33kV Step-down Three-Phase Distribution-transformer

Distribution-Step-down-Three-Phase-transformer-upto-33kV

General:

33kV series Medium-voltage transformer is a kind of low-loss, low noise, low partial discharge, low temperature rise and energy-saving transformer classified as S9 series( with no-load tap changer,OCTC) and SZ9 (with on-load tap changer,OLTC) series. It is applicable to the 33kV power transmission and transformation system. The new design is completely comply with the IEC standards. The transformer is sealed structure so it can protect the insulating oil from getting pollution and aging.

CTSS is renowned and appreciated by its reliable products performance and integrated services.

Standards:

u00d8 IEC-76 .1-1993 Power Transformers: General

u00d8 IECc-76 .2-1993 Power Transformers: Temperature Rise

u00d8 IEC-60076-3: 2000 Power Transformers Insulation Levels, Dielectric Tests And External Clearances In Air

u00d8 IEC60076-4-2002 Power Transformers Part4 Guide To The Lighting Impulse And Switching Impulse Testing-Power Transformers And Reactors

u00d8 IEC-60076-5:2000 Power Transformers Ability To Withstand Short Circuit

u00d8 JB/T3837-1996 Approaches For Editing Type Of Transformer

u00d8 GB1094.1.2-1996 Manufacturing Standard Of Power Transformer

u00d8 GB1094.3.5-2003 Manufacturing Standard Of Power Transformer

u00d8 GB/T 6451-2008 Technical Parameters And Requirements Of The Three-Phase Oil-Immersed Power Transformer

Features:

u00d8 Low loss: No-load loss is 40% lower and on-load loss is 15% lower than required in GB6451-1999 National standard.

u00d8 Low noise: Less than 60dB, which can be reached to less than 58 is special requirements is indicated.

u00d8 Low partial discharge: strictly insist the no-dust work and blunt all the metallic parts and insulation parts to make sure the partial discharge of110kV ratio transformer less than 100pc and 200kV ratio transformer less than 70pc.

u00d8 Strong mechanical strength and short-circuit withstand ability: winding inner hard support, double dovetail block, upper and lower insulation are integrated press plate.

u00d8 Pretty outline and compact structure

u00d8 100% guaranteed no leakage



Brief specification:

u00d8 Voltage class: 33kV

u00d8 Capacity: 630~63000kVA

u00d8 Short circuit impedance: 6.5-10.5%

u00d8 No load current: <0.3~1.2%

u00d8 Losses: no-load losses is fully comply with IEC standard requirements

Typical specification:

u00d8 Model: 630-33kV

u00d8 Rated voltage:33kV

u00d8 Rated Capacity:630kVA

u00d8 Type: Three Phases,On load tap changer (OLTC) ,Step down Distribution Transformer

33kV power system of power plant, substation, mining enterprise, steel plant, residential area, hospital building and etc.

CTSS (China Transpowers Electric Co.,Limited) is renowned and appreciated by its reliable products performance and integrated services. Plenty of our products have been exported and applied in oversea markets, such as Australia, South Africa, West Africa, Middle East, Europe, South America, regarding power plant, substation, mineral and ore industries.