Product Description
K Series by Valiadis
The K Series by Valiadis consists of three-phase asynchronous motors with durable squirrel-cage rotors and heavy-duty cast-iron housings. Therefore, the range provides dependable mechanical power for pumps, compressors, fans, conveyors and other continuously operated machinery.
The overall technical catalogue covers IEC frame sizes 80 to 560. Moreover, published configurations extend from approximately 0.18 to 1,250 kW, depending on motor speed, pole count and frame size.
Durable Squirrel-Cage Motor Design
The squirrel-cage rotor has no brushes or slip rings in its standard construction. Consequently, the motor provides a mechanically straightforward and low-maintenance drive solution.
Meanwhile, the cast-iron housing protects and supports the stator, rotor, bearings and shaft. As a result, the K Series suits demanding installations where mechanical strength and stable continuous-duty operation are important.
Key Benefits
- Three-phase asynchronous motor technology
- Heavy-duty cast-iron housing
- IEC frame sizes from 80 to 560
- Published outputs up to 1,250 kW
- Standard IP55 protection
- Class F winding insulation
- Standard 80°C temperature rise
- PTC winding protection
- Oil seals on drive and non-drive ends
- SKF or NSK bearings
- Regreasable bearings from frame size 160
- Rotatable top-mounted terminal box
- IE3, IE4 and IE5 efficiency ranges
- Variable-frequency-drive options
- Broad mounting and accessory selection
Together, these characteristics support dependable operation across varied industrial duties. Moreover, the extensive frame range helps users match the motor with different power, speed and installation requirements.
IE3, IE4 and IE5 Efficiency Options
Valiadis publishes separate K Series catalogues for IE3, IE4 and IE5 motor configurations. These efficiency-specific ranges cover IEC frame sizes 80 to 355 and include 2-, 4-, 6- and 8-pole options, depending on the required efficiency class and power rating.
Therefore, users can select an efficiency level according to operating hours, energy targets and project requirements.
For example, a continuously operated pump may achieve meaningful lifecycle savings with a higher-efficiency motor. Similarly, fans and compressors can reduce electrical losses when engineers correctly match the motor to the load.
However, the highest efficiency class is not automatically the correct option for every application. Consequently, users should also consider starting torque, operating speed, drive control and purchase cost.
Standard Electrical Configuration
The standard 50 Hz catalogue lists:
- Up to 3 kW: 380–420 / 220–240 V Y/Δ
- From 4 kW: 660–725 / 380–420 V Y/Δ
Therefore, the selected star or delta connection must match the site supply and starting arrangement.
Moreover, special voltages and frequencies are available as optional configurations. As a result, the motor can be adapted to specific UAE industrial supplies and international equipment requirements.
Protection and Thermal Management
The K Series includes IP55 protection as standard. Consequently, the enclosure provides protection against harmful dust ingress and water jets within the limits of the IP rating.
In addition, Class F insulation and PTC winding sensors support thermal protection. Therefore, compatible motor-control equipment can respond if the winding temperature rises beyond a safe level.
Optional IP56 and IP65 protection are also available. However, users should confirm the required enclosure according to dust, moisture, outdoor exposure and washdown conditions.
Bearings and Shaft Protection
Valiadis uses SKF or NSK bearings in standard K Series configurations. Moreover, motors from frame size 160 upwards use regreasable bearings.
Standard oil seals are fitted at both the drive and non-drive ends. Consequently, they help protect the bearing areas against normal industrial contamination.
Nevertheless, maintenance teams should follow the specified lubrication schedule. Otherwise, excessive or insufficient grease may reduce bearing life.
Optional Features
Available options include:
- Class H insulation
- Brake configurations
- Forced ventilation for inverter operation
- PT100 sensors in windings and bearings
- Anti-condensation heaters
- Encoder installation
- Insulated bearings
- Drive-end roller bearings
- Double output shafts
- Drip covers
- Special terminal-box positions
- Encapsulated windings and terminal boxes
- Special cables, voltages and frequencies
Therefore, the K Series can be adapted to challenging mechanical, environmental and control requirements.
Applications in the UAE
The K Series may suit:
- Water and wastewater pumps
- Industrial fans and blowers
- Air and gas compressors
- Belt and screw conveyors
- Gearboxes and geared machinery
- Textile equipment
- Food-processing machinery
- Marine and offshore systems
- HVAC and district cooling
- Manufacturing equipment
- Mixers and agitators
- General process machinery
For example, a K Series motor can provide continuous-duty power for a centrifugal pump. Alternatively, a forced-cooled motor can operate with a frequency inverter where constant torque is required at reduced speed.
Selecting the Correct K Series Motor
Correct selection depends on:
- Required power and torque
- Supply voltage and frequency
- Pole count and speed
- Efficiency class
- Starting method
- Variable-speed requirements
- Mounting position
- Protection level
- Ambient conditions
- Driven-equipment load
Therefore, users should provide complete application data before ordering. Otherwise, the motor may experience excessive temperature, starting current or mechanical loading.
Request a Valiadis K Series Motor in the UAE
Contact our motor specialists for technical selection, specifications and UAE pricing.
Please provide the required power, speed, voltage, frequency, efficiency class, mounting arrangement and driven equipment. Consequently, our team can recommend the correct K Series by Valiadis configuration.