ZIV 7IRD-A - 1. Description; 1.1 General Overview; 1.2 Protection Subsystem Functions; 1.3 Control Subsystem Functions

To Next Page

To Previous Page

1. Description



1.1 General Overview ............................................................................................... 1-2

1.2 Protection Subsystem Functions ........................................................................ 1-3

1.2.1 Non-Directional Overcurrent Protection 3-Phase and Ground ........................... 1-3

1.2.2 Recloser (7IRD-A/J Models) ............................................................................... 1-3

1.2.3 Breaker Failure Protection .................................................................................. 1-3

1.2.4 Open Phase Protection ....................................................................................... 1-3

1.2.5 Residual Current Detection (Neutral Unbalance Unit) ........................................ 1-3

1.3 Control Subsystem Functions ............................................................................. 1-4

1.3.1 Local Control and Status Indication of all Bay Elements .................................... 1-4

1.3.2 Local Recloser Control (7IRD-A/J Models) ......................................................... 1-4

1.3.3 Measurement Presentation ................................................................................. 1-4

1.3.4 Presentation of Local Alarms as Conventional Alarms ....................................... 1-4

1.3.5 Indication of Digital Inputs / Outputs ................................................................... 1-4

1.3.6 Indication of Auxiliary Inputs / Outputs States and Protection LEDs .................. 1-4

1.4 Additional Functions ............................................................................................ 1-5

1.5 Model Selection ................................................................................................... 1-7