Core Testing & Commissioning Responsibilities:

1. Perform Functional Testing: Execute tests on protective relays (electromechanical, solid-state, microprocessor-based) using specialized test equipment (e.g., Omicron, Doble, Megger). This involves injecting voltage and current signals to simulate system conditions (faults, normal operation) and verifying:

• Correct pickup values (minimum operating points).
• Accurate timing characteristics (how fast they operate).
• Correct logic operation (breaker failure schemes, reclosing, transfer trip).
• Proper operation of specific protection elements (overcurrent, distance, differential, voltage, frequency, etc.).

1. Verify Relay Settings: Download settings from relays, compare them against specified engineering settings sheets, and upload correct settings as required. Ensure settings are properly applied and stored in the relay.
2. Commissioning New Equipment: Test and commission new protective relays, control panels, and associated schemes as part of substation construction or upgrade projects. This includes point-to-point wiring checks, functional tests, and integration testing.
3. Routine Maintenance Testing: Perform scheduled periodic testing of existing relays and protection schemes according to utility or plant maintenance standards.
4. Wiring & Circuit Verification: Verify control circuit wiring (AC/DC schematics) against design drawings. Check continuity, polarity (especially for CTs and PTs), and insulation resistance (Megger testing).
5. Instrument Transformer Testing: Perform basic checks or assist in testing Current Transformers (CTs) and Potential Transformers (PTs/VTs), including ratio, polarity, and saturation tests, as their accuracy is critical for relay operation.
6. Trip Path Verification: Verify that the relay correctly operates its output contacts and that these contacts successfully operate the intended device (e.g., circuit breaker trip coil, lockout relay, alarms).

Analysis, Troubleshooting & Documentation:

1. Troubleshoot Malfunctions: Investigate and diagnose issues with protective relays, control circuits, or associated equipment when problems are suspected or after a misoperation.
2. Analyze Test Results: Interpret test data, compare it to specifications and previous results, and determine if the equipment is operating correctly or requires corrective action.
3. Document Test Procedures & Results: Accurately record all test data, procedures followed, settings verified, discrepancies found, and corrective actions taken on standardized test forms or in digital systems.
4. Prepare Test Reports: Compile comprehensive reports summarizing testing activities and findings for engineering review and historical records.

Qualifications and Experience

Diploma/BE in EEE, Minimum 2 years of Relevant Experience.