Electrical switchgear engineers NOJA Power Switchgear presents a new remotely-mounted HMI panel connected by fibre optic cable to the RC10 cubicle used to control an OSM range Automatic Circuit Recloser (ACR).
Connected by interference-immune fibre optic cable, the HMI panel allows operators to configure multiple NOJA Power ACRs from a single 19” rack in the secure, comfortable and climate-proof environment of a substation control room.
In substation applications, multiple NOJA Power ACRs are used on the incoming and outgoing medium-voltage electricity distribution feeders to protect transformers and other valuable equipment. The ACRs’ RC10 cubicles are installed on substation mounting frames.
However, if a substation engineer is required to configure all the ACRs at a substation, it can take time to move to each cabinet, with additional factors coming into play such as being exposed to the weather and operating in close proximity to hazardous voltages.
The NOJA Power RC10 cubicle remote HMI panel allows control of the ACRs to be transferred to a single 19” rack that can be installed in the substation control room built to house SCADA communications equipment and protection relays. Also available in a wall-mount option, each HMI panel is connected to its respective RC10 cubicle via an interference-immune fibre optic cable and powered from a 12-V DC power supply provided with the remote HMI panel kit.
The remote HMI panels provide several benefits such as allowing substation technicians and engineers to work in an enclosed facility protected from the weather and hazardous voltages; centralising the control and configuration of all ACRs to save time; and allowing substation technicians and engineers to take notes or operate a computer in a comfortable environment where there is access to network information.
The remote capability is especially important during emergencies when members of staff could be on site for many hours.
Neil O’Sullivan, NOJA Power’s Managing Director explains that the remote HMI panel for the RC10 cubicle allows substation engineers and technicians to operate substation ACRs from the safe and relatively pleasant environment of the facility’s control room instead of having to venture out into the yard where the weather and danger from high voltages make the job much more demanding and risky.
Productivity gains can also be expected because the worker can configure the automatic circuit reclosers from a single location rather than having to walk around the substation to each ACR’s control cabinet.
NOJA Power has produced a user guide detailing how to install the remote HMI panel and power supply, and how to connect it to the RC10 cubicle via a fibre optic cable and two modems.