Three-phase oil immersed transformer
NINGBO TIANAN (GROUP) CO., LTD.
1. General
(1) Application:
>> 12, 24,36KV~220kv class transformers
are widely used in power transmission and distribution stations,
industry plants, Generation Setup Unit (GSU).
>> They have the characteristic of high efficiency, low loss and maintenance free.
(2) Type and Rating
**Capacity range :50-50000KVA.
**Secondary voltage: 415V ,400V etc.
**Frequency :50Hz ,60Hz.
**Type: Single phase ,three phase.
**No-load tap changer and on-load tap changer.
**ONAN and ONAF.
**Set-up and set-down type.
(3) Standard: IEC60076-1, IEC60076-2, IEC60076-5, IEC60317, ANSI, IEEE, AS, etc.
2. Conditions of service
(1) Altitude: Up to 1,000m above sea level.
(2) Ambient temperature:
**Max: +40ºC.
**Average (daily, Max.): +30ºC.
**Average (yearly, Max.): +20ºC.
**Min: -45ºC.
(3) Environment: Outdoor.
(4) Special conditions:
It may be consulted between manufacturer and customer.
3. Structural Features
(1) Iron core
The iron core is made of cold rolled grain oriented silicon steel sheet. Laminations are cut to length
onGEORG cut to- length line with steplap cut and automatic stacking functions.
The multistep lamination structure can reduce the loss and noise .
The steel sheet in the core limbs and yokes are clamped together by glass-epoxy bonds.
(2) Winding
High quality enameled or paper covered copper is used as conductor, the winding was made as
drum type, spiral type, improved spiral type, continuous type and interleaved type to ensure the insulation strength. Standard tapings are ±2*2.5%of the HV winding.
(3) Tank
The tank, cover and the conservator are made by corrugated steel plate .For the small transformers,
we use a deep tank and a cover, but for larger transformers, we manufacture bell type .The corrugated construction are a effective way for oil cooling.
(4) Insulation oil
The tanks are filled with high quality grade mineral oil as per IEC296 and it is PCB and PCT free.
The oil is used to help cooling the transformer. It is also used provide part of the electrical insulation between internal live parts.
(5) Tap changer
Tap changers are used to regulate the output voltage of the transformers to required levels .We
achieve this by changing the ratios of the transformer on the system by altering the number of turns in the HV winding .Tap changers can be on load (OLTC) or off load(OCTC).
(6) Assembly
The core and the windings assembled together from the active part of the transformer. The active
body assembled with multi-windings and identical pressure dry method adopted, effectively improved
the electrical strength and the ability to short circuit withstanding.
4. Test equipment
Strict test should be done according to IEC standard, by high technical equipments to ensure the
