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Three-Phase Oil Immersed Transformer (with OLTC), SZ11 Series

Product features

1. The SZ11(12,13) Series 10kV, 20kV, 35kV three-phase oil-immersed transformer with OLTC is widely used in industry and agriculture power grids for urban and rural applications.
2. It also has great energy saving and environmental protection features.
3. The lamination pattern of this product changed traditional lamination craft, improving magnetic circuit distribution in the iron core. Due to this, the no-load loss, on-load current and noise are decreased by 20% and load loss decrease 10%.
4. All index complied with GB1094-1996<>, GB/T6454-2008 technical data and requirements for three-phase oil-immersed power transformers.

Advantage

1. On-load regulating transformer is equipped with an on-load tap-changer.
2. It features high efficiency and low loss. This greatly reduces operating costs.
3. High reliability and advanced performance.
4. Stage three level joint for the iron core, painting curing varnish to reduce load loss and noise.
5. New winding structure, reasonable oil passage design. The new insulation structure improves strength and short circuit resistance ability.
Technical Parameters

Technical Data

10kV on-load regulating transformer technical data for your reference

Rated Capacity Vector Group Voltage Combination (kV) No-load current No-load loss Load loss Short circuit impedance
(kVA) High Voltage Low Voltage
(H.V.) (L.V.) % W (75 ℃)W %
200 Yyno Dyn11 6 ±4 ×2.5 6.3 ±4 ×2.5 10 ±4 ×2.5 10.5 ±4 ×2.5 11 ±4 ×2.5 0.4 1.80 330 2890 4.0
250 1.70 400 3400 4.0
315 1.60 475 4080 4.0
400 1.50 570 4930 4.0
500 1.40 680 5870 4.0
630 1.30 870 7230 4.5
800 1.20 1060 8840 4.5
1000 1.10 1240 10370 4.5
1250 1.00 1460 12300 4.5
1600 0.90 1865 14710 4.5
2000 0.80 2200 17310 4.5
2500 0.70 2610 21430 4.5
35kV On-load regulating transformer technical data for your reference
Rated Capacity Vector Group Voltage Combination(kV) No-load current No-load loss Load loss Short circuit impedance
(kVA) High Voltage Low Voltage
(H.V.) (L.V.) % W (75 ℃) W %
2000 Yd11 35 ±3 ×2.5 38.5 ±3 ×2.5 6.3 10 10.5 1.0 2160 19125 6.5
2500 Yd11 1.0 2550 20530 6.5
3150 Yd11 0.9 3030 24570 7.0
4000 Yd11 0.9 3630 28990 7.0
5000 Yd11 0.85 4350 34000 7.0
6300 Yd11 0.85 5280 36550 7.5
8000 YNd11 0.75 7380 40375 7.5
10000 YNd11 0.75 8700 47770 7.5
12500 YNd11 0.7 10260 56525 8.0
16000 YNd11 0.7 11400 69890 8.0
20000 YNd11 0.65 13500 80275 8.0

Note: Data included in the table are for reference only. For more information please contact us.

Accessories of oil-immersed type distribution transformers
Pressure relief valve
Contact thermometer
Integrated safety detector
Oil level indicator
Vibration dampers
Alternative terminations – plug-in connectors (outer cone and inner cone), busbar bushings, bushing flags, cable boxes

Applications
Product process
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