Transformer Preservation and Storage || Electrical QC || SAES-P-121 and NEC 459 || Dry, Oil, Power

Long-Term Storage and In-Depth Inspections (Monthly Checks)

Focus: This section details the more comprehensive monthly inspections required for transformers in long-term storage, emphasizing preventative maintenance.
Key Points:
Continue indoor storage in a suitable environment.
Repeat the physical checks for damage.
Monitor oil level, temperature, and pressure gauges for any anomalies.
Inspect relays for proper operation.
Check the condition of silica gel in breathers (if applicable) for moisture absorption.
For extended storage periods, conduct thorough checks for oil leakage and ensure proper grounding installation.
Continue to verify that the internal connection are correct.
Continue to verify nameplate data.
Maintain proper covering.

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