SG18 Type H-Class Insulated Dry-Type Power Transformer
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Product Description
- 产品描述
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Class H insulation
Dry-type transformers come in insulation thermal classes such as B, F, H, and C, with corresponding maximum allowable temperatures of 130°C, 155°C, 180°C, and 220°C, respectively. The products utilize DuPont’s new materials and advanced manufacturing processes; the SG(B)-type dry-type transformers produced using these technologies have achieved an insulation thermal class of H, while key components have reached a thermal class of C.
The SG(B) series products are dry-type transformers featuring today’s high safety performance. All insulating materials are non-combustible, self-extinguishing, and non-toxic. The SG(B) series is particularly well-suited for applications with stringent fire protection requirements, significant load fluctuations, and harsh environments characterized by pollution and high humidity—such as airports, power plants, metallurgical facilities, hospitals, high-rise buildings, shopping centers, densely populated residential areas, as well as power stations, subways, ships, petrochemical facilities, and more.
Safety
It demonstrates even greater superiority in special environments such as nuclear power plants and nuclear submarines. Fans and housings can be provided according to user requirements.
Reliable
The special coil design, manufacturing processes, and materials used in the new SG(B) series products deliver outstanding triple-proof performance—protection against moisture, mold, and salt spray—and enable the products to withstand thermal shock without ever cracking. The insulation system, based on aromatic polyamides, maintains excellent electrical and mechanical properties throughout the transformer’s entire service life. These products are resistant to aging, shrinkage, and compression, and boast exceptional elasticity, ensuring that even after several years of use, the coils remain structurally intact and can reliably withstand the stresses of short-circuit conditions.
Environmental protection
The new SG (B) series products can be disassembled, recycled, and reused after their service life, meeting user requirements and overcoming the shortcomings of epoxy-resin-cast dry-type transformers—where the resin and fiberglass are permanently fused into a single unit, making them non-disassemblable and environmentally polluting once their service life is over.
Strong overload capacity
The new SG(B) series products feature a novel structure, advanced materials, and cutting-edge manufacturing processes. They offer excellent heat dissipation performance, long thermal life, and strong overload capacity, enabling them to operate safely and reliably for extended periods even under 120% overload conditions. In an IP23 environment, these units can run at full load continuously without the need for forced air cooling.
Main Technical Parameters
Technical Parameters of 10kV-Class SG10 Type H-Grade Insulated Dry-Type Power Transformer
Rated Capacity (kVA) High-voltage (kV) High-voltage tap range Low-voltage (kV) Connection Group Designation Short-circuit impedance (%) No-load loss (kW) Load loss (kW) No-load current (%) Insulation class Noise (dB) SG(B)9 SG(B)10 SG(B)9 SG(B)10 30 6, 6.3, 10, 10.5, 11 ±5% or ±2 × 2.5% 0.4 Yyn0, Dyn11 4 220 190 800 760 2.3 H 40 50 310 270 1130 1070 2.2 40 80 420 370 1560 1480 1.7 40 100 450 400 1780 1690 1.7 40 125 530 470 2100 1980 1.5 41 160 610 540 2410 2280 1.5 42 200 700 620 2870 2710 1.3 42 250 810 720 3120 2960 1.3 44 315 990 880 3930 3730 1.1 46 400 1100 980 4520 4280 1.1 46 500 1310 1160 5530 5230 1.1 47 630 1510 1340 6660 6290 0.9 47 630 6 1460 1300 6750 6400 0.9 47 800 1710 1520 7880 7460 0.9 48 1000 1990 1770 9210 8760 0.9 48 1250 2350 2090 10980 10370 0.9 49 1600 2760 2450 13270 12580 0.9 50 2000 3400 3050 16370 15560 0.7 52 2500 4000 3600 19460 18450 0.7 55
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The company primarily engages in the manufacturing and sales of various types of power transmission equipment, including 35 kV and below resin-encapsulated dry-type transformers, oil-immersed transformers, special-purpose transformers, and high- and low-voltage substations.
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