35 kV transformers — oil-immersed and dry-type, including OLTC
35/0.4 kV transformers for direct step-down to consumers and 35/6–10 kV for main step-down substations. Oil-immersed S11–S22, dry-type SCB10–SCB13; OLTC version built to your questionnaire.
Oil-immersed transformer 35/0.4 kV — TM / TMG type
35 kV class power transformers for industrial sites, open-pit mines and remote facilities where it pays to step down the voltage in one stage. Reduced core flux density lowers noise, and S13 has 30 % lower no-load losses than S11.
| Rating, kVA | No-load losses S11, W | No-load losses S13, W | Load losses, W | Uk, % | |
|---|---|---|---|---|---|
| 50 | 160 | 112 | 1 200 / 1 140 | 6,5 | request |
| 100 | 230 | 161 | 2 010 / 1 910 | 6,5 | request |
| 125 | 270 | 189 | 2 370 / 2 260 | 6,5 | request |
| 160 | 280 | 196 | 2 820 / 2 680 | 6,5 | request |
| 200 | 340 | 238 | 3 320 / 3 160 | 6,5 | request |
| 250 | 400 | 280 | 3 950 / 3 760 | 6,5 | request |
| 315 | 480 | 336 | 4 750 / 4 530 | 6,5 | request |
| 400 | 580 | 406 | 5 740 / 5 470 | 6,5 | request |
| 500 | 680 | 476 | 6 910 / 6 580 | 6,5 | request |
| 630 | 830 | 581 | 7 860 | 6,5 | request |
| 800 | 980 | 686 | 9 400 | 6,5 | request |
| 1 000 | 1 150 | 805 | 11 500 | 6,5 | request |
| 1 250 | 1 400 | 980 | 13 900 | 6,5 | request |
| 1 600 | 1 690 | 1 183 | 16 600 | 6,5 | request |
| 2 000 | 1 990 | 1 393 | 19 700 | 6,5 | request |
| 2 500 | 2 360 | 1 652 | 23 200 | 6,5 | request |
Data from the partner factory's catalogue. Where load losses are given as two figures, the first is for Dyn11, the second for Yyn0.
Oil-immersed transformer with OLTC — TMN type
Transformers with an on-load tap changer (OLTC). They keep the consumer's voltage stable when the supply network fluctuates, without disconnecting the load.
Dry-type transformer 35 kV — TSL type
35 kV class dry-type transformers step 35 kV network voltage directly down to 0.4 kV. Installed indoors where an oil-immersed transformer is prohibited or undesirable.
| Rating, kVA | No-load losses SCB10, W | No-load losses SCB11, W | No-load losses SCB12, W | No-load losses SCB13, W | Load losses SCB10, W | Load losses SCB11, W | Load losses SCB12, W | Load losses SCB13, W | Uk, % | |
|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 450 | 405 | 360 | 315 | 1 420 | 1 420 | 1 420 | 1 278 | 6,0 | request |
| 100 | 630 | 567 | 504 | 441 | 2 090 | 2 090 | 2 090 | 1 881 | 6,0 | request |
| 160 | 790 | 711 | 632 | 553 | 2 810 | 2 810 | 2 810 | 2 529 | 6,0 | request |
| 200 | 880 | 792 | 704 | 616 | 3 320 | 3 320 | 3 320 | 2 988 | 6,0 | request |
| 250 | 990 | 891 | 792 | 693 | 3 800 | 3 800 | 3 800 | 3 420 | 6,0 | request |
| 315 | 1 170 | 1 053 | 936 | 819 | 4 510 | 4 510 | 4 510 | 4 059 | 6,0 | request |
| 400 | 1 370 | 1 233 | 1 096 | 959 | 5 410 | 5 410 | 5 410 | 4 869 | 6,0 | request |
| 500 | 1 620 | 1 458 | 1 296 | 1 134 | 6 650 | 6 650 | 6 650 | 5 985 | 6,0 | request |
| 630 | 1 860 | 1 674 | 1 488 | 1 302 | 7 690 | 7 690 | 7 690 | 6 921 | 6,0 | request |
| 800 | 2 160 | 1 944 | 1 728 | 1 512 | 9 120 | 9 120 | 9 120 | 8 208 | 6,0 | request |
| 1 000 | 2 430 | 2 187 | 1 944 | 1 701 | 10 400 | 10 400 | 10 400 | 9 360 | 6,0 | request |
| 1 250 | 2 830 | 2 547 | 2 264 | 1 981 | 12 700 | 12 700 | 12 700 | 11 430 | 6,0 | request |
| 1 600 | 3 240 | 2 916 | 2 592 | 2 268 | 15 400 | 15 400 | 15 400 | 13 860 | 6,0 | request |
| 2 000 | 3 820 | 3 438 | 3 056 | 2 674 | 18 200 | 18 200 | 18 200 | 16 380 | 6,0 | request |
| 2 500 | 4 450 | 4 005 | 3 560 | 3 115 | 21 800 | 21 800 | 21 800 | 19 620 | 6,0 | request |
Data from the partner factory's catalogue.
