35kv_oil_type_transformer

35KV Transformer Introduction

35kV lines, as a key transmission voltage level, are used in power systems in many countries, primarily in regional power distribution and urban-rural power transmission.

TSTY manufactures power transformers in various voltage levels, including 35/0.4kV, 35/0.22kV, 35/0.38kV, and 35/0.4kV, tailored to each country's power grid. Our transformer capacities range from 15 to 31,500 kVA, catering to a wide range of applications.

TSTY Electric Co., Ltd.

35KV Transformer Parameters

S-11 series 50-2500KVA 33-38.5KV Oil-immersed transformer
Rated Capacity (kVA)	Voltage Combination			Vector Group	No-Load Loss(w)	Load Loss	No-Load Current (%)	Short Circuit Impedance (%)
Rated Capacity (kVA)	High Voltage（kV)	Tapping Range	Low Voltage (kV)	Vector Group	No-Load Loss(w)	Load Loss	No-Load Current (%)	Short Circuit Impedance (%)
50	33 35 38.5	±5% ±2×2.5%	0.4	Dyn 11 or Yyn0	170	1200	2.1	6.5
100					230	2010	2.0
125					270	2370	1.5
160					290	2820	1.4
200					340	3320	1.3
250					400	3950	1.2
315					480	4750	1.1
400					580	5740	1.0
500					680	6910	1.0
630					830	7860	0.9
800					980	9400	0.8
1000					1150	11500	0.7
1250					1400	13900	0.6
1600					1690	16600	0.6
2000					1990	19700	0.6
2500					2360	23200	0.6

S20 Oil-immersed Three-phase Double-winding No-load Voltage Regulation Power Transformers
Rated Capacity kVA	Voltage Combination			No-Load Loss kW	Load Loss(75℃) kW	Short-circuit Impedance %
Rated Capacity kVA	High Voltage（kV)	Tapping Range	Low Voltage (kV)	No-Load Loss kW	Load Loss(75℃) kW	Short-circuit Impedance %
3150	33 35 38.5	±5% ±2×2.5%	0.4	2.0	20.7	7
4000				2.3	24.6
5000				2.8	28.2
6300				3.4	31.5	8
8000				4.7	34.6
10000				5.7	40.8
12500				6.5	48.4
16000				7.9	59.2
20000

TSTY Power Transformer Design Advantages

①　Ceramic bottle with groove: protects the sealing gasket from aging by ultraviolet rays, directly solving the old problem of oil leakage in traditional transformers.

②　Double seal of tap changer: double insurance, no need to worry about oil leakage during installation

③　Ultra-low no-load loss: adopts step lamination process + high magnetic permeability oriented silicon steel sheet produced by Baosteel, the no-load loss is 5% lower than the national standard (GB/T 6451), and the annual operating electricity cost is significantly saved.

④　Adaptive temperature control system: intelligent heat dissipation design, dynamic adjustment of oil temperature, load loss is reduced by 8%-12%, especially suitable for fluctuating load scenarios

⑤　Energy efficiency certification: The whole series has passed the first-level energy efficiency certification, compared with the mainstream second-level energy efficiency products in the industry, the annual comprehensive efficiency is improved by 3%-5%.

TSTY Electric Co., Ltd.

Core Advantages Of 33kV 35kV Transformer

1. High power transmission and distribution efficiency

The 33kV voltage level is at the medium voltage level in the power system, which can increase the power transmission by about 50% compared with the 10kV system. Compared with higher voltage levels, its line insulation cost is reduced by more than 25%, and its power transmission and distribution efficiency is significantly improved.

2. Strong grid stability

This voltage level has a stronger short-circuit current carrying capacity. The winding structure designed by the flux balance principle can also reduce the impact of harmonic interference on the power grid.

3. Renewable energy adaptability

In the new energy grid connection scenario, the 33kV step-up transformer can realize the direct connection between the 10kV inverter output and the 110kV backbone network, reducing the loss of multi-stage boosting.

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