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SL11 Series Oil-Immersed Transformers

162 Models available

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SL11 Oil-Immersed Transformers

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SL11 Series - Oil-Immersed Transformers with Aluminum Winding (Level 11 Efficiency)

The SL11 series features aluminum winding construction with Level 11 energy efficiency, offering cost-effective solutions for power distribution. Rated 10–5000 kVA, 0.48–35 kV primary and 0.208–0.48 kV secondary, mineral-oil insulation with 65 K temperature rise. Suitable for utility distribution networks, substations, solar farms, and industrial power systems.

Model Number Breakdown

11Performance level designation, corresponds to Level 11 energy efficiency standard
SThree-phase power transformer
LAluminum winding structure
162+
Available Models
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Key Features

  • Level 11 energy efficiency rating
  • Cost-effective aluminum winding
  • Lightweight design
  • Reliable performance

Applications

  • Budget-conscious projects
  • General power distribution
  • Rural electrification
  • Light industrial applications

TECHNICAL DRAWING

Model: SL11-M-250/10/0.48 | Type: Oil-immersed transformer | Capacity: 250 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.180mm240mm

ELECTRICAL SCHEMATIC

HV WINDING (Delta)1U1V1WLV WINDING (Star)2U2V2W2NDelta-Wye (IEEE Std)

EFFICIENCY vs LOAD

90%95%98%99%0%25%50%75%100%≈99%load %efficiency %

SIDE VIEW

Oil level135mm

TOP VIEW

1U1V1W2U2V2W2N135mm

TERMINAL BLOCK

HV TERMINAL BLOCK1U1V1W1N1PELV TERMINAL BLOCK2U2V2W2N2PE2122Terminal block configurationTin-plated copper busbar

CORE & WINDING

OIL / TANKHV winding/bushingINSULATIONLV winding/bushingIron coreconcentric cross-section
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Specifications Range

