+86 15852255369
sales@unitatransformer.com
Proper installation of distribution transformers is the primary step to ensure their safe and stable operation. Non-standard installation can not only affect equipment performance but may also lead to serious safety hazards. This article details the standard procedures, technical specifications, and precautions for distribution transformer installation, providing professional guidance for project implementation.
1. Pre-Installation Preparations
1.1 Site Survey and Measurement
- Environmental assessment: Check if the installation site meets technical requirements
- Space measurement: Ensure sufficient space for operation and maintenance
- Foundation acceptance: Verify that foundation dimensions and strength meet design requirements
1.2 Equipment Inspection and Acceptance
- Visual inspection: Check for any damage or deformation of the transformer exterior
- Document verification: Review product certificates, test reports, and other technical documents
- Accessory inventory: Confirm all accessories are complete and in good condition
2. Installation Process
2.1 Foundation Construction and Acceptance
- Foundation strength meets design requirements
- Embedded parts are accurately positioned
- Grounding grid construction completed and accepted
2.2 Transformer Positioning
- Use professional lifting equipment
- Ensure smooth lifting and positioning
- Implement securing measures immediately after positioning
2.3 Accessory Installation
- High and low voltage bushing installation
- Cooling device installation
- Protection device installation
2.4 Electrical Connections
- Busbar connections
- Cable termination fabrication
- Grounding system connections
3. Key Technical Requirements
3.1 Safety Distance Requirements
- Distance between transformer and buildings: ≥0.8 meters
- Distance between transformers: ≥1.5 meters
- Maintenance passage width: ≥1.0 meters
3.2 Grounding System Requirements
- Ground resistance value: ≤4Ω
- Grounding grid burial depth: ≥0.8 meters
- Ground wire specifications: Meet design requirements
3.3 Sealing Treatment Requirements
- All sealing surfaces clean and flat
- Use specialized sealing materials
- Tighten sealing bolts according to torque requirements
4. Common Installation Issues and Preventive Measures
4.1 Lifting Operation Issues
- Problem: Improper lifting point selection causing equipment deformation
- Prevention: Use specialized lifting tools with even force distribution
4.2 Positioning Deviation Issues
- Problem: Excessive positioning deviation
- Prevention: Pre-mark positioning lines and use measuring instruments
4.3 Connection Process Issues
- Problem: Insufficient tightening torque for connection bolts
- Prevention: Use torque wrenches and tighten according to standard torque values
5. Post-Installation Inspection and Testing
5.1 Mechanical Performance Inspection
- Check all fasteners
- Inspect accessory installation quality
- Check sealing performance
5.2 Electrical Performance Testing
- Insulation resistance testing
- DC resistance testing
- Transformation ratio and vector group testing
5.3 Protection System Debugging
- Protection setting verification
- Alarm signal testing
- Interlock function testing
6. Safety Precautions
6.1 Personnel Safety
- All operators must be certified
- Strictly implement safety operating procedures
- Provide necessary safety protection equipment
6.2 Equipment Safety
- Prohibit outdoor installation work during rainy weather
- Strictly implement dust and moisture prevention measures
- Implement product protection measures during installation
6.3 Environmental Safety
- Install safety warning signs
- Maintain clean construction site
- Implement fire safety measures
Conclusion:
The installation quality of distribution transformers directly affects the safety and stability of the entire power system. Construction must strictly follow specification requirements to ensure each环节 meets technical standards. It is recommended to select professional installation teams, use qualified installation materials, and implement full-process quality control. Only in this way can a solid foundation be laid for the long-term stable operation of transformers.