Alstom / GE MiCOM Agile P444 Distance Protection System Numerical Relay

Part of the MiCOM P40 platform, the Agile P441, P442 and GE MiCOM Agile P444 numerical relay full scheme distance relays provide flexible, fast and reliable protection of transmission and sub-transmission lines. They include full scheme 6-zone distance, plus aided directional earth fault (DEF) and comprehensive backup protection for utility lines and cables at all voltage levels, particularly oriented towards transmission grids.
These distance protection systems are ideal for single circuit breaker application, single and/or 3-pole tripping, and includes a full suite of monitoring, control and recording capabilities plus fault locator, autoreclose and check synchronism.

Alstom P444 Key features:

• Dual algorithm distance operation for maximum fault detection dependability
• Deploy in traditional CT/VT applications, or digital substation architectures with merging units and non-conventional instrument transformers using IEC 61850-9-2 process bus
• Distance to fault location assists dispatching of maintenance crews
• Full-scheme relay offers fast, discriminative response to double-circuit, cross-country and evolving faults
• No internal batteries in GE-branded models – removes a maintenance item and eases air-freight logistics
• NERC CIP cybersecurity including role-based access control (RBAC), RADIUS and SysLog
• Advanced binary inputs comply with the harshest norms for surge withstand, plus the ESI 48-4 EB2 standard. Spurious wiring pickup is eliminated without the use of interposing relays, external resistors or time delays. Battery/wiring faults, switching noise, and induction from long parallel circuits are tolerated without misoperation

The Agile P441, P442 and P444 have a settable quadrilateral operating characteristic that offers consistent 0.85-1.1 cycle zone 1 operating time for general distance application. Customers have a choice of cost-effective built-in teleprotection with InterMiCOM, to implement permissive, blocking and intertripping schemes.
The IEC 61850 redundant Ethernet option offers RSTP and IEC 62439 PRP/HSR – with the HSR support extending for up to 50 nodes in a station bus ring.

MiCOM P40 Agile P444 Key benefits:

• Comprehensive communication options including IEC 61850 and redundant Ethernet ports
• IEC61850-9-2 interface option allows integration within digital substation process bus architectures
• Unparallelled speed, security and selectivity
• User customisable with graphical tools

We offer GE’s century long tradition of power system innovation. From generators to transmission lines, to motors and beyond, we ensure dependable, safe power worldwide. GE offers a wide range of single function and auxiliary relays, along with a portfolio of accessories, to support high performing and reliable protection and control systems. Explore GE numerical Relays portfolio with us!