Essential details
Quantity(pieces):1
Volume:13.86 m³
Size:L(1100)*W(360)*H(350) cm
Shipping:Ocean Shipping
Package Description:wooden case
Product Introduction
The 35kV box-type substation (35kV box substation / prefabricated substation) is a compact set of substation equipment that integrates 35kV high-voltage distribution, main transformer voltage reduction, low-voltage distribution, protection and monitoring functions into an outdoor sealed box. It replaces traditional civil construction substations and enables factory prefabrication and rapid on-site commissioning.
I. Product Positioning and Application Scope
Voltage level: 35kV on the high-voltage side (maximum operating voltage 40.5kV), and 10kV/0.4kV on the low-voltage side, suitable for three-phase AC 50Hz distribution networks.
Core functions: 35kV power reception → main transformer voltage reduction → 10kV/0.4kV power distribution and protection, capable of single busbar, single busbar sectioning and other wiring.
Typical scenarios:
Urban distribution networks, industrial parks, commercial complexes, data centers
35kV collection and boosting stations for wind farms / photovoltaic power stations
Temporary construction sites, mines, oil fields, power supply in remote areas
Renovation of old residential areas, emergency power supply, rapid capacity expansion
II. Core Technical Parameters (General Configuration)Voltage level: 35kV on the high-voltage side (maximum operating voltage 40.5kV), and 10kV/0.4kV on the low-voltage side, suitable for three-phase AC 50Hz distribution networks.
Core functions: 35kV power reception → main transformer voltage reduction → 10kV/0.4kV power distribution and protection, capable of single busbar, single busbar sectioning and other wiring.
Typical scenarios:
Urban distribution networks, industrial parks, commercial complexes, data centers
35kV collection and boosting stations for wind farms / photovoltaic power stations
Temporary construction sites, mines, oil fields, power supply in remote areas
Renovation of old residential areas, emergency power supply, rapid capacity expansion
Rated Voltage: 35kV (40.5kV)
Rated Frequency: 50Hz
Main Transformer Capacity: 1600kVA to 5000kVA (Oil-immersed / Dry-type)
Rated Current on High-Voltage Side: 630A / 1250A
Rated Short-Circuit Breaking / Thermal Stability: 20kA / 25kA (2s / 4s)
Power Frequency Withstand Voltage (1min): 95kV (to ground / between phases)
Lightning Impulse Withstand Voltage: 185kV
Protection Grade: Box IP54, Internal Equipment IP4X
Operating Temperature: -40℃ to +45℃ (Wide Temperature Range)
Altitude: ≤ 4000m (Customized for High Altitude)
III. Structural Composition (Three Major Function Rooms + Intelligent Cabin)
1. High Voltage Room (35kV Power Distribution)
Configuration: 35kV vacuum circuit breaker cabinet / Ring main unit, disconnectors, grounding switches, CT/PT, lightning arresters, live display, five-prevention interlock.
Scheme: Incoming line, outgoing line, PT, metering, busbar connection, etc. An SF₆ gas-filled cabinet can be equipped to reduce the volume.
2. Transformer Room (Core Voltage Reduction Unit)
Main Transformer: Oil-immersed self-cooling (S13/S15 low-loss) or dry-type transformer, with options for no-excitation / on-load voltage regulation.
Cooling: Natural air cooling / strong wind cooling, equipped with temperature control, fire protection, oil level / pressure protection.
3. Low Voltage Room (10kV/0.4kV Power Distribution)
Configuration: Low-voltage switch cabinet, frame circuit breaker, feeder circuits, reactive power compensation, metering, UPS, surge protection.
Output: Multiple 10kV outgoing lines or 0.4kV power / lighting distribution.
4. Secondary / Intelligent Cabin (Optional)
Integration: Integrated protection device, measurement and control, communication (IEC 61850), remote control, online monitoring (partial discharge / temperature), intelligent temperature control to prevent condensation.
IV. Core Performance and Advantages
1. Highly integrated, small footprint, integrated design, the floor area is reduced by 40% to 60% compared to traditional stations, no need for complex civil construction and machine rooms.
2. Factory prefabrication, rapid commissioning - assembly, wiring, and debugging completed in the factory; only foundation installation and cable connection are required on-site, with a cycle of ≤ 15 days.
3. Outdoor full protection, highly reliable double-layer insulation, anti-corrosion, rust-proof, IP54 protection; intelligent temperature and humidity control, anti-condensation, fire prevention, anti-theft, earthquake resistance (8 degrees).
4. Flexible expansion, convenient operation and maintenance, modular "building block" combination, supports capacity / circuit expansion; handcart / plug-in design, safe and efficient maintenance.
5. Intelligent and green support remote monitoring, fault diagnosis, energy efficiency management; low-loss transformers, annual energy savings of 8% to 12%.
1. High Voltage Room (35kV Power Distribution)
Configuration: 35kV vacuum circuit breaker cabinet / Ring main unit, disconnectors, grounding switches, CT/PT, lightning arresters, live display, five-prevention interlock.
Scheme: Incoming line, outgoing line, PT, metering, busbar connection, etc. An SF₆ gas-filled cabinet can be equipped to reduce the volume.
2. Transformer Room (Core Voltage Reduction Unit)
Main Transformer: Oil-immersed self-cooling (S13/S15 low-loss) or dry-type transformer, with options for no-excitation / on-load voltage regulation.
Cooling: Natural air cooling / strong wind cooling, equipped with temperature control, fire protection, oil level / pressure protection.
3. Low Voltage Room (10kV/0.4kV Power Distribution)
Configuration: Low-voltage switch cabinet, frame circuit breaker, feeder circuits, reactive power compensation, metering, UPS, surge protection.
Output: Multiple 10kV outgoing lines or 0.4kV power / lighting distribution.
4. Secondary / Intelligent Cabin (Optional)
Integration: Integrated protection device, measurement and control, communication (IEC 61850), remote control, online monitoring (partial discharge / temperature), intelligent temperature control to prevent condensation.
IV. Core Performance and Advantages
1. Highly integrated, small footprint, integrated design, the floor area is reduced by 40% to 60% compared to traditional stations, no need for complex civil construction and machine rooms.
2. Factory prefabrication, rapid commissioning - assembly, wiring, and debugging completed in the factory; only foundation installation and cable connection are required on-site, with a cycle of ≤ 15 days.
3. Outdoor full protection, highly reliable double-layer insulation, anti-corrosion, rust-proof, IP54 protection; intelligent temperature and humidity control, anti-condensation, fire prevention, anti-theft, earthquake resistance (8 degrees).
4. Flexible expansion, convenient operation and maintenance, modular "building block" combination, supports capacity / circuit expansion; handcart / plug-in design, safe and efficient maintenance.
5. Intelligent and green support remote monitoring, fault diagnosis, energy efficiency management; low-loss transformers, annual energy savings of 8% to 12%.