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500kVA 800kVA EV Charging Compact Substation 11kV 0.4kV Prefabricated Substation for Public Hub

Product Summary

Product Overview The High Efficiency Step Down Electric EV Charging Compact Substation (500kVA–800kVA, 11kV to 0.4kV) is an all-in-one prefabricated power distribution solution specifically engineered for public EV charging hubs, commercial fleets, and rapid-charging infrastructure. Integrating high...

Key Attributes
Brand Name: HENTG POWER
Place of Origin: CHINA
Certification: IEC60076
MOQ: 1
Payment Terms: L/C,D/A,D/P,T/T
Standard Packaging: Wooden case
Product Custom Attributes
Highlight

500kVA 800kVA Compact Substation

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11kV 0.4kV Prefabricated Substation

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EV Charging Compact Substation

Phase:
Three
Cooling Method:
ONAN
Impedancevoltage:
4% - 7%
Secondary Voltage:
400V
Mountingtype:
Indoor / Outdoor
Noise Level:
Less Than 60 DB
Ambient Temperature:
-40℃~+50℃
Core Material:
100% Cooper
Port:
Any Port In China,SHANGHAI
Productname:
Compact Substation Transformer
Voltagelevel:
10 KV / 11 KV / 20 KV / 22 KV
Rated Frequency:
50Hz,50/60Hz
High Voltage:
10kV,below 35KV,6KV To 35KV
Protection Degree:
IP33/IP34/IP54
Color:
Green/GREY
Product Description
Product Overview

The High Efficiency Step Down Electric EV Charging Compact Substation (500kVA–800kVA, 11kV to 0.4kV) is an all-in-one prefabricated power distribution solution specifically engineered for public EV charging hubs, commercial fleets, and rapid-charging infrastructure. Integrating high-voltage switchgear, a low-loss oil-immersed distribution transformer, and an intelligent low-voltage distribution cabinet within a heavy-duty, weather-resistant enclosure, this compact substation steps down medium voltage (11kV) to low voltage (0.4kV/0.415kV) safely and continuously. Built to handle frequent load surges, continuous high-power output, and extreme outdoor environments, it provides turnkey reliability for urban public charging hubs and highway infrastructure.

Key Selling Points
  • Turnkey EV Hub Integration: Factory-assembled and pre-tested all-in-one design seamlessly bridges medium-voltage utility grids with high-power DC fast chargers, reducing civil work and site installation time by up to 70%.
  • Superior Thermal & Dynamic Resilience: Optimized for continuous peak-load demands and heavy harmonic stresses from multi-port EV chargers without thermal degradation or unexpected power trips.
  • All-Weather Desert & Sandstorm Protection: IP54-rated heavy-gauge corrugated steel cabinet treated with multi-layer anti-UV and anti-corrosion coatings, engineered specifically for high dust, high UV, and extreme heat environments.
  • Advanced Zero-Leakage Oil Retention: Vacuum oil-filling technology paired with anti-aging fluororubber seals and hermetically sealed tanks ensures long-term oil integrity and minimal field maintenance.
  • IEC Compliant & EPC-Ready: Fully compliant with IEC 60076 and IEC 62271-202 standards, supported by a 24-month quality warranty and custom secondary busbar configurations for rapid deployment.
Detailed Technical Specifications & Core Features
1. High-Voltage (HV) Switchgear Compartment
  • Rated Voltage: 11kV (Compatible with 10kV / 12kV utility networks)
  • Configuration Options: SF6 Ring Main Unit (RMU) or vacuum circuit breaker (VCB) with interlocked safety grounding switches.
  • Protection Features: Ingress protection rating up to IP54; equipped with lightning arresters and overcurrent/earth-fault protective relays.
2. Transformer Compartment
  • Rated Capacity: 500kVA / 630kVA / 800kVA (Customizable up to 2500kVA)
  • Voltage Ratio: 11kV / 0.4kV (0.415kV / 0.433kV options available)
  • Core & Winding Design: High-permeability silicon steel core with low no-load losses; 100% high-grade electrolytic copper windings with Class H insulation.
  • Cooling Method: ONAN (Oil Natural Air Natural) self-cooling, supplemented by temperature-controlled forced-air ventilation fans.
3. Low-Voltage (LV) Distribution Compartment
  • Output Voltage: 400V / 415V Three-Phase Four-Wire system
  • Busbar System: T2 copper busbars with high short-circuit withstand capabilities, tailored to feed multiple DC fast charging piles (120kW / 180kW / 240kW / 360kW).
  • Monitoring & Safety: Integrated smart energy meter, automatic capacitor bank for power factor compensation, and surge protection devices (SPD).
4. Enclosure & Environmental Features
  • Housing Material: 2mm+ hot-dip galvanized steel or aluminum-zinc alloy plate with polyurethane powder coating.
  • Thermal Insulation: Double-layer wall design lined with fireproof insulation materials to prevent internal overheating under direct desert sunlight.
Environmental Challenges & Targeted Engineering Solutions
African Desert & High-Dust Challenges Engineering Solutions & Design Features
Heavy Sandstorm & Fine Dust Ingress Double-sealed cabinet doors equipped with labyrinth-type dust filters, sand-proof ventilation louvers, and IP54/IP55 dustproof enclosure integrity.
Thermal Degradation of Oil Gaskets High-grade fluororubber (FKM) gaskets and synthetic O-rings replaced standard rubber, preventing gasket drying, hardening, and oil seepage under 50°C+ ambient temperatures.
Oil Oxidation & Leakage Risks Hermetically sealed corrugated tank design with zero air contact eliminates oil sludge formation, pressure build-up, and seal degradation.
Extreme Sunlight & UV Corrosion Multi-layer C4/C5 grade anti-corrosion marine paint with UV-reflective topcoat to lower internal cabinet temperature and prevent casing rust.
FAQs for African Distributors & EPC Contractors
Q1: How does this compact substation handle high ambient temperatures and solar heat in Africa?

A: The substation features a double-layer insulated cabinet, temperature-controlled forced air cooling, and high-thermal-class ONAN transformer oil, ensuring continuous full-load output up to 50°C ambient without derating.

Q2: What specific anti-leakage measures are incorporated for remote, low-maintenance sites?

A: We utilize hermetically sealed corrugated oil tanks, 100% vacuum oil filling, and anti-aging fluororubber gaskets. Every unit undergoes a 24-hour factory pressure leak test before shipment to guarantee zero leakage.

Q3: Can the LV compartment be customized to connect directly with DC fast chargers?

A: Yes. We customize low-voltage switchgear, copper busbar capacity, circuit breaker quantities, and smart metering according to your EV charger quantities and power ratings (e.g., 60kW to 360kW chargers).

Q4: Does the equipment meet international standards required for utility grid interconnection?

A: Absolutely. The complete substation complies fully with IEC 62271-202 (high-voltage/low-voltage prefabricated substations) and IEC 60076 (power transformers), complete with type test and routine test reports.

Q5: What is the typical lead time and warranty support for overseas EPC projects?

A: Standard manufacturing takes 25–35 days. We offer a comprehensive 24-month quality warranty, wearing parts kits, and remote technical guidance for installation and commissioning.

Q6: How is the substation packaged and transported for long-distance inland logistics?

A: The integrated unit is mounted on a heavy-duty steel skidbase, packed in ocean-worthy wooden crates with moisture-proof wrapping, and sized to fit standard 20ft/40ft HQ shipping containers.

Contact our engineering team today to receive a customized technical drawing and factory-direct quote within 24 hours!

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