ABB

Main Functions

1. Unidirectional phase‑angle power regulation: Conduct only under forward anode bias, activated by gate trigger pulse. Realize continuous adjustment of output voltage and power for AC‑DC conversion. Turn‑off is achieved by natural grid current zero‑crossing, no gate‑forced turn‑off capability.
2. High‑power rectification: Convert alternating‑current input into adjustable direct‑current output. Maintain large load current with low on‑state voltage drop and low conduction loss after gate triggering.More products: www.plcva.com
3. High surge‑current withstand capability: Tolerate large short‑time surge current during system transients. Possess high dv/dt and di/dt immunity to avoid false triggering under heavy electromagnetic interference conditions.
4. Series‑parallel expandability: Well‑matched static and dynamic parameters support multi‑device series connection for higher blocking voltage or parallel connection for larger output current, satisfying ultra‑high‑power converter requirements.
5. Dual‑side thermal dissipation: Adopt press‑pack floating silicon structure, support double‑sided cooling. Low thermal resistance, excellent power‑cycle performance and thermal‑shock resistance for long‑term stable operation under frequent temperature cycling.
6. Optimized gate performance (suffix‑G version): Improved gate‑trigger uniformity across silicon wafer, lower gate‑power requirement, reduce local hot‑spot risk during high‑current turn‑on.

ABB YST 45‑27 P42G Unidirectional Press‑Pack Thyristor (SCR)

Typical Applications

1. Static Var Compensator (SVC): Grid reactive‑power compensation, stabilize power‑system voltage, mitigate voltage flicker for metallurgical, mining and heavy‑industrial sites.
2. High‑power industrial rectifier systems: Electrolysis power supply for aluminium smelting, chlor‑alkali chemical electrolysis, DC arc furnaces and induction heating equipment.
3. Line‑commutated HVDC converter valves: High‑voltage direct‑current power transmission and bulk‑energy delivery projects.
4. Heavy‑duty DC motor drives: Speed regulation for rolling mills, mine hoists and large‑capacity industrial traction equipment.
5. Synchronous generator excitation systems: Supply adjustable DC excitation current for large‑scale generators in power plants.
6. High‑voltage motor soft‑start units: Limit inrush starting current, reduce impact to power grid during motor startup.
7. Retrofit & spare‑part replacement: Widely used as aftermarket spare component for existing ABB high‑power converter cabinets, legacy power‑semiconductor replacement for running industrial installations.

ABB YST 45‑27 P42G Unidirectional Press‑Pack Thyristor (SCR)

Understand the lowest price, please contact via email: plcvarious@foxmail.com

More products: www.plcva.com

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