3BHE030579R0003 UNITROL 1020 ABB Controller
1) Start value = 1.0 x Un, Positive sequence voltage before fault = 1.1 x Un, fn = 50 Hz, positive sequence undervoltage with nominal frequency injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3BHE030579R0003 UNITROL 1020 ABB Controller
3BHE030579R0003 UNITROL 1020 ABB Controller
The 3BHE030579R0003 UNITROL 1020 is available with two optional displays, a large one and a small one. The large display is suited for IED installations where the front panel user interface is frequently used and a single line diagram is required. The small display is suited for remotely controlled substations where the IED is only occasionally accessed locally via the front panel user interface.Both LCD displays offer front-panel user interface functionality with menu navigation and menu views. However, the large display offers increased front-panel usability with less menu scrolling and improved information overview. In addition, the large display includes a user-configurable single line diagram (SLD) with position indication for the associated primary equipment. Depending on the chosen standard configuration, the 3BHE030579R0003 UNITROL 1020 displays the related measuring values, apart from the default single line diagram. The SLD view can also be accessed using the web-browser based user interface. The default SLD can be modified according to user requirements by using the graphical display editor in 3BHE030579R0003 UNITROL 1020.
3BHE030579R0003 UNITROL 1020 ABB Controller
3BHE030579R0003 UNITROL 1020 ABB Controller
The local HMI includes a push button (L/R)for local/remote operation of the IED. When the IED is in the local mode, the IED can be operated only by using the local front panel user interface. When the IED is in the remote mode, the 3BHE030579R0003 UNITROL 1020 can execute commands sent from a remote location. The 3BHE030579R0003 UNITROL 1020 supports the remote selection of local/remote mode via a binary input. This feature facilitates, for example, the use of an external switch at the substation to ensure that all IEDs are in the local mode during maintenance work and that the circuit breakers cannot be operated remotely from the network control centre.
3BHE030579R0003 UNITROL 1020 ABB Controller
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