ABB REM 610 Operator's Manual

Also see for REM 610: Operator's manual Product guide Installation manual Technical reference manual Product guide

ABB REM 610 Operator's Manual Manual pdf 51 page image

515. Commissioning and maintenanceThe relay should be subject to regular tests and maintenance inaccordance with national regulations and instructions.Prior to commissioning, the functionality of the application-specific relayconfiguration and settings have to be tested.During relay commissioning, the operation of short-circuit and ground-faultprotection is to be tested by using secondary injection testing to secure personalsafety. Additionally, correct operation of input and output signals to and from therelay should be verified.The relay is a numerical protection relay with functionality implemented in the relaysoftware configuration. Software functionality does not change over time and therelay performs extensive self-supervision during operation. Therefore, it is notnecessary to perform extensive relay testing during periodic maintenance.When the protection relay is operating under the specified conditions (refer to theTechnical Reference Manual), the manufacturer recommends preventivemaintenance to be performed every five years. This periodically performedpreventive maintenance is to be carried out to secure correct and safe operation ofthe relay. When performing preventive maintenance, the correct functionality of therelay is to be verified as well as the wiring circuitry to and from the relay.If the environmental conditions at the relay operating site differ fromthose specified, for instance temperature and humidity, or if theatmosphere around the relay contains chemically active gases or dust,the relay ought to be visually inspected.At the visual inspection, the following should be observed:* Signs of mechanical damage on the relay, contacts and relay case.* Rust spots or signs of corrosion on the terminals or case.Do not open the secondary circuit of a current transformer during anyphase of the testing when the primary circuit is live. The high voltagegenerated by an open CT secondary circuit may be lethal and damageinstruments and insulation.5.1. Commissioning instructionsRelay commissioning is carried out to confirm correct operation of the relay when itis taken into use.Motor Protection RelayOperator's Manual - ANSI versionREM 610REM 6101MRS755538