Induction and synchronous motors draw starting current that is considerably more than nominal current. This can cause voltage sags that exceed permissible levels as determined by supply agreements, cause problems for equipment in the remainder of the plant, and in worst cases cause the motor to stall. Optimised Network Equipment can provide a solution based on rugged thyristor switched capacitor banks that has lower cost compared to other remedies such as variable speed drives, provides near full torque during starting and is very simple to install indoors or outdoors in a switchyard.

This example delivered by GE Grid Solutions to the Colonial Pipeline Company describes the typical problem, alternative remedies and a comparison of advantages and disadvantages for each. Refer to our downloads section for product information.

We can provide support in terms of dynamic system models that will identify potential starting voltage sages, quantify the problem and the details of the required solution. Please contact us for more information.

All our clients have access to the combination of excellent quality products backed by specialist local and international engineering skills to develop and deliver solutions at all levels of the energy business.

For example in this article design aspects of mechanically switched capacitors with damping networks (MSCDN), also called “C-type filters” are presented, with relevant information and recommendations regarding the specification and protection of the filter components. Innovative relaying schemes are presented to ensure reliability and sensitivity for internal faults on the components, in particular air-core reactors, in order to avoid major damage to them and allowing further analysis of the causes of faults.

The combination of our ability to model and understand your electricity network and the support of excellent engineering and production resources internationally provides our clients with un-equalled confidence in the solutions they implement. Contact us and experience it for yourself.

We provide solutions based on strong technical merits and a professional approach to our business.  An example of our approach can be found in our solution for enclosed capacitor banks as described in this article. We understand that buyers, users and suppliers all have somewhat different histories and preferences, and we aim to provide a clear description of the most important things to look out for in the specification, procurement, design, manufacturing, delivery and operation of enclosed medium voltage capacitor banks. We would be delighted to discuss this in more detail with you.

What do you get when you combine the best performing active harmonic filter on the market with on-site evaluation and detailed application engineering support? The MaxSine Compact: it ticks all the boxes:

• Modular design from 50 A to multiples of 100 A
• Flexible mounting in OEM panels, wall or floor mounted cubicles
• Several control options for fast and super fast (<1 ms) compensation
• Neutral current compensation
• Reactive power compensation
• Powerful yet simple setup by means of web browser interface

Applications range from anywhere with electronic loads that are sensitive to power disturbances like hospitals and office blocks, to any fast changing linear or non-linear load.

Optimised Network Equipment has the necessary measurement equipment to evaluate your requirements on site, and can carry out efficient studies to confirm your exact requirements for harmonic filtering – active or passive – no matter what your location or application.