RFQ Description
1 Unit - POWER TRANSFORMER, 20MVA / 25MVA, 3 Phase, Oil Immersed, 60 Hz Conservator Tank Type, Outdoor Type, Cooling O.A./FA, Built and Tested in Accordance with *****57.12.00 or ***** Equivalent, With Standard Accessories, Brand New, Asian Made On-Load Tap Changer.SPECIFICATION:I. RATING: Class O.A./FA 20, 000KVA / 25, 000KVAType: Two winding, Oil ImmersedPhase: Three (3)Frequency: 60HzHigh Voltage Winding: 67, 000 + 6 x 1.25% V, DeltaLow Voltage Winding: 13, 200 Y/7, 620 V, with neutral brought out through bushingTemperature Rise: 65C II. BASIC IMPULSE LEVEL High Voltage: 350, 000 VoltsLow Voltage: 110, 000 Volts III. DIELECTRIC TEST 1. APPLIED VOLTAGE (TO OTHER WINDING AND GROUND)High Voltage Winding: 140, 000 VoltsLow Voltage Winding: 34, 000 Volts 2. INDUCED VOLTAGETime Normal Voltage 140, 000 Volts (two times)IV. LOSSES TEST 1. LOSSESNo Load: 16 KW (max)Total at 100% Load, 100 PF: 101 KW (max)75C for 55C rise (Excluded Auxiliary Power for 4 units FanLow Voltage Winding: 34, 000 Volts 2. PERCENT IMPEDANCE AT RATED CAPACITY75C: 5% - 7%3. ACTUAL TEMPERATURE RISE AT RATED LOADWinding Rise: 65COil: 55CHottest Spot: 78C 4. PERCENT REGULATION ATUnity Power Factor: 0.46%0.8 Power factor: 4.7% 5. GUARANTEED CORE LOSSAll Rated Voltage and Frequency: 16 KW6. GUARANTEED COPPER LOSS AT RATED VOLTAGE AND RATED FREQUENCY75C 0.8 Power Factor: 85 7. AUDIBLE SOