Come to this week's Tech Talk session and learn for yourself how you can cost effectively start large medium voltage motors

Starting large medium-voltage motors on relatively weak power distribution systems leads to voltage sags which may compromise the power quality of the electrical system or (worse yet) prevent the starting of the motors themselves. In some cases, the utility in-charge has stringent voltage drop requirements (typically <5%) during a motor start event. The industry standard, when direct-on-line (DOL) motor starting is not possible, is to use adjustable speed drives (ASD) or reduced-voltage soft starters (RVSS). These systems are complex, costly, and can be difficult to install and maintain.

This NEPSI Tech Talk Session presents NEPSI’s actiVAR, a cost-effective solution which uses ABB’s DS1-M (a transient-free capacitor switch), and large multi-stage capacitor banks controlled by modern high-speed digital relays for DOL starting of large medium voltage motors. This session first reviews the pros and cons of DOL starting, ASD technology, RVSS technology, and actiVAR technology. The economics of the actiVAR solution is then compared to RVSS and ASD starting technology. We will also provided are details on the actiVAR switching and control technology, sample event recordings from actual motors starts, as well as motor start voltage sag calculations methods, and more.

The actiVAR is a perfect solution for any site with voltage sag issues due to or from starting large induction/synchronous motors. It boasts a smaller footprint, significantly less expense, easier installation, and lower commissioning costs than traditional ASD starters. Come to this session and learn how the actiVAR can jump start your large motors.

If you want a meeting invite for future Tech Talks click here. You can view this session directly on YouTube here and all tech talks are recorded so you can watch at anytime. For a list with links, click here. NEPSI believes a well-informed customer is our best customer. We are looking forward to another informative session and hope you can join us.