FEMOD manufactures several types of oil coolers for energetic and distributive transformers, using water or air as cooling fluid, with power range from 50 KW up to 700KW, of forced and natural flow. Types of exchangers are: OFAF, OFWF or ONWF. (OF - oil forced; AF - air forced; ON – oil natural; WF – water forced)
All types of coolers can be made according to buyer’s plans and documentation, samples or personal projects based on comprehensive projects.
Air coolers OFAF are manufactured as standard, serial product in several different sizes and out of high-finned copper tubes in chess-like layout. Fins are made of aluminium and fin-type defined in accordance with working conditions (see catalogue of finned tubes).
Dimension of the exchangers are defined in accordance with requested heating capacity, storage and buyer’s special demands.
The same or at least resembling structure is used for cooling stator windings of generator in hydroelectric power plants.
With 2 fans
With 3 fans
“ABS MINEL TRANSFORMATORI” - Ripanj
Transformer 150 MVA, EMS - TS Jajinci
Transformer 400 MVA, EMS - TS Obrenovac
| Type of cooler OFAF | Cooling power kW | SIZES | Total weight kg | Fan unit | Outside connections | Noise dB | ||||
| A mm |
B mm |
C mm |
D mm |
Number | Power kW | |||||
| HTU 175 | 175 | 2600 | 894 | 742 | 314 | 1250 | 2 | 1.1 | PM16, DN125 | 75 |
| HTU 225 | 225 | 3554 | 785 | 808 | 278 | 1400 | 2 | 1.1 | PM16, DN125 | 75 |
| HTU 300 | 300 | 3554 | 815 | 980 | 305 | 1600 | 3 | 1.1 | PM16, DN125 | 80 |
| HTU 380 | 380 | 3554 | 890 | 980 | 340 | 1800 | 3 | 1.1 | PM16, DN125 | 80 |
| HTU 400 | 400 | 3554 | 890 | 980 | 340 | 1900 | 3 | 1.1 | PM16, DN125 | 80 |
Oil-water coolers (OFWF, ONWF) are made upon buyer’s request with all technical para- meters defined (required exchange power, flows, pre- ssures, input and output temperatures of water and oil, built-in-sizes, dimensions and connection type for fluids, etc.). OFWF cooler of 250 KW for transformer 112 MVA in HPP (Hydro Power Plant) Bajina Basta on Perucac lake (picture right).
