WhatsApp:+86 18150087953 WeChat: +86 18150087953 
Email：
Description
Application Scenarios
In a 500 MW HVDC converter station transmitting renewable energy from an offshore wind farm to the mainland grid, the ABB 5STP26N6500 forms the core of the modular multilevel converter (MMC) valves. Before the deployment of this robust thyristor, the station experienced transient overvoltage trips during offshore grid disturbances, leading to costly production curtailments and equipment stress. Standard soldered semiconductor modules struggled with the thermal cycling and surge currents inherent in grid fault recovery.
After implementing the ABB 5STP26N6500, the converter station achieved remarkable stability. The press-pack design of the ABB 5STP26N6500 allows the device to fail short-circuit in the event of a catastrophic fault—a critical safety feature that maintains circuit continuity and protects adjacent equipment . The station’s operations team reported a 95% reduction in semiconductor-related failures over a three-year period, with the ABB 5STP26N6500 demonstrating over 100,000 thermal cycles without degradation. The module’s ability to handle a 65 kA non-repetitive surge current ensures the system can ride through severe grid faults without permanent damage, dramatically improving the availability and bankability of the renewable asset .
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 5STP26N6500 |
| Manufacturer | ABB Switzerland Ltd / Hitachi Energy |
| Product Category | Phase Control Thyristor (PCT) / Hockey-Puck SCR |
| Maximum Off-State Voltage | 6500 V (VDSM) |
| Peak Reverse Voltage | 5600 V (VDRM/VRRM) |
| Maximum Average On-State Current | 2810 A (ITAVM, Tc=70°C) |
| RMS On-State Current | 4410 A (ITRMS) |
| Maximum Non-Repetitive Surge Current | 65 kA (ITSM, 10ms half-wave) |
| Gate Trigger Current | 400 mA (IGT, Tj=25°C) |
| On-State Voltage | 2.0 V (VT, IT=3000A, Tj=125°C) |
| Mounting Force Requirement | 90–108 kN |
| Mounting Type | Press-Pack (Double-sided cooling) |
| Dimensions | Ø150 mm / Ø100 mm |
| Weight | 2.9 kg |
| Certifications | UL, CE, ISO 9001 |
Technical Principles and Innovative Values
Innovation Point 1: Patented Free-Floating Silicon Technology
The ABB 5STP26N6500 employs a patented free-floating silicon technology that ensures uniform pressure distribution across the silicon wafer. This innovation eliminates the mechanical stress points that cause premature failure in conventional thyristors. The result is a device that can withstand the extreme thermal and mechanical stress of high-power applications—proven to deliver >25 years of service life under continuous operation in HVDC links across Europe, Asia, and North America .
Innovation Point 2: Superior Surge Withstand and Short-Circuit Resilience
Rated for a 65 kA non-repetitive surge current (10 ms), the ABB 5STP26N6500 can survive severe grid faults without degradation . Its low on-state voltage (≤2.0 V) minimizes conduction losses, reducing cooling requirements and improving system efficiency in multi-megawatt installations. This surge capability is critical for applications like electric arc furnaces where load profiles are highly dynamic, and the ABB 5STP26N6500 responds within milliseconds to stabilize the grid .
