YB Series Prefabricated Substation

Separate MV switchgear, transformer and LV distribution compartments are factory-assembled in one weatherproof enclosure.

MV Voltage	up to 12 kV
LV Voltage	0.4 kV
Transformer	S11 / S13 / dry-type
Capacity	up to 2500 kVA
Protection	Integrated, weatherproof
Standards	GB/T 17467 / IEC 62271-202

✓ Backed by a 18-month warranty from the contract signing date.

Key Features

MV switchgear, transformer and LV distribution in one enclosure.
Factory-assembled for efficient on-site installation.
For urban grids, residential and industrial parks.
Monitoring and protection options available.

Configure Your Substation

The YB Series is a made-to-order compact substation with separate MV, transformer and LV compartments in one weatherproof enclosure. Each section is configured to the approved project requirements, including enclosure material and environmental rating.

Compartment 1

MV Switchgear

Ring-main unit / load-break switch & fuse, 12 kV incoming.

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Compartment 2

Transformer

Oil-immersed or cast-resin dry-type, 30–2500 kVA.

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Compartment 3

LV Distribution

Main breaker, feeders and reactive-power compensation.

Enclosure & Shell

Choose

Colour-coated steelStainless steelAluminium alloyCold-rolled steelNon-metallic SMC composite

Honeycomb double-layer composite panel — heat-insulating, ventilated, high ingress protection.

Architectural Style

Choose

General typeVilla (brick-finish)Compact type

Transformer

Choose

Oil-immersed sealed (S11 / S13)Cast-resin dry-typeNOMEX dry-type

30–2500 kVA. Bottom roller trolley for easy withdrawal.

MV Protection

Choose

Load-break switch + fuseVacuum circuit breaker (≥800 kVA)

Switching medium: air-puffer, vacuum or SF₆. Motor operating mechanism optional.

LV Distribution

Choose

Intelligent main breakerUp to 30 MCCB feedersAuto-tracking PFC (≤300 kvar)

Automation & Climate

Option

FTU-ready “four-remote”Standard climateHigh-altitude (>1000 m)Tropical / coastal

Standard configuration is highlighted in amber. Any combination is available on request — send us your single-line diagram (SLD) or load schedule and our engineers will confirm the build and price. Start a configuration →