Letters/Numbers

English meaning.

S

Three-phase oil-immersed power transformer

Z

On-load tap changer

□

Design serial number

□

Rated capacity range(3150-31500kVA)

35

Rated high voitage(kV)

Advantage dimension

detailed description

High voltage on load precise voltage regulation

Voltage regulation range ±4×2.5%,real-time voltage  stabilization w ith load,voltage accuracy ±0.5%,suitable for 35KV power grid fluctuation conditions

Dual winding high efficiency and low consumption

The no-load loss is reduced by 20%compared to the national standard,and the load loss is reduced by 15%.The annual pow er saving exceeds 3000KWh/unit,achieving first-class energy

Strong resistance to short circuits and high reliability

The impedance voltage is 7%-10%

Fuly sealed long-Iife design

The corrugated fuel tank has a fuly sealed structure to prevent leakage and 30% reduction in insulation aging rate

Strong adaptability towide range protection

Protection level IP67,suitable for-40℃~+50 ℃,atitudes 1000m supports outdoor/indoor distribution room deployment

parameter name

Standard coniguration

Rated capacity

3150KVA~31500KVA

Rated voltage

High voltage side 35KV;low voltage side 10KV/6.3KV/0.4KV(optional)

Phase numbe/frequency

Three phase/50Hz

pressure regulation
method

On load voltage regulation,voltage regulation range±4×2.5%

winding connection
group

Dyn11(standard)/Yyn0(optional customization)

cooling method

ONAN(oil immersedself cooling)/ONAF (forced air cooling,optional)

impedance voltage

6%(3150-5000kVA)/7.5%(6300- 10000kVA)/8%(12500-20000)/10%(25000-31500)

no-load loss

Reduced by 20%compared to GB/T 6451-2023 standard

load loss

Reduced by 15% compared to GB/T 6451-2023 standard

insulaton class

Grade A(temperature rise limit of 65K)

Protection level

IP67(fuel tank body)

noise level

≤60dB(measured at a distance of 1m)

service life

≥25years

execution standard

GB/T6451-2023、IEC60076-8