Monitoring and Control Terminal UST-10Gc-RN is the basic element of the DT-20RN Remote Terminal for controlling, measuring, signaling and monitoring the status of a medium voltage distribution disconnecting device. Disconnecting switch management can be performed locally via the keyboard and remotely via the communication unit. In addition to the UST-10Gc-RN control function, the LCD can graphically display the selected configuration of medium voltage disconnecting devices with alphanumeric markings of individual device. Any change in the condition of the device dynamically changes the image on the display.
Monitoring and Control Terminal also enables alarm function with 16 LED elements. Different states of the medium voltage disconnecting device and the entire remote control system can be alarmed by their contacts (e.g. feeder fault type indication, SF6 gas status, power failure, low battery voltage, cabinet high temperature etc.).
With an additional IK-15 Fault Indicator connected to unconventional current and / or voltage sensors (NS-20, SS-30) UST-10Gc-RN can detect a short circuit and ground fault in a grounded overhead grid and measure I, U, P, Q, S and f.
If the UST-10Gc-RN is connected with the IK-20 Fault Indicator which is in turn connected to the unconventional sensors, the function of the ground fault and short circuit indication in the non-grounded overhead grid can be realized.
The Monitoring and Control Terminal is a multifunctional element of the DT series Remote Terminals which, depending on the type of grid, allows the automation of the medium voltage smart grid.
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- multiprocessor signal processing
- dynamic display of the status of the disconnecting devices on the graphic LCD
- local or remote control of switchgear (up to two, more on request)
- alarm processing in accordance with DIN 19235 or ISA alarm sequences
- self-test function, local and remote signalling of device availability
- own supply of input contacts galvanically separated from the power supply of the device
- high resistance to transients
- additional IK-15 fault indication and unconventional sensors for detecting ground fault and short circuit in grounded grid and measurement
- by connecting unconventional sensors with the IK-20 (S) Fault Indicator, ground fault and short circuit indication in insulated grids is possible
- small dimensions according to DIN 43700 for mounting instruments
- simple connection using an adapter terminal
- remote control with various communication links (radio, optics, etc.) is possible according to MODBUS RTU (TCP) or IEC 60870-5-101 (104) protocol
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