Overall Structure & Material Advantages

This 10kV one-inlet three-outlet cable branch box adopts fully bolted assembled cabinet structure, available in stainless steel or aluminum-zinc coated steel plate options. Stainless steel cabinet delivers outstanding anti-rust, anti-corrosion and anti-aging performance for long-term outdoor exposure; aluminum-zinc cabinet with electrostatic plastic spraying is cost-effective and scratch-resistant. The cabinet is fully sealed and divided into independent cable wiring compartments without exposed live parts, equipped with waterproof rubber sealing strips at all door seams and cable entry holes to realize rainproof, dustproof and moisture-proof performance, reaching IP33 protection grade. The internal layout is standardized for one main incoming cable and three branch outgoing cables, with neat cable routing and no cross wiring, greatly facilitating on-site cable connection and overhaul.

Internal Connection & Safety Insulation Performance

The box is equipped with high-conductivity silver-plated copper busbars as the core connecting component, matched with European/American fully insulated silicone rubber plug-in cable joints. All live conductors are completely wrapped by insulating sleeves to achieve touch-safe full insulation, eliminating electric shock risks during operation and inspection杭州海兴电.... The one-in three-out wiring layout realizes centralized shunting of a single main cable into three independent branch power supply loops. Optional supporting accessories include high-voltage live display devices, cable fault indicators and surge arresters, which can quickly reflect live status and locate line faults to improve maintenance efficiency. The bottom of the cabinet reserves sufficient cable laying space, suitable for cable sections ranging from 25mm² to 500mm².

Complete Electrical Performance & Standard Compliance

The equipment applies to AC 50Hz three-phase 10kV urban cable distribution network, rated voltage 12kV, rated main circuit current 630A and branch circuit current 200A. It complies with IEC and GB high-voltage cable accessories standards, with stable short-time withstand current capacity up to 20kA/3s and lightning impulse withstand voltage of 75kV between phase-to-phase and phase-to-earth. It serves as a passive cable shunting node without built-in switching components, focusing on safe cable branch connection; users can configure earthing switches according to site demands to realize safe grounding isolation during maintenance. The cabinet supports outdoor all-weather operation without regular maintenance.

Wide Application Scenarios

10kV one-in three-outlet cable branch box is a key cable shunting device for urban underground cable networks, widely used in multiple scenarios: urban residential communities, commercial plazas, municipal road lighting distribution networks, industrial park cable trunk lines, photovoltaic and wind farm collection cable branches, subway and tunnel auxiliary power supply, and prefabricated substation external cable connection nodes. It simplifies complex cable laying layout, reduces intermediate cable joint quantity and fault points, effectively lowering grid construction investment and improving the stability of multi-branch power supply systems.

Environmental Conditions for Operation

1. Altitude: ≤ 1000 meters above sea level

2. Ambient Temperature: -25℃ ~ +40℃

3. Maximum Wind Speed: ≤ 35 m/s

4. Relative Humidity: ≤ 90% (at 25℃)

5. Seismic Resistance: Horizontal acceleration ≤ 0.4m/s²; Vertical acceleration ≤ 0.2m/s²

6. Site Environment: Free of conductive dust, corrosive, flammable and explosive hazardous substances that damage metal and insulating components

7. Installation Requirement: Free from severe vibration; cabinet vertical inclination not exceeding 3°