• MV900 20KV A Induction Heating System
MV900 20KV A Induction Heating System

The MV900 series is suitable for various high and low temperature heating applications,including preheating before welding,postheating after welding, and hot disassembly and assembly of rotors,such as heat treatment/postheating of circumferential welds,preheating of spade teeth,postheating of flange interfaces,preheating of anti-corrosion coatings for pipelines,preheating of coatings for main urban water supply pipelines,and flat blanket preheating for offshore platform shipbuilding.

Induction Heating System Introduction

I. Basic Concept

An induction heating system is a high-efficiency heating device based on the principle of electromagnetic induction, converting electrical energy into thermal energy to achieve rapid and precise heating of metal workpieces. Its core components include a high-frequency AC power supply and an induction coil, widely used in metal processing, mechanical assembly, and other fields.

II. Working Principle

  1. Energy Conversion: The device converts the standard 50Hz industrial AC power into high-frequency AC power, providing the energy foundation for subsequent magnetic field generation.

  2. Magnetic Field Generation: The high-frequency current passing through the induction coil generates an alternating magnetic field, whose intensity rapidly changes with the current frequency.

  3. Eddy Current Heating: When a conductive workpiece is placed near the induction coil, the changing magnetic flux induces eddy currents within the workpiece. These eddy currents generate heat due to the workpiece's resistance, achieving rapid temperature rise.

III. Core Application Fields

  1. Metal Heat Treatment: Used for quenching, annealing, tempering, and other processes to enhance the hardness, toughness, and mechanical properties of metal materials.

  2. Welding Processing: Suitable for copper, aluminum, silver, and other metal welding, ensuring uniform heating of the welding area to improve welding quality.

  3. Forging and Forming: Provides targeted heating for the ends of metal bars or sheets, offering a stable heat source for forging, bending, and other processes.

  4. Pipeline and Thermal Assembly: Used for industrial pipeline preheating, weld seam heat treatment, and thermal assembly/disassembly of motor bearings and other mechanical components.


Inuction heating

IV.Product Features Introduction:

  • Industry-leading wide inductance design

  • The electromagnetic induction heating system adopts a wide-range adjustable inductance design (inductance range: 2μH~600μH),covering low inductance (precision local heating) to high inductance (large volume penetration heating),adapting to diverse industrial scenarios.Through adaptive resonant control technology,it ensures efficient energy coupling under different load conditions (such as metal materials and size changes),significantly improving system compatibility and heating efficiency.

  • Integrated isolation transformer

  • The use of nanocrystalline magnetic cores reduces high-frequency eddy current losses and improves efficiency;the isolation transformer effectively reduces noise generated by the high-frequency inverter and reduces electromagnetic interference to the power grid;at the same time,it isolates the output port from the power grid,increasing output safety.

  • Precise temperature control improves process quality.

  • --High-precision temperature control of ±3℃ (maximum ±1℃),suitable for harsh environments such as semiconductors and precision metal

  • heat treatment.

  • --Non-contact heating avoids oxidation and deformation,ensuring stable material properties.

  • High stability and comprehensive fault mechanisms

  • It can work continuously at full load for 24 hours a day,and can also operate under power grid fluctuations of ±20% (three-phase 400VAC\

  • model).It has protection mechanisms for overvoltage,overcurrent,phase loss,and overtemperature.

  • Safe and reliable, industrial-grade protection design

  • The medium-frequency induction heating power supply adopts an independent air-cooled or fully water-cooled structure,and the PCB and other components are treated with a three-layer conformal coating process,making it suitable for complex environments such as offshore platforms.

  • Data storage

  • The heating temperature curve can be displayed and stored in the system in real time.Heating data can be queried at any time or historical heating data can be copied to a USB flash drive after heating is completed.

  • Multi-segment process curve

  • The system has multiple control modes,including constant power,power-time curve,constant temperature (constant temperature operation module is optional),and temperature-time curve,which can be selected according to different working conditions and requirements.

  • Remote control (customized module)

  • The device integrates communication modules such as WiFi/5G wireless,RS485,and TCP/IP MODBUS,enabling remote monitoring and control.

  • Diverse power control modes

  • Output power can be controlled via 0-10V,0-5V,4-20mA,and digital adjustment.