All specifications and dimensions can be customized upon request

Model Selector

Key parametersModel Range
Capacity10–5000 kVA
HV Voltage (kV)10, 6, 35, 0.48
LV Voltage (kV)0.4, 0.48, 0.22, 0.208
Frequency (Hz)50, 60
Impedance (%)4, 4.5, 6, 7
CoolingONAN
EfficiencyClass 1
StandardIEC 60076, IEEE C57 / ANSI C84.1
ConnectionDyn11 (IEC), Delta-Wye (IEEE Std)
Insulation classA (105°C)
Allowed temperature rise65
Noise level≤33 dB(A), ≤34 dB(A), ≤35 dB(A), ≤36 dB(A), ≤37 dB(A), ≤38 dB(A)…
Tap Changer±2×2.5% Multi-tap, ±5% Single-tap, ±5×2.5% Multi-tap
No-load loss57–3892 W
Load loss330–38786 W
Select 2-3 models to compare
CompareModelCapacity (kVA)HV Voltage (kV)LV Voltage (kV)WeightDimensions
SL11-M-10/10/0.410kVA100.4221 kg496×340×686 mm
SL11-M-10/6/0.410kVA60.4221 kg496×340×686 mm
SL11-M-10/35/0.410kVA350.4221 kg496×340×686 mm
SL11-M-10/10/0.4810kVA100.48221 kg496×340×686 mm
SL11-M-10/10/0.2210kVA100.22221 kg496×340×686 mm
SL11-M-10/0.48/0.20810kVA0.480.208221 kg496×340×686 mm
SL11-M-15/10/0.415kVA100.4238.6 kg516×359×708 mm
SL11-M-15/6/0.415kVA60.4238.6 kg516×359×708 mm
SL11-M-15/35/0.415kVA350.4238.6 kg516×359×708 mm
SL11-M-15/10/0.4815kVA100.48238.6 kg516×359×708 mm
SL11-M-15/10/0.2215kVA100.22238.6 kg516×359×708 mm
SL11-M-15/0.48/0.20815kVA0.480.208238.6 kg516×359×708 mm
SL11-M-20/10/0.420kVA100.4256 kg535×377×731 mm
SL11-M-20/6/0.420kVA60.4256 kg535×377×731 mm
SL11-M-20/35/0.420kVA350.4256 kg535×377×731 mm
SL11-M-20/10/0.4820kVA100.48256 kg535×377×731 mm
SL11-M-20/10/0.2220kVA100.22256 kg535×377×731 mm
SL11-M-20/0.48/0.20820kVA0.480.208256 kg535×377×731 mm
SL11-M-25/10/0.425kVA100.4278 kg600×415×754 mm
SL11-M-25/6/0.425kVA60.4278 kg600×415×754 mm
SL11-M-25/35/0.425kVA350.4278 kg600×415×754 mm
SL11-M-25/10/0.4825kVA100.48278 kg600×415×754 mm
SL11-M-25/10/0.2225kVA100.22278 kg600×415×754 mm
SL11-M-25/0.48/0.20825kVA0.480.208278 kg600×415×754 mm
SL11-M-30/10/0.430kVA100.4300 kg664×453×777 mm
SL11-M-30/6/0.430kVA60.4300 kg664×453×777 mm
SL11-M-30/35/0.430kVA350.4300 kg664×453×777 mm
SL11-M-30/10/0.4830kVA100.48300 kg664×453×777 mm
SL11-M-30/10/0.2230kVA100.22300 kg664×453×777 mm
SL11-M-30/0.48/0.20830kVA0.480.208300 kg664×453×777 mm
SL11-M-40/10/0.440kVA100.4358 kg676×460×800 mm
SL11-M-40/6/0.440kVA60.4358 kg676×460×800 mm
SL11-M-40/35/0.440kVA350.4358 kg676×460×800 mm
SL11-M-40/10/0.4840kVA100.48358 kg676×460×800 mm
SL11-M-40/10/0.2240kVA100.22358 kg676×460×800 mm
SL11-M-40/0.48/0.20840kVA0.480.208358 kg676×460×800 mm
SL11-M-50/10/0.450kVA100.4415 kg687×468×823 mm
SL11-M-50/6/0.450kVA60.4415 kg687×468×823 mm
SL11-M-50/35/0.450kVA350.4415 kg687×468×823 mm
SL11-M-50/10/0.4850kVA100.48415 kg687×468×823 mm
SL11-M-50/10/0.2250kVA100.22415 kg687×468×823 mm
SL11-M-50/0.48/0.20850kVA0.480.208415 kg687×468×823 mm
SL11-M-63/10/0.463kVA100.4464 kg722×487×864 mm
SL11-M-63/6/0.463kVA60.4464 kg722×487×864 mm
SL11-M-63/35/0.463kVA350.4464 kg722×487×864 mm
SL11-M-63/10/0.4863kVA100.48464 kg722×487×864 mm
SL11-M-63/10/0.2263kVA100.22464 kg722×487×864 mm
SL11-M-63/0.48/0.20863kVA0.480.208464 kg722×487×864 mm
SL11-M-80/10/0.480kVA100.4530 kg764×513×914 mm
SL11-M-80/6/0.480kVA60.4530 kg764×513×914 mm
SL11-M-80/35/0.480kVA350.4530 kg764×513×914 mm
SL11-M-80/10/0.4880kVA100.48530 kg764×513×914 mm
SL11-M-80/10/0.2280kVA100.22530 kg764×513×914 mm
SL11-M-80/0.48/0.20880kVA0.480.208530 kg764×513×914 mm
SL11-M-100/10/0.4100kVA100.4586 kg800×650×1090 mm
SL11-M-100/6/0.4100kVA60.4586 kg800×650×1090 mm
SL11-M-100/35/0.4100kVA350.4586 kg800×650×1090 mm
SL11-M-100/10/0.48100kVA100.48586 kg800×650×1090 mm
