Oil-Immersed Transformer

S11-M oil-immersed power-transformer

S13-M Oil-Immersed Power Transformer


S13-M series sealed oil-immersed transformers are high-efficiency, energy-saving power distribution equipment with fully sealed structure, low loss, low noise, and maintenance-free design. They are widely used in urban and rural power grids, industrial and mining enterprises, commercial buildings, and various power distribution systems.
Adopting high-quality silicon steel sheets and advanced technique, the no-load loss is greatly reduced. The fully sealed structure isolates the transformer oil from air, preventing moisture and oxidation, effectively extending service life and ensuring stable and safe operation for a long time.
This series complies with GB/T 6451, GB/T 1094, IEC 60076 and other international and domestic standards, with strong short-circuit resistance, low temperature rise, and reliable performance.
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Model: S13-M-□/□
SymbolMeaning
SThree-phase
13Performance design serial number
MFully sealed structure
First □Rated capacity (kVA)
Second □Voltage class (kV)

Product Features


1. High Efficiency & Low Loss
Optimized core and coil design, lower no-load loss and load loss, obvious energy-saving effect.
2. Fully Sealed & Maintenance-Free
Corrugated tank or sealed structure, no oil replacement, no maintenance required during service life.
3. Strong Short-Circuit Withstand Ability
Reinforced winding structure, excellent mechanical strength, can withstand short-circuit impact.
4. Low Noise & Stable Operation
Low noise design, reliable insulation, long service life, suitable for outdoor long-term operation.
5. Wide Application Range
Suitable for 10kV, 35kV power distribution systems, urban grid, industrial and mining, infrastructure and other fields.

Operating Condition

Item Specification
Altitude ≤ 1000m
Ambient temperature -25℃ ~ +40℃
Installation Outdoor / indoor
Frequency 50Hz / 60Hz

Technical Parameters

S13-M 10kV Series Oil-Immersed Transformer Full Technical Parameters
ModelHigh Voltage(kV)Tap RangeLow Voltage(kV)Vector GroupNo-load Loss(W)Load Loss(W)No-load Current(%)Impedance(%)L(mm)B(mm)H(mm)Base Gauge(mm)Weight(kg)
S13-M-3010±5%0.4Dyn11806301.54.0695490860400×400260
S13-M-5010±5%0.4Dyn111009101.34.0725520955400×450365
S13-M-8010±5%0.4Dyn1113013101.24.0770565985400×450465
S13-M-10010±5%0.4Dyn1115015801.24.08005951000550×550545
S13-M-12510±5%0.4Dyn1117018901.14.08156701010550×550585
S13-M-16010±5%0.4Dyn1120023101.14.010156451055550×550695
S13-M-20010±5%0.4Dyn1124027301.04.010206501115550×550810
S13-M-25010±5%0.4Dyn1129032001.04.011407301120550×550930
S13-M-31510±5%0.4Dyn1134038300.94.011957851175660×6601075
S13-M-40010±5%0.4Dyn1141045200.94.012658551195660×6601255
S13-M-50010±5%0.4Dyn1148054100.84.513259151240660×6601435
S13-M-63010±5%0.4Dyn1157062000.84.514659601295660×6601880
S13-M-80010±5%0.4Dyn1170075000.64.515159951340660×6602145
S13-M-100010±5%0.4Dyn11830103000.64.5160510951460820×8202455
S13-M-125010±5%0.4Dyn11970120000.54.5168511451485820×8202840
S13-M-160010±5%0.4Dyn111170145000.54.5177512251580820×8203310
S13-M-200010±5%0.4Dyn111550183000.45.0185512651600820×8203960
S13-M-250010±5%0.4Dyn111830212000.45.0188513051780820×8204980
Note: All dimensions and weights are for reference only; technical parameters comply with GB/T 6451 & IEC 60076 standards.

Outline dimension & Install Dimension

S13-M oil-immersed power transformer appearance and installation dimensions

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