Product Introduction

Model Interpretation

• 5S: ABB high-power semiconductor product line

• GY: Asymmetric IGCT with unidirectional switching

• 55: 5500 A class current rating

• L: Low-loss optimized version

• 4500: 4500 V repetitive peak blocking voltage

  This is a high-current, medium-frequency optimized base variant.

Technical Parameters

• Repetitive peak blocking voltage (VDRM): 4500 V

• Permanent DC voltage (VDC): 2800 V

• Max continuous on-state current (ITGQM): 5000 A

• Peak surge current (ITSM): 33 kA

• Typical on-state voltage drop (VT0): 1.22 V

• On-state resistance (rT): 0.28 mΩ

• Max switching frequency: up to 1000 Hz (medium-frequency optimized)

• Operating junction temperature: −40 °C to +125 °C

• Storage temperature: −40 °C to +85 °C

• Cooling: deionized water-cooled baseplate

• AC insulation (main terminals): 12 kV

• Mounting clamping force: 36–44 kN

• Weight: approx. 4.2 kg

Interface and Communication Configuration

• Integrated gate drive with fiber-optic control interface, offering high electromagnetic interference immunity

• Main power terminals: large copper busbars for low-resistance, high-current connections

• Water-cooled baseplate for efficient heat dissipation

• Built-in temperature and current sensors for real-time status monitoring and fault diagnosis

• Status feedback via fiber optics for system control and protection

• Gate unit supply: AC square wave or DC input

Core Functions

• Provides stable 4500 V / 5000 A high-power switching for medium-voltage conversion systems

• Ultra-low conduction and switching losses enhance overall system energy efficiency

• Snubberless fast turn-off capability simplifies peripheral circuit design

• Rugged press-pack structure ensures long-term stable operation under harsh industrial conditions

• Optimized for medium frequencies (<1 kHz), ideal for high-power dynamic applications

• High cosmic radiation withstand rating for grid-critical installations

Application Scenarios

• Medium-voltage variable frequency drives (e.g., ABB ACS6000 series)

• Static Var Compensators (SVC) and STATCOM for grid power quality regulation

• Wind turbine converters and high-power photovoltaic inverters

• HVDC Light transmission systems

• Heavy industries: power generation, metallurgy, mining, oil and gas

Operation and Maintenance Instructions

• Mount the module on a water-cooled heat sink with a clamping force of 36–44 kN

• Connect main terminals with professional high-current busbars; use dedicated fiber-optic cables for gate signals

• Maintain the cooling system with qualified deionized water at stable flow and pressure

• Conduct quarterly inspections of appearance, electrical connections, and cooling system performance

• Before disassembly or replacement, fully de-energize the system and discharge residual voltage

• Handle with anti-static protection to avoid electrostatic discharge damage