Algeria Main Power Transformer
Category:
Product Description
A power transformer is a core piece of equipment in a power system, responsible for voltage transformation and power transmission. It is typically installed in power plant step-up substations, hub substations, and large user base main step-down substations, transforming the generator output voltage or the voltage of the upstream power grid to a voltage level suitable for downstream transmission or distribution. TSTY provides 66kV, 110kV, and 220kV power transformers.
66kV Power Transformer
66kV transformers belong to the category of high-voltage power transformers and are mainly used in power transmission and distribution networks at the 66kV voltage level. Their rated frequency is 50Hz, and their capacity ranges from 2000kVA to 100MVA.
In terms of capacity level, 66kV transformers mainly serve the following roles:
Below 30MVA: Main transformers for small and medium-sized substations, main step-down transformers for industrial users;
30MVA~63MVA: Main transformers for urban substations, main step-down transformers for large industrial users;
63MVA~75MVA: Main transformers for large substations, main transformers for new energy step-up substations;
|
Rated capacity |
high Voltage |
Tap range |
low voltage |
Connection Group |
No-load loss |
Load loss |
No-load current |
Impedance voltage(%) |
|
2000 |
60 |
±8×1.25% |
6.3 |
YNd11 |
1.8 |
14.7 |
0.3 |
8.0 |
|
2500 |
2.1 |
17.4 |
0.3 |
|||||
|
3150 |
2.4 |
20.7 |
0.3 |
|||||
|
4000 |
3.1 |
24.6 |
0.3 |
|||||
|
5000 |
3.7 |
27.6 |
0.3 |
|||||
|
6300 |
4.4 |
30.8 |
0.3 |
9.0 |
||||
|
8000 |
5.3 |
36.5 |
0.3 |
|||||
|
10000 |
6.2 |
43.0 |
0.3 |
|||||
|
12500 |
7.4 |
51.1 |
0.3 |
|||||
|
16000 |
8.9 |
62.8 |
0.3 |
|||||
|
20000 |
10.6 |
76.1 |
0.3 |
|||||
|
25000 |
12.5 |
90.0 |
0.3 |
|||||
|
31500 |
14.8 |
108.0 |
0.3 |
|||||
|
40000 |
17.7 |
126.9 |
0.3 |
|||||
|
50000 |
20.9 |
150.3 |
0.3 |
|||||
|
63000 |
24.7 |
178.2 |
0.3 |
|||||
|
75000 |
28.2 |
203.1 |
0.3 |
|||||
|
90000 |
32.3 |
232.9 |
0.3 |
|||||
|
100000 |
34.9 |
252.0 |
0.3 |
110kV Main Transformer
The 110kV main transformer is the most common voltage level in urban power grids and industrial user substations, and it also serves as a watershed in the power system's transmission and distribution network. Common 110kV power transformer capacities include: 6300kVA, 8000kVA, 10000kVA, 12500kVA, 16000kVA, 20000kVA, 25000kVA, 31500kVA, 40000kVA, 50000kVA, and 63000kVA.
|
S18-6300~180000/110kV Oil-Immersed Transformer |
||||||||
|
Rated Capacity(kVA) |
Voltage Combination |
Vector Group |
No-Load Loss (kW) |
Load Loss |
No-Load Current (%) |
Impedance (%) |
||
|
High Voltage (kV) |
Tapping Range |
Low Voltage (kV) |
||||||
|
6300 |
110 |
±2x2.5% |
6.3 |
YNd11 |
5.90 |
33 |
0.62 |
10.5 |
|
8000 |
7.10 |
40 |
0.62 |
|||||
|
10000 |
8.40 |
48 |
0.58 |
|||||
|
12500 |
9.90 |
56 |
0.58 |
|||||
|
16000 |
12.00 |
69 |
0.54 |
|||||
|
20000 |
14.10 |
84 |
0.54 |
|||||
|
25000 |
16.60 |
99 |
0.50 |
|||||
|
31500 |
19.70 |
117 |
0.48 |
|||||
|
40000 |
23.50 |
141 |
0.45 |
|||||
|
50000 |
28.20 |
166 |
0.42 |
|||||
|
63000 |
33.30 |
198 |
0.38 |
|||||
|
75000 |
13.8 |
37.80 |
224 |
0.33 |
12~14 |
|||
|
90000 |
43.50 |
258 |
0.30 |
|||||
|
120000 |
54.20 |
320 |
0.27 |
|||||
|
150000 |
64.10 |
379 |
0.24 |
|||||
|
180000 |
72.00 |
434 |
0.20 |
|||||
|
S20-6300~180000/110kV Oil-Immersed Transformer |
||||||||
|
Rated Capacity(kVA) |
Voltage Combination |
Vector Group |
No-Load Loss (kW) |
Load Loss |
No-Load Current (%) |
Impedance (%) |
||
|
High Voltage (kV) |
Tapping Range |
Low Voltage (kV) |
||||||
|
6300 |
110 |
±2x2.5% |
6.3 |
YNd11 |
4.80 |
32 |
0.62 |
10.5 |
|
8000 |
5.80 |
38 |
0.62 |
|||||
|
10000 |
6.80 |
45 |
0.58 |
|||||
|
12500 |
8.10 |
53 |
0.58 |
|||||
|
16000 |
9.80 |
65.7 |
0.54 |
|||||
|
20000 |
11.40 |
79 |
0.54 |
|||||
|
25000 |
13.50 |
94 |
0.50 |
|||||
|
31500 |
16.00 |
111 |
0.48 |
|||||
|
40000 |
19.10 |
133 |
0.45 |
|||||
|
50000 |
22.90 |
158 |
0.42 |
|||||
|
63000 |
27.00 |
187 |
0.38 |
|||||
|
75000 |
13.8 |
30.70 |
212 |
0.33 |
12~14 |
|||
|
90000 |
35.40 |
245 |
0.30 |
|||||
|
120000 |
44.10 |
303 |
0.27 |
|||||
|
150000 |
52.10 |
359 |
0.24 |
|||||
|
180000 |
58.50 |
411 |
0.20 |
|||||

