How to Choose the Right 2000kVA Dry-Type Transformers? The Complete Procurement Guide

Defining Requirements: Selecting Dry-Type Transformers Based on Application and Environment

1.1 Application-Specific Requirements for Dry-Type Transformers

• Data Centers: Require low-loss (SCB18 efficiency class), smart-monitoring-enabled 2000kVA dry-type transformers
• Industrial Plants: Need dustproof and moisture-resistant (IP23), high-temperature-resistant (Class H insulation) dry-type transformers
• Renewable Energy Plants: Require specially configured voltage ratios (e.g., 35kV/0.8kV) for 2000kVA dry-type transformers

1.2 Environmental Factors Affecting Dry-Type Transformer Selection

• High Humidity Environments: Choose dry-type transformers with protection class ≥ IP23
• High Altitude Locations: Must specify altitude correction factor (capacity decreases by 6-8% per 1000m elevation)
• Extreme Temperatures: For -25°C to +40°C, specially designed dry-type transformers are required

Key Selection Parameters: Technical Considerations for 2000kVA Dry-Type Transformers

2.1 Voltage Matching is Critical

• Typical configurations:
  • 10kV/0.4kV: Common for factory power distribution
  • 35kV/10kV: Used for renewable energy plant step-up
  • Custom voltages like 6kV, 20kV available for special requirements

2.2 Short-Circuit Capacity and System Compatibility

• Standard short-circuit impedance: 6% or 8%
• For systems with high short-circuit currents, recommend dry-type transformers with 8-10% impedance
• Provide system short-circuit capacity data to manufacturers for verification

2.3 Protection Class Selection

• IP20: Standard indoor installation
• IP23: Rain and moisture resistant, suitable for semi-outdoor locations
• IP45: Special dust and water protection requirements

Brand vs. Cost Analysis: Procurement Strategy for 2000kVA Dry-Type Transformers

3.1 International Brands vs. Quality Domestic Brands

3.2 Total Cost of Ownership Analysis

• Initial Cost: ~¥500,000-800,000 for domestic 2000kVA dry-type transformers
• Operating Cost: SCB18 can save ~¥30,000-50,000 annually compared to SCB13
• Maintenance Cost: Dry-type transformers save >50% on maintenance vs. oil-immersed types

Procurement Recommendations: Key Considerations for 2000kVA Dry-Type Transformers

1. Prioritize Efficiency: Select SCB18 Tier 1 efficiency dry-type transformers
2. Emphasize After-Sales Service: Ensure manufacturer provides 10+ years technical support
3. Request Type Test Reports: Verify actual transformer performance parameters
4. Consider Expandability: Allow 10-15% capacity margin