ABB 5SHY35L4510 IGCT Thyristor for Medium Voltage Drives

Description

Key Technical Specifications

• Repetitive Peak Off-State Voltage (VDRM): 4500 V (gate unit energized)
• Turn-Off Current (ITGQM): 4000 A (snubberless)
• Surge Current (ITSM): 32,000 A (non-repetitive)
• DC-Link Voltage (100 FIT): 2800 V (cosmic radiation at sea level)
• On-State Threshold Voltage V(T0): 1.4 V
• On-State Slope Resistance rT: 0.325 mΩ
• Mounting Force: 36–44 kN (min 36 kN, typ 40 kN)
• Pole-Piece Diameter: 85 mm ±0.1 mm
• Housing Thickness: 25.3–25.8 mm (typ 26 mm)
• Weight: 2.9 kg
• Operating Temperature Range: Wide (optimized for -40 to +85 °C junction in qualified setups; verify heatsink)
• Frequency Optimization: Medium (<1 kHz)
• Gate Unit: Integrated with status feedback, AC/DC supply

Product Introduction

The ABB 5SHY35L4510 is an asymmetric integrated gate-commutated thyristor (IGCT/GCT) designed for high-power medium-voltage applications like voltage source inverters (VSI) and current source inverters (CSI) in drives, traction, and industrial power conversion. It handles 4500 V blocking and snubberless turn-off up to 4000 A, making it suitable for MV drives in metals, mining, and marine sectors.

This device excels with high electromagnetic immunity, simple gate control, and reliability in harsh environments. Systems use it for its low conduction losses and fast switching without external snubbers, reducing component count compared to older GTO-based designs while maintaining backward compatibility in many ABB ACS1000/ACS2000 series converters.

5SHY35L4510

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (15–20 minutes) ⚠️ Safety First: Lock out/tag out all medium-voltage sources. Discharge capacitors fully (wait per drive manual, often 10+ minutes). Use appropriate PPE for MV work. Verify zero energy on press-pack contacts. Tools Required: Grounded ESD strap, torque wrench (for clamping), multimeter, infrared thermometer, smartphone for photos, cleanroom gloves. Data Backup: Document existing clamp force readings, gate unit connections, and heatsink mounting. Photograph press-pack orientation and any series/parallel arrangements.

Stage 2: Removing the Old Device (10–15 minutes)

1. Confirm isolation and discharge.
2. Disconnect gate unit cables carefully (label polarity).
3. Loosen clamping bolts evenly in cross pattern to release mounting force gradually.
4. Remove the IGCT straight from the heatsink stack—avoid tilting to prevent surface damage.
5. Inspect pole pieces for scratches, arcing, or contamination; clean only with approved solvent if needed. ⚠️ Note: Handle by edges only. Keep old device on ESD surface for reference and failure analysis if required.

Stage 3: Installing the New Device (15–25 minutes)

1. Ground via ESD strap. Verify replacement is exactly 5SHY35L4510 (check markings).
2. Configuration Clone (Crucial): No DIP switches; ensure gate unit compatibility (firmware if applicable). Clean contact surfaces. Apply thin thermal compound if specified by ABB.
3. Position in stack with correct orientation (anode/cathode). Apply even mounting force: torque bolts to achieve 40 kN typ (use force gauge or ABB jig).
4. Reconnect gate unit cables securely. Self-Checklist: [ ] Force 36–44 kN verified, [ ] Contacts clean and aligned, [ ] Gate wiring correct, [ ] No tilt in stack.

Stage 4: Power-On & Testing (20–40 minutes) Pre-Power Check: Measure insulation resistance (>100 MΩ typical) and continuity across device. Power-On Steps:

1. Energize low voltage first for gate unit check.
2. Power up drive in test mode; monitor status feedback from gate unit.
3. Perform step tests at low current; observe turn-on/turn-off waveforms if oscilloscope available.
4. Ramp to full voltage/current; check for even current sharing in paralleled setups.
5. Run thermal imaging after load cycles. ⚠️ Troubleshooting Note: Gate unit no feedback? Check supply voltage and connections. Overvoltage trips? Verify clamp force and heatsink contact. Uneven heating often means poor mounting—re-clamp immediately.

Frequently Asked Questions (FAQ)

Is the 5SHY35L4510 hot-swappable? No. Medium-voltage press-pack devices require full shutdown, discharge, and clamp release. Attempting live swap risks catastrophic failure or arc flash.

Is this model obsolete, and is the stock genuinely new? As of March 2026, 5SHY35L4510 remains a legacy IGCT type supported via spares for installed MV drives (e.g., ACS series). Stock is new surplus from OEM channels or decommissioned equipment—traceable, anti-counterfeit verified (serial/hologram checks), and tested on ABB-compatible setups with 24+ hour burn-in. Test reports and photos available.

What is the direct replacement if this is out of stock? ABB may offer newer IGCT variants (e.g., 5SHY series successors like 5SHYxxLxxxx for higher ratings or improved efficiency). Consult latest ABB semiconductor selector or drive manual for exact match—do not substitute without verifying VDRM/ITGQM and gate unit compatibility to prevent failures.

Will swapping affect drive parameters or control logic? No—the device is a passive power semiconductor; parameters live in the drive controller. Swap preserves firmware/settings. Re-verify gate unit status and current sharing after install.

Why is the price lower than ABB direct list? Genuine new surplus from excess production or retired systems—no refurbishing. Units pass full QC: visual inspection, Megger testing (>10 MΩ), clamping force verification, and functional gate trigger simulation. Same electrical performance, with our 1-year warranty.

Does this support series connection or special cooling? Yes—designed for series strings in high-voltage applications (consult ABB for voltage derating). Requires forced-air or liquid cooling per datasheet thermal limits. High snubberless rating suits most VSI/CSI without extra components, but verify application-specific dv/dt and di/dt.