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Compact Transformer Substation

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15kV 1250kVA Compact Transformer Substation for China Grid

TAILI Compact Prefabricated Substation（European Substation) is an integrated electrical solution that combines high-voltage (HV) switchgear, distribution transformer, and low-voltage (LV) distribution equipment into one prefabricated enclosure. It typically includes HV switchgear such as RMU, circuit breaker, or load break switch; oil-immersed or dry-type transformer; LV distribution panel with circuit breakers and metering; and an enclosure.

The compact substation is designed for efficient power distribution in space-limited applications such as residential complexes, industrial parks, commercial buildings, renewable energy projects (solar and wind farms), and temporary construction sites.

The product complies with IEC 62271, IEC 60076, IEC 61439, as well as ANSI, IEEE, SABS, and SASO standards.

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Basic Info.

Primary Voltage	35, 34.5, 24, 20, 15, 13.8, 13.2, 11, 10.5, 10, 6.3, 6 kV or others
Secondary Voltage	600 V, 480 V, 415 V, 400 V, 380 V or others
Vector Group	Dyn11, Dyn5, Yyn0 or others
Impedance	4%, 6%
Capacity (Power Rating)	1000kVA, 1500 kVA, 2000 kVA, 2500kVA, 3000kVA
H.V. Tap Range	±2 × 2.5% or others
BIL (Basic Insulation Level)	30–150 kV
Standards	IEC, IEEE, ANSI, DOE
Certificates	CE, SGS, CNAS

Main Features of Prefabricated Substation

1. Fully enclosed and insulated structure
The compact Substation is very safe and reliable, simple operation and handling, maintenance-free, and very economical.

2. Many enclosure materials for option
The material of enclosure: steel plate, composite panel, stainless steel, cement board, etc.
Protection level up to IP67.

3. Each function unit is quite clear

The compartments of the substation is separating for HV room, transformer room, and LV room

HV compartment equipped with XGN15, HXGN17 or equivalent SF₆ switchgears

LV side adopts panel-mounted or cubicle-type structure, suitable for power distribution, lighting, reactive power compensation, and energy metering

Main LV switch is usually an air circuit breaker; intelligent circuit breakers are optional

Transformer: oil-immersed transformers or dry-type transformers

4. Busbar system

Three-phase four-wire or three-phase five-wire system

High-quality tinned copper busbars, with high mechanical strength and good heat dissipation

01 Workshop of compact substation

15kV 1250kVA Compact Transformer Substation for China Grid

02 Compartments of substation

15kV 1250kVA Compact Transformer Substation for China Grid

03 Customer projects of Prefabricated Substation

15kV 1250kVA Compact Transformer Substation for China Grid

Package and Shipping

15kV 1250kVA Compact Transformer Substation for China Grid

Service System

Pre-sales support

- Provide customized power distribution scheme design to optimize cabinet size, equipment layout and product configuration;

- For special needs (such as non-standard voltage, explosion-proof certification), provide detailed technical solutions within 12 hours.

After-sales guarantee

- Quick response: reply to fault report within 24 hours, remote debugging or on-site service within 48 hours (domestic);

- Regular return visits: inspect the operation status of the equipment free of charge every year and provide maintenance suggestions;

- Transparent service: the cause of the failure is explained in writing, the maintenance cost is priced according to the market standard, and the cost is refunded on the spot for valid complaints;

- Warranty policy: 2-3 years warranty for the whole machine (according to the model), lifetime costprice spare parts supply.

Routine Tests:

Measurement of winding resistance

Measurement of voltage ratio

Check of vector group

Mesurement of impendance voltage and load loss

Measurement of no load oss and current

Separate-source voltage withstand test

Induced overvoltage withstand test

Dimension checking

Type Tests

Lighting impulse test