quality and the reliable of every transformer.
5. Technical Data of Typical Products
>S9, S10 series 10KV three phase off -load tap changer distribution transformer
Type | Rating KVA | On-load loss (w) | Load loss (w) | I (%) | UK (%) | Dimension (mm) | Weight (kg) |
a | b | c |
S9-M-50/11 | 50 | 170 | 870 | 2.0 | 4.0 | 1215 | 660 | 1170 | 430 |
S9-M-250/11 | 250 | 560 | 3050 | 1.2 | 4.0 | 1190 | 815 | 1370 | 1115 |
S9-M-400/11 | 400 | 800 | 4300 | 1.0 | 4.0 | 1515 | 770 | 1580 | 1380 |
S9-M-500/11 | 500 | 960 | 5050 | 1.0 | 4.0 | 1635 | 840 | 1610 | 1600 |
S9-M-1000/11 | 1000 | 1700 | 10300 | 0.7 | 4.5 | 1960 | 1095 | 1960 | 2860 |
S9-M-2500/11 | 2500 | 3300 | 23000 | 0.55 | 5.5 | 2230 | 2305 | 2445 | 5660 |
S10-M-30/10 | 30 | 110 | 600 | 1.8 | 4.0 | 870 | 645 | 1025 | 310 |
S10-M-50/10 | 50 | 140 | 870 | 1.7 | 4.0 | 1090 | 650 | 1080 | 395 |
S10-M-80/10 | 80 | 200 | 1250 | 1.6 | 4.0 | 1140 | 675 | 1110 | 490 |
S10-M-100/10 | 100 | 240 | 1500 | 1.5 | 4.0 | 1185 | 690 | 1130 | 560 |
S10-M-125/10 | 125 | 280 | 1800 | 1.4 | 4.0 | 1205 | 710 | 1180 | 670 |
S10-M-160/10 | 160 | 340 | 2200 | 1.3 | 4.0 | 1255 | 720 | 1200 | 780 |
S10-M-200/10 | 200 | 400 | 2600 | 1.2 | 4.0 | 1295 | 740 | 1215 | 875 |
S10-M-250/10 | 250 | 470 | 3050 | 1.1 | 4.0 | 1340 | 755 | 1260 | 1115 |
S10-M-315/10 | 315 | 560 | 3650 | 1.0 | 4.0 | 1400 | 770 | 1320 | 1280 |
S10-M-400/10 | 400 | 680 | 4300 | 0.9 | 4.0 | 1500 | 860 | 1400 | 1490 |
S10-M-500/10 | 500 | 810 | 5150 | 0.9 | 4.0 | 1575 | 895 | 1430 | 1740 |
S10-M-630/10 | 630 | 1020 | 6200 | 0.8 | 4.5 | 1660 | 930 | 1545 | 2110 |
S10-M-800/10 | 800 | 1190 | 7500 | 0.7 | 4.5 | 1830 | 1070 | 1590 | 2625 |
S10-M-1000/10 | 1000 | 1450 | 10300 | 0.6 | 4.5 | 1935 | 1175 | 1685 | 2860 |
S10-M-1250/10 | 1250 | 1650 | 12000 | 0.6 | 4.5 | 1960 | 1170 | 1730 | 3330 |
S10-M-1600/10 | 1600 | 2040 | 14500 | 0.5 | 4.5 | 2325 | 1220 | 2120 | 3765 |
S10-M-2000/10 | 2000 | 2140 | 17820 | 0.5 | 4.5 | 2395 | 1260 | 2225 | 4530 |
>>S11 series 20KV three phase off -load tap changer distribution transformer
TYPE | Voltage ratio(kV) | Connection | No load Loss (W) | Load loss (W) | Io (%) | UK (%) | Dimensions (mm) | Weight (Kg) |
a | b | c | d | e | f |
S11-M-30/20 | 20(10) ±5%/0.4 | Yyn0 Dyn11 | 100 | 690/ 660 | 2.1 | 5.5 | 1100 | 700 | 1240 | 14 | 400 | 400 | 640 |
S11-M-50/20 | 130 | 1010/ 960 | 2.0 | 1130 | 710 | 1260 | 14 | 400 | 450 | 710 |
S11-M-63/20 | 150 | 1200/1150 | 1.9 | 1160 | 740 | 1270 | 14 | 400 | 450 | 780 |
S11-M-80/20 | 180 | 1440/1370 | 1.8 | 1200 | 770 | 1280 | 14 | 400 | 450 | 860 |
S11-M-100/20 | 200 | 1730/ 1650 | 1.6 | 1220 | 800 | 1300 | 14 | 400 | 450 | 900 |
S11-M-125/20 | 240 | 2080/ 1980 | 1.5 | 1270 | 840 | 1330 | 19 | 550 | 450 | 970 |
