Street Light Substation Product Introduction

1. Product Brief Introduction

The street light substation is a compact, outdoor prefabricated power distribution equipment customized for urban road lighting and landscape lighting. It integrates core components such as energy-saving transformers, low-voltage switches, lightning protection, metering, time control/remote control modules. Adopting a compact sealed box structure, it is suitable for electrical functions such as voltage reduction and circuit distribution, and integrates lightning protection and intelligent management. All components are pre-assembled and debugged in the factory, delivered to the site as a whole, and can be put into operation quickly on site. It is a standardized core power distribution equipment for urban road lighting and municipal landscape lighting, perfectly meeting the needs of refined urban construction and intelligent lighting management.

2. Scope of Application

• Urban road lighting: Centralized power distribution for street lights on urban trunk roads, secondary trunk roads, branch roads, ring roads, overpasses, and tunnel entrances/exits.
• Municipal landscape lighting: Power distribution for landscape lights and courtyard lights in urban squares, parks, riverside greenways, street parks, and around urban land parcels.
• Transportation hub lighting: Lighting and auxiliary power supply for highway service areas, toll stations, bus stations, parking lots, and port terminals.
• Industrial park & community lighting: Lighting and power distribution for roads in industrial parks, industrial zones, residential areas, tourist towns, and campuses.
• Rural infrastructure lighting: Reconstruction and new construction projects of street light power distribution for township trunk roads, beautiful rural demonstration villages, and rural tourism highways.
• Voltage level configuration: 10kV high-voltage incoming line, 0.4kV low-voltage outgoing line, covering small-capacity power distribution needs from 50kVA to 400kVA, and a single unit can supply power for 100-500 street lights.

3. Model Definition (Special for Street Lights, Industry Universal Compilation Rules)

The model number of street light substation is compiled by "conventional substation code + street light characteristic code + voltage level + transformer capacity + extended function code". The core model such as YBM-LD-12/0.4-100, each part is clearly defined, adapting to the exclusive demand of street light power distribution:

• YBM: Universal code for prefabricated box-type substations (Y - Prefabricated, B - Substation, M - Sealed type, suitable for outdoor open-air environments).
• LD: Special characteristic code for street lights (L - Light, D - Distribution), a core identifier distinguishing from general industrial/new energy substations.
• 12/0.4: Rated voltage, 12kV (10kV distribution network universal) for high-voltage side, 0.4kV (standard street light voltage) for low-voltage side.
• 100: Rated capacity of main transformer, unit kVA, commonly configured as 50/80/100/160/200/315/400kVA according to needs.
• Extended function code: Z - Intelligent remote control type, S - Time/light control integrated type, F - Lightning protection enhanced type, G - Outdoor anti-corrosion type, T - Dimming type, marking exclusive functions.

4. Main Technical Parameters

4.1 High Voltage Side (10kV Urban Distribution Network Standard)

• Rated Voltage: 12kV (phase voltage 6.9kV), in line with urban distribution network voltage standards.
• Rated Current: 200A/400A (for small capacity, adapting to low load characteristics of street lights).
• Rated Short-Circuit Breaking Current: 12.5kA/16kA (in line with urban distribution network short-circuit level).
• Switch Type: Load switch-fuse combination (cost-effective mainstream) / small vacuum circuit breaker (large capacity type), manual/electric operation.
• Grounding Mode: Neutral ungrounded (conventional configuration for urban 10kV distribution network).
• Lightning Protection: Standard configuration of Class I surge protection device (SPD), nominal discharge current ≥60kA, protection grade IP33.

4.2 Transformer Part (Small-Capacity Energy-Saving Type Special for Street Lights)

• Type: Dry-type SCB15/SCB16 (mainstream, fireproof, low noise), small-capacity optional amorphous core transformer (lower loss, more compact).
• Rated Capacity: 50kVA-400kVA, adapting to the demand for the number of street lights in different road sections.
• Impedance Voltage: 4%-6% (10kV side), adapting to resistive/inductive loads of street lights.
• Connection Group: Dyn11 (in line with urban distribution network standards, adapting to unbalanced power distribution of multi-circuit street lights).
• Insulation Level: Class F (temperature rise limit 100K), low loss and long service life, suitable for long-term outdoor operation.
• Noise Level: ≤40dB (1m away from the box), ultra-quiet design to avoid affecting the surrounding environment of the road.
• Protection Grade: Transformer room IP33, considering ventilation, dustproof and waterproof.

4.3 Low Voltage Side (0.4kV Lighting Distribution Core)

• Rated Voltage: 400V/230V (line voltage/phase voltage), matching the rated voltage of street light fixtures.
• Rated Current: 200A/400A/630A, supporting multi-circuit power supply.
• Rated Short-Circuit Breaking Capacity: 30kA/50kA, meeting the short-circuit protection demand of lighting circuits.
• Outgoing Circuits: 8-32 circuits (customizable), each circuit is independently controlled to support opening/closing by road section and region.
• Switch Configuration: Molded Case Circuit Breaker (MCCB) + Miniature Circuit Breaker (MCB), double protection of overload and short circuit for each circuit.
• Control Function: Standard configuration of time control + light control dual-mode module, optional 4G/5G intelligent remote control, supporting scheduled dimming, light-sensing automatic on/off, and fault alarm.
• Metering Function: Standard configuration of national network certified three-phase multi-function meter, optional sub-circuit metering module, supporting independent accounting of lighting electricity.
• Lightning Protection: Class II surge protection devices for low-voltage incoming line + branch circuits, nominal discharge current ≥40kA, protection grade IP43.

