Electric motor 450 kW, 2978 rpm, 400 V / 690 V, H17RL 355X3-2 LV

Model H17RL 355X3-2 delivers efficient operation of a low-voltage drive for the 2900-3000 rpm segment, where in practice the focus is on stability of engagement, thermal reserve and energy-saving running under continuous load. This low-voltage asynchronous electric motor from VYBO Electric is designed for operations that need reliable performance without compromise when modernising lines or replacing older units.

The 2900-3000 rpm segment for drives with an emphasis on continuous operation

In this performance range, an output of 450 kW together with a rated torque of 1443 Nm is applied, giving the drive sufficient reserve during starting and when connected to technology with higher inertia. The rated speed of 2978 rpm is suitable where a stable operating point and precise process coupling are decisive. The rated current at the △ 400V connection reaches 762 A and at the Y 690V connection 442 A, so the power supply design can be adapted to the plant network level without unnecessary changes to the switchboard concept. The power factor of 0.89 supports sensible sizing of the supply cable, and the efficiency of 96.1 percent reduces energy losses in long operating cycles.

The structure is based on a frame size of 355 mm and the strength of a cast iron frame, which is particularly valuable in practice where long service life is expected under vibration, repeated starts and higher mechanical load. As a low-voltage asynchronous electric motor, this type is suitable for LV electric motors in plants that place emphasis on precise service planning. The squirrel cage rotor in a solid aluminium design supports robust starting behaviour, while a starting torque of 140 percent and pull-out torque of 200 percent provide a usable reserve for heavier starts. A starting current of 700 percent is a parameter that must be taken into account when designing protection and switching throughout the entire supply branch.

Mounting design and mechanical integration into existing lines

The choice of mounting design includes IM B3, B35, B5 and V1, which makes replacement in lines with different bases, flanges or vertical mounting easier. The bearing arrangement is designed for more stable running, and the DE and NDE bearings in 6220C3 design provide a suitable reserve for long-term operation. The weight of 2470 kg must be taken into account already at the handling, foundation and service access planning stage. All these elements reduce the risk of unplanned intervention during drive refurbishment in manufacturing plants and by technology suppliers.

Operational durability for heavy industry

Electric motors of this series belong to the Heavy Duty process performance class and are intended for heavy industry, where long-term operation with high demands on thermal stability and mechanical resistance is expected. Insulation class F together with temperature rise B helps keep the thermal regime within limits that are important during repeated cycling or starts after shutdown. External starting inertia of 147 kg·m2 and a moment of inertia GD2 of 14,800 kg·m2 are among the values that are decisive when sizing starting, braking and operation with connected mechanics. For drive system design, this electric motor for high-speed applications is suitable where stable performance is expected even under demanding process dynamics.

The standard equipment includes a steel cooling cover, reinforced bearing arrangement including steel shielding and high-temperature lubrication, a terminal box in metal design and reinforced bearing shields for a more stable construction. With available accessories, thermal protection with 6x PT100 in the winding, PT100 in the DE and NDE bearing, anti-condensation heating and 3x PTC can be added, which makes it easier to monitor the motor condition in continuous operation. In practice, this is appreciated by operations with low-voltage infrastructure that need to integrate the drive quickly into existing protection and monitoring schemes.

The H17RL 355X3-2 design for reliable integration into production technologies

The modern design created using Hi-TECH technologies supports more precise processing of details, better repeatability of assembly and smooth running in applications where service discipline is important. VYBO Electric is the largest company in its sector in Central Europe, which is evident in practice especially in the scope of technical advice and support when designing replacements for existing drives. For technicians dealing with modernisation, this means shorter time from request to final configuration and better matching of the motor to real operating conditions.

This motor is suitable for mixing units, conveyor systems, crushers, mills, compressor stations, pump sets, fan assemblies, extrusion lines, rolling auxiliary drives, water drainage equipment, separation technologies, mining conveyors and drives for large process fans. In each of these cases, the combination of high output, robust mechanics and a suitable configuration for a 400V / 690V network will be evident, and it can be used in plants with different load control methods. If you need to check whether it is suitable for a specific process, send us an enquiry and we will prepare a technical recommendation for connection, mounting and operational load.

Technical summary for drive replacement without unnecessary compromise

H17RL 355X3-2 offers 450 kW, 2978 rpm, a torque of 1443 Nm, efficiency of 96.1 percent and a construction ready for demanding industrial operations. In combination with the 355 mm frame, a suitable mounting solution and robust equipment, this is a motor that is highly usable for the planned replacement of an older drive as well as for the design of a new technological assembly. For an accurate assessment of compatibility and operating conditions, send us an enquiry.

The 2900-3000 rpm segment in network and starting design

For this type of drive, the 2900-3000 rpm segment is especially important when it is necessary to align the speed, starting current and mechanical inertia of the connected technology. The 700 percent value for starting current requires correct protection settings, while the 140 percent starting torque helps at start-up with load build-up. For a manufacturing plant, this is a practical combination that supports a stable process without unnecessary overloading of the network.