S11-M-160/20 | 290 | 2540/ 2420 | 1.4 | 1320 | 870 | 1350 | 19 | 550 | 550 | 1100 |
S11-M-200/20 | 340 | 3000/ 2860 | 1.3 | 1360 | 900 | 1380 | 19 | 550 | 550 | 1240 |
S11-M-250/20 | 400 | 3520/ 3350 | 1.2 | 1430 | 910 | 1430 | 19 | 550 | 650 | 1420 |
S11-M-315/20 | 480 | 4210/ 4010 | 1.1 | 1460 | 920 | 1450 | 19 | 550 | 650 | 1570 |
S11-M-400/20 | 570 | 4970/ 4730 | 1.0 | 1490 | 940 | 1470 | 19 | 660 | 750 | 1740 |
S11-M-500/20 | 680 | 5940/ 5660 | 1.0 | 1570 | 970 | 1540 | 19 | 660 | 750 | 1950 |
S11-M-630/20 | 810 | 6820 | 0.9 | 6.0 | 1650 | 1000 | 1580 | 19 | 660 | 850 | 2290 |
S11-M-800/20 | 980 | 8250 | 0.8 | 1750 | 1070 | 1650 | 19 | 820 | 850 | 2690 |
S11-M-1000/20 | 1150 | 11330 | 0.7 | 1830 | 1170 | 1690 | 19 | 820 | 850 | 2880 |
S11-M-1250/20 | 1380 | 13200 | 0.7 | 1900 | 1200 | 1790 | 19 | 820 | 850 | 3400 |
S11-M-1600/20 | 1660 | 15950 | 0.6 | 1950 | 1250 | 1850 | 19 | 820 | 900 | 4100 |
>>>>S9 series 35kV three phase Off-load tap changer power transformer
Capacity KVA | Voltage and tap range | Connection | No-load loss (kW) | Load loss (KW) | NO-load current (%) | Impedance (%) | Dimensions (mm) LxWxH |
HV (kV) | MV (kV) | LV (kV) |
50 | 35 | ± 5 | 0.4 | Dyn11 Yyn0 | 0.21 | 1.27/1.21 | 2.00 | 6.5 | 1100x845x1715 |
100 | 0.29 | 2.12/2.02 | 1.80 | 1190x915x1780 |
125 | 0.34 | 2.50/2.38 | 1.70 | 1220x1040x1780 |
160 | 0.36 | 2.97/2.83 | 1.60 | 1240x1070x1810 |
200 | 0.43 | 3.50/3.33 | 1.50 | 1380x780x1875 |
250 | 0.51 | 4.16/3.96 | 1.40 | 1540x880x1820 |
315 | 0.61 | 5.01/4.77 | 1.40 | 1440x800x1975 |
400 | 0.73 | 6.05/5.76 | 1.30 | 1660x825x1995 |
500 | 0.86 | 7.28/6.93 | 1.20 | 1710x865x2030 |
630 | 1.04 | 8.28 | 1.10 | 1630x1235x2070 |
800 | 1.23 | 9.90 | 1.00 | 1655x1415x2120 |
1000 | 1.44 | 12.15 | 1.00 | 1860x1435x2220 |
1250 | 1.76 | 14.67 | 0.90 | 1890x1640x2260 |
1600 | 2.12 | 17.55 | 0.80 | 2050x1720x2390 |
630 | 3.15 6.3 10.5 | Yd11 | 1.04 | 8.28 | 1.10 | 1630x1235x2070 |
800 | 1.23 | 9.90 | 1.00 | 1655x1415x2120 |
1000 | 1.44 | 12.15 | 1.00 | 1860x1435x2220 |
1250 | 1.76 | 14.67 | 0.90 | 1890x1640x2260 |
1600 | 2.12 | 17.55 | 0.80 | 2050x1720x2390 |
2000 | 2.72 | 19.35 | 0.70 | 2400x1900x2410 |
2500 | 3.20 | 20.70 | 0.60 | 2500x1930x2700 |
3150 | 35~ 38.5 | ± 5 | 3.15 6.3 10.5 | 3.80 | 24.30 | 0.56 | 7.0 | 2600x2100x2800 |
4000 | 4.52 | 28.80 | 0.56 | 2830 x2350x2855 |
5000 | 5.40 | 33.03 | 0.48 | 2930x2480x2930 |
6300 | 6.56 | 36.90 | 0.48 | 7.5 | 3150x2330x3220 |
8000 | ± 2 x 2.5 | 3.15 3.3 6.3 6.6 10.5 11 | YNd11 | 9.00 | 40.50 | 0.42 | 3295x3110x3345 |
10000 | 10.88 | 47.70 | 0.42 | 3450x3210x3440 |
12500 | 12.60 | 56.70 | 0.40 | 8.0 | 3620x3255x3500 |
16000 | 15.20 | 69.30 | 0.40 | 3980x3420x3650 |
20000 | 18.00 | 83.70 | 0.40 | 4030x3470x3690 |
