NME 300 SCADA Ready High Speed Electrical Actuator

Radius RNO Data Radios
For any remote device, the key to its successful operation is centred on the communication medium between the device and its host. Radius has been providing such communication systems for the electricity industry for decades and has designed a number of radio modems, which provides the security and robustness needed for these applications. Radius provides a fully SCADA integrated communication system. This is specifically designed for Distribution Automation and offers a range of purpose made data radios which utilize a compressed protocol with mesh technology, and high signal recovery resulting in a reliable wide area networked remote control and lower costs. The NME 300 is designed to fit seamlessly into this. The RNO data radios are event triggered to maximize spectrum efficiency and each unit can also act as a repeater forwarding messages to other units. Any message has the ability to pass through four other units before reaching its destination. The RNOs communicate with a central radio, which can be integrated into a SCADA system and can utilize industry protocols such as DNP3 and IEC870.

Fault Sectionalising
The NME 300 has an optional integrated self-sectionalising function. When a line disturbance occurs, a self-sectionalising routine starts. The user can configure how the system works, by setting various timing and reclaim parameters. The device will open within the dead-time of an upstream breaker and will close when the voltage returns for a preset period.  If it closes into a fault, it will open and lockout in the next dead-time. This makes the device ideally suited for spur lines as well as main sections. All information is reported to the customers control centre for immediate real time monitoring.