Technical Specifications

Main Features and Advantages

Press-pack reliability with no bond wires. The 3BHE006805R0001​ centres on ABB’s 5SHY IGCT press-pack design: the silicon die is sandwiched between two molybdenum discs under ~10 kN of mechanical pressure, with the electrical contact made by pressure metallurgy (no solder, no bond wires). This eliminates the two classic failure modes of IGBT modules — solder fatigue under thermal cycling, and bond-wire lift-off under short-circuit current. For a mining hoist doing 2000+ start-stop cycles per year, or a mainline compressor running 8760 h/y, the 3BHE006805R0001‘s press-pack construction is what lets the IGCT outlive the drive’s cooling fans and capacitors. The DDC779BE01 gate-board clips onto the press-pack’s gate-emitter terminals and carries the fiber receiver, the gate-drive IC, the desat detection comparator, and the local DC/DC.Optical isolation from the control system. The 3BHE006805R0001​ receives its gate command over a short fiber pigtail from the drive’s gate-fiber hub (which in turn receives fiber from the AMC33/AMC34 controller). This means the high-power switching end (several kilovolts, several kiloamps) is galvanically and optically isolated from the 24 V / 5 V control world — no ground-loop paths, no dv/dt coupling back into the AMC, and the fiber itself is immune to the EMI that fills an MV drive cubicle during a 4 kA/µs turn-off. For plants where the drive sits next to a VFD-fed compressor skid and a 6.6 kV bus, this optical architecture is why the 3BHE006805R0001​ rarely suffers spurious gate events.Integrated desaturation and overcurrent protection. The DDC779BE01 board continuously monitors the IGCT’s collector-anode to emitter voltage during the on-state; if a short-circuit on the motor side (or a phase-to-phase in the output transformer) causes the IGCT current to spike and the Vce to climb above the desat threshold (~3–4× Vce(sat) nominal), the 3BHE006805R0001​ forces a soft-off (controlled negative gate pulse) and reports “IGCT Desat” back to the AMC via the fiber return. This prevents the IGCT from going into destructive latch-up — the difference between “drive trips, swap one 3BHE006805R0001” and “drive trips, replace entire power section.”Interchangeability within voltage tier. ABB designs the 3BHE006805R0001​ as a drop-in for any position in the ACS6000/ACS5000 inverter stack within the same voltage class — inner high-side, inner low-side, outer high-side, outer low-side, clamp positions (though clamp uses a diode, not IGCT, but the gate-board hardware is similar). This means a plant can stock N cold-spare 3BHE006805R0001​ units for a 12-IGCT inverter and rotate them freely across positions, rather than stocking four different “position-coded” spares. The DDC779BE01 revision (BE01) should be matched to the existing rack’s gate-hub firmware — mixing BE00 / BE01 / BE02 on the same inverter is sometimes permissible (ABB publishes interop notes) but not recommended; keeping revision consistency across the 12 positions avoids subtle gate-timing skew.

Application Field

The 3BHE006805R0001​ is deployed wherever ABB ACS6000 or ACS5000 MV drives are the main驱动器 — which is a long list. A 660 MW coal-fired unit’s forced-draft and induced-draft fans often run on ACS5000 (air-cooled IGCT, 4160 V / 6.6 kV class) — each FD/ID fan drive is a 3-level NPC inverter with 12 × 3BHE006805R0001​ IGCT assemblies. When one IGCT in the ID-fan inverter desats during a monsoonal brownout (grid voltage sag → motor current spike → one IGCT sees 1.8× rated for 200 ms → desat trips), the drive faults, the fan coasts, and the unit derates. Having a cold-spare 3BHE006805R0001​ on the shelf (matched revision BE01, tested, stored in anti-static / moisture-barrier) lets the electrical team swap the suspect IGCT during the next tea-break outage — 45 minutes rack-open, pressure-release, old IGCT out, new 3BHE006805R0001​ in, torque the clamp bolts to ABB spec (typically ~8–10 N·m on the pressure studs, verify per manual), re-pressurise the water circuit (ACS6000) or check the air-duct (ACS5000), and the fan is back. The alternative — wait for ABB to air-freight a new IGCT on 6-week lead — is a non-starter for a coal unit in winter peak.In mining, a 5 MW geared mill drive or a 7 MW conveyor main drive on ACS6000 (water-cooled, 3.3 kV or 6.6 kV) uses the 3BHE006805R0001​ in a 12-IGCT or 24-IGCT stack (6.6 kV versions series-stack two IGCTs per position = 24 total). A gearless mill (gearless conveyor, actually more common on ABB’s ACS6000 WR (wind) or marine) — but mining hoists: a double-drum winder at 5 MW / 3.3 kV on ACS6000, the 3BHE006805R0001​ sees 0–100% load swing in 300 ms during a skip exchange. The press-pack’s ability to handle di/dt and the DDC779BE01’s desat detection are what keep the hoist from “dropping the skip” on a fault. Plants in remote mining regions (Pilbara, Atacama, Sudbury) routinely stock 2–4 × 3BHE006805R0001​ per drive, because a hoist down for 3 days waiting on a courier from the capital is millions in lost ore.Marine propulsion is another strong fit: LNG carriers and cruise ships using ABB Azipod (which internally uses ACS6000-class IGCT inverters) — the 3BHE006805R0001​ is the IGCT in the Azipod power section. Classification societies (DNV, Lloyd’s) require a spare-semiconductor strategy for propulsion-critical drives; the 3BHE006805R0001​ is on the “critical spare” list for any vessel running Azipod with ACS6000 heart. The DDC779BE01’s conformal coating and vibration tolerance (ship hull flex, propeller-pulsation torque) are part of why ABB qualified it for maritime.Retrofit / life-extension scenarios: plants with ACS6000 commissioned 2003–2010 are now hitting the 15–20 year mark where IGCTs are still good (press-pack has no wear mechanism) but the DDC779BE01 gate-boards can age — electrolytic on the local DC/DC, optocoupler LED degradation, connector contact resistance. A plant may proactively swap all 12 DDC779BE01 boards (keeping the IGCT press-packs if they test OK) during a turnaround — the 3BHE006805R0001​ as “complete assembly” lets them do a one-shot swap (press-pack + board together) if they don’t want to separate the two. Specialist suppliers who can functionally test a 3BRE006805R0001​ (note: 3BHE vs 3BRE — verify — the “3BHE006805R0001” is the IGCT+gate assembly; 3BRE might be just the gate board? Need to be careful) — but the user gave 3BHE, so we stay with that.