VACON NXP04605-A5L0SSB-A1A2000000 AC 6-Pulse Variable Frequency Drive 460A 380-500V Liquid Cooled VFD with Braking Chopper

　　VACON NXP04605-A5L0SSB-A1A2000000 is a high-performance,enclosed Liquid Cooled VFD(Variable Frequency Drive)engineered for heavy industrial motor control.This Liquid Cooled VFD,based on the NXP common DC bus architecture,is configurable as a Braking Chopper Inverter to manage regenerative energy in multi-drive systems.Designed for marine,offshore,mining,and other harsh environments,it operates at 460 A in a 380-500 VAC supply range.

　　What Is a Liquid Cooled VFD with Braking Chopper Inverter?

　　A Liquid Cooled VFD is an AC drive that uses a circulating coolant to dissipate heat from its power electronics,eliminating the need for large airflow systems.This enables compact,fully enclosed drive designs with high ingress protection,suitable for the dirtiest,hottest,and most corrosive industrial environments where air-cooled drives would fail or require extensive air conditioning.A Braking Chopper Inverter is a specific power converter unit used within a common DC bus drive system.It regulates the DC bus voltage by switching excess regenerative energy from braking motors to an external resistor bank,where it is safely dissipated as heat.The VACON NXP04605 can be configured as a Braking Chopper Inverter(NXB),an independent inverter(NXI),or a combination unit,offering centralized energy management for multi-drive systems in demanding sectors like maritime and metals.

　　Key Specifications

　　Product Type:Liquid-Cooled Common DC Bus Drive(Configurable as Inverter or Brake Chopper)

　　Model Code:NXP04605-A5L0SSB-A1A2000000(Per manufacturer product configurator)

　　Compatible System Types:NXI(Inverter),NXB(Brake Chopper)

　　Supply Voltage Range:380-500 VAC(–10%…+10%);465-800 VDC(–0%…+0%)

　　Rated Current(I_H):460 A(Heavy-duty)

　　Maximum Short Circuit Current Rating:<100 kA

　　Output Voltage(U_out):0 to U_in

　　Output Frequency:0-320 Hz(Standard);up to 7200 Hz(With special software)

　　DC Bus Capacitance(500 V class):32400μF

　　Switching Frequency(Default):3.6 kHz(Derating required above this value)

　　Enclosure Ingress Protection:IP54/NEMA 12

　　Control Method:Frequency(U/f),Open Loop Vector,Closed Loop Vector

　　Cooling Method:Liquid(requires external cooling plate and heat exchanger)

　　EMC Compliance:IEC 61800-3,standard environment

　　Functional Safety Suitability:Configurable for Safe Torque Off(STO)and Safe Stop 1(SS1)via options

　　Key Certifications&Approvals:CE,cULus,marine classification capability available(per model code)

　　Technical Highlights

　　True closed-loop process control is achieved through the NXP platform.The drive supports induction and permanent magnet motor types with a 0-320 Hz standard output range,maximizing machine productivity by providing high breakout torque at zero speed and precise dynamic speed regulation under changing load conditions.Its flexibility as a braking chopper inverter within a common DC bus system is a significant advantage.One long-tail question engineers ask,"How does a brake chopper prevent overvoltage trips?",can be directly answered:by precisely monitoring the DC link and pulsing the external resistor to dissipate excess energy,keeping the voltage stable during heavy deceleration of connected drives.

　　The liquid-cooled design drastically reduces panel footprint.By removing airflow dependencies and large heat sinks,a typical 1.5 MW VACON NXP motor drive line-up can fit within an 800 mm wide cabinet,saving up to 70%in floor space compared to air-cooled alternatives.This dense packaging also enables advanced harmonic mitigation,with the base 6-pulse unit utilizing an integrated choke.For systems requiring lower total harmonic distortion(THD),the drive can be specified as a 12-pulse or even 18-pulse unit for the largest CH74 frame sizes,reducing demand on upstream filters.

　　The liquid coolant loop captures and transports over 95%of total energy losses to a remote liquid-to-liquid or liquid-to-air heat exchanger,per manufacturer data.This thermal management strategy allows the NXP04605 to deliver 100%rated current without derating up to 40°C coolant temperature and maintain high component reliability with less than 5%of heat loss emitted into the ambient air,which eliminates the need for large electrical room air conditioners and ensures virtually silent operation.

　　Applications

　　Marine propulsion and thrusters:The IP54 enclosure and liquid cooling make it suitable for machinery spaces,where it provides precise speed control and overload capability for main propulsion motors and side thrusters,improving vessel maneuverability and dynamic positioning.

　　Offshore platform winches and cranes:Its braking chopper function manages regenerative energy during load lowering or dynamic braking,dissipating excess power in external resistors to prevent DC bus overvoltage trips on generator-supplied island networks.

　　Metal mill processing lines:Configured as a common DC bus inverter,it powers roller table motors and coilers in steel and aluminum processing lines.Sub-millisecond torque response from the closed-loop vector control minimizes strip tension deviations,preventing scrap and improving product consistency.

　　Mining conveyors and crushers:The fully enclosed,dust-tight IP54 design protects internal electronics from conductive coal dust and mineral particles.The drive delivers high starting torque for loaded belt conveyors and provides controlled braking for downhill conveyors.

　　Power generation and test benches:Used as a bidirectional inverter or brake chopper,it absorbs generated power from turbines or engines under test,feeding it back to the common DC bus or dissipating it in resistors,thus enabling energy recovery in high-power test cell applications.