220kV Main Transformer
The 220kV main transformer is the core equipment of a regional power grid, widely used in urban hub substations, large industrial users, and new energy booster stations. Common single-unit main transformer capacities in power systems are 120MVA, 150MVA, 180MVA, and 240MVA.
|
S18-220KV 31500KVA-240000KVA Power Transformer |
|||||||||
|
Rated Capacity (KVA) |
Voltage Combination and Tapping Range |
Vector Group |
No Load Loss (KW) |
Load Loss (KW) |
No Load Current (%) |
Capacity Allocation (%) |
Impedance (%) |
||
|
HV (KV) |
MV (KV) |
LV(KV) |
|||||||
|
31500 |
220±8x1.25% 230±8x1.25% |
69 115 121 |
6.3 |
YNyn0d11 |
28 |
145 |
0.77 |
100/100/100 |
HV-MV |
|
40000 |
33 |
174 |
0.73 |
||||||
|
50000 |
38 |
205 |
0.74 |
||||||
|
63000 |
45 |
244 |
0.69 |
||||||
|
90000 |
10.5 |
58 |
315 |
0.54 |
|||||
|
120000 |
74 |
390 |
0.54 |
||||||
|
150000 |
86 |
463 |
0.48 |
||||||
|
180000 |
99 |
568 |
0.48 |
||||||
|
240000 |
120 |
704 |
0.43 |
||||||
|
S22-220KV 31500KVA-240000KVA Power Transformer |
|||||||
|
Rated Capacity (KVA) |
Voltage Combination and Tapping Range |
Vector Group |
No Load Loss (KW) |
Load Loss (KW) |
No Load Current (%) |
Impedance (%) |
|
|
HV (KV) |
LV (KV) |
||||||
|
31500 |
220±8x1.25% |
6.3 |
YNd11 |
20 |
115 |
0.48 |
12-14 |
|
40000 |
23 |
134 |
0.5 |
||||
|
50000 |
28 |
161 |
0.45 |
||||
|
63000 |
33 |
188 |
0.45 |
||||
|
90000 |
42 |
246 |
0.38 |
||||
|
120000 |
10.5 |
51 |
304 |
0.38 |
|||
|
150000 |
60 |
360 |
0.35 |
||||
|
180000 |
70 |
413 |
0.32 |
||||
|
120000 |
66 |
53 |
303 |
0.38 |
|||
|
150000 |
62 |
355 |
0.37 |
||||
|
180000 |
73 |
406 |
0.32 |
||||
|
240000 |
91 |
504 |
0.25 |
||||

TSTY's Advantages
TSTY Electric Co., Ltd is a national high-tech enterprise with a history of more than 30 years, focusing on the intelligent manufacturing of power transmission and distribution equipment. It mainly deals in oil-immersed, dry-type transformers, box-type substations, high and low voltage switchgear and have obtained ISO 9001, CCC, CE, IEC, UL,GOST and other certifications, 158 patents, and are exported to more than 100 countries.
Factory scale: 250,000 square meters of park, 15 production lines (including 3 intelligent lines), equipped with 220+ intelligent equipment.
Production capacity efficiency: annual production capacity:25000 units transformer+ 10000 HV LV switchgear, product qualification rate> 99.8%.

Project Case
TSTY products are exported to more than 100 countries and regions, serving power projects in various regions.

TSTY VS Others
|
Process |
TSTY Approach |
Conventional Practice |
|
Bolt Material |
Stainless-steel bolts · Prevent corrosion-related seizure |
Standard galvanized bolts · May seize after years of exposure |
|
Corner Treatment |
Rounded corners · Improved coating adhesion |
Sharp corners retained · Greater risk of coating peeling |
|
Surface Pretreatment |
Shot blasting + pickling + phosphating |
Basic grinding or direct painting |
|
Coating System |
C5-class electrostatic powder coating · 150 μm · >1,000 h salt-spray resistance |
Conventional paint · 90–100 μm |
|
Lifting Protection |
Rubber protective sleeves · Damage-free handling and delivery |
Wire ropes in direct contact · Risk of impact and coating damage |



Certificates
All TSTY transformer products have passed CE, UL,IEC, SGS, GOST and other certifications.
