H-Series electric rope hoists

It is a device used in lifting and handling systems to reduce unwanted load rotation during lifting. This type of hook block keeps the load in the direction from which it was lifted without uncontrolled twisting or turning, thus improving control in the handling and positioning of the load.

The double beak hook is generally used for lifting loads when it is necessary to stabilise underhook devices such as lifting beams and make the use of straps or chains more versatile.

In inverter-controlled motors, the encoder applied to the motor axis allows the inverter to have instant feedback on the actual motor speed and thus the actual lifting speed. It allows the motor to be used at very low RPM (very low lifting speed) for precise load handling control. The encoder also plays the role of a safety device as it transmits any discrepancies between supply frequency and motor speed to the inverter. A difference between the two means that there is some kind of malfunction and allows the inverter to stop supplying power to the motor.

OMIS hoists are designed for three-phase AC operation with a voltage of 380 to 500 V and a frequency of 50 to 60 Hz. The supply voltage for the controls is 24 V and frequency 50 to 60 Hz.

This is a canopy that provides shelter and protection from atmospheric precipitation such as rain and snow. Made of weatherproof materials, this canopy is essential for preserving integrity and operation in outdoor environments.

This is a cover for the mechanisms made of insulating material that acts as a shield to protect the different parts of the lifting system from heat sources from above such as lamps or heating systems.

These are devices inside the winding that constantly keep the motor at a temperature that prevents the formation of condensation inside it in environments with high temperature and humidity variations and in outdoor environments. The condensation prevention heating elements are always supplied in combination with PTC thermal probes.

OMIS hoist motors can be ordered with thermal probes located at the motor winding points most prone to overheating. They provide protection for motors used in hot environments or in particular climatic conditions where cooling of the motor by ventilation might not be sufficient. PTC temperature sensors are always supplied in combination with condensation prevention heating elements

OMIS hoist motors are manufactured as standard with insulation class F winding. On request they can be supplied with winding in insulation class H to make the winding more resistant to overheating.

If the operating area of OMIS hoist motors is tropical, a special treatment on the winding called “tropicalisation” may be required. A special spray is sprayed on the rotor to protect it from moisture and condensation.