Name: Compact Substation / Packaged Substation
Brand: Urja Techniques

Prefabricated Packaged Compact Substations

Urja Techniques (India) Pvt. Ltd. designs, engineers, and manufactures industrial-grade Compact Substations (Packaged / Unitised Substations) engineered in strict compliance with IEC 62271-202, IS 1180, and IS 2026 standards. Designed for high electrical reliability, personnel safety, and minimal space footprint, our self-contained compact substations integrate High Voltage (HT) Switchgear, a Step-Down Distribution Transformer, and a Low Voltage (LT) Distribution Panel into a single factory-tested enclosure.

Built with over 30 years of transformer manufacturing experience, every substation unit undergoes rigorous testing by independent laboratories such as CPRI and ERDA. Featuring IP54/IP55 weather-proof outdoor protection, heavy-duty hot-dip galvanization, and anti-corrosive powder coating, Urja Compact Substations deliver seamless power distribution across 40+ countries in demanding tropical, desert, coastal, and industrial environments.

Unitised Sub Station 1B

The Unitised Sub Station 1B is a fully modular, factory-assembled unitized substation optimized for medium-voltage industrial and utility power networks. Housing high-grade CRGO copper winding transformers and rugged steel enclosures, it delivers ultra-low operational losses and maximum operational uptime.

Voltage Class:11 kV / 33 kV to 433V

Efficiency:99.9% High Efficiency

Frequency:50 Hz / 60 Hz

Enclosure:Hot-Dip Galvanized / IP54

Winding:Electrolytic Copper Winding

Standards:IEC 62271-202 / IS 1180

Compact Indoor Substation engineered for commercial and industrial buildings

Compact Indoor Substation (Up to 2500 kVA)

Specifically engineered for high-rise commercial structures, data centres, hospitals, and indoor manufacturing plants. Built with fire-retardant materials, safety interlocks, and optimized thermal ventilation channels for safe indoor operation without requiring massive space overheads.

Capacity Range:100 kVA up to 2500 kVA

Primary Voltage:11 kV / 22 kV / 33 kV

Color Finish:Light Grey (RAL 7035) / Custom

Sheet Metal:3 mm Heavy-Duty CRCA Steel

Protection:SF6 / VCB Switchgear Protected

Standard:IEC 62271 / ASTM A123

Compact Transformer Substation

A turnkey outdoor prefabricated substation solution comprising three insulated compartments: High Voltage Switchgear (Ring Main Unit), Distribution Transformer (Oil-filled or Cast Resin Dry Type), and Low Voltage Switchboard with automatic power factor correction (APFC) options.

Capacity Range:100 kVA to 2500 kVA

Coating:Polyurethane / Epoxy Powder Coated

Thickness:3 mm to 8 mm Structurals

Galvanization:IS 2629 / IS 4759 Standard

Welding:ISO 3834 / IS 2825 Certified

Application:Urban Grid & Industrial Power

Distribution Transformer module for Compact Substations

Transformer for Compact Substation

Custom-designed, low-loss step-down distribution transformers optimized specifically for installation inside tight substation compartments. Available in Hermetically Sealed Oil-Filled or Vacuum Pressure Impregnated (VPI) / Cast Resin Dry Type variants with enhanced heat dissipation design.

Power Rating:100 kVA – 2500 kVA

Core Material:High-Grade CRGO / Amorphous

Winding:EC Grade Copper / Aluminum

Design Type:Hermetically Sealed / Conservator

Insulation:Class A / Class F / Class H

Standards:IS 1180 (Part 1) / IEC 60076

500 kVA Compact Substation Unit

Standardized 500 kVA industrial packaged substation ready for immediate installation. Designed for rapid plug-and-play field integration with integral earthing switches, internal lighting, safety interlocks, and surge protection arresters.

Rated Power:500 kVA

Voltage Class:11 kV / 33 kV Step-Down

Surface Finish:Hot-Dip Galvanized + Polyurethane

Height:2100 mm Standard Dimension

Quality Std:IS 1180 (Part 1): 2014 Level

Welding Quality:ISO 3834 Compliant

Standard Substation Technical Specifications

Comparative engineering parameters for international procurement and EPC system design.

Parameter	HT Switchgear Compartment	Transformer Compartment	LT Switchboard Compartment
Rated Voltage Class	11 kV / 22 kV / 33 kV	11–33 kV / 0.433 kV	415V / 433V (Up to 690V)
Switchgear / Equipment Type	SF6 Gas Insulated RMU / VCB	Oil-Filled (Hermetic) / Dry Type (CRT/VPI)	Air Circuit Breaker (ACB) / MCCB Panel
Capacity Range	Up to 33 kV 630A	100 kVA to 2500 kVA	250A to 4000A Busbar Rating
Degree of Protection (IP)	IP54 / IPX4 Outdoor	IP23 (Ventilated) / IP54	IP43 / IP54 Outdoor Rating
Short-Circuit Withstand	20 kA for 3 Seconds	As per IEC 60076-5	50 kA for 1 Second
Enclosure Finish	3mm Galvanized Steel / Powder Coated (RAL 7035 / Custom Marine Paint)
Applicable Standards	IEC 62271-202, IS 1180 Part 1 (2014), IS 2026, ISO 9001:2015, ISO 14001:2015

Key Advantages for Global Procurement

Compact Space Footprint

Requires up to 70% less land area compared to conventional open-yard substations. Ideal for dense urban infrastructure, high-rise buildings, and industrial plants.

Factory-Tested Safety

Fully compartmentalized internal metal barriers prevent fault propagation. Integrated door interlocks ensure personnel protection during inspection and maintenance.

Rapid Field Installation

Delivered as a pre-wired, pre-tested, single-piece unit requiring minimal civil foundation work and short field installation timelines for EPC contractors.

Extreme Weather Endurance

Built with double-roof insulation, anti-condensation heaters, and tropicalized anti-corrosion protection designed for extreme ambient temperatures (-10°C to +55°C).

Low Total Cost of Ownership

High-efficiency CRGO core laminations reduce no-load and load electrical losses, providing massive long-term operational expenditure (OPEX) savings.

Complete International Testing

Type-tested at CPRI and ERDA labs for dielectric withstand, short-circuit impulse, temperature rise, and degree of ingress protection.

Compact Substation