Product Introduction: American-Style Pad-Mounted Distribution Transformer (Compact Substation) I. Full Product Name (Standard) Full Chinese Name: Compact Substation (American-Style Pad-Mounted Distribution Transformer) Full English Name: Pad-Mounted Distribution Transformer (American-Style Compact Substation) Standard Codes: JB/T 10217-2013 ‘Modular Transformer’, GB/T 17467, IEC 60076, ANSI C57.12.34, IEEE C57 II. Product Definition and Structure A fully integrated outdoor enclosure incorporating a high-voltage load switch, plug-in fuses, backup protection fuses, the oil-immersed transformer body, and low-voltage distribution/metering/compensation units; the high-voltage/transformer compartment is fully sealed and oil-immersed, whilst the low-voltage compartment is a separate, fully insulated and sealed compartment. This compact outdoor distribution equipment is installed directly on the ground (base-mounted) and does not require a dedicated distribution room. III. Core Models (Standard Series) Domestic Model: ZGS11‑□/12‑0.4 (Z = Combined, G = High Voltage, S = Three-phase, 11 = Loss Class, □ = Capacity in kVA, 12 kV High Voltage / 0.4 kV Low Voltage) American Model: Pad-Mounted 3-Phase Distribution Transformer Typical Specifications: - Rated capacity: 50 kVA ~ 2500 kVA (three-phase) - Rated voltage: High voltage 10 kV (6 kV/12.47 kV/35 kV), Low voltage 0.4 kV (0.48 kV) - Frequency: 50/60 Hz - Connection Group: Dyn11 / Yyn0 - Tap Range: ±2×2.5% (5-position no-load tap changer) - Cooling: ONAN (Oil-immersed natural convection) - Insulation: Oil-immersed, Insulation Class F, Temperature Rise 65K - Protection Rating: IP43 / IP54 (Outdoor corrosion-resistant) IV. Key Technical Parameters (Standard) Parameter Specification Rated Capacity 50, 100, 160, 200, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 kVA High-voltage side 6 kV / 10 kV / 12.47 kV / 35 kV Low-voltage side 0.4 kV / 0.48 kV Impedance voltage 4% ~ 6% (depending on capacity) No-load losses: Compliant with S11/S13/S20 energy-saving standards Load losses: Compliant with GB/T 1094, IEC 60076 Insulation level: LI75kV/AC35kV (10kV class) Protection: IP43, anti-corrosion coating, stainless steel/galvanised steel enclosure Protection: High voltage: 2/4-pole load switch + plug-in fuse + backup fuse; Low voltage: Moulded case circuit breaker + metering + reactive power compensation Safety devices: Pressure relief valve, oil temperature gauge, oil level gauge, fully sealed oil tank with leak protection V. Core Advantages (Exhibition Professional Edition) 1. Extremely compact, small footprint: Volume is only one-third that of European-style substation units; installed directly on the ground, suitable for streets, industrial parks and green belts; no civil engineering or machine room required 2. Fully sealed and maintenance-free: High-voltage components are oil-immersed; oil tank has no oil reservoir; fully sealed to prevent oxidation; operational lifespan ≥30 years; reduces operation and maintenance costs 3. Safe and Reliable: Fully insulated dead-zone structure, dual-fuse full-range protection, anti-misoperation interlocks; suitable for ring network/terminal power supply with convenient switching 4. High Efficiency and Energy Saving: Utilises S13/S20 low-loss silicon steel/coiled cores, reducing no-load losses by over 30%, compliant with Class 1 energy efficiency standards 5. Environmentally friendly: Low noise (≤55dB), optional eco-friendly ester oil, corrosion-resistant and weather-resistant, suitable for harsh outdoor conditions 6. Flexible adaptation: Supports ring network/radial power supply, customised solutions for PV/wind power/charging stations/municipal/industrial and mining applications VI. Application Scenarios Urban distribution networks, residential estates, commercial complexes, industrial parks, solar/wind farms, charging points, data centres, municipal street lighting, rail transport, temporary construction power supply VII. Certifications and Warranty Certified to ISO 9001, ISO 14001, CE, UL, type testing, short-circuit withstand, and partial discharge testing; 2-year warranty, lifetime maintenance