Technical key - Arc protection - Auto synchronization - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Petersen Coil control - Grid automation - Busbar differential protection (high impedance) - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Transformer protection - 3 winding - Interconnection protection - Generator protection - Power management/Load shedding - Engineering Manual - REX640 Protection and control - PCL6 - IEC

Both a physical IED and an IED object in PCM600 have a technical key. The technical key in the protection relay and PCM600 must be the same, otherwise it is not possible to download a configuration.

Each IED in a PCM600 project and in an entire substation must have a unique technical key. Therefore, it is not possible to set the same technical key for several IEDs in the same PCM600 project.

Note: The protection relay is delivered with a factory default technical key. The validation of the technical keys between PCM600 and the protection relay does not occur if the protection relay contains the factory default technical key.

Note: The technical key property in PCM600 corresponds to the IED name attribute in SCL files. Avoid changing the IED name attribute outside PCM600, because data in PCM600 may get lost when importing the SCL files.

When writing a configuration to the protection relay, PCM600 checks for a mismatch between the IED object and the physical IED technical key. The technical key can be read from the protection relay and updated to PCM600, or the PCM600 technical key can be written to the protection relay. Alternatively, a user-defined technical key can be defined.

Note: Ensure that the IED object in PCM600 has the same IP address as the physical IED to be connected through the technical key.

Note: Change the technical key for an IED object in the Object Properties dialog box in PCM600.