Urban Power Distribution:
Cable T-joints, ring networks, and branches for residential communities, commercial centers, industrial parks, municipal roads, streetlights, and traffic signal power supply.
Industry and Infrastructure:
Outdoor cable distribution nodes for mining, metallurgy, petrochemical, ports, rail transportation, and data centers.
Power Grid Renovation:
Replacing overhead lines, implementing cable networks and ring networks, improving supply reliability, reducing space usage, and making investments.
Special Environments:
Harsh outdoor environments, underground ducts, coastal areas with high humidity, dusty conditions, and short-term water immersion.
Function Types:
Standard Type: Cable branching only, no switch.
With Switch Type: Equipped with SF₆ load switches, enabling ring network / dual power source switching and branch circuit disconnection.
Design and Standards:
Complies with GB/T 3906, GB/T 11022, JB/T 10840, IEC 62271, and other high-voltage switchgear standards.
European structure: bidirectional doors, wall-mounted bushings and busbar connections, three-core cables without large-span crossings.
Modular design: Flexible combination of 2-8 incoming and outgoing circuits, supporting ring network, radial, and terminal wiring configurations.
Cabinet Structure:
Material: 2mm high-quality cold-rolled steel / 304 stainless steel, double-layer cabinet body, corrosion-resistant spray coating / brushed finish, lifespan ≥ 20-30 years.
Compartments: Independent busbar room, cable room, fully sealed isolation, no exposed live parts.
Protection: IP33 (standard), IP44-IP54 (custom), rainproof, dustproof, anti-condensation, and flood-resistant.
Cable Entries: Bottom in/out or side in/out, suitable for three-core / single-core cables, with clear wiring layout.
Core Components:
Cable Connectors: Prefabricated silicone rubber / EPDM touchable connectors (DIN 47636), fully insulated and sealed, 630A/1250A.
Switches (Optional): SF₆ insulated load switches, capable of interrupting load current and no-load cable current, with mechanical interlock.
Accessories: Standard surge arresters, short-circuit fault indicators, live-display indicators. Optional fuses and grounding switches.
Production and Certification:
Factory pre-assembled, sealed, and tested, shipped as a complete unit for on-site maintenance-free and fast installation.
Passes type testing, insulation testing, partial discharge, temperature rise, and short-circuit withstand tests, as well as other authoritative certifications.
Top Safety and Reliability:
Fully Insulated and Sealed: No exposed live parts, touch-safe, no need for insulation distance, providing high personal protection.
Fault Isolation: Independent compartments and switch disconnection, single circuit faults do not affect the main grid, minimizing the scope of power outages.
Environmental Endurance: Operational in temperatures from -40°C to +70°C, dustproof, moisture-resistant, corrosion-resistant, and flood-resistant, suitable for all-weather outdoor operation.
Short-Circuit Capability: For 12kV typical: thermal stability 20-31.5kA/3s, dynamic stability 50-63kA, high impact resistance.
Maintenance-Free and Low-Cost:
Truly Maintenance-Free: Sealed structure with no exposed parts, no need for regular cleaning or coating, extremely low lifecycle maintenance costs.
Small Footprint: Compact structure, saving more than 70% of space compared to traditional switchgear stations, reducing civil construction investment.
Quick Installation: Direct outdoor installation or buried underground with a simple foundation, only requiring cable connections on-site, operational within one day.
Flexibility and Strong Expandability:
Flexible Circuits: 2-8 incoming and outgoing circuits, supports ring networks, dual power sources, and multiple branches, adaptable to complex distribution networks.
Easy Upgrades: Standard models can later be equipped with switches, allowing upgrades from "branch boxes" to "ring main units" (RMU).
Cable Compatibility: Compatible with YJV22 and other high-voltage cables, no crossing needed for three-core cables, simplifying construction.
Smart and Operation-Friendly:
Fault Location: Built-in short-circuit/ground fault indicators for quick fault location, reducing repair time.
Live Display: Intuitive live status indication for ensuring safe maintenance.
Expandable Smart Features: Reserved sensor interfaces to support grid automation and remote monitoring upgrades.
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Terminal Power Distribution Equipment
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