Tag - Soft Starter

Solving motor condensation and freezing problems

In refrigerated cold stores and freezers, using automated equipment, and conveyor systems, often results in higher than normal maintenance costs and system down times, due to electric motors having condesation forming internally and even freezing when the motors are stationary. While the problems are not always resulting in an immediate failure, the lifetime of the motor is often significantly reduced.

Replacement costs and equipment down time reduce the productivity and profitability of the system. ABB, world leaders in electrical products and solutions, have introduced the new PSTX softstarter range with a feature designed to solve this problem.


When a motor is stationary, the softstarter injects a small DC current into a winding, generating enough heat to stop condensation and/or freezing of the motor. This provides greater lifetime of the motor and reduced maintenance costs. Additionally using a softstarter ensures a controlled start reducing the mechanical stress caused by typical DOL or start/delta starters. This increases the mechanical life of belts and bearings, provides smooth motion for transported products and materials, and significant reductions in peak energy demand, ensure the site supply network is lessed stressed, resulting in further reduced maintenance costs.

There is also a new mode called “Limp Mode”. This ensures even if there is a failure on one of the drive thyristors (the electronic driver element for each phase), the softstarter can still operate until repaired at a more convenient time.

Other integrated features include, detachable operator panel, integrated bypass contactor, Electronic overload, even application set-up wizards, all providing fast and compact installation, set-up, commissioning, and diagnostics.

Reducing maintenance costs and increasing uptime, all goes straight to the bottom line in increased profits. and operation productivity.

Another solution from CellTec. Engineering. Automation. Safety