Huanghua Group Co., Ltd. 
Prefabricated Substation
Key Features Feature Description Three Independent Compartments Physically segregated MV switchgear, transformer & LV switchgear compartments ensure safe maintenance, fire containment and operational isolation. Each operates at its own protection class (IP65 / IP54 / IP23). Anti-Misoperation Interlocking Mechanical & electrical interlocks prevent incorrect operating sequences, protecting personnel and equipment during switching. Lift-and-Place Mobility Integrated […]
Send Inquiry Key Features
| Feature | Description |
| Three Independent Compartments | Physically segregated MV switchgear, transformer & LV switchgear compartments ensure safe maintenance, fire containment and operational isolation. Each operates at its own protection class (IP65 / IP54 / IP23). |
| Anti-Misoperation Interlocking | Mechanical & electrical interlocks prevent incorrect operating sequences, protecting personnel and equipment during switching. |
| Lift-and-Place Mobility | Integrated lifting lugs allow transport & positioning as a single module — no disassembly, no on-site civil works. Ideal for temporary & emergency power. |
| Weather-Resistant Housing | Anti-corrosion treatment & electrostatic powder coating as standard. Withstands coastal salt-spray, desert radiation & grassland humidity; custom RAL color on request. |
| Intelligent Thermal Management | Natural ventilation standard; forced ventilation with automatic temperature control optional. Fans activate/deactivate by setpoint — no manual intervention. |
| Reduced Dimensions | Occupies only 1/10–1/5 the area of a conventional civil substation, drastically cutting land acquisition and civil costs. |
| Aesthetic Integration | Diverse external decoration options harmonize with surrounding architecture — a key advantage for urban & commercial deployments. |
| Full IEC Compliance | Compliant with IEC 62271-202, IEC 60076, IEC 61439. TÜV Rheinland certified, CE · ISO 9001. Type test reports available. |
Applications
| Sector | Recommended Config | Value / Rationale |
| Urban / Rural Grid Expansion | HKYBW-12 / HKYBW-40.5, 100–2500 kVA | 1/10–1/5 footprint vs civil substation; ring network compatible. Ideal where land is scarce. |
| Ring Network Distribution | HKYBW with RMU option | 1–6 MV circuits, SF₆-free RMU or VCB, IEC 62271-202 compliant for reliable loop supply. |
| Dual-Power / Radial End | HKYBW with VCB + relay protection | Comprehensive transformer fault & overload protection for critical radial-fed loads. |
| Industrial Plants & Mining | HKYBW-40.5, dry-type option, IP54 transformer | Dust-resistant, anti-corrosion, 62.5 kA peak withstand — built for harsh sites. |
| Renewable Energy (PV / Wind) | HKYBW-24 / HKYBW-40.5, 2500 kVA | Beach/grassland/desert adaptable, pre-assembled for rapid deployment of solar & wind farms. |
| EV Charging Station | HKYBW-12, compact, IP65 MV | Small footprint compact substation perfect for space-tight EV charging hubs. |
| Commercial & Residential | HKYBW-12, oil-immersed, IP65 MV | Aesthetic exterior options, low noise (oil type ≤55 dB) for harmonious urban integration. |
| Emergency / Temporary Power | HKYBW series, lift-and-place | Single-module transport, minimal on-site works — perfect for disaster relief & events. |
| Coastal / Marine / Chemical | HKYBW + special anti-corrosion coating | C5-grade protection, sealed against salt-spray, humidity and vermin. |
| Data Center / Mission Critical | HKYBW-40.5, dry-type, IAC | 40.5kV grid connection, internal arc classified, redundant configurations for high reliability. |
Technical Parameters
General Specifications
| Parameter | Specification |
| Product Model | HKYBW-40.5 Series (up to 40.5kV) / HKYBW-12 Series (up to 12kV) |
| Product Type | Prefabricated Compact Substation (Euro-Style Box-Type) |
| Rated Power Range | 100 – 2500 kVA |
| Rated Frequency | 50Hz / 60Hz (optional) |
| Max. Rated Voltage | 12kV / 24kV / 40.5kV (3 selectable classes) |
| LV Rated Voltage | 0.4 kV (400/230V) |
| Compartments | 3 independent: MV switchgear / Transformer / LV switchgear |
| Ventilation | Natural standard; forced ventilation + auto temp control optional |
| Surface Treatment | Anti-corrosion, electrostatic powder coating, custom RAL |
| Compliance | CE · ISO 9001 |
| Third-Party Cert | TÜV Rheinland (report available) · KEMA/DEKRA (on request) |
| Footprint Advantage | 1/10 – 1/5 of conventional civil substation |
Technical Data by Voltage Class
| Description | Unit | Up to 12kV | Up to 24kV | Up to 40.5kV |
| Max. Rated Voltage | kV | 12 | 24 | 40.5 |
| Transformer Voltage | kV | 12/0.4 | 24/0.4 | 40.5/0.4 |
| Max. Rated Current | A | 630 | 630 | 630 |
| Power Frequency Withstand (1min) | kV | 42 / 42 / 3 | 50 / 50 / 3 | 95 / 95 / 3(2.5) |
| Lightning Impulse Withstand | kV | 95 / 95 / — | 125 / 125 / — | 250 / 250 / — |
| Short-time Withstand Current | kA | 25 / — / 30–80 | 25 / — / 30–80 | 25 / — / 30–80 |
| Peak Withstand Current | kA | 62.5 / — / 63–176 | 62.5 / — / 63–176 | 62.5 / — / 63–176 |
| Rated Breaking Load Current | A | 630 | 630 | 630 |
| Protection Degree | — | IP65 / IP54 / IP23 | IP65 / IP54 / IP23 | IP65 / IP54 / IP23 |
| Noise Level | dB | Oil ≤55 / Dry ≤65 | Oil ≤55 / Dry ≤65 | Oil ≤55 / Dry ≤65 |
| No. of Circuits | — | 1–6 / 4–30 | 1–6 / 4–30 | 1–6 / 4–30 |
| Max. Reactive Power Comp. (LV) | kVAR | 30% of rated power | 30% of rated power | 30% of rated power |
Values listed as ‘HV / Transformer / LV’; LV short-time/peak withstand: 30–80 kA / 63–176 kA.
Applicable IEC Standards
| Standard | Scope |
| IEC 62271-1 | Common specifications for high-voltage switchgear and controlgear |
| IEC 62271-200 | AC metal-enclosed switchgear & controlgear for rated voltages > 1kV & ≤ 52kV |
| IEC 62271-202 | AC prefabricated substations (compact substations) up to and including 52kV |
| IEC 60076 | Power transformers (all parts) |
| IEC 61439 | Low-voltage switchgear and controlgear assemblies |
| IEC TR 62271-208 | Guidance for the extension of the validity of type tests of switchgear |
| IEC 60529 | Degrees of protection (IP Code) |
| IEC 62262 | Degrees of protection against external mechanical impacts (IK Code) |
| IEC 60721 | Classification of environmental conditions |
