Oil-immersed Hermetically-sealed Transformers

The Hermetically-sealed transformer is the transformer of which inner tank is totally isolated from the outside atmosphere. Its volume changes with shrinkage and expansion of the corrugated tank sides. Moisture and oxygen can not enter the tank  from  outside,thus  slowing  down  the  aging  of  the insulating  material  It  doesn't  need  core-lifting  check  before operation or maintenance after putting into operation,which greatly improves the reliability of transformer.
It adopts PCCAD as its design software,and meets IEC60076.GB1094 standard,and has passed the IS09001 quality system certification.The  coil,wound by  high  intensify  enameled  wire  (or  paper  wrapped) with cylinder  (or  disc) structure  and Ampere-Turn balance,reasonable insulation structure have a good short circuit withstand capacity. The fastening parts are knockouts.Even after long-distance transportation,they are not loose.All sealing material is made of high quality acrylic rubbery which can effectively prevent against light-aging,electricity aging and heat aging.It is equipped with"remote sensor"signal thermometer and pressure relief valves to enhance the reliability of transformers.

 

Without such device like conservator and air breather,it ensures that the transformer oil is not in contact with air.So commonly,the transformers can be used continuously for 20 years without any particular treatment.
Excellent rubber is adopted in the sealing parts.
Vacuum oil-filling process is used.

 

It can be widely used in urban power network as well as petrochemical,metallurgical,textile and humid, inaccessible enterprises,and mining.
S9-M Series Three-phase Double-winding Distribution Transformers with Off-circuit Tap Changer

S11-M SERIES THREE-PHASE DOUBLE-WINDING DISTRIBUTION TRANSFORMERS WITH OFF-CIRCUIT TAP CHANGER

Note:For transformers with the capacity of 500kVA and below,values of load loss above the slash of the table apply lo Dyn0 connection,and values of load loss below the slash apply to Yyn0 connection.

 

The Technical Specifications of this Oil Immersed Hermetically Sealed Transformer define its electrical and mechanical parameters for reliable distribution network applications. The S9-M Sealed Oil Transformer model features a hermetically sealed tank design that is totally isolated from the outside atmosphere, with volume changes accommodated by shrinkage and expansion of the corrugated tank sides. This Hermetically Sealed Distribution Transformer prevents moisture and oxygen from entering the tank from outside, significantly slowing down the aging of the insulating material. The Oil Immersed Hermetically Sealed Transformer does not require core-lifting check before operation. The S9-M Sealed Oil Transformer series adopt PCCAD design software and meet IEC60076 standards. The coil construction of this Oil Immersed Hermetically Sealed Transformer features high-strength enameled wire, providing excellent short circuit withstand capacity. This Hermetically Sealed Distribution Transformer uses high-quality acrylic rubber sealing material. Each S9-M Sealed Oil Transformer undergoes routine testing to verify compliance. Proper installation of this Oil Immersed Hermetically Sealed Transformer as a Hermetically Sealed Distribution Transformer ensures long-term reliability. The S9-M Sealed Oil Transformer is an ideal choice for urban distribution networks.