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Prefabricated substation · Chinese-type

YBH Chinese-Type Prefabricated Substation

YBH series

Step-up substation for photovoltaic and wind generation, sized for the higher ratings of new-energy grids.

Rated capacity
200–15000kVA
Voltage
7.2–72.5kV
HV breaking
31.5kA
Ratings and dimensions
YBH Chinese-type prefabricated substation, photograph

Overview

YBH series prefabricated substations for photovoltaic and wind power generation are suitable for 7.2–72.5 kV with a maximum capacity of 15000 kVA. At 72.5 kV the high-voltage side uses a tank-type C-GIS solution. Designed for the instability of new-energy grids and the higher ratings of step-up substations, they use vacuum load switches or vacuum circuit breakers with a high-voltage breaking current of up to 31.5 kA.

Used as transmission and distribution equipment for new-energy PV and wind systems, including capacity expansion or replacement of American-type transformers. Complies with GB/T 17467.

Ratings

YBH Chinese-type substation parameters

ItemUnitParameter
Rated voltagekVLow voltage 0.315–1.14; high voltage 7.2–40.5
Rated frequencyHz50
Rated capacitykVA200–12500
Rated short-time withstand voltagekV/1 minLow voltage 5; high voltage 85
Protection grade—IP33, IP43, IP54, IP65
Energy-efficiency level—Grade 1–3
Transformer type—Dry-type or oil-immersed transformer
High-voltage switchgear—Air-insulated cabinet or gas-insulated switchgear (C-GIS), handcart or fixed type; load switch, fuse or circuit breaker; incoming, outgoing, voltage protection, contact lifting and metering cabinets
Low-voltage switchgear—Fixed or drawer type; incoming, outgoing, capacitor compensation and metering cabinets
Breaking current—Low voltage: 50–100 kA; high voltage: 20–40 kA

YBH input / output

ItemUnitInputOutput
Rated voltagekV0.54 / 0.69 / 0.8 / 0.95 / 1.1412 / 40.5
Rated frequencyHz5050
Rated capacitykVA500, 800, 1000, 1250, 1600, 2000, 2500, 3150, 3300, 3500, 4000, 5000, 5500, 6300, 7100, 8000, 10000, 12500
Rated short-time withstand voltagekV/1 min585
Neutral point—Earthed / unearthedEarthed / unearthed

The table reflects the 40.5 kV rating range. Designs up to 72.5 kV and 15,000 kVA are available to project specification.

Design and performance

Functional features

Large capacity
Large capacity, small footprint, safe, reliable and pollution-free.
Harsh environments
Full heat insulation, natural ventilation, convenient and safe operation.
Clean oil
No oil change or refilling; HV load switch separated from the oil tank so the oil stays clean.
Serviceable
Load-switch brand selectable, easy fuse replacement.
Configurable
HV and LV accessories freely combined, with protection and metering components.

More prefabricated substations

All prefabricated substations
ZGS seriesZGS Combined Transformer (American-Type)200–4000 kVAYB-12 (40.5) seriesYB Prefabricated Substation (European-Type)200–8000 kVAIntegrated step-up machinePV Inverter / Converter Energy-Storage Integrated Machine2000–15000 kVA

Need a rating that is not listed?

Send the capacity, voltage ratio, vector group, impedance and site conditions. Engineering confirms the design against the approved project specification.

Certificates and reports