Introduction

NCL GCT capacitors are designed to meet the requirements of the traction industry and for static drive applications. They are built to extremely high standards, offering enhanced properties over other similar looking designs. Wound with a combination of metallised polypropylene film and extended aluminium foil electrodes, in conjunction with a stable, biodegradable liquid impregnant ensures extremely long life and reliable self-healing capabilities are assured. The loss angle (tandf) is extremely low (<0.0003 at 1kHz) and the aluminium foil electrodes provide excellent thermal characteristics.

Application

NCL GCT capacitors are designed for the severe duties of gate-commutated thyristors (GCT's). They are also for tuning applications in the medium frequency range.

Technology

The advanced polypropylene dielectric system of these capacitors has been specially developed for high peak current and surge voltage applications.

Features

• High peak current capability
• Very low inductance
• Very low losses

Encapsulated in fire-resistant epoxy resin, the extremely strong robust mechanical design is suitable for the rigours of traction duty, especially vibration conditions and high ambient temperatures. M8x8 mm axial connections are provided, which are securely bonded to the foil electrodes.

Characteristics

The following parameters are applicable to the range of capacitors which appear on the following pages. As mentioned above, should a particular combination of capacitance value or voltage not be available or should there be a dimensional constraint, please contact us for a design suited to your particular needs.