4.4 Intelligent & Cabinet Parameters

• Communication Interface: RS485/Modbus/4G/5G IoT module, supporting connection with urban intelligent lighting platforms and municipal management systems.
• Control Mode: Local manual control, time/light control automatic control, remote platform control, mobile APP control, supporting dimming (optional).
• Cabinet Material: Cold-rolled steel plate + electrostatic spraying + anti-UV coating, thickness ≥2.0mm, anti-aging.
• Auxiliary Configuration: Standard anti-condensation, lightning protection, ventilation devices, ultra-temperature intelligent alarm, reserved maintenance and operation space.
• Overall Protection Grade: IP54 for outdoor standard configuration, IP65 anti-corrosion and waterproof type optional for coastal/rainy areas.
• Installation Size: Compact design, covering area ≤3㎡, height ≤2.2m, adapting to small installation space.

5. Working Conditions

5.1 Environmental Conditions (Adapting to Outdoor Road Scenarios)

• Ambient Temperature: -30℃~+55℃ (temperature-resistant design), adapting to extreme cold in the north, high temperature in the south, and large temperature difference between day and night.
• Relative Humidity: ≤95% (at 25℃), allowing short-term condensation, standard anti-condensation device to prevent internal short circuit.
• Altitude: ≤1000m (mainstream of urban distribution network), customized derating design for altitude >1000m.
• Installation Environment: Outdoor road green belts, lamp poles, sidewalk edges, resistant to dust, rain, snow, wind and sand, slight vibration.
• Special Adaptation: Anti-corrosion coating customization (anti-salt spray) for coastal areas, upgradeable lightning protection for thunderstorm-prone areas.
• Vibration Requirement: Resistant to vibration from road vehicle traffic (acceleration ≤2g), cabinet with anti-vibration buffer structure.

5.2 Electrical Working Conditions (In line with Lighting Distribution Specifications)

• Power Frequency: 50Hz±2Hz, in line with urban power grid frequency standards.
• Voltage Fluctuation: ±7% of rated voltage on high-voltage side, adapting to small voltage fluctuations of urban distribution network.
• Load Characteristics: Adapting to resistive/inductive loads of street lights, supporting intermittent operation (power supply at night, shutdown during the day), resistant to inrush current when street lights are turned on simultaneously.
• Installation Method: Outdoor ground installation (concrete foundation/anti-corrosion support), foundation flush with or higher than the ground, away from waterlogged areas and heavy vehicle rolling areas, flatness of installation site ≤5mm/m.
• Executive Standards: GB/T 17467-2019 "Prefabricated Substations", CJJ 45-2015 "Code for Design of Urban Road Lighting", GB 50057-2010 "Code for Design of Lightning Protection of Buildings".

6. Performance Characteristics

• Compact design, adapting to small spaces: Optimized layout for road scenarios, covering area ≤3㎡, height controlled within 2.2m, can be directly installed in green belts and lamp poles without additional land occupation, perfectly fitting the limited space of urban roads.
• Double-layer protection, safe and reliable for outdoor use: Class I lightning protection on high-voltage side + Class II lightning protection on low-voltage incoming line + branch circuits, dual heavy surge protection design, nominal discharge current ≥60kA, enhanced protection for outdoor road lightning strike scenarios, effectively avoiding damage to lamps and power distribution equipment by lightning strikes.
• Intelligent management and control, enabling smart lighting: Standard time/light control dual-mode module, supporting automatic on/off according to light intensity and time period, optional 4G/5G remote control to realize sectional dimming, scheduled dimming, and fault alarm, connecting to urban smart lighting platform and reducing labor operation costs.
• Multi-circuit independent control, precise power distribution: 8-32 customizable outgoing circuits, each circuit with independent overload and short-circuit protection, supporting separate control of different regions and types of lamps (street lights, landscape lights, marker lights), adapting to complex lighting layout needs.
• Ultra-quiet and low loss, friendly to surrounding environment: Using low-noise energy-saving transformers, operating noise ≤40dB, no oil leakage or odor, no impact on residential and commercial areas around roads; transformer loss reduced by 15%-20% compared with national standard, no reactive power compensation (power factor ≥0.95), reducing lighting energy consumption.
• Weather-resistant and anti-corrosion, adapting to harsh outdoor conditions: Cabinet adopts anti-corrosion cold-rolled steel plate + electrostatic spraying + anti-UV coating, protection grade IP54/IP65, resistant to extreme environments such as -30℃~+55℃, rain, wind and sand, salt spray, with service life ≥15 years.
• Factory pre-testing, quick on-site delivery: All components are pre-assembled and debugged in the factory, tested and qualified, only foundation fixing and incoming/outgoing line connection are needed on site, and it can be put into operation in 2-3 days, greatly shortening the road lighting project construction period.
• Standard metering, convenient management and high efficiency: Standard national network certified metering meter, optional sub-circuit metering to realize independent accounting of lighting electricity, data can be transmitted to municipal management platform, meeting the refined management needs of municipal lighting electricity consumption.
• Anti-electric shock design, stable and reliable operation: High-voltage side anti-misoperation interlock, low-voltage side leakage protection, cabinet with anti-electric shock and anti-external impact design, protection grade IP54/IP65, safe and reliable for outdoor long-term operation, low fault rate.
• Strong customization, covering all scenarios: Capacity 50kVA-400kVA can be selected, and types such as anti-corrosion, lightning protection enhanced, and dimming can be customized to adapt to different lighting scenarios such as urban roads, rural infrastructure, landscapes, and transportation hubs.