The GESHI GS Three Phase Induction Motor (H71-H355) is a general-purpose, squirrel-cage asynchronous motor designed to deliver continuous rotational torque across standard industrial power grids. Engineered for continuous duty cycles in diverse mechanical drive systems, this machine converts electrical energy into mechanical power with high reliability. Plant engineers and Original Equipment Manufacturers (OEMs) select this motor when retrofitting legacy drive assemblies or specifying robust prime movers for heavy-duty machinery. Positioned at the drive layer of the industrial control architecture, it receives electrical power directly from motor starters or variable frequency drives to actuate driven loads.
Understanding three phase induction motor and asynchronous motor technology
Industrial production lines frequently encounter mechanical stalling, voltage fluctuations, and thermal overload caused by fluctuating load demands on driven equipment. This motor operates on the principle of electromagnetic induction, where a rotating magnetic field generated in the stator induces current in the rotor winding, producing electromagnetic torque. The stator winding receives three-phase alternating current, creating a synchronous rotating magnetic field that sweeps past the rotor conductors at a slip frequency. This continuous slip is essential for generating rotor current and subsequent torque output, allowing the motor to self-start and adapt dynamically to varying mechanical resistance. Advanced electrical insulation systems and optimized slot geometries minimize core losses and winding heating under heavy loads. Thermal sensors embedded within the stator windings provide continuous temperature feedback to the control panel, preventing catastrophic insulation breakdown. This robust electrical and mechanical design ensures stable continuous operation in demanding environments without requiring complex feedback devices.
Technical Specifications
Rated Power: 0.25 kW - 315.0 kW @ 50 Hz / 60 Hz
Frame Size: H71 - H355 @ Standard IEC Dimensions
Mounting Configuration: B3 / B5 / B35 @ IM Code
Ingress Protection: IP54 / IP55 @ IEC 60034-5
Insulation Class: Class F @ 155 °C Temperature Rise Limit
Energy Efficiency: IE2 @ IEC 60034-30
Rated Voltage: 380 V / 415 V / 660 V @ Delta / Star Connection
Ambient Temperature: -20 °C - 40 °C @ 1,000 m Altitude Max
Duty S1: Continuous @ IEC 60034-1
System Integration and Hardware Setup
Mechanical installation requires secure mounting onto a rigid, machined foundation or baseplate to eliminate structural vibration and shaft misalignment. Technicians must use precision alignment tools to ensure the motor shaft aligns within specified radial and axial tolerances relative to the driven load. Electrical connection involves terminating power cables to the main terminal box using appropriate cable glands to maintain the specified ingress protection rating. Each phase conductor must be torqued securely to the designated terminal studs, ensuring low-contact resistance and preventing localized overheating. Proper grounding is mandatory; a dedicated protective earth conductor must connect the motor frame grounding terminal to the facility earth busbar. When operating this motor via an inverter, shielded power cables should be utilized, and cable shields must be terminated 360 degrees at both ends to mitigate electromagnetic interference.
Reliability and Environmental Durability
The mechanical housing consists of cast iron or high-grade aluminum alloy, providing structural rigidity and high resistance to mechanical impact. Cooling is achieved through an external shaft-mounted cooling fan encased in a protective cowl, directing airflow across longitudinal cooling ribs on the motor frame. Shaft seals and O-rings at all critical joint interfaces prevent the ingress of ambient dust, moisture, and water jets, sustaining internal component integrity. Bearings are pre-greased with high-temperature lithium-based lubricants and sealed for extended service intervals, reducing routine maintenance overhead. The Class F insulation system withstands severe thermal stress and momentary overloads without compromising dielectric strength. These structural characteristics yield a high mean time between failures, ensuring uninterrupted operation in continuous process industries.
Selection Guidance and Alternative Options
Selecting the appropriate motor model requires evaluating operational parameters such as required mechanical power output, operating speed, ambient temperature, and duty cycle constraints. Engineers must match the frame size, mounting arrangement, and shaft dimensions to the existing mechanical interface of the driven equipment. For applications requiring variable speed control, pairing this motor with a compatible inverter ensures smooth torque delivery across a wide frequency range. When evaluating replacements for legacy units, Beijing Zhongping Technology provides comprehensive cross-reference selection and local inventory support to minimize operational downtime. Technical specialists are available to analyze specific load profiles and recommend the optimal frame and power combination for targeted industrial applications.
Typical Applications
Industrial plant managers and equipment builders deploy this motor across diverse production environments to maintain reliable mechanical power transmission.
Machine tool drives supply primary spindle rotation and auxiliary axis actuation for metal cutting lathes, milling machines, and heavy-duty boring centers.
Fluid pumping systems drive centrifugal pumps, submersible pumps, and positive displacement pumps in municipal water treatment and chemical processing plants.
