Non-Aided Schemes - GE MiCOM P40 Agile Technical Manual

Single breaker current differential (with distance)

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Chapter 9 - Non-Aided Schemes

NON-AIDED SCHEMES

This product provides Distance protection. The Distance protection has been designed for use as a standalone

non-unit protection, or for use with communications systems to provide unit protection (Carrier Aided schemes).

Standalone operation provides basic scheme Distance protection (e.g. instantaneous Zone 1 operation, delayed

Zone 2 protection and further delayed Back-up protection, etc.). It also implements some special standalone

schemes that don't require communications. These are known as Non-Aided Distance Schemes.

The non-aided schemes provided in this product can be divided into the following categories:

Basic schemes

Trip On Close schemes

Zone 1 Extension scheme

Loss of Load scheme

The settings for these Non-Aided Distance Schemes are located in the SCHEME LOGIC column.

P54x1i-TM-EN-1

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