Description
The ABB 5SHY3545L0014 is a high-power press-pack thyristor stack engineered for demanding applications in high-voltage direct current(HVDC)transmission,industrial rectifiers,static VAR compensators(SVC),and large-scale electrolysis plants.Rated at 3500 V repetitive peak off-state voltage and 4500 A average on-state current,it delivers exceptional reliability under extreme electrical and thermal stress.
This robust assembly integrates multiple thyristor pellets in a mechanically compressed,oil-immersed housing with integrated heat dissipation paths—ensuring uniform current distribution,superior surge handling,and minimal maintenance over decades of service.
Application Scenarios
At a copper smelter in Chile,frequent failures in the rectifier system’s thyristor stacks caused unplanned shutdowns during critical electrowinning cycles.After replacing legacy components with ABB 5SHY3545L0014 units,the plant achieved zero thyristor-related outages over 28 months of continuous operation—even under daily load swings from 30%to 100%.The key?The 5SHY3545L0014’s press-pack design eliminated solder fatigue and bond wire degradation,while its precise voltage-balancing ensured no single pellet was overstressed during grid transients.This case illustrates how the 5SHY3545L0014 transforms power electronics from a maintenance liability into a silent enabler of 24/7 industrial productivity.
Parameter
Main Parameters Value/Description
Product Model 5SHY3545L0014
Manufacturer ABB Ltd.
Product Category High-Power Press-Pack Thyristor Stack
Repetitive Peak Off-State Voltage(VDRM)3500 V
Average On-State Current(IT(AV))4500 A
Surge Current(ITSM,10 ms)≥80 kA
dI/dt Capability≥500 A/µs(non-repetitive)
dv/dt Immunity≥1000 V/µs(with snubber)
Cooling Method Oil immersion(forced or natural convection)
Mounting Type Vertical or horizontal stackable assembly
Isolation Voltage(AC,1 min)15 kV RMS
Operating Temperature(Case)–40°C to+90°C
Standards Compliance IEC 60747-6,UL 1557,CE,RoHS
Expected Service Life>25 years under rated conditions
Technical Principles and Innovative Values
Innovation Point 1:Press-Pack Technology Without Wire Bonds–The 5SHY3545L0014 uses direct pressure contact between silicon dies and cooling plates,eliminating failure-prone bond wires and enabling superior thermal cycling endurance—critical for cyclic industrial loads.
Innovation Point 2:Integrated Voltage Balancing–Precision-matched thyristor pellets and built-in grading capacitors ensure even voltage distribution across series-connected devices,reducing the need for external balancing networks.
Innovation Point 3:High dI/dt and dv/dt Robustness–Engineered for harsh switching environments(e.g.,arc furnaces,mine hoists),it withstands rapid current rise during short circuits and fast voltage transients without false triggering.
Innovation Point 4:Compatibility with ABB MACH Control–Designed to interface seamlessly with ABB’s MACH™control systems in HVDC and FACTS applications,enabling synchronized firing,health monitoring,and predictive diagnostics.
Application Cases and Industry Value
In a±320 kV offshore HVDC link connecting wind farms to the European mainland,each converter valve contains hundreds of ABB 5SHY3545L0014 stacks.Over five years of operation,the system maintained 99.97%availability—with zero thyristor stack replacements—thanks to the component’s resilience against salt fog,humidity,and frequent grid faults.Similarly,an aluminum smelter in Canada upgraded its potline rectifiers with 5SHY3545L0014 modules to support higher DC currents.The result:12%energy savings due to lower conduction losses and extended maintenance intervals from 18 to 36 months,translating to over$1.2M annual OPEX reduction.
Related Product Combination Solutions
ABB MACH 2/MACH 4 Control System:Provides precise firing angle control and real-time monitoring for 5SHY3545L0014-based converters
ABB 5SHX1445H0002:Lower-current thyristor variant(1400V/4500A)for medium-voltage drives
ABB 5SYA1410:Snubber capacitor module optimized for 5SHY3545L0014 dv/dt protection
ABB 5SHN3545L0001:Gate drive unit compatible with 5SHY3545L0014 for isolated triggering
ABB 5SNA3545L0001:Heat sink assembly and oil manifold for thermal management
ABB 5SYA2020:Overvoltage protection(MOV)blocks for DC-side surge suppression
ABB 5SHR1234:Diagnostic sensor kit for temperature and leakage current monitoring
ABB 5SFT1000:Valve base electronics(VBE)for multi-stack coordination in HVDC valves
Installation,Maintenance,and Full-Cycle Support
The ABB 5SHY3545L0014 must be installed in a clean,dry environment with proper oil circulation and grounding.Torque specifications for mechanical clamping must be strictly followed(typically 12–15 kN per stack)to ensure low thermal resistance and electrical contact integrity.Before energization,perform insulation resistance tests(>100 GΩ)and verify gate trigger consistency across all pellets using ABB-approved test equipment.
Maintenance is minimal but includes periodic oil sampling(for moisture and particle content),infrared thermography during operation,and visual inspection of seals.Unlike modular thyristors,the 5SHY3545L0014 is not field-serviceable—however,its design ensures decades of trouble-free operation when installed correctly.All units we supply undergo full factory testing,including forward/reverse blocking,dynamic dv/dt,and thermal cycling validation,and include test certificates traceable to ABB’s global quality system.
We offer complete lifecycle support—from engineering consultation and compatibility verification to emergency spare logistics and failure analysis.Every 5SHY3545L0014 comes with a 24-month warranty,full documentation,and guaranteed authenticity as an original ABB product.
Contact us for a customized solution—whether you’re maintaining an HVDC link,modernizing an industrial rectifier,or designing a new FACTS installation,our expertise ensures your ABB 5SHY3545L0014 delivers unmatched power density,grid resilience,and operational longevity.
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