Air handling and ventilation power industrial centrifugal fans, blowers, and exhaust systems within large manufacturing facilities and commercial HVAC networks.
Material handling conveyors actuate belt conveyors, roller tables, and heavy-duty assembly line transfer systems in distribution warehouses and mining sites.
Mixing and agitation drive high-viscosity fluid agitators, industrial blenders, and reaction vessel stirring mechanisms in food processing and pharmaceutical manufacturing.
How It Works
The operational workflow begins when three-phase alternating current is supplied to the stator winding terminals from an external power source or motor starter.
1. Energizing the stator windings creates a rotating magnetic field that revolves around the inner bore of the stator core at synchronous speed.
2. This magnetic field cuts across the short-circuited conductors of the squirrel-cage rotor, inducing a high electrical current via electromagnetic induction.
3. The interaction between the induced rotor current and the stator magnetic field generates a mechanical torque that forces the rotor to turn.
4. The rotor accelerates until it rotates slightly slower than the synchronous speed, establishing a stable operating slip required for continuous torque generation.
5. Mechanical power is transferred through the extended motor shaft to the connected load, maintaining continuous rotation under load variations.
[DIAGRAM: Schematic flow diagram illustrating the conversion of three-phase electrical input into a rotating magnetic field, rotor induction current generation, and mechanical shaft power output.]
Key Features
General-purpose design provides standardized electrical and mechanical interfaces that integrate seamlessly into existing industrial machinery without requiring custom modifications. This versatility allows plant engineers to standardize spare parts across multiple production lines, reducing overall inventory holding costs.
Wide power range from 0.25 kW to 315 kW accommodates diverse load requirements from small auxiliary pumps up to heavy industrial processing equipment. Users can scale motor selection precisely to match specific torque and power demands, avoiding oversizing and optimizing energy consumption.
Comprehensive frame size coverage from H71 to H355 ensures standardized mounting dimensions conforming to global IEC standards. Plant operators can easily replace legacy motors or design new machinery with predictable spatial footprints.
B3, B5, and B35 mounting configurations offer flexible installation options including foot mounting, flange mounting, and combined foot-flange setups. Engineers can adapt the motor orientation to horizontal or vertical mounting positions dictated by mechanical constraints.
IP54 and IP55 protection ratings shield internal electrical windings against harmful dust accumulation and water splash or low-pressure water jets. Maintenance teams experience reduced motor failure rates in harsh, dusty, or humid operating environments.
Class F insulation system provides high thermal endurance and dielectric resilience against winding temperature spikes during heavy-duty cycles. This characteristic extends motor lifespan and ensures dependable operation under fluctuating thermal loads.
IE2 energy efficiency compliance minimizes electrical power losses during continuous operation, contributing to reduced facility energy expenditure. Plant operators achieve lower operational overhead while meeting regional energy efficiency mandates.
The integration of these features establishes a balanced portfolio of general-purpose motors capable of servicing rigorous industrial environments. From material handling to fluid transport, the robust construction and standardized electrical parameters ensure predictable performance across varied operational profiles.
Frequently Asked Questions (FAQ)
1. What is the current stock availability and standard delivery lead time for urgent replacements?
Beijing Zhongping Technology maintains extensive local warehouse reserves of standard motor models, enabling same-day dispatch or rapid delivery to minimize unplanned plant downtime.
2. What are the terms of the product warranty and the RMA processing procedure?
Every unit includes a 12-month factory warranty backed by pre-shipment quality verification, and Beijing Zhongping Technology provides streamlined RMA support for rapid evaluation and replacement.
3. What are the electrical power supply requirements and voltage tolerance limits?
The motor operates on standard three-phase AC supplies at 380 V, 415 V, or 660 V with a permitted voltage fluctuation tolerance of plus or minus 10 percent.
4. Can this motor be driven by a variable frequency drive for speed control?
Yes, the insulation system and winding design are fully compatible with standard pulse-width modulation inverters when operated within recommended frequency ranges.
5. What environmental protection ratings apply to standard and outdoor installations?
Standard units are rated to IP54, with optional IP55 configurations available for environments requiring enhanced protection against water jets and airborne particulate matter.
6. What mechanical mounting positions are supported by the standard frame designs?
The motor supports horizontal foot mounting, vertical flange mounting, and combined foot-flange arrangements according to standard IEC mounting codes.
7. What routine maintenance procedures are recommended to maximize operational lifespan?
Regular maintenance involves inspecting terminal box tightness, monitoring bearing operating temperatures, clearing dust accumulation from cooling fins, and checking alignment.
8. How should technical parameters be matched when selecting an alternative replacement model?
Selection requires matching the rated power output, synchronous speed, frame size dimensions, mounting configuration, and operating voltage to the specific application requirements.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