25000 | 21.28 | 99.00 | 0.32 | 5050x4640x3930 |
31500 | 25.28 | 118.8 | 0.32 | 5120x4800x4030 |
|
>>>>S9 series 35kV three phase on-load tap changer power transformer
Type | Voltage compose and Tapping range (kV) | Connection | No-load Loss (kW) | Load loss (kW) | No- load current (I%) | Impedance voltage (%) | Transport weight (t) | Gross weight (t) | Dimensions L×W×H (mm) |
HV | LV |
SZ9-2000/35 | 35 ±3×2.5% | 6.3 10.5 | Yd11 | 2.88 | 18.7 | 1.00 | 6.5 | 4.93 | 5.97 | 3010×2070×2540 |
SZ9-2500/35 | 3.40 | 21.7 | 1.00 | 6.5 | 5.68 | 6.95 | 3040×2270×2610 |
SZ9-3150/35 | 4.04 | 26.0 | 0.90 | 7.0 | 6.08 | 7.90 | 3160×2300×2640 |
SZ9-4000/35 | 35 38.5 ±3×2.5% | 6.3 10.5 | 4.84 | 30.7 | 0.90 | 7.0 | 7.10 | 9.11 | 3300×2330×2890 |
SZ9-5000/35 | 5.80 | 36.0 | 0.85 | 7.0 | 8.47 | 10.86 | 3350×2520×3000 |
SZ9-6300/35 | 7.04 | 38.7 | 0.85 | 7.5 | 9.87 | 12.30 | 3680×2650×3050 |
SZ9-8000/35 | 9.84 | 42.8 | 0.75 | 7.5 | 12.55 | 15.30 | 4190×2930×3280 |
SZ9-10000/35 | 35 38.5 ±3×2.5% | 6.3 6.6 10.5 11 | Ynd11 | 11.6 | 50.6 | 0.75 | 7.5 | 14.70 | 17.86 | 4620×3160×3400 |
SZ9-12500/35 | 13.7 | 60.0 | 0.70 | 8.0 | 17.35 | 20.05 | 4740×3200×3540 |
SZ9-16000/35 | 16.0 | 73.0 | 0.70 | 8.0 | 19.45 | 23.74 | 4810×3360×3790 |
SZ9-20000/35 | 18.9 | 88.3 | 0.70 | 8.0 | 27.50 | 34.95 | 4880×3540×4150 |
SZ9-25000/35 | 22.4 | 104.4 | 0.65 | 8.0 | 32.51 | 40.22 | 4920×3920×4200 |
SZ9-31500/35 | 26.6 | 125.3 | 0.65 | 8.0 | 37.73 | 45.53 | 5010×4270×4460 |
****Frequency: 50Hz
Ningbo Tianan (Group) Co., Ltd. Was founded in 1969, is a national large
Enterprise, national key high-tech enterprise, industry key enterprises and Zhejiang provincial leading enterprise in power transmission and transforming
Industry. Under the company there are 1 R&D center, 10 specialized subsidiary
Companies, and more than 70 marketing offices. There are more than 2500 emplo--yee working in headquarter. The total asset sums up to 3.8 billion yuan (RMB).
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Tianan Group is one of the domestic manufacturers and scientific research
Enterprises of power transmission and transforming industry featuring largest scale, most variety, full specifications, and best quality. Besides, the company owns abundant technical development strength, the international first-class production
And test equipments, efficient and flexible management mechanism, a great
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Now the products include 126kV GIS combination apparatus, SF6 circuit breaker, 126kV&252kV power transformer, 252kV and below 252kV outdoor HV disconnecting switch and transformer, boxtype substation below 40.5kV, ring main unit
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