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CHAPTER 8: APPLICATION OF SETTINGS CURRENT DIFFERENTIAL (87L) SETTINGS

L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 8-7

Figure 8-4: Breaker-and-a-half application

2. The CTs and VTs are configured according to the following ratios and connections (EnerVista UR Setup example

shown).

3. The sources are configured as follows.

Source 1:

– First current source for current differential

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GE L90 Specifications

General