Compact Substation

EV Charging Substation

Brand: HENGFENGYOU
Series: Charging Substation Series
USES: Dedicated power step-down, distribution, and DC auxiliary control for electric vehicle (EV) charging plazas, public fast-charging stations, commercial fleet depots, and highway service areas
Country of origin: China
Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
Certification: ISO9001、CB、CE、KEMA

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EV Charging Substation Overview & Working Principle

The EV Charging Substation (EV Charger Compact Substation) from HENGFENGYOU ELECTRIC is a specialized, highly integrated power distribution solution engineered specifically to power high-capacity electric vehicle (EV) fast-charging infrastructure. By stepping down medium-voltage grid power (11kV, 15kV, 22kV, 33kV) to low-voltage AC (0.4kV / 0.415kV), it delivers stable, high-current electricity to multiple fast DC chargers and AC charging piles without overloading the main power grid.

Unlike conventional distribution box transformers, this substation integrates an advanced Microcomputer High-Frequency DC Panel (DC Screen with RS485/CAN communication interfaces). The DC panel provides uninterruptible DC control power to the high/low voltage switchgear operating mechanisms and microcomputer protection relays. This ensures real-time remote monitoring, automatic battery management, fault isolation, and uninterrupted power operation across commercial charging depots, highway service stations, and urban EV plazas. Full OEM/ODM engineering customization is supported.

Implementation Standards: IEC 62271-200, IEC 60076, IEC 61851, GB/T 17467, ISO9001, CE, UL, CSA approved.
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EV Charging Substation Technical Specifications & Parameters

Technical Parameter	EV Charging Infrastructure Details & Options
Product Series / Model	EV Series Charging Station Prefabricated Substation
Rated Power Capacity	500 kVA – 5000 kVA (Standard fast-charging capacity: 630kVA – 2000kVA)
Primary Voltage (HV Side)	11 kV, 15 kV, 20 kV, 22 kV, 33 kV, 35 kV
Secondary Voltage (LV Side)	0.4 kV, 0.415 kV, 0.69 kV (Multi-circuit feeder outputs)
Integrated DC Auxiliary Panel	Microcomputer high-frequency DC screen with smart battery management
Transformer Options	Low-loss Dry-Type Cast Resin / Fully Sealed Oil-Immersed Transformer
HV Switchgear Type	Ring Main Unit (RMU) with Vacuum Circuit Breakers (VCB)
Ambient Temperature Range	Heavy-duty climate resistance: -45°C to +45°C
Altitude Endurance	Standard ≤ $\le 1000\text{m}$ ; High-altitude custom design up to 4000m
Enclosure Protection Rating	IP54 / IP65 outdoor dust-proof and waterproof housing

Core Advantages & Features of EV Charging Compact Substations

1. Integrated Smart Microcomputer DC Panel

Features a built-in high-frequency DC screen with communication interfaces, providing dedicated DC power for switchgear motor drives, intelligent meters, and protective relays.
Automates battery floating charge/equalizing charge cycles and supports remote SCADA telemetry to prevent unexpected power tripping during peak EV charging hours.

2. Heavy-Duty Capacity & High Grid Stability

Engineered to handle high peak load fluctuations and harmonic distortion caused by multi-station DC fast chargers (120kW–360kW+).
Low-loss transformer core paired with reactive power compensation cabinets minimizes voltage drop and optimizes energy efficiency during full-load charging.

3. Extreme Ambient Adaptability & Modular Deployment

Operates reliably in harsh climates ranging from arctic frost (-45°C) to extreme desert heat (+45°C) with forced ventilation and anti-condensation heating systems.
Modular, pre-tested factory assembly drastically cuts site installation time, enabling turn-key commissioning for EV charging network operators.

Ordering Instructions & Technical Requirements

To receive a tailored technical proposal and fast direct factory quote within 24 hours, please supply:

Primary single-line diagram (SLD) and secondary control circuit schematics.
Total EV charging station power demand (kVA/MVA) and required number of LV feeder circuits.
Primary voltage level (11kv to $33\text{kV}$ ) and secondary operating voltage (400v/415v).
Preferred transformer type (Dry-type cast resin or Oil-immersed) and enclosure material/RAL color.
Site environmental parameters (altitude if over 1000m, extreme ambient temperature range).

EV Charging Substation Procurement & Engineering FAQ

Q1: What is the standard lead time and manufacturing delivery schedule for EV charging substations?

A: Standard modular components and stock transformer units can be dispatched within 7 to 30 days. For fully customized EV charging substations with specific LV breaker configurations, smart DC panels, or large capacities (up to 5000kVA), the complete manufacturing and testing delivery cycle is 75 to 90 days with fast global shipping.

Q2: What warranty coverage and technical support do you provide?

A: We offer a standard 1-year (12 months) comprehensive factory quality warranty. To support long-term EV infrastructure investments and municipal charging contracts, warranty extensions up to 5 years are available upon request, backed by remote software diagnostics and fast spare-part supply.

Q3: Are HENGFENGYOU ELECTRIC EV charging substations certified for commercial grid connection?

A: Yes. All our substations are produced under ISO9001 quality systems and strictly adhere to international codes including IEC 62271-200, IEC 60076, and IEC 61851. Our products hold CE, UL, CSA, and CCC certificates, ensuring seamless approval by local power utilities worldwide.

Q4: Why is an integrated DC panel (DC screen) necessary in an EV charging substation?

A: High-power EV charging plazas experience rapid load changes. An integrated microcomputer DC panel provides an independent, uninterruptible DC power supply for the high-voltage circuit breakers and digital protection relays. This guarantees that protective switches can trip instantly during grid faults, even if AC power is temporarily lost.

Q5: Can these substations handle high-altitude or extreme temperature environments?

A: Yes. Standard models operate in ambient temperatures from -45°C to +45°C. For high-altitude EV charging stations along highway corridors or mountain routes, we offer customized insulation components and expanded transformer cooling systems that operate reliably at altitudes up to 4000 meters.

Q6: Can the substation integrate with renewable solar PV panels or energy storage systems (BESS)?

A: Absolutely. Our EV charging substations can be customized with multi-input busbars to interface directly with solar PV inverters and battery energy storage systems (BESS), creating a green "Solar-Storage-Charging" microgrid station for sustainable mobility.