American-style Pad-Mounted Distribution Substation (PMDS)

Product Display

American-style Integrated Distribution Transformer

The American-style transformer is a series product developed to meet the evolving demands of urban and rural grid construction and modernization. It integrates transformer core, switchgear, fuses, tap changers, and low-voltage distribution components into a compact system, offering configurable solutions for:

• Energy metering
• Reactive power compensation
• Multi-circuit low-voltage distribution

Combined Transformer

Application Scope:

• Rated Parameters:
  • Frequency: 50Hz
  • Voltage: 6–10kV
  • Capacity: 63–1600kVA
• Installation Flexibility:
  • Suitable for both outdoor and indoor deployment.
• Typical Applications:
  • Industrial parks
  • Urban residential complexes
  • Commercial centers
  • High-rise buildings
  • Temporary construction sites

Technical Notes:

1. Design Compliance:
   • Combines ANSI/IEEE standards (e.g., IEEE C57.12.00 for liquid-immersed transformers) with Chinese grid requirements.
2. Structural Advantage:
   • Pre-assembled modular design reduces on-site installation complexity.
3. Environmental Adaptability:
   • Enclosure protection up to IP54 (outdoor models) ensures resistance to dust and water ingress.

Product Specification

Product Features

1. Compact Design:
   • Space-saving footprint with simplified installation.
2. High Efficiency & Robust Performance:
   • Low losses and minimal noise generation.
   • Reduced temperature rise under continuous operation.
   • Overload capacity: Supports over-nameplate loading with strong resistance to sudden short-circuit events.
3. Safety & Reliability:
   • Fully enclosed and insulated structure ensures safe operation in harsh environments.
4. Flexible Configuration:
   • Compatible with both radial (terminal) systems and ring-main network systems, enabling seamless topology switching for enhanced power supply reliability.
5. Cost & Maintenance Advantages:
   • Intuitive operation and low-maintenance design.
   • Short production cycles and cost-effective project implementation.

Operating Environmental Conditions

1. Altitude Limit:
   • Shall not exceed 2000 meters above sea level (m.a.s.l.).
2. Ambient Temperature:
   • Operating range: -25℃ to +40℃.
   • Within any 24-hour period, the average temperature shall not exceed +35℃.
3. Relative Humidity:
   • ≤ 90% at +25℃ (non-condensing).
   • Condensation must be prevented under temperature variations.
4. Installation Alignment:
   • Inclination relative to the vertical plane shall not exceed 5°.
   • Cabinet alignment must comply with GBJ232-2 (Chinese national standard for electrical installation tolerances).
5. Site Conditions:
   • Vibration/Shock: Installation area must be free from severe vibration or mechanical shock.
   • Corrosion Resistance: Environment shall not expose electrical components to corrosive substances.