ ).
Cooling Requirement: Requires integration with a heat sink, often utilizing forced air or liquid cooling systems to manage thermal output.
Control Interface: Triggered via gate leads connected to the drive's firing pulse transformer board.
Housing: Encapsulated in an industrial-grade ceramic or composite housing to ensure dielectric strength and mechanical stability under high thermal cycling.

Product Advantages

Industrial Durability: Engineered to withstand the rigorous demands of 24/7 industrial operations with high reliability and a long service life.
High Thermal Efficiency: The module is designed with a low thermal resistance baseplate, ensuring that heat is quickly transferred to the cooling system, which prevents overheating during peak loads.
Precise Power Control: Offers excellent switching characteristics, allowing for smooth and accurate speed/torque control when used in DC drive applications.
Integration Ease: Specifically designed for Siemens power stacks, ensuring a perfect mechanical and electrical fit without the need for custom mounting modifications.

Precautions for Use

Qualified Personnel Only: Installation and maintenance must only be performed by technicians trained in high-power electronics and Siemens drive systems.
Electrostatic Discharge (ESD): Use proper ESD protection when handling the module, as the gate terminals are sensitive to static electricity.
Thermal Compound Application: When mounting to a heat sink, a specific thickness of thermal interface material (grease) must be applied evenly to ensure proper heat transfer.
Tightening Torque: Mounting screws and terminal bolts must be tightened to the exact Newton-meter ( $Nm$ ) torque specifications provided in the technical manual to avoid mechanical stress or poor electrical contact.
Voltage Verification: Ensure the system is completely de-energized and capacitors are discharged before attempting to replace or inspect the module.

Product Applications

The Siemens V30812-A5020-A6 is primarily utilized in sectors requiring high-power motor control and energy management.

DC Drive Systems: Integral to the Siemens SIMOREG 6RA70 and 6RA24 series converters used to control DC motors in steel mills, paper plants, and mining hoists.
Electrochemical Processes: Used in large-scale rectifiers for plating, electrolysis, and aluminum smelting where stable high-current DC power is required.
Power Supplies: Found in high-power industrial UPS systems and specialized laboratory power supplies.
Renewable Energy: Applied in certain types of power converters for older wind turbine systems or grid-tie inverters that require robust thyristor-based switching.

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