High-Performance Aluminum-Wound Industrial Transformer

Model Number:S20-4000-Nx2
Rated Volume Quantity:4000KVA
High Voltage:35KV
Low Voltage:3.15KV/6.3KV/10.5KV
No-Load Loss:2280W
Load Loss:21840W
No-load electricity:0.45%
Short circuit resistance:7%

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Product Introduction

Products Description

Special Design for Underground Substations

Height ≤ 2.1 m (suitable for underground switchgear rooms with a 3 m floor-to-ceiling height).
Horizontal heat dissipation ducts allow for zero side clearance installation; minimum passage width: 0.8 m.
Certified by CQC for urban underground substations up to 110 kV.

Enhanced Resistance to Voltage Sags

Maintains continuous power supply for 1 second during a 30% instantaneous voltage drop (IEC 61000-4-11 Class 3).
Equipped with flux compensation winding (voltage recovery time < 20 ms).
Supports seamless switching between dual power supplies (switching delay ≤ 5 ms, compliant with GB 50171 standard).

Biodiversity-Friendly Design

Avoids bird-sensitive frequency bands in the noise spectrum (sound pressure level ≤ 45 dB at 1–4 kHz).
Anti-bird-dropping corrosion-resistant coating (ΔE < 1.5 after 2000 h salt spray test, ASTM D714).
Insect-proof ventilation filter on cabinet surface (aperture ≤ 0.5 mm, ISO 14644 cleanliness standard).

Carbon Credit Traceability System

Each product is assigned a unique blockchain carbon code (0.18 kgCO₂e emission reduction per kVA).
Equipped with a carbon credit trading interface (compatible with VERRA and CCER protocols).
Certified for carbon neutrality by TÜV Rheinland under PAS 2060.

Products Parameters

Model number	S20-4000-N×2
Rated volume quantity(KVA)	4000
High voltage(KV)	35/38.5
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)	2280
Load loss(W)	21840
No-load electricity(%)	0.45
Short circuit resistance(%)	7

Products Description

Our factory & quipment

Our transformer production combines automated equipment with the exquisite craftsmanship of experienced technicians. From winding and assembly to insulation treatment, each process is strictly supervised by a skilled technical team.
The workshop maintains constant temperature and humidity levels, in accordance with ISO 9001 international quality management standards, to ensure stable, safe, and durable product performance.
Production processes are transparent and visualized. We are committed to using technology to improve efficiency and deliver zero-defect industrial power solutions to our customers.