- ZK
- SHENZHEN
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
The MV900 series fits all sorts of high/low-temperature heating needs: preheating work ahead of welding, post-weld heating processing, plus hot mounting and dismounting for rotors. In real production, it is widely used for circumferential weld heat treatment/postheating, spade tooth preheating, flange connection postheating, preheating before pipeline anti-corrosion coating, coating preheating of core urban water supply pipelines, and flat heating blanket preheating during offshore platform and ship manufacturing.

I. Basic Concept
Induction heating equipment relies on electromagnetic induction to deliver highly efficient heating:it converts electricity into heat to realize quick and precise thermal processing of metal workpieces.The device’s key parts are high-frequency AC power supply and induction coil,which have gained broad adoption in metal processing,mechanical assembly and relevant sectors.
II. Working Principle
Power Conversion
The unit shifts regular 50Hz industrial AC to high-frequency alternating current, which supplies the essential energy required for subsequent magnetic field creation.
Magnetic Field Production
High-frequency current travelling in the induction coil creates an alternating magnetic field whose magnitude varies rapidly alongside current frequency.
Heating via Eddy Currents
A conductive workpiece set close to the induction coil will have eddy currents induced internally by varying magnetic flux. Owing to the workpiece’s electrical resistance, these circulating currents release heat and quickly raise the part’s temperature.
III. Core Application Fields
Metal Heat Treatment
Adaptable to quenching, annealing, tempering treatments to upgrade metal hardness, toughness and overall mechanical characteristics.
Welding Application
Matches welding needs for copper, aluminum, silver and other metals; homogeneous heating of welding regions effectively upgrades welding outcomes.
Forging Forming
Realizes pinpoint heating for bar and sheet metal terminals and furnishes reliable heat supply during forging, bending processing.
Pipeline & Thermal Mounting
Covers industrial pipeline preheating, weld heat treatment, plus thermal assembly and disassembly for motor bearings and mechanical parts.
IV.Product Features Introduction:
Industry-leading wide inductance design
This electromagnetic induction heating system features an extensively tunable inductance structure (2μH~600μH). Its inductance spectrum covers low values for accurate partial heating and high values for deep heating of large-size components to fit multiple industrial working environments. Thanks to adaptive resonant control, the system maintains optimal energy coupling performance when metal types or workpiece dimensions alter, substantially lifting compatibility and heating effectiveness.
Integrated isolation transformer
- High-frequency eddy current losses are lowered and equipment efficiency raised via nanocrystalline magnetic core application. The isolation transformer curbs high-frequency inverter noise as well as grid electromagnetic interference, while galvanically isolating output and power grid for enhanced output safety.
Precise temperature control improves process quality.
--Boasting high-accuracy temperature control within ±3℃,with the best precision reaching ±1℃,this equipment works reliably under tough operating environments for semiconductor production and precision metal heat treatment.
--Thanks to contact-free heating mode,oxidation and part deformation are prevented to keep material performance steady.
High stability and comprehensive fault mechanisms Capable of 24-hour uninterrupted full-load running, the three-phase 400VAC model tolerates ±20% fluctuation of input mains voltage. Multiple safeguard circuits are integrated to guard against overvoltage, overcurrent, phase failure and excessive temperature.
Safe and reliable, industrial-grade protection design
Available in separate air-cooled and complete water-cooled structural options,the medium-frequency induction heating power supply features PCBs and matching components protected via three-layer conformal coating,adapting to complicated working conditions represented by offshore platforms.
Data storage
The system instantly shows and archives heating temperature curves.Users can look up heating data on demand; once heating finishes, historical records are exportable to a USB drive.
Multi-segment process curve
This system boasts abundant control modes, covering constant power regulation,power-time curve control,constant temperature running (the constant temperature module is an optional add-on) and temperature-time curve control. Different modes are selectable to match distinct production conditions and application requirements.
Remote control (customized module)
This unit incorporates multiple communication interfaces including WiFi/5G wireless,RS485 and TCP/IP MODBUS, supporting remote supervision and control functions.
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/N | Model | Parameters | Inductance range | Dimension | Weight |
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 Series Specifications
| Model | Power capacity (kVA) | Maximum input current (A) |
| Three-phase power supply: 350…480V, 50/60Hz | ||
| 20kw | 20 | 32 |
| 25kw | 25 | 41 |
| 40kw | 40 | 66 |
| 60kw | 60 | 98 |
| 80kw | 80 | 132 |
| 100kw | 100 | 164 |
| 120kw | 120 | 198 |
| 160kw | 160 | 264 |
| 200kw | 200 | 396 |
| 250kw | 250 | 413 |
| 300kw | 300 | 495 |
| 350kw | 350 | 578 |
| 400kw | 400 | 660 |
| 450kw | 450 | 743 |
| 500kw | 500 | 825 |
Product wiring diagram(External wiring diagram)

Internal control board wiring diagram

Installation Environment:
1) Ambient Temperature: Ambient temperature has a significant impact on the lifespan of the variable frequency induction heating power supply. The operating temperature must not exceed the allowable range (-10℃~45℃).
2) Place in a location free from vibration.
3) Avoid installation in direct sunlight, damp areas, or areas with water droplets.
4) Avoid installation in locations with corrosive, flammable, or explosive gases in the air.
MV900 model applications:
A、Circumferential Weld Heat Treatment Control /PWHT for Girth Welds


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

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


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


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


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


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):


B.Thermocouple Assembly:


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



D、Blanket type Flexible Induction Coil:


E、Clamshell Fixture Induction Coil :

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MV900 System Application Cases Connection Diagram:
A.Clamshell Fixture Induction Heating Application Diagram

B.C-Frame Fixture Induction Heating Application Diagram

C.Helical Air-Cooled Induction Cable Heating Application Diagram

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









