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| Figure 13-9 (cont.) Directional overcurrent relays: (B) overcurrent and directional elements. |

| electric system so protected, whether normal or abnormal, must equal the current flowing away from it so long as no fault exists within that part. Transient currents or power losses within the part of the system being protected are taken care of by the setting of the relay. |

| This type of protective relayingusually used to protect equipment such as generators, buses, regulators, and motorsis perhaps most often used in |

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