Transformer Operation Standards & Overload Rules

Proper transformer operation is crucial. Keep a close eye on temperature, load, and voltage. Neglecting these aspects can lead to premature replacement. Here are the essentials.

Operating Standards

• Temperature: Dry - type transformers should generally stay below 110°C, with a maximum of 120°C. Other models follow their specific guidelines.
• Load: Avoid exceeding the rated capacity. A 10% normal overload is acceptable, but monitor temperature closely.
• Unbalanced Load: When there's a three - phase imbalance, watch the largest - phase current. Adjust single - phase load if necessary.
• Voltage: The power supply voltage should be within 5% of the rated value.

Overload Requirements

• Allowed: Minor overloads with a light pre - overload load are okay.
• Limited: Larger overloads that endanger insulation must be restricted.
• Forbidden: Severe, long - term overloads are prohibited.

Select a good manufacturer to reduce maintenance costs.