GE Multilin B30 Bus Differential System 1-191 GETTING STARTED 1.5 USING THE RELAY1The settings for the relay can be programmed manually (see Chapter 5) via the faceplate keypad or remotely via theEnerVista UR Setup software (see the EnerVista UR Setup help file).1.5.5 RELAY PASSWORDSIt is recommended that passwords be set for each security level and assigned to specific personnel. There are two usersecurity access levels, COMMAND and SETTING.1. COMMANDThe COMMAND access level restricts the user from making any settings changes, but allows the user to perform the fol-lowing operations:• Change state of virtual inputs• Clear event records• Clear oscillography records• Operate user-programmable pushbuttons2. SETTINGThe SETTING access level allows the user to make any changes to any of the setting values.See the Changing Settings section in Chapter 4 for complete instructions on setting security-level passwords.1.5.6 FLEXLOGIC CUSTOMIZATIONFlexLogic equation editing is required for setting user-defined logic for customizing the relay operations. See the FlexLogicsection in Chapter 5.1.5.7 COMMISSIONINGThe B30 requires minimal maintenance after it is commissioned into service. Since the B30 is a microprocessor-basedrelay, its characteristics do not change over time. As such, no further functional tests are required.The B30 performs a number of continual self-tests and takes the necessary action in case of any major errors (see theRelay Self-tests section in chapter 7). However, it is recommended that B30 maintenance be scheduled with other systemmaintenance. This maintenance can involve in-service, out-of-service, or unscheduled maintenance.In-service maintenance:1. Visual verification of the analog values integrity, such as voltage and current (in comparison to other devices on thecorresponding system).2. Visual verification of active alarms, relay display messages, and LED indications.3. LED test.4. Visual inspection for any damage, corrosion, dust, or loose wires.5. Event recorder file download with further events analysis.Out-of-service maintenance:1. Check wiring connections for firmness.2. Analog values (currents, voltages, RTDs, analog inputs) injection test and metering accuracy verification. Calibratedtest equipment is required.3. Protection elements setting verification (analog values injection or visual verification of setting file entries against relaysettings schedule).4. Contact inputs and outputs verification. This test can be conducted by direct change of state forcing or as part of thesystem functional testing.5. Visual inspection for any damage, corrosion, or dust.6. Event recorder file download with further events analysis.NOTE