SL11-M-100/10/0.22100kVA100.22586 kg800×650×1090 mm
SL11-M-100/0.48/0.208100kVA0.480.208586 kg800×650×1090 mm
SL11-M-125/10/0.4125kVA100.4645 kg825×543×1006 mm
SL11-M-125/6/0.4125kVA60.4645 kg825×543×1006 mm
SL11-M-125/35/0.4125kVA350.4645 kg825×543×1006 mm
SL11-M-125/10/0.48125kVA100.48645 kg825×543×1006 mm
SL11-M-125/10/0.22125kVA100.22645 kg825×543×1006 mm
SL11-M-125/0.48/0.208125kVA0.480.208645 kg825×543×1006 mm
SL11-M-160/10/0.4160kVA100.4739 kg840×710×1160 mm
SL11-M-160/6/0.4160kVA60.4739 kg840×710×1160 mm
SL11-M-160/35/0.4160kVA350.4739 kg840×710×1160 mm
SL11-M-160/10/0.48160kVA100.48739 kg840×710×1160 mm
SL11-M-160/10/0.22160kVA100.22739 kg840×710×1160 mm
SL11-M-160/0.48/0.208160kVA0.480.208739 kg840×710×1160 mm
SL11-M-200/10/0.4200kVA100.4830 kg880×750×1140 mm
SL11-M-200/6/0.4200kVA60.4830 kg880×750×1140 mm
SL11-M-200/35/0.4200kVA350.4830 kg880×750×1140 mm
SL11-M-200/10/0.48200kVA100.48830 kg880×750×1140 mm
SL11-M-200/10/0.22200kVA100.22830 kg880×750×1140 mm
SL11-M-200/0.48/0.208200kVA0.480.208830 kg880×750×1140 mm
SL11-M-250/10/0.4250kVA100.4928 kg909×777×1188 mm
SL11-M-250/6/0.4250kVA60.4928 kg909×777×1188 mm
SL11-M-250/35/0.4250kVA350.4928 kg909×777×1188 mm
SL11-M-250/10/0.48250kVA100.48928 kg909×777×1188 mm
SL11-M-250/10/0.22250kVA100.22928 kg909×777×1188 mm
SL11-M-250/0.48/0.208250kVA0.480.208928 kg909×777×1188 mm
SL11-M-315/10/0.4315kVA100.41059 kg910×830×1270 mm
SL11-M-315/6/0.4315kVA60.41059 kg910×830×1270 mm
SL11-M-315/35/0.4315kVA350.41059 kg910×830×1270 mm
SL11-M-315/10/0.48315kVA100.481059 kg910×830×1270 mm
SL11-M-315/10/0.22315kVA100.221059 kg910×830×1270 mm
SL11-M-315/0.48/0.208315kVA0.480.2081059 kg910×830×1270 mm
SL11-M-400/10/0.4400kVA100.41278 kg980×920×1310 mm
SL11-M-400/6/0.4400kVA60.41278 kg980×920×1310 mm
SL11-M-400/35/0.4400kVA350.41278 kg980×920×1310 mm
SL11-M-400/10/0.48400kVA100.481278 kg980×920×1310 mm
SL11-M-400/10/0.22400kVA100.221278 kg980×920×1310 mm
SL11-M-400/0.48/0.208400kVA0.480.2081278 kg980×920×1310 mm
SL11-M-500/10/0.4500kVA100.41450 kg1030×930×1340 mm
SL11-M-500/6/0.4500kVA60.41450 kg1030×930×1340 mm
SL11-M-500/35/0.4500kVA350.41450 kg1030×930×1340 mm
SL11-M-500/10/0.48500kVA100.481450 kg1030×930×1340 mm
SL11-M-500/10/0.22500kVA100.221450 kg1030×930×1340 mm
SL11-M-500/0.48/0.208500kVA0.480.2081450 kg1030×930×1340 mm
SL11-M-630/10/0.4630kVA100.41706 kg1340×850×1410 mm
SL11-M-630/6/0.4630kVA60.41706 kg1340×850×1410 mm
SL11-M-630/35/0.4630kVA350.41706 kg1340×850×1410 mm
SL11-M-630/10/0.48630kVA100.481706 kg1340×850×1410 mm
SL11-M-630/10/0.22630kVA100.221706 kg1340×850×1410 mm
SL11-M-630/0.48/0.208630kVA0.480.2081706 kg1340×850×1410 mm
SL11-M-800/10/0.4800kVA100.42029 kg1500×1060×1340 mm
SL11-M-800/6/0.4800kVA60.42029 kg1500×1060×1340 mm
SL11-M-800/35/0.4800kVA350.42029 kg1500×1060×1340 mm
SL11-M-800/10/0.48800kVA100.482029 kg1500×1060×1340 mm
SL11-M-800/10/0.22800kVA100.222029 kg1500×1060×1340 mm
SL11-M-800/0.48/0.208800kVA0.480.2082029 kg1500×1060×1340 mm
SL11-M-1000/10/0.41000kVA100.42294 kg1650×1090×1380 mm
SL11-M-1000/6/0.41000kVA60.42294 kg1650×1090×1380 mm
SL11-M-1000/35/0.41000kVA350.42294 kg1650×1090×1380 mm
SL11-M-1000/10/0.481000kVA100.482294 kg1650×1090×1380 mm
SL11-M-1000/10/0.221000kVA100.222294 kg1650×1090×1380 mm
SL11-M-1000/0.48/0.2081000kVA0.480.2082294 kg1650×1090×1380 mm
SL11-M-1250/10/0.41250kVA100.42698 kg1640×1150×1490 mm
SL11-M-1250/6/0.41250kVA60.42698 kg1640×1150×1490 mm
SL11-M-1250/35/0.41250kVA350.42698 kg1640×1150×1490 mm
SL11-M-1250/10/0.481250kVA100.482698 kg1640×1150×1490 mm
SL11-M-1250/10/0.221250kVA100.222698 kg1640×1150×1490 mm
