S 13/20/22-M series Oil-Immersed Transformer
Power
Three
Core-type Transformer
Oil-immersed Type Transformer
Two-winding Transformer
ISO9001-2000, ISO9001, CCC
Single-phase Transformer, Power Transformer, Distribution Transformer
Power Frequency
Ring
30kVA~20000kVA(20mva)
30 Years of Maintenance-Free
New Silicon Steel Sheet
up to 25mva
CHBEB
Composite Board
China
8504220000
Product Description

The S -M Series Oil-Immersed Distribution Transformer stands as a pinnacle of innovation and precision, a cutting-edge marvel designed for those who demand the utmost in reliability and performance. Building upon the esteemed S9 series, this three-phase transformer enhances and refines energy efficiency by skillfully adjusting loss coefficients and optimizing the copper-to-iron ratio. The result is a triumph of superior loss design paired with exceptional cost-effectiveness. At its core, this transformer boasts an iron core crafted from high-conductivity, low-loss silicon steel, resulting in significantly minimized no-load losses.
Our advanced high-voltage winding technology incorporates a sophisticated multi-layer structure, applicable to products up to 500kVA. For those transformers rated at 630kVA and beyond, we've introduced an innovative spiral type for low-voltage windings, ensuring enhanced electrical performance and formidable mechanical strength, particularly in the face of short circuits.
A standout feature of this transformer is its ingenious pan-seal structure. This design meticulously isolates transformer oil from external air, dramatically slowing oil aging and significantly boosting operational reliability. The oil tank design is further elevated by the use of corrugated plates that facilitate optimal oil circulation and superior heat dissipation. This pragmatic yet robust design ensures proficient welding, minimizes the risk of leaks, and enhances fluidity and thermal regulation, ensuring peak performance.



Table 1 Energy efficiency rating of 10 kV oil-immersed three-phase double-winding non-excitation voltage-regulating distribution transformer | |||||||||||||||||||
Rated capacity kVA | S22 1 Class SH25 | S20 2 Class SH21 | S13 3 Class SH15 | Short circuit impedance % | |||||||||||||||
Electrical steel strip | Amorphous alloy | Electrical steel strip | Amorphous alloy | Electrical steel strip | Amorphous alloy | ||||||||||||||
No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | ||||||||
Dynl1/Yznll | Yyn0 | ynl1/Yznl | Yyn0 | Dynll/Yznl | Yyn0 | Dynl1/Yznl | Yyn0 | Dyn11/Yznl | Yyn0 | Dynl1/Yzn1 | Yyn0 | ||||||||
30 | 65 | 455 | 430 | 25 | 510 | 480 | 70 | 505 | 480 | 33 | 535 | 510 | 80 | 630 | 600 | 33 | 630 | 600 | 4.0 |
50 | 80 | 655 | 625 | 35 | 735 | 700 | 90 | 730 | 695 | 43 | 780 | 745 | 100 | 910 | 870 | 43 | 910 | 870 | |
63 | 90 | 785 | 745 | 40 | 880 | 840 | 100 | 870 | 830 | 50 | 930 | 890 | 110 | 1090 | 1040 | 50 | 1090 | 1040 | |
80 | 105 | 945 | 900 | 50 | 1060 | 1010 | 115 | 1050 | 1000 | C0 | 1120 | 1070 | 130 | 1310 | 1250 | 60 | 1310 | 1250 | |
100 | 120 | 1140 | 1080 | 60 | 1270 | 1215 | 135 | 1265 | 1200 | 75 | 1350 | 1285 | 150 | 1580 | 1500 | 75 | 1580 | 1500 | |
125 | 135 | 1360 | 1295 | 70 | 1530 | 1450 | 150 | 1510 | 1440 | 85 | 1615 | 1540 | 170 | 1890 | 1800 | 85 | 1890 | 1800 | |
160 | 160 | 1665 | 1585 | 80 | 1870 | 1780 | 180 | 1850 | 1760 | 100 | 1975 | 1880 | 200 | 2310 | 2200 | 100 | 2310 | 2200 | |
200 | 190 | 1970 | 1870 | 95 | 2210 | 2100 | 215 | 2185 | 2080 | 120 | 2330 | 2225 | 240 | 2730 | 2600 | 120 | 2730 | 2600 | |
250 | 230 | 2300 | 2195 | 110 | 2590 | 2470 | 260 | 2560 | 2440 | 140 | 2735 | 2610 | 290 | 3200 | 3050 | 140 | 3200 | 3050 | |
315 | 270 | 2760 | 2630 | 135 | 3100 | 2950 | 305 | 3065 | 2920 | 170 | 3275 | 3120 | 340 | 3830 | 3650 | 170 | 3830 | 3650 | |
400 | 330 | 3250 | 3095 | 160 | 3660 | 3480 | 370 | 3615 | 3440 | 200 | 3865 | 3675 | 410 | 4520 | 4300 | 200 | 4520 | 4300 | |
500 | 385 | 3900 | 3710 | 190 | 4380 | 4170 | 430 | 4330 | 4120 | 240 | 4625 | 4400 | 480 | 5410 | 5150 | 240 | 5410 | 5150 | |
630 | 460 | 4460 | 250 | 5020 | 510 | 4960 | 320 | 5300 | 570 | 6200 | 320 | 6200 | 4.5 | ||||||
800 | 560 | 5400 | 300 | 6075 | 630 | 6000 | 380 | 6415 | 700 | 7500 | 380 | 7500 | |||||||
1000 | 665 | 7415 | 360 | 8340 | 745 | 8240 | 450 | 8800 | 830 | 10300 | 450 | 10300 | |||||||
1250 | 780 | 8640 | 425 | 9720 | 870 | 9600 | 530 | 10260 | 970 | 12000 | 530 | 12000 | |||||||
1600 | 940 | 10440 | 500 | 11745 | 1050 | 11600 | 630 | 12400 | 1170 | 14500 | 630 | 14500 | |||||||
2000 | 1085 | 13180 | 550 | 14000 | 1225 | 14640 | 710 | 14800 | 1360 | 18300 | 720 | 18300 | 5.0 | ||||||
2500 | 1280 | 13360 | 670 | 15450 | 1440 | 14840 | 860 | 16300 | 1600 | 21200 | 865 | 21200 |



Our advanced production equipment is the backbone of our product quality, standing as a testament to our commitment to excellence.
At CHBEB, we have made substantial investments in cutting-edge machinery sourced from renowned German and U.S. manufacturers, establishing state-of-the-art production lines that promise and deliver consistent, reliable quality.

constantly engaging with clients to showcase CHBEB's products on a global stage, fueled by our ambition to deliver excellence worldwide.
