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SZ13-MT 10KV On-load Capacity and Voltage Regulation Fully Sealed Oil-immersed Distribution Transformer

Name: SZ13-MT 10KV On-load Capacity and Voltage Regulation Fully Sealed Oil-immersed Distribution Transformer
Brand: Zhejiang Tenrony Electricity Co., Ltd.
Availability: InStock

The SZ13 series oil-immersed distribution transformer can change the tap position of the transformer through the on-load tap changer without disconnecting the voltage and current, thereby altering the voltage ratio of the transformer. This oil-immersed distribution transformer enables the provision of high-quality stable voltage to users even when the grid voltage fluctuates. Compared with similar S9 products, the no-load loss is reduced by 20% and the load loss by 5%. The barrel-shaped oil tank and plate-type radiator ensure a safe and reliable overall structure, complete protection measures, and a compact and aesthetically pleasing appearance.

Products

Features

The SZ13 oil-immersed distribution transformer autotransformer structure can realize automatic voltage regulation under load within the range of ±20%

With excellent control performance and communication function, it realizes the "four remote" functions of telemetry, remote signal, remote adjustment and remote control

SZ13 oil-immersed distribution transformer adopts unique anti-interference measures to ensure the normal operation of the controller

The controller is equipped with high and low position limit protection to prevent the tap switch from jamming

The oil tank of the on-load tap changer and the oil tank of the autotransformer body are isolated

Small volume, large capacity, light weight, low loss, easy to install

SZ13 oil-immersed distribution transformer has significant effect of reducing energy consumption and saving energy

High cost performance and high reliability

Technical Parameters

Pressure regulating autotransformer

(1) Rated voltage: 6kv, 10kv, 35kv;

(2) Rated capacity: 500kVA to 6000kVA;

(3) Rated frequency: 50Hz;

(4) Number of phases: 3 phases;

(5) Cooling mode: oil immersion self-cooling;

(6) Wiring mode: three-phase three-wire star connection;

(7) Tap level: 7 or 9;

(8) Pressure adjustment range: -10%~~+10%, -5%~~+15%,0~~+20%;

Automatic Controller

(1) Working power supply: 100~~264V AC/DC;

(2) Rated power: 20W;

(3) Rated frequency: 50Hz;

(4) Analog inputs: 2 channels of 0-220V voltage input, 1 channel of 0-5A current input, and 1 channel of platinum resistance oil temperature input.

(5) Switching quantity: 17 switch input and 6 switch output

(6) Measurement accuracy: 0.5 grade

(7) Anti-interference: Complies with IEC61000-4

Environmental conditions

(1) Altitude: below 2000 meters;

(2) Ambient temperature: the highest temperature is +50℃, the lowest temperature is-35℃;

(3) Pollution level: Grade ⅲ;

(4) Outdoor wind speed not more than 35m/s;

(5) The horizontal acceleration of the earthquake is not greater than 3m/ s2, the vertical acceleration is not greater than 1.5m/ s2, and the safety factor is greater than 1.67.

Diagram

Structural Features

Core

The core is made of high-permeability grain-oriented cold-rolled silicon steel sheets. It is a core-type core with a fully skewed lapped core structure. The core column has a multi-step circular cross-section, and the core yoke and core have the same cross-section.

Windings

The windings adopt corrugated oil channels, no varnish impregnation process, and are bound with tight straps. All windings are concentric coils. The corresponding taps of the high and low voltage coils are led to the on-load tap changer, allowing the transformer capacity and voltage to be changed without power interruption.

Safety protection device

Transformers with a capacity of 160-630 kVA are equipped with pressure relief valves.

Oil temperature measurement device

All transformers are equipped with a glass thermometer socket, which is located at the top of the oil tank and extends into the oil by 120 ± 10 mm.

Transformer oil tank

The transformer oil tank is made of corrugated walls, with a dust-proof spray coating on the surface and a firm paint film. The corrugated cooling fins not only have a cooling function but also a "breathing" function. The elasticity of the corrugated cooling fins can compensate for the volume changes of the transformer due to temperature fluctuations.

Success Stories

Alateng Mining Co., Ltd. in Inner Mongolia is located at the end of a 10kV power supply line with a total length of approximately 40km, consisting of LGJ-95 and LGJ-70 conductors. The LGJ-95 section spans about 36km, while the LGJ-70 section covers around 3km.

Alateng Mining Co., Ltd.'s primary equipment load includes: 110kW air compressor (1 unit), 132kW air compressor (1 unit), 2132kW hoists, 175kW crusher, 190kW cone crusher, 2210kW ball mills, 290kW blowers, 245kW blowers, and 2132kW slurry pumps. The total transformer capacity is 3470kVA. Prior to installing the SVR line automatic voltage regulator, the equipment could not start normally, with a voltage drop of approximately 3kV during startup. This effectively resolved the voltage issues for Alateng Mining Co., Ltd., earning unanimous praise from users.

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