SL11-M-1250/0.48/0.2081250kVA0.480.2082698 kg1640×1150×1490 mm
SL11-M-1600/10/0.41600kVA100.43932 kg1436×1230×1773 mm
SL11-M-1600/6/0.41600kVA60.43932 kg1436×1230×1773 mm
SL11-M-1600/35/0.41600kVA350.43932 kg1436×1230×1773 mm
SL11-M-1600/10/0.481600kVA100.483932 kg1436×1230×1773 mm
SL11-M-1600/10/0.221600kVA100.223932 kg1436×1230×1773 mm
SL11-M-1600/0.48/0.2081600kVA0.480.2083932 kg1436×1230×1773 mm
SL11-M-2000/10/0.42000kVA100.44418 kg1528×1283×1828 mm
SL11-M-2000/6/0.42000kVA60.44418 kg1528×1283×1828 mm
SL11-M-2000/35/0.42000kVA350.44418 kg1528×1283×1828 mm
SL11-M-2000/10/0.482000kVA100.484418 kg1528×1283×1828 mm
SL11-M-2000/10/0.222000kVA100.224418 kg1528×1283×1828 mm
SL11-M-2000/0.48/0.2082000kVA0.480.2084418 kg1528×1283×1828 mm
SL11-M-2500/10/0.42500kVA100.45125 kg1665×996×1801 mm
SL11-M-2500/6/0.42500kVA60.45125 kg1665×996×1801 mm
SL11-M-2500/35/0.42500kVA350.45125 kg1665×996×1801 mm
SL11-M-2500/10/0.482500kVA100.485125 kg1665×996×1801 mm
SL11-M-2500/10/0.222500kVA100.225125 kg1665×996×1801 mm
SL11-M-2500/0.48/0.2082500kVA0.480.2085125 kg1665×996×1801 mm
SL11-M-3150/10/0.43150kVA100.46096.5 kg1757×1095×1920 mm
SL11-M-3150/6/0.43150kVA60.46096.5 kg1757×1095×1920 mm
SL11-M-3150/35/0.43150kVA350.46096.5 kg1757×1095×1920 mm
SL11-M-3150/10/0.483150kVA100.486096.5 kg1757×1095×1920 mm
SL11-M-3150/10/0.223150kVA100.226096.5 kg1757×1095×1920 mm
SL11-M-3150/0.48/0.2083150kVA0.480.2086096.5 kg1757×1095×1920 mm
SL11-M-4000/10/0.44000kVA100.47333.5 kg1909×1170×2057 mm
SL11-M-4000/6/0.44000kVA60.47333.5 kg1909×1170×2057 mm
SL11-M-4000/35/0.44000kVA350.47333.5 kg1909×1170×2057 mm
SL11-M-4000/10/0.484000kVA100.487333.5 kg1909×1170×2057 mm
SL11-M-4000/10/0.224000kVA100.227333.5 kg1909×1170×2057 mm
SL11-M-4000/0.48/0.2084000kVA0.480.2087333.5 kg1909×1170×2057 mm
SL11-M-5000/10/0.45000kVA100.48835.5 kg2062×1245×2194 mm
SL11-M-5000/6/0.45000kVA60.48835.5 kg2062×1245×2194 mm
SL11-M-5000/35/0.45000kVA350.48835.5 kg2062×1245×2194 mm
SL11-M-5000/10/0.485000kVA100.488835.5 kg2062×1245×2194 mm
SL11-M-5000/10/0.225000kVA100.228835.5 kg2062×1245×2194 mm
SL11-M-5000/0.48/0.2085000kVA0.480.2088835.5 kg2062×1245×2194 mm

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Derived Ratings (calculated from the configuration)

The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.

Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ

Inputs taken from the configuration
Capacity: — kVAfrom the configuration above
System voltage: not specified
Impedance voltage uₖ: not specified
Result
Rated current Iₙ—
Short-circuit current I_sc—
Short-circuit current I_sc—
Short-circuit power S_sc—
I_sc is calculated on the transformer impedance basis alone (system impedance neglected) — the same basis used in IEC 60076-5 short-circuit calculations.
System voltage → —

Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.

Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.

Derived losses (from the selected efficiency grade + capacity)
Class 3 (S13)
No-load loss P0 (kW)—
Load loss Pk (kW)—

Read-only: no price factor, not part of the sum — the loss-grade cost is already carried by the efficiency (subtype) base price, so charging here would double-bill. Values come from the product library type-test data, interpolated between published capacities; grades the library does not cover show an em dash, never zero.

S13 系列（产品库 S13-M / 卷铁芯 S13-M.RL，Class 3）

Reference prices are for estimation only and do not constitute a formal offer.

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