ABB 3BHB015651P0001 AVX TPC Capacitor DKTFM418B ACS6000 System
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Product origin New/used
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The ABB 3BHB015651P0001 (matching model DKTFM418B) is a core high-voltage film c
The ABB 3BHB015651P0001 (matching model DKTFM418B) is a core high-voltage film capacitor component in the capacitor bank unit (CBU) of the ACS6000 medium-voltage drive system. It is used for DC bus voltage regulation, harmonic suppression, and energy buffering, suitable for 3.3 kV high-power drive scenarios, ensuring stable operation of the ARU/INU modules.
Core Positioning and Functions
As a key component of the ACS6000 CBU, this capacitor is responsible for stabilizing the DC bus voltage, filtering high-frequency ripple, and providing rapid power support under energy recovery and dynamic loads. It acts as a "voltage stabilizer" for the power unit of the medium-voltage inverter. Its model number 3BHB015651P0001 is the original ABB order number, DKTFM418B is the matching package/version identifier, and AVX TPC indicates the use of AVX high-performance film capacitor technology, suitable for harsh industrial environments.
Key Technical Parameters (Industry-Standard Measured Values)
Rated Capacitance: 21600 µF (Measured Value from Mainstream Suppliers)
Rated Voltage: 2866 V DC (Compatible with ACS6000 Bus Voltage Rating)
Capacitor Type: High-voltage film capacitor (low loss, long life, surge resistant)
Operating Temperature: Industrial-grade wide temperature design (-25°C to +85°C, subject to original manufacturer's specifications)
Compatible System: ABB ACS6000 medium-voltage drive (3–27 MW, 2.3–3.3 kV)
Application Unit: CBU (Capacitor Bank Unit), working in conjunction with charging unit, discharge switch, and grounding switch
System Integration and Application Scenarios
System Location: Installed in the ACS6000 CBU cabinet, serving as the core energy storage element of the DC bus, connecting the Active Rectifier Unit (ARU) and the Inverter Unit (INU).
Core Functions: Maintains bus voltage after the main circuit breaker is turned off, suppresses ripple generated by commutation of switching devices, achieves energy decoupling between rectification and inversion, and ensures stable operation of IGCT power devices.
Typical Scenarios: High-power, high-reliability drive scenarios such as ship propulsion and offshore platforms, rolling mills and large-scale mining grinding mills, and high-pressure fans/pumps and compressors.
Maintenance and Replacement Points
Replacement Prerequisites: Only operate after the CBU is de-energized and the capacitors have been discharged. The grounding switch must be in a grounded state. Replacement while the circuit is energized is strictly prohibited.
Replacement Steps: Remove the old capacitor → Clean the mounting surface → Tighten the new capacitor to the original torque → Connect the bus and grounding → Check insulation and capacity before powering on → Perform no-load test before commissioning.
Lifespan and Warnings: Long-term high temperature, voltage fluctuations, or excessive ripple will accelerate degradation; if capacity decreases, leakage current increases, or the casing bulges, it must be replaced immediately to avoid damaging the power unit.
Compatibility: ABB original or certified alternative parts must be used to ensure that the voltage rating, capacity and ripple characteristics are matched. Non-original parts may cause bus instability or device failure.
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