Variable Frequency Drive(VFD)丨3‑Phase BK-ZHB Series(75~160kw)

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The BK-ZHB570 series (3 Phase) heavy-duty industrial frequency inverter و variable frequency drive (VFD) is a high-performance current vector AC drive specifically engineered for heavy-duty industrial applications requiring three-phase power supply. As a professional frequency converter و inverter drive, it is ideally suited for driving general-purpose three-phase AC asynchronous motors, and excels in powering equipment with high starting impact, continuous heavy loads, and rigorous operational demands—such as industrial crushers, large ball mills, heavy-duty elevators (equipped with dedicated elevator drive), hydraulic presses, steel rolling mill auxiliaries, and mining conveyors (matched with specialized conveyor drive).

This three-phase heavy-duty VFD supports two advanced control modes: voltage-to-frequency ratio control (V/F control) and sensorless vector control (SVC). As a reliable frequency inverter, it boasts an overload capacity of 1.5 times the rated current, outstanding low-frequency high-torque output performance (150% rated torque at 0.25Hz in SVC mode), and a comprehensive fault protection mechanism (including overcurrent, overvoltage, undervoltage, overheating, phase loss, and short-circuit protection). Designed to adapt to three-phase grid characteristics, this AC drive can effectively withstand grid voltage fluctuations, minimize equipment energy losses, and significantly enhance the operational stability and energy efficiency of large-scale industrial production.

Its core design focuses on high reliability, robust environmental adaptability, and precise control under heavy-duty conditions. Through optimized heat dissipation structures, reinforced circuit layouts, and industrial-grade component selection, this frequency converter ensures long-term stable operation in harsh industrial environments—such as high-temperature workshops, dusty mining sites, and humid processing plants—meeting the uninterrupted operation demands of critical industrial processes.

التطبيقات

The BK-ZHB570 Series Heavy-Duty Inverter Drive is widely applied in high-load industrial scenarios and critical infrastructure, providing stable, efficient, and precise drive solutions for heavy-duty equipment with high starting torque requirements and harsh operating conditions:

Heavy Industry & Metallurgy

• Steel rolling mills, continuous casting equipment powered by industrial frequency inverter
• Non-ferrous metal smelting & calendering machines with high-performance VFD
• Ore crushers, ball mills, and mineral processing equipment matched with frequency converter
• Metallurgical hoisting cranes, ladle transfer equipment equipped with AC drive

Mining & Construction Materials

• Mine belt conveyors with dedicated conveyor drive, bucket elevators
• Cement mill drives, rotary kilns powered by heavy-duty variable frequency drive
• Stone crushers, sand making machines supported by inverter drive
• Construction tower cranes, hoisting systems with reliable frequency inverter

Port & Logistics Handling

• Shore container cranes, gantry cranes equipped with VFD
• Grab ship unloaders, bulk material handlers matched with AC drive
• Heavy-duty conveyors with specialized conveyor drive, automated storage stackers
• Container loading/unloading equipment powered by frequency converter

Chemical & Petroleum Industry

• Chemical reactor agitators, pressure vessel drives with industrial frequency inverter
• Oil drilling rigs, well workover machines supported by variable frequency drive
• Large air compressors, reciprocating pumps powered by inverter drive
• Pipeline transportation pumps, oil refining equipment matched with VFD

Water Treatment & Environmental Protection

• Sewage lifting pumps with dedicated pump inverter, sludge dewatering presses
• Aeration blowers (equipped with fan inverter), chemical dosing pumps
• Waste incineration plant grate drives powered by frequency converter
• Desalination plant high-pressure pumps supported by AC drive

New Energy & Power Systems

• Wind turbine pitch control systems with VFD
• Solar energy storage system pumps matched with pump inverter
• Power plant boiler feed pumps, induced draft fans (equipped with fan inverter)
• New energy vehicle production line heavy-duty conveyors with conveyor drive

HVAC & General Industrial

• HVAC systems powered by specialized HVAC inverter for energy-saving operation
• Ventilation equipment with high-efficiency fan inverter
• Building water supply systems matched with pump inverter
• General industrial machinery supported by versatile variable frequency drive

Agriculture & Food Processing

• Large agricultural machinery (combine harvesters, tractors) with frequency inverter
• Grain drying equipment, bulk material conveyors equipped with conveyor drive
• Oil press machines, food extrusion equipment powered by AC drive
• Feed grinder drives, mixing machines matched with VFD

ميزات المنتج

Diversified and Precise Control Technology

As a professional variable frequency drive (VFD), it supports two control modes (V/F control, SVC open-loop vector control), which can be flexibly switched according to the characteristics of heavy-duty equipment. This industrial frequency inverter can output 150% rated torque at a low frequency of 0.25Hz, with strong loaded starting capability and a steady-state speed accuracy of ≤±0.2%, meeting the precise speed regulation needs of pump inverter, fan inverterو elevator drive applications.

