Your emphasis on recording test data reflects a high degree of responsibility for the standardized operation and maintenance of the power system. This rigorous approach is the cornerstone of ensuring power grid safety.
Recording secondary circuit test data must adhere to the principles of standardization, traceability, and comprehensiveness to ensure the data is authentic, complete, and reproducible. The following are key recording contents and standardized procedures:
Basic Information: Clearly define the test background.
Equipment Object: Indicate the name and number of the equipment under test (e.g., "#1 Main Transformer Protection Panel", "10kV Outgoing Line Cabinet").
Circuit Type: Indicate the system it belongs to (e.g., relay protection, metering, control, signal circuit).
Test Date and Time: Accurate to the minute (e.g., "2026-03-31 09:00–11:30").
Test Personnel: Double signature confirmation, reflecting a verification mechanism.
Environmental Conditions: Record temperature and humidity (affecting insulation test accuracy), such as "Temperature 22°C, Humidity 65%RH". 2. Test Items and Data: Detailed Records for Each Item
Insulation Resistance Test
Instrument Used: Megohmmeter (Specify model, e.g., "ZC-7 500V").
Test Location: E.g., "Control circuit to ground", "Trip output circuit".
Measured Value: Record a stable reading (e.g., "2.5MΩ").
Acceptance Criteria: As indicated in the regulations (e.g., "≥1MΩ").
Note: In humid environments, this can be relaxed to 0.5MΩ, but must be specified.
