Performance data and guarantee of three-phase transformer
Manufacturer name and country of origin: S.P. Electric Industry co,. ltd. THAILAND
Trade Mark: "FL Full Light"
Type of model: Oil immersed, natural self cool
Aplied Standard: TIS 384 (Thailand), IEC, VDE and DIN Standard

Rated power: 50 kVA
Rated frequency: 50 Hz
Rated primary voltage: V line= 33000 V
Rated secondary voltage: V line= 400 V V phase= 231 V
Connection symbol: Dyn11
Type of oil preservation system: Permanantly sealed without gas-cushion
Operation duty : continuous operation(Type DB): Yes
Max. temperature rise of winding, at full load: 65.0 K
Max. temperature rise of top oil, at full load: 60.0 K
Primary tapping : off-circuit condition: yes
Number of steps of primary tapping: 4.0 Steps
Percent of rated voltage of each tapping: +/ - 2x2.5%
Short-circuit impedance at 75 celsius&Tolerance: 4.0 +/- 10 %

Losses, for each transformer unit
No-load loss plus positive tolerance: 170 W
Load loss, plus positive tolerance, at 75 celsius: 950 W

Efficiency in %, 85 celsius and at load :
1/2 of rated power and P.F.=1.0 : 98 %
1 of rated power and P.F.=1.0 : 97.8 %
Voltage regulation at P.F.=1.0 : 2.1 %
Method of cooling: ONAN
Colour of tank : grey Yes
Quantity of oil filling: 182 liter
Mass of core: 153 kg
Mass of winding: 64 kg
Mass of the part liftable from tank: 318 kg
Mass of complete transformer with oil: 538 kg
Dimensions of transformer
Overall height: 1,215 mm
Overall width: 918 mm
Overall depth: 550 mm
Height over cover: 550 mm