Intelligent Integration and Interconnection Capability

This frequency converter is built-in with PID controller and preset frequency function, which can directly connect to closed-loop process control such as pressure and flow. Standard-equipped with RS485 communication interface, compatible with Modbus-RTU protocol, this AC drive facilitates remote control and system integration with PLC and upper computer, reducing the difficulty of automation transformation for conveyor drive و HVAC inverter systems.

Stable and Reliable Heat Dissipation and Protection Design

The fully sealed structure of the heat dissipation duct effectively isolates dust and moisture, with strong environmental adaptability. Combined with intelligent air-cooled control, this inverter drive has excellent heat dissipation efficiency, ensuring long-term stable operation in the industrial environment of -10℃~40℃. The IP20 protection level complies with industrial on-site installation specifications, reducing the external environment impact on pump inverter, fan inverter, and other specialized applications.

Comprehensive Safety Protection System

This VFD integrates 9 core protection functions, including output phase loss, instantaneous current, overvoltage, undervoltage, overheating, overload, overcurrent, braking and short circuit protection. It fully avoids equipment failure risks under heavy-duty working conditions for industrial frequency inverter applications, maximizing the service life of motors and frequency converter.

Convenient and Adaptable Installation and Working Condition Compatibility

The installation process is simple, with two installation methods (wall-mounted and cabinet-type) to adapt to different on-site spaces. The carrier frequency is adjustable from 0.5kHz to 16.0kHz, which can balance low-noise operation and load adaptability, and can match the drive needs of various heavy-duty equipment such as crushers, cranes, and specialized pump inverter, fan inverter, elevator drive, conveyor drive systems.

المواصفات

Model Comparison Chart

Note:

1. The size and weight vary depending on the voltage range, and are subject to the customized actual product.
2. DC Input is also customizable. Please contact the sales team before placing the order.

✅ FAQs – 75–160kW Three-Phase Variable Frequency Drive (VFD)

Q1: What industrial systems typically use a 75–160kW VFD?
This high-power range powers mission-critical applications such as:

• Municipal water booster & wastewater lift stations (100–200 HP pumps)
• Large screw or centrifugal air compressors in manufacturing plants
• Mine hoists, crushers, and long-distance conveyors
• Cooling water circulation in power plants or data centers
• Extrusion lines and rolling mills in metal/plastic processing
  These systems demand continuous operation, high torque at low speed, and minimal downtime.

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Q2: Can a single 160kW VFD replace multiple smaller drives?
Yes—and it often reduces total cost of ownership. For multi-pump headers or parallel fan arrays, one 160kW VFD with built-in multi-motor control logic can synchronize operation, simplify wiring, and cut panel space by up to 40%. However, redundancy-critical systems may still prefer N+1 smaller units.

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Q3: How does this VFD handle extreme overload conditions (e.g., crusher jam)?
Our 75–160kW models feature advanced thermal modeling and deliver:

• 150% rated current for 60 seconds
• 180% for 10 seconds (with optional overload extension)
• Torque limit protection to prevent mechanical damage
  This ensures safe recovery from jams without tripping—critical in mining and recycling operations.

🔍 Keywords: heavy-duty 160kW VFD, crusher VFD overload protection, high-torque industrial drive, jam-resistant VFD

Q4: Is harmonic mitigation included for utility compliance?
Standard units include a built-in DC choke (reducing THD to ~20–30%). For sites requiring THD <5% (per IEEE 519), we offer factory-integrated options:

• 12-pulse diode front-end + phase-shifting transformer
• Active Front End (AFE) with near-unity power factor
  Both solutions avoid costly external filters and simplify grid approval.

🔍 Keywords: 160kW VFD IEEE 519 compliant, AFE VFD 150kW, low-harmonic high-power VFD, 12-pulse VFD system

Q5: Can it operate in high ambient temperatures (e.g., Middle East or steel mills)?
Yes. With forced-air cooling, high-temp capacitors, and optional derating curves, our VFDs operate continuously at +50°C ambient (standard) or +60°C with derating. All PCBs are conformal-coated for dust/salt resistance—ideal for desert, marine, or metallurgical environments.

🔍 Keywords: high-temperature 160kW VFD, VFD for Middle East, +60°C VFD operation, rugged industrial inverter

Q6: What communication and control options support Industry 4.0 integration?
All models support Modbus TCP/IP as standard. Optional embedded modules include:

• Profinet IRT (for synchronized motion)
• EtherNet/IP + CIP Motion
• OPC UA server for cloud SCADA
  You can monitor real-time energy use, motor health, and fault history via your IIoT platform.

🔍 Keywords: 150kW VFD with Profinet IRT, OPC UA VFD, IIoT-ready industrial drive, smart factory VFD 160kW

Q7: What’s the recommended installation method—wall-mount or floor-standing cabinet?
For 75–110kW: wall-mount with adequate clearance is acceptable.
For 132–160kW: we recommend floor-standing IP21 cabinets with integrated cooling fans and cable entry from bottom/top. We provide free layout drawings و thermal simulation reports to ensure safe installation.

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