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MiCOMho P443 and P445

The MiCOMho provides fast, highly selective protection for overhead lines, and the capacity to trip and isolate any faulty circuit.

Transmission and distribution systems are essential for the safe, sure routing of power from generation sources to consumers. However, exposed overhead lines transporting power are by nature sometimes vulnerable and prone to fault. In the case of a faulty circuit, the MiCOMho range provides speedy protection to trip and isolate it, thereby preventing further damage.

Multiple main protection elements and simplified application

The MiCOMho P443 and P445 relays operate with advanced load blinding and disturbance detection techniques, such as power swing blocking, to ensure stability when no tripping is required.

Whether protection is required for lines, cables or hybrids of grounded transmission and distribution circuits, the MiCOMho P443 and P445 relays’ characteristics allow for versatile deployment.

Each relay model contains multiple main protection elements: Distance, delta directional comparison protection, and directional earth/ground fault unit protection (DEF). This permits simplified application and spares holding, because the MiCOMho can be adopted as the standard protection platform.

Reduced setting requirements, integral teleprotection

MiCOMho P443 provides sub-cycle fault clearance from 0.7 to 1 cycle. Via a simple set mode, the relay determines its own settings from protected line data. Each version is equipped with power swing blocking. MiCOMho also includes integral teleprotection via a MODEM, fiber or MUX channel.

Associated Training Courses

High Performance Distance Protection MiCOMho P443 and P445 P443 - Software Version 0540 P445 - Software Version 35 P443
 

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