ट्रांसफार्मर

ट्रांसफार्मर (ट्रांसफार्मर) - व्यापक गाइड

1. ट्रैफो के मुख्य प्रकार

(1) By Cooling Method

• Oil-Immersed Trafo

• Uses insulating oil for cooling, उच्च-वोल्टेज और उच्च-क्षमता अनुप्रयोगों के लिए उपयुक्त (जैसे, ग्रिड सबस्टेशन).

• सामान्य मॉडल: ओनान (natural cooling), बंद (forced air cooling), OFAF (forced oil and air cooling).

• Dry-Type Trafo

• Oil-free design, insulated by air or resin, ideal for fire-sensitive environments (जैसे, अस्पताल, डेटा केंद्र).

• सामान्य मॉडल: एससीबी (epoxy resin-cast), एसजी (open-type).

(2) By Application

• Distribution Trafo

• वोल्टेज स्तर: 10kV/0.4kV, used for end-user power supply (जैसे, residential areas, कारखाने).

• Power Trafo

• Voltage levels ≥110kV, used in transmission networks (जैसे, substation main transformers).

• Special Trafo

• Includes rectifier transformers (for electrolysis), mining transformers (explosion-proof design), वगैरह.

                     

2. मुख्य विशिष्टताएँ

3. अनुप्रयोग

• Power Systems: Voltage step-up/down, grid interconnection.

• औद्योगिक: Power supply for motors, भट्टियां (custom impedance may be required).

• नवीकरणीय ऊर्जा: PV/wind grid integration (must withstand harmonics).

• Rail Transit: Traction transformers (25kV/50Hz).

4. Selection Guide

• Indoor Installation: Prefer dry-type (fireproof) or fully sealed oil-immersed.

• Outdoor Installation: Oil-immersed (protection class ≥IP55).

• High Load Fluctuations: Choose models with strong overload capacity (जैसे, ONAF cooling).

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5. अक्सर पूछे जाने वाले प्रश्न

क्यू: How to choose between oil-immersed and dry-type transformers?
ए: Oil-immersed offers lower cost and higher capacity but requires fire protection; dry-type is safer for confined spaces.

क्यू: How to calculate required capacity?
ए: Sum all load power (केवीए) and reserve 20%~30% margin.

क्यू: How to reduce transformer noise?
ए: Select low-noise designs (जैसे, step-lap core) or install soundproof enclosures.