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800kVA Outdoor on-Load Transformer Sz11
Substation Accessories

800kVA Outdoor on-Load Transformer Sz11 | RFQ Sourcing Details

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Product specs

CategorySubstation Accessories
Unitset
ApplicationPower, Electronic, Instrument, Lighting, Rectifier, Audio, Power Distribution System
BrandSinm
CertificationISO , ISO9001
Coil NumberAutotransformer
Coil StructureToroidal
Cooling MethodOil-immersed Type Transformer
CategorySubstation Accessories
AvailabilityInquiry required
Updated2026-05-26

Buyer's Digest

Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Substation Accessories. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.

Original product description

On load tap changer transformer plays an important role in power system.It can not only stabilize the load center voltage, but also connect the power grid, adjust load current, improve reactive power distribution etc.Its basic principle is to lead out several taps from the coil on one side of the transformer, and switch from one tap to another through OLTC, without cutting off the load current.So as to change the effective number of turns and achieve the purpose of voltage regulation.

On load voltage regulation technology of transformer is widely used in distribution system, and also in step-up transformer of power plant.

At present, almost all the large capacity transformers in the power system adopt on load voltage regulators,It is also equipped with a perfect low-voltage distribution network structure and sufficient reactive power compensation capacity to ensure the safe operation of the power grid and meet the requirements of customers for power quality.

Product features 1.No load voltage regulating transformer need to adjust the tap of high-voltage side only when the power is cut off, so as to change the ratio of the transformer to regulate the voltage at the low-voltage side.Its regulation range is small, generally within ± 5%, It can only be adjusted once or twice a year.Most transformers in power system are no-load tap transformers.

2.The on load tap changing transformer has a special switch, which can change the tap position without power off (with load).Its voltage regulation range is large, generally more than 15% or even up to 30%, and it can be adjusted automatically for several times a day.

3.No excitation voltage regulation refers to no-load voltage regulation,which can be adjusted only when the transformer is off.On load tap chaning transformer can change the voltage by changing the tap position when it is on running.

4.OLTC switch has the advantages of frequent on-off, no spark and long service life.The traditional trigger circuit of power electronic switch has the problem of electrical isolation.The application of optical fiber communication technology to the medium and high voltage trigger control system can effectively solve the problem of high and low voltage electrical isolation.

sz11 three phase oil immersed transformer series parameters Rated capacity ( kVA ) High voltage ( kV ) High voltage tapping range ( % ) Low

800kVA | Applications and Buyer Notes

800kVA is organized as a sourcing-ready Substation Accessories reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time que

Applications

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Key specifications

Category
Substation AccessoriesBased on visible page data; confirm exact value in the RFQ.
Unit
setBased on visible page data; confirm exact value in the RFQ.
Application
Power, Electronic, Instrument, Lighting, Rectifier, Audio, Power Distribution SyBased on visible page data; confirm exact value in the RFQ.
Brand
SinmBased on visible page data; confirm exact value in the RFQ.
Certification
ISO , ISO9001Based on visible page data; confirm exact value in the RFQ.
Coil Number
AutotransformerBased on visible page data; confirm exact value in the RFQ.
Coil Structure
ToroidalBased on visible page data; confirm exact value in the RFQ.
Cooling Method
Oil-immersed Type TransformerBased on visible page data; confirm exact value in the RFQ.

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FAQ

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Source mix: ugc

Key specifications

CategorySubstation Accessories
Unitset
ApplicationPower, Electronic, Instrument, Lighting, Rectifier, Audio, Power Distribution System
BrandSinm
CertificationISO , ISO9001
Coil NumberAutotransformer
Coil StructureToroidal
Cooling MethodOil-immersed Type Transformer
CoreCore-type Transformer
Frequency50Hz
Frequency CharacteristicsPower Frequency
Input Voltage400V/3kv/6kv/10kv/20kv/35kv
Model NO.SZ11
OriginZhejiang, China
Output Voltage110V/220V/380/V440V/3kv/11kv
PhaseThree
Product NameOil Immersed Power Transformer
Rated Capacity30-3000kVA
Shape of CoreRing
Trademarksinm
TypeOil-Filled Transformer
UsePower
Warranty2 Years
Winding TypeTwo-winding Transformer

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