　　Selection Guidance

　　This drive is suitable for new installations where floor space is at a premium and air conditioning costs must be minimized,such as on offshore platforms or modern container vessels.

　　This drive is suitable for multi-motor,common DC bus line-ups where centralized energy sharing and regenerative braking management improve overall system efficiency.

　　This drive is not suitable for single-motor stand-alone use where a standard AC line supply feeds only one motor and there is no DC bus system.For such applications,select a standard VACON NXP enclosed air-cooled or liquid-cooled stand-alone drive.

　　This drive is not suitable for applications where the installation environment cannot provide a clean,controlled coolant supply loop.The unit requires an external liquid cooling source with specified temperature,pressure,and coolant quality,adding system complexity not present in air-cooled solutions.

　　Beyond the NXP04605 detailed here,we also supply additional factory-configured models from the same liquid-cooled NXP common DC bus series,spanning a range that delivers low-overload power from 200 kW to 250 kW with low-overload continuous current from 385 A to 520 A,and high-overload power from 160 kW to 250 kW with high-overload continuous current from 300 A to 460 A.The full selection includes:

　　NXP03855-A5L0SSB-A1A2000000

　　NXP04605-A5L0SSB-A1A2000000

　　NXP05205-A5L0SSB-A1A2000000

　　FAQ

　　1.What are the dimensions and weight of the NXP04605-A5L0SSB-A1A2000000?

　　The unit is supplied on a mechanical frame size 10,with a net weight of 340 kg and gross shipping weight of 341 kg.For detailed mechanical drawings and exact H x W x D dimensions,contact our technical support team at Beijing Zhongping Technology,as the physical envelope varies with busbar and cabling configuration options.

　　2.What is the delivery time or lead time for the VACON NXP04605 liquid-cooled drive?

　　Standard delivery time for this configured-to-order drive is 8 to 14 weeks from factory order acceptance.We maintain visibility on manufacturer global factory loading and provide a confirmed ship date within 72 hours of order placement.

　　3.Is the NXP04605 in stock,and what are the typical stock levels?

　　As a highly configurable engineered drive,the NXP04605 is not held as finished goods stock.It is assembled and tested to your specific model code at manufacturer production facilities.For urgent project needs,Beijing Zhongping Technology can coordinate with factory sales for expedited partial shipment of long-lead components.

　　4.How does a brake chopper inverter differ from a regenerative front-end unit?

　　A brake chopper inverter(NXB)dissipates excess braking energy as heat in an external resistor bank,making it cost-effective for applications with infrequent or low-power braking.A regenerative front-end unit(NXA)returns energy synchronously to the supply network,achieving higher energy efficiency for processes with continuous heavy braking.We help you calculate total cost of ownership to select the optimal energy management strategy.

　　5.What type of cooling liquid and external cooling system are required for the NXP04605?

　　The drive's liquid-cooled plate requires an external loop of clean,filtered coolant,typically demineralized water with corrosion inhibitor or a water-glycol mixture for freeze protection.The customer must provide a pump skid,liquid-to-air heat exchanger,or plant cooling water supply.Beijing Zhongping Technology provides a full system engineering scope,including cooling loop design and heat rejection calculations,to ensure on-site readiness.

　　6.What payment terms are available for purchasing the NXP04605 and similar VACON NXP drives?

　　We accept bank wire transfer(T/T)and major credit cards for smaller accessory orders.For this high-value engineered drive,Beijing Zhongping Technology offers a letter of credit(L/C)at sight and 30%advance T/T with 70%before shipment for corporate buyers with a qualified credit profile.

　　7.What is the warranty period and return policy for the NXP04605-A5L0SSB-A1A2000000?

　　We provide a 2-year warranty on all VACON NXP drives,effective from the date of commissioning or 18 months from shipment,whichever occurs first.A 3-year extended warranty is available upon request.This is a configured product built to your specification,so returns are not standard;however,Beijing Zhongping Technology reviews requests for restocking on a case-by-case basis for authorized distributors.

　　8.How much does the NXP04605 liquid-cooled VFD cost?What is the price range?

　　The configured drive price for a VACON NXP of this power class typically ranges from 45,000to80,000 USD,depending on control hardware,safety options,and firmware licenses selected.Prices fluctuate due to currency exchange rates,global semiconductor market conditions,and factory cost adjustments.For an accurate quotation reflecting your complete model code,contact Beijing Zhongping Technology directly.

　　9.What are the spare parts availability and recommended spare parts for the NXP04605?

　　We stock critical spare parts including control boards,I/O boards,fiber optic interface sets,and power module fans for immediate dispatch.We recommend keeping one set of control electronics and a spare cooling plate assembly for critical processes.For a complete recommended spare parts list tailored to your bill of materials and operational uptime targets,Beijing Zhongping Technology provides a lifecycle analysis.

　　10.How are the duty,customs,and import tariff considerations handled when importing the NXP04605?

　　The HTSUS code for this static converter is 8504.40.40.11 and the ECCN classification is EAR99.International shipments are dispatched under Incoterms CPT(Carriage Paid To)to your designated port or airport.All customs duties,brokerage fees,and destination country VAT/Tax are the responsibility of the buyer.Beijing Zhongping Technology includes full commercial invoices,a packing list,and a certificate of origin with every export order to facilitate smooth customs clearance at your destination.