Three-Phase Distribution Transformer with Copper Windings

Model Number:S13-2500-Nx3
Rated Volume Quantity:2500KVA
High Voltage:35KV
Low Voltage:3.15KV/6.3KV/10.5KV
No-Load Loss:1790W
Load Loss:19600W
No-load electricity:0.45%
Short circuit resistance:6.5%

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Product Introduction

Products Description

Low No-Load Loss

No-load loss ≤ 4.5 kW (compliant with national first-class energy efficiency standards). With stepped stacking of silicon steel sheets and oxygen-free copper windings, light-load energy efficiency is increased by 18%, making it suitable for low-load scenarios such as rural power grids and distributed photovoltaics.

Fully Sealed, Moisture-Proof Design

The corrugated oil tank is integrally formed, and the sealing rubber ring is resistant to aging. It has passed the -40℃ freeze-thaw cycle test and meets IP54 protection grade requirements, making it suitable for areas with high humidity and large temperature differences.

Anti-Harmonic Interference Structure

Equipped with transposed winding wires and a magnetic shielding layer, it can operate at full capacity with THDi 8% without derating. Fully compatible with grid-connected new energy inverter systems.

Compact and Lightweight Design

Total weight ≤ 6.8 tons (industry average: 7.5 tons), with a footprint of only 3.1 × 1.8 m. Ideal for small substation upgrades and containerized power distribution solutions.

High Cycle Life

Fully enclosed with no exposed conductive parts. Only oil chromatography testing is required every five years during regular use. The design life is ≥ 30 years, reducing overall operation and maintenance costs by 35%.

Products Parameters

Model number	S13-2500-N×3
Rated volume quantity(KVA)	2500
High voltage(KV)	35
High voltage tap range(KV)	±5% or ±2×2.5%
Low voltage(KV)	3.15/6.3/10.5
Connection group label	yd11
No-load loss(W)	1790
Load loss(W)	19600
No-load electricity(%)	0.45
Short circuit resistance(%)	6.5