Load Break Switch IDD-LBC

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Technical specifications

Intelligent Digital Load Break Switch - IDD-LBS 

The IDD-LBS load break switch is designed for remote operational sectionalizing of overhead lines and selective detection of stable and unstable faults, including all types of earth faults.

The IDD-LBS load break switch enables line switching under normal conditions at currents up to 1000 A. Thus, it is possible to disconnect the load and sectionalize the line without switching off upstream switches or reclosers.

The load break switch provides a visible break between equipment taken out for maintenance and energized equipment.

IDD-LBS load break switch capabilities:

• selective detection of all types of emergency situations in networks with compensated, isolated, resistive and solid grounded neutral;
• fixing the direction of the emergency current flow — to the supply substation/from the supply substation;
• rapid wireless transmission of information about the current state of overhead lines and load break switch;
• automatic (in the auto-recloser cycle), or by operator command, disconnection of the damaged section of the line;
• automatic shutdown and isolation of the OHL damaged section while maintaining voltage on the undamaged sections when working in a complex of devices including our KOMORSAN system (Software and hardware complex FLISR) ;
• operational switching in the distribution network in normal and post-emergency operation modes ;
• system monitoring after completion of repair work and restoration of voltage;
• performing the function of a network Automatic Load Break Switch when the overhead line is ringed;
• ability to disconnect the load and partition the line without disconnecting the upstream switches or reclosers.

Benefits:

• Reduced number of disconnected users – high selectivity of the IDD-LBS load break switch, combined with KOMORSAN, pinpoints the damaged section.
• Faster restoration – fault detection time is reduced by more than 8 times.
• Visible break – provided by a vacuum load break switch and disconnector.
• Selective fault detection – for all fault types in networks with any neutral grounding type.
• Fault direction recording – identifies whether fault current flows to or from the supply substation.
• Automated or remote fault isolation – damaged line section can be disconnected automatically (within the auto‑reclosing cycle) or by remote command.
• Network ATS functionality – acts as an Automatic Transfer Switch when closing a distribution line to form a loop.
• Load switching and line sectionalizing – without tripping upstream circuit breakers or reclosers.
• Wide operating temperature range – suitable for various climatic conditions.
• 48‑hour battery backup – ensures functionality during power loss.

Complete set of IDD-LBS:

• Load switch;
• Control cabinet;
• Set of FPIs BL

The load switch consists of a vacuum switch that allows you to turn off the load currents and a disconnector that creates a visible gap. ATRIY equipment is an analogue of Auguste switching equipment (Ensto).

Switch operation is possible both in automatic and manual mode.

Data transmission and control is carried out via GSM communication channel according to IEC 60870-5-104 protocol.