Compact Substations

Space-Saving Compact Substations for Reliable Power Distribution. Engineered for Efficiency, Safety, and Seamless Integration.

Compact Substation / Unitized Substations (USS)

A compact substation (CSS) is a pre-fabricated, enclosed unit that integrates various electrical components, such as transformers, switchgear, and control equipment, into a single compact structure. It is used for transforming and distributing electrical power, typically in applications where space is limited or a modular, ready-to-use solution is required.

Compact Substations of Danish

As the word suggest, solutions for the present need of the world – compact – ready to use – space saving solutions.

Danish Compact Substations are mainly used in Secondary Distribution Systems.

Substation diagram

MV NETWORK

Standards: IEC 62271-202 (IEC 61330) / IS 14786

Salient Features:

  • Pre-fabricated, Factory-built, tested & ready to use
  • Flexible / Customizable to suit client / site needs
  • Also available as VERTICAL TOWER TYPE Compact Substation with Transformer Compartment on top of MV / LV compartment.
  • Medium Voltage Compartment:Equipped with SF6 insulated Ring Main Unit (RMU) upto 36 kV or air insulated switchgear with Vacuum Circuit Breaker (VCB), or Load Break Switch / Switch Fuse Unit
  • Medium Voltage Compartment:Equipped with SF6 insulated Ring Main Unit (RMU) upto 36 kV or air insulated switchgear with Vacuum Circuit Breaker (VCB), or Load Break Switch / Switch Fuse Unit
  • Low Voltage Compartment: Fully customizable as per client needs with options to choose from Air Circuit Breaker (ACB) / Moulded Case Circuit Breaker (MCCB) / Automatic Power Factor Correction (APFC) Panel / Fuse / Metering etc.
  • Options of Metering at Medium Voltage
substation

2500 kVA 33 kV Compact Substation Exported to Ethiopia

Technical Parameters:

Standards
  • Compact Substation
  • MV Switchgear
  • Transformer
  • LV Switchgear
  • IEC 62271-202 (IEC 61330) / IS 14786
  • IEC 60265 / 60694
  • IEC 60076 / IS 2026 / IS 1180
  • IEC 60439
Temperature Class K10
Degree of Protection IP 2X / 5X
Rated Primary Voltage 3.3 / 11 / 15 / 20 / 24 / 33 kV
Rated Power Upto 3500 kVA for Oil Type Trafo Upto 4000 kVA for Dry Type Cast Resin Trafo
Rated Secondary Voltage 0.400 / 0.415 / 0.433 / 0.630 / 0.690 / 11 kV

Key Components of a Compact Substation:

  1. Transformer: Usually an oil-immersed or dry-type transformer for stepping down or stepping up voltage levels.
  2. High-Voltage Switchgear: Handles the incoming high-voltage supply and provides protection through circuit breakers or load break switches.
  3. Low-Voltage Distribution Panel: Distributes the stepped-down voltage to various feeders and loads.
  4. Protection and Control Equipment: Includes relays, meters, and controllers for monitoring and protecting the system.
  5. Enclosure: A robust, weatherproof, and often tamper-proof housing that ensures safety and durability.

Features of Compact Substations

  • Space-Saving Design: Combines multiple functions in a compact footprint.
  • Prefabrication: Manufactured and tested in factories, ensuring quality and quick installation.
  • Plug-and-Play Installation: Requires minimal on-site assembly, reducing setup time.
  • Customizable: Designed to meet specific voltage levels, capacities, and environmental conditions.
  • Safety: Equipped with features to ensure operator and public safety, such as interlocks and fire-resistant enclosures.

Applications of Compact Substations

  1. Urban Areas: Ideal for cities where space is a constraint.
  2. Industrial Plants: Supplies power to factories, warehouses, and industrial zones.
  3. Renewable Energy Projects: Used in solar or wind farms to integrate power into the grid.
  4. Infrastructure Projects: Powers facilities such as airports, metro stations, and data centers.
  5. Temporary Power Needs: Common in construction sites or events requiring short-term power solutions.
2500 kVA 33 kV Compact Substation Exported to Ethiopia

Compact Substation

Advantages of Compact Substations

  • Reduced Footprint: Takes up less space compared to traditional substations.
  • Ease of Maintenance: Centralized access to all components simplifies inspections and repairs.
  • Cost-Effective: Prefabrication and quick installation lower overall project costs.
  • Reliability: Designed to operate in harsh environments with minimal maintenance requirements.
  • Aesthetic Appeal: Often designed to blend into the surrounding environment.

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