V.MV900 Specifications and Parameters

S/NModelParametersInductance rangeDimensionWeight



1



MV900-4T0020AA

Power;20KVA

Input voltage:3-phase 380V±15%)

Frequency range:3-30K

MaxInput Current:35A



3-150UH


         W:303MM

H:437MM

          D:500MM



26.5KG



2



MV900-4T0040AA

Power:40KVA

Input voltage:3-Phase380V(±15%)

Frequency:3-30K

Max.Input Current:68A



5-200UH


         W:375MM

H:624MM

          D:570MM



49.5KG



3



MV900-4T0060AA

Power:60KVA

Input voltage:3-Phase380V(±15%)

Frequency:3-30K

Max.Input Current:100A



5-260UH


         W:554MM

H:969MM

          D:810MM



155KG



4



MV900-4T0080AA

Power:80KVA

Input voltage:3-Phase380V(±15%)

Frequency:3-30K

Max.Input Current:135A



5-260UH


         W:554MM

H:969MM

          D:810MM



160KG



5



MV900-4T0120AA

Power:120KVA

Input voltage:3-Phase380V(±15%)

Frequency:3-30K

Max.Input Current:200A



5-350UH


        W:654MM

H:1040MM

         D:910MM



232KG



6



MV900-4T0160AA

Power:160KVA

Input voltage:3-Phase380V(±15%)

Frequency:3-15K

Max.Input Current:270A



10-400UH


        W:804MM

H:1250MM

         D:1165MM



300KG



7



MV900-4T0200AA

Power:200KVA

Input voltage:3-Phase380V(±15%)

Frequency:3-15K

Max.Input Current:340A



10-400UH


        W:804MM

        H:1250MM

        D:1165MM



320KG


MV900 model applications:

A、Circumferential Weld Heat Treatment‌ Control /PWHT for Girth Welds

Metal heatingInuction heating

1.The C-shaped induction coil fixture is mounted on an electrically powered cart,enabling vertical lifting and horizontal extension of the inductor via cart movement control.

2.The inductor shall incorporate an arc-adjustment mechanism to accommodate workpieces of varying diameters during heating.

B、Bucket Tooth Preheating

Metal heating

1.Custom medium-frequency power supply (2–25 kHz)‌: Adaptable to tooth profiles ranging from small gear teeth to mega-sized mining teeth.

2.Modular coil configurations‌: Rapid-change design enabling conformation to complex shovel tooth geometries.  

3.Intelligent temperature control system‌: Infrared pyrometry + closed-loop PLC control ensuring process reproducibility (±10℃ deviation). 

C、‌Rotor Thermal Removal & Installation

Inuction heatingMetal heating

1.Flexible heating cable design‌:Conformable to complex structures (e.g.rotor shafts,stator bores) with 360° wraparound capability.

2.‌Fixed-coil configuration‌:Reusable for repeatable builds with >92% thermal efficiency.

3.‌Rapid uniform heating‌:Cuts disassembly/installation time by 3X+ (benchmark:40min → 12min @ Ø500mm journal).

4.‌Localized heating‌:Selective targeting of mating surfaces (bearing journals,core seats) preventing bulk thermal distortion (ΔT<30℃ gradient).

D、Flexible Heating Blanket

Inuction heatingMetal heating

1.‌Flexible contouring capability‌:Heating blankets conform tightly to pipes,curved surfaces,and contoured geometries (e.g.wind turbine blades,ship welding grooves) ‌— inaccessible to rigid coils.

2.‌Custom-engineered sizing‌:Supports non-standard designs with coverage ‌from 200cm² to 50m²‌ 

3.Magnetic/Vectran® strap securing‌: Enables 80% faster wrap completion ‌vs manual coil winding‌.

E.‌Pipeline Preheating for Anti-Corrosion Coating‌

Inuction heatingMetal heating

1.‌Deployable heating blanket solution‌:Conforms tightly to pipelines,curved surfaces,and contoured geometries. Universal pipe compatibility

2.‌Clamshell heater alternative‌:‌Pre-engineered sizing‌ for fixed pipe diameters,‌Minimizes setup time by 75% vs custom wrapping

F、‌Precision Wrapping Preheating for Flanged Joints & T Fittings

Inuction heatingMetal heating

1.Conformal Wrap Heating Technology:chieves full geometric conformance on pipelines & curved surfaces,complex geometries (wind turbine blades,fossil-fuel boiler pressure parts,ship welding grooves,extruded tees)

2.Custom Cable Configuration:Heating cable lengths:10m to 60m (customizable in 5m increments)

MV900 Product accessories:

A.Output Extension Cable‌(Customizable Length per Project Requirements):

Inuction heatingMetal heating

B.Thermocouple Assembly:

Inuction heatingMetal heating

C、‌Induction Coil Assembly(Customizable Length per Application Requirements):

Inuction heatingMetal heatingInuction heating

D、Blanket type Flexible Induction Coil:

Metal heatingInuction heating

E、‌Clamshell Fixture Induction Coil :

Metal heatingInuction heatingMetal heating

MV900 System Application Cases Connection Diagram

A.Clamshell Fixture Induction Heating Application Diagram

Inuction heating

B.C-Frame Fixture Induction Heating Application Diagram

Metal heating

C.Helical Air-Cooled Induction Cable Heating Application Diagram

Inuction heating

D.Blanket-Type Air-Cooled Induction Heating Application Diagram

Metal heating

Product wiring diagram:

External wiring diagram

Inuction heating


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