Power transformer 35 kV S18 / S20 / S22
35 kV power transformers for main step-down substations of industrial plants, open-pit mines and distribution networks: they step 35 kV down to 6 or 10 kV. Three energy-efficiency levels: S18, S20 and S22.
| Rating, kVA | No-load losses S18, kW | No-load losses S20, kW | No-load losses S22, kW | Load losses S18, kW | Load losses S20, kW | Load losses S22, kW | Uk, % | |
|---|---|---|---|---|---|---|---|---|
| 3 150 | 2,4 | 2 | 1,7 | 21,9 | 20,7 | 20,7 | 7,0 | request |
| 4 000 | 2,9 | 2,3 | 2 | 25,9 | 24,6 | 24,6 | 7,0 | request |
| 5 000 | 3,5 | 2,8 | 2,4 | 29,7 | 28,2 | 28,2 | 7,0 | request |
| 6 300 | 4,2 | 3,4 | 2,9 | 33,3 | 31,5 | 31,5 | 8,0 | request |
| 8 000 | 5,8 | 4,7 | 4 | 36,5 | 34,6 | 34,6 | 8,0 | request |
| 10 000 | 7 | 5,7 | 4,8 | 43 | 40,8 | 40,8 | 8,0 | request |
| 12 500 | 8 | 6,5 | 5,5 | 51,1 | 48,4 | 48,4 | 8,0 | request |
| 16 000 | 9,7 | 7,9 | 6,7 | 62,5 | 59,2 | 59,2 | 8,0 | request |
| 20 000 | 11,5 | 9,4 | 7,9 | 75,5 | 71,6 | 71,6 | 8,0 | request |
| 25 000 | 13,6 | 11,1 | 9,4 | 89,3 | 84,6 | 84,6 | 10,0 | request |
| 31 500 | 16,2 | 13,1 | 11,1 | 106,4 | 100,8 | 100,8 | 10,0 | request |
Data from the partner factory's catalogue.
How we work
- Questionnaire or specificationSend us a questionnaire, specification or drawing. Within one working day we will reply with an indicative price and lead time; the firm price follows after engineering review.
- Engineering to your requirementsThe factory prepares drawings to your specification: voltages, vector group, losses, dimensions, bushings. We agree them with you before production starts.
- Contract and prepaymentWe work under a supply contract with a Russian legal entity. The manufacturing time is fixed in the contract.
- Manufacturing 25–45 daysStandard manufacturing time at the factory is 25–45 calendar days from production start.
- Factory acceptanceFactory acceptance tests. We send photos and video of your transformer and the test reports before shipment.
- Delivery and documentsDelivery to site, customs clearance, technical passport and test reports in Russian.
Partner factory
- Factory quality management system to ISO 9001, ISO 14001 and ISO 45001
- 20 transformer types have passed state type tests in China
- Built to the customer's drawing and requirements, including non-standard voltages and designs
- Energy efficiency classes 1–3 per GB 20052-2024: you can choose a transformer with minimum losses