Operation and Maintenace Manual for Our Fluid Filled Transformers
22Pages

SONMEZ TRAFO FLUID FILLED 41410 Gcb/e - KOCAEU - TURKEY info@sonme/trafo<com.lr - www.wnmc/lralo.com.Xr

Unloading and Handling of Transformer 4 INFORMATION ABOUT FLUID FILLED TRANSFORMERS 5 With Conservator Tank (Standard) 6 Hermetically Sealed Transformers 6 Hermetically Sealed Transformers with Corrugated Tank 6 Hermetically Sealed Transformers with Nitrogen Gas 7 Hermetically Sealed Transformers with Rubber Diaphragm 7 Handling and Storage of Mineral Transformer Oil 8 Location and Site Preparation 9 Demounted Conservator Tank 10 Insulating Fluid Levels 11 Insulation Fluid Filling 11 Sampling of Insulating Fluid 11 Draining Insulating Fluid 12

Index PAGE 4.6 Final External Inspection 13 5.1.1 Insulation Resistance (IR) Test 14 5.1.2 Break-Down Voltage (BDV) Test 14 5.1.3 Voltage Ratio Test 14 5.1.4 Winding Resistance Measurement Test 14 5.1.5 Marshalling Box Scheme Check 14 5.1.6 Buchholz Relay Test 14 5.1.7 Temperature Indicator Test 15 5.1.8 Off-Load Tap Changer Check 15 5.2 Sensible Additional Checks 15 5.2.1 Before Switch on. Ensure that: 15 5.3 Placing Into Service 15 6.1.1 Testing of Insulating Fluid 17 6.1.1.1 Sampling of Insulating Fluid 17 6.1.1.2 Testing Dielectric Strength 17 6.1.2 Filtering of Insulating Fluid 17 6.4...

A transformer manufactured by STS, is designed, manufactured and tested with the latest technology and with strict quality control so as to ensure a long and problem free service. I his guide covers general recommendations for the operation and maintenance of liquid filled The successful operation of these transformers is dependent on proper installation, unloading, and maintenance. The conditions under which they operate will determine, to some extent, the frequency with which they should be inspected- A regular program of inspection should be established and rigidly In addition to this...

Each Fluid filled transformer is thoroughly dried out before dispatch. Isolation Fluid, whether in the transformer tank or in separate drums, is thoroughly filtered and tested, when dispatched. Parts that arc liable to be damaged in transit could be removed and could be dispatched in separate cases along with the transformer if necessary (For high powers). Accessories like radiators, bushings, explosion vent, dehydrating breather, Buchholz relays, temperature indicators, pressure relief devices, conservator, etc. will be removed before dispatch(lf necessary, especially for high powers) The...

Skidding or rolling is an alternate method of handling the transformer if a crane is not available. Care must be taken to avoid tipping the transformer. It is preferred to roll the unit along the long axis. Multiple rollers should be used to evenly distribute the weight, The transformer may be pulled from the eyes in The transformer should be jacked at the ends directly below the wall comers. Radiatots. radiator flanges, drain valves, or any other external attachments should not be used for jacking. Four jacks should be used and the transformer should not be tipped from an upright position-...

Some accessories, fillings, components referred in Ibis manual are supplied only when specified and will not be incorporated into all the transformers supplied- Also as efforts are being constantly made to improve designs and service, the equipment supplied may differ in minor details from the data give herein. For this situations please refer to additional documents which given with this manual For information about the equipment actually supplied, always refer to the drawings, technical specification sheet and all other documents furnished with handover documents. Different windings...

3.4.2.2 Hermetically Sealed Transformers with Nitrogen Gas In addition to containing sufficient oil to cover the core and coils, the scaled tank system provides a gas space above the oil. When the oil expands, this serves as a pressure butter. Normal operation causes relatively small pressure variations in this space. 3.4.2.3. Hermetically Sealed Transformers with Rubber Diaphragm Transformer's tank is designed with conservator tank. But there is a rubber diaphragm in this conservator tank. This air bag is installed inside the conservator and fitted to it through the flange connected to the...

3.5.1,1 Handling and Storage of Mineral Transformer Oil Because the sulfur in a natural rubber hose dissolves in oil, causing the dielectric strength to be lowered, metal, glass or oil proof hoses or pipes must be used for handling transformer oil. Dissolved sulfur also deteriorates the conductor in transformer windings. Containers of oil should be stored in a closed room having a constant temperature. If stored outside, they must be protected from the weather Drums should be placed on their sides with their bungs down and tightly closed. Unless tests are required, drums or other containers...

4.1 Location and Site Preparation Installation location of a transformer must be considered carefully* Transformers, as is the case with most electrical equipment, generate a substantial amount of heat during operation. This heat must be removed in order to allow the transformer to maintain its designed maximum temperature limits. If a transformer is located outdoors the heat will be removed by natural convection cooling unless the radiator air flow is restricted by surrounding objects. There must be at least 60 cm space between all No special installation is necessary to install a...

Transformers, with equipment or accessories removed for shipment, must be reassembled after being placed on the installation site. All items removed for shipment will be noted on the Bill of Lading or on the Packing list. These items should be reassembled in the following order: A. Inspect all radiator panels and flange mating surfaces for shipping damage. B. Check that all valves on tank flanges are closed and remove blank shipping plates. C. Remove blank shipping plates on radiator flanges and inspect for moisture or contamination inside radiator headers. If the radiators are...