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SZ Series On Load Tap Changer Power Transformer

Summary 

The performance of our SZ-M series , SZ series 10kV and 35kV load-ratio voltage transformer conform to the standard of GB 1094 “Power Transformer “ and GB/T6451-2008 “Technical Parameter and requirements of Three-phase Oil-immersed Power Transformer”. The iron core is made of quality cold –rolled silicon steel sheet ,? and in full-miter non- puncture structure. The coil is made of quality oxygen-free copper, featuring good outlook and safe running . The products are widely used in power transmission and distribution of industrial and agricultural power networks.

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SZ Series On Load tap changer power Transformer

Summary

The performance of our SZ-M series , SZ series 10kV and 35kV load-ratio voltage transformer conform to the standard of GB 1094 “Power Transformer “ and GB/T6451-2008 “Technical Parameter and requirements of Three-phase Oil-immersed Power Transformer”. The iron core is made of quality cold –rolled silicon steel sheet ,? and in full-miter non- puncture structure. The coil is made of quality oxygen-free copper, featuring good outlook and safe running . The products are widely used in power transmission and distribution of industrial and agricultural power networks.

Reliable Structure

Load-ratio voltage regulation , high reliability, advanced level of performance, reasonable economical indicators.The core joints are of stepped shape with 3 steps , and the surface of this core is coated with cured paint to lower losses and noise.
?The winding has novel structure and its oil passage is reasonable designed . Its newly designed insulation structure helps enhance its mechanical strength and the short circuit withstanding ability.?The oil tank is in two types –fully enclosed type and the type fitted with an oil conservator.

Excellent Materials

Oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.
High-quality wooden laminating insulation pieces, which won’t split or move even under the influence of short circuit.Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.High-quality rubber sealing material, which can prevent the transformers form aging or leakage.


Rated
power
(kva)
High
Voltage
H.V Tap

range

(kv)

Low Voltage(kv) Connection
Symbol
Short-
Circuit
Impedance
(%)
No-load Loss(w) On-Load Loss(w) No-load

Current

(%)

9Type 10Type 11Type 9Type 10Type 11Type
800 35 38.5 ±3×2.5%

6.3 6.6 10

 10.5 11

Yd11 YNd11 12~14 1320 1190 1060 10500 9980 9980 1.05
1000 1570 1410 1260 12800 12160 12160 1
1250 1860 1670 1490 15400 14630 14630 0.9
1600 2250 2030 1800 18500 17580 17580 0.85
2000 2880 2590 2300 20250 19240 19240 0.8
2500 3400 3060 2720 21730 20640 20640 0.8
3150 7 4040 3640 3230 26010 24710 24710 0.72
4000 4840 4360 3870 30690 29160 29160 0.72
5000 5800 5220 4640 36000 34200 34200 0.68
6300 7.5 7040 6340 5630 38700 36770 36770 0.68
8000 9840 8860 7870 42750 40610 40610 0.6
10000 11600 10440 9280 50580 48050 48050 0.6
12500 8 13680 12310 10940 59850 56860 56860 0.56
16000 16460 14810 13170 74020 70320 70320 0.54
20000 19460 17510 15570 87140 82780 82780 0.54
25000 23700 21330 18960 107000 101650 101650 0.5
31500 27500 24750 22000 126000 119700 119700 0.45


Rated power Weight Overall dimension(mm) Gauge
(kg) (mm)
(kVA) Oil total L W H
800 1650 4790 2870 1810 2570 820×820
1000 1760 5210 3150 1890 2650 820×820
1250 2010 6080 3510 2040 2690 1070×1070
1600 1920 6610 3560 2070 2740 1070×1070
2000 2160 7440 3680 2050 2850 1070×1070
2500 2580 8240 3780 2220 2890 1070×1070
3150 2680 8540 3850 2310 2950 1070×1070
4000 2960 11180 4120 2380 3150 1070×1070
5000 3050 12480 4210 2510 3220 1070×1070
6300 4050 15900 4320 3000 3290 1475×1475
8000 4200 17130 4500 3100 3680 1475×1475
10000 7480 25230 4560 3500 3750 1475×1475
12500 8010 27000 4590 3580 3830 1475×1475
16000 8560 32500 4650 3700 4000 1475×1475
20000 10030 37770 5200 4200 4280 1475×1475
25000 12300 42600 5320 4350 4340 1475×1475
31500 13500 51100 5450 4420 4450 1475×1475

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