Manufacturer: ABB Part number: ABB 216EA61B HESG448230R1-G
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216EA61B: Product OverviewThe 216EA61B is a high-power thyristor (silicon controlled rectifier) module from ABB’s power semiconductor portfolio, designed for the most demanding applications in high-voltage power electronics. This device functions as a solid-state switch capable of controlling megawatt levels of electrical power. It is a core component in HVDC (High Voltage Direct Current) transmission systems, where it performs AC/DC and DC/AC conversion, and in large static VAR compensators (SVCs) used for grid voltage stabilization and reactive power control. The module is engineered for series and parallel stacking to achieve the extremely high voltage and current ratings required for utility-scale power conversion.The thyristor operates as a latching switch—once triggered into the “on” state by a gate pulse, it remains conducting until the current through it drops to zero. This characteristic makes it ideal for phase-controlled rectification and inversion. The module utilizes a press-pack housing, which allows for double-sided cooling and enables robust mechanical clamping when multiple devices are stacked in series. This design is critical for handling the extreme electrical and thermal stresses encountered in HVDC valve halls and large industrial drives, offering a failure mode that defaults to a short circuit, which is a critical safety feature in series-stacked applications.
ABB 216EA61B HESG448230R1-G
216EA61B: Technical Specifications
•• Model Number: 216EA61B
•• Order Number: HESG448230R1-G
•• Manufacturer: ABB
•• Product Type: Press-Pack Thyristor
•• Collector-Emitter Voltage (Vces): Very High Voltage (VHV) class, typically several kilovolts (exact rating depends on the specific variant)
•• Nominal Current (Ic): High current rating, typically in the kA (kiloampere) range
•• Maximum Junction Temperature (Tj): 125 °C (typical)
•• Package Type: Press-Pack (Press-Fit)
•• Cooling Method: Double-sided liquid cooling (direct water or glycol cooling)
•• Gate-Emitter Voltage (Vges): Typically ±20V (requires external Gate Unit)
•• Application: HVDC Valves, SVCs, Large Industrial Drives
ABB 216EA61B HESG448230R1-G
Core Features & Customer ValueThe press-pack design with double-sided cooling provides superior thermal performance, enabling higher power density and more compact converter designs compared to single-sided cooling modules. For system designers, this translates to a reduced physical footprint and improved overall system efficiency. The most critical feature is its “fails-to-short” mode. In a series stack of hundreds of devices (like an HVDC valve), if one thyristor fails, it becomes a short circuit. This allows the current to bypass the failed device, preventing a catastrophic overvoltage on the remaining units and enabling the system to continue operating at a slightly reduced capacity until the next scheduled maintenance, maximizing availability.The extremely high voltage and current ratings allow these devices to handle power flows equivalent to large cities. For utility engineers, this unparalleled reliability and power handling are paramount for the stability of national power grids and interconnectors. The robust construction ensures a long service life with minimal degradation, even under severe electrical and thermal cycling, which is a significant factor in the total cost of ownership for large power conversion facilities.Typical ApplicationsIn HVDC transmission systems, hundreds of 216EA61B thyristors are stacked in series to form a single valve capable of blocking several hundred kilovolts. These valves are the heart of converter stations that transmit gigawatts of power over long distances with minimal losses, interconnecting asynchronous power grids or bringing power from offshore wind farms to shore.In large Static VAR Compensators (SVCs) installed at strategic points in the electrical grid, these thyristors switch capacitor banks and reactors in and out of the circuit with millisecond precision. This provides dynamic reactive power support, stabilizing grid voltage and increasing transmission capacity.
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