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Box type substation Containerised Substations (CSS)

Containerised Substations (CSS)

Rated voltageMV: 4.16–34.5 kV LV: 480–800 V
Rated capacity2000kva-3600kva
Application scenariosApplication Scenarios for Containerised Substations
Certifications & StandardsIEC 62271‑202, IEEE C57.12.00, IEEE C57.12.28

Containerised Substations (CSS) – Compact, Reliable & Ready-to-Install

Ztelec Yuguang is a leading manufacturer of Containerised Substations (CSS), also known as compact substations, container type transformers, modular substations, or prefabricated substations. Our CSS solutions integrate high voltage switchgear, power transformers, low voltage switchgear, and control systems into a single factory-assembled unit, offering a plug-and-play, cost-effective, and reliable power distribution solution.

Containerised Substations (CSS) | Compact & Container Type Transformers by Ztelec Yuguang

Containerised substations (CSS) are designed for fast deployment, high safety, and minimal civil work. They are ideal for utilities, industrial facilities, renewable energy projects, and remote locations. All components are tested in the factory, ensuring quality and performance before delivery.

Key Features:

  • Factory-assembled, ready-to-install

  • Compact footprint, modular design

  • High reliability and low maintenance

  • Safe operation under harsh environmental conditions

  • Flexible configuration to meet customer requirements

Common Names of Containerised Substations

  • Containerised Substation (CSS)

  • Compact Substation

  • Container Type Transformer

  • Prefabricated Substation

  • Skid Mounted Substation

  • Modular Substation

  • Package Substation

  • Mobile Substation

Technical Specifications of CSS Units

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Item Specification
Application Type Prefabricated MV Transformer Integrated Substation for PV Generation
Manufacturer Meta Power Solutions
Service Life 25 Years
Altitude ≤ 1000 m
Relative Humidity Daily ≤ 95%, Monthly average ≤ 90%
Ambient Temperature –25 °C ~ +45 °C (Monthly mean ≤ +35 °C, Annual mean ≤ +25 °C)
Shockproof Level Horizontal ≤ 0.3 m/s², Vertical ≤ 0.15 m/s²
Outdoor Environment Conditions No fire hazard, serious pollution, chemical corrosion, or violent vibration
Dimensions (L × W × H) 20 ft container: 20 × 8 × 13 ft40 ft container: 40 × 8 × 10 ft  Custom Sizes
Standards Compliance  IEC 62271‑202, IEEE C57.12.00, IEEE C57.12.28
Rated Voltage 15 kV / 24 kV / 38 kV
Rated Current 630 A / 1250 A
Rated Capacity 2000–3600 kVA @ 55 °C
Operating Frequency 50 / 60 Hz
Phase 3‑Phase
Vector Group Y-Y, Δ-Y, Y-Δ, Δ -Δ
Y-Y,δ-Y,Y-δ,δ -δ
Power Frequency Withstand Voltage 50 kV
Rated Impulse Withstand Voltage 125 kV
Rated Short‑Circuit Breaking Current 40 kA
Protection Over‑current protection & grounding protection
High/Low Voltage Rated System MV: 4.16–34.5 kV LV: 480–800 V
Cooling Method ONAN / KNAN / ONAF / KNAF
Transformer Cooling Oil Mineral oil (PCB‑free) or degradable oil (optional)
Circuit Breaker Rating Up to 4000 A
Surge Protective Device Type II

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