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VPSTB570-600-70

The ABB VPSTB570-600-70 is an external, cabinet-mounted Brake Chopper Module (also known as a braking unit or brake IGBT) designed for use with ABB drives, particularly the ACS880 and ACS580 multi-drive (common DC bus) systems.

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Key Parameters Parameter Category Specification Product Type Brake Chopper Module (External Braking Unit) ABB Series / Model VPSTB570-600-70 Nominal DC Link Voltage 600 V DC Maximum Continuous Braking Current 70 A Maximum Peak Braking Current Typically 150-200% of continuous current for short durations (e.g., 140 A). Refer to datasheet for exact values. Control / Activation Monitors DC bus voltage. Turns ON when voltage exceeds a preset threshold (typically ~760-780V for a 600V system) and turns OFF when it drops below a reset level. Power Connection Connects in parallel to the drive's DC bus (+ and - terminals). Resistor Connection Output terminals for connecting an external braking resistor. The resistor must be sized separately based on the application's braking power and duty cycle requirements. Key Features • Designed for use with ABB ACS880 and compatible multi-drive systems. • Provides overvoltage protection for the entire DC bus system. • Compact module for cabinet installation. • Includes status indicators and fault signals. Main Protection • Thermal overload protection for the IGBT. • Short-circuit protection for the braking resistor circuit. Typical Mounting Cabinet mounting (IP00). Requires integration into a suitable electrical enclosure. Core Application Safely dissipating regenerative braking energy in variable speed drive systems with frequent stopping, deceleration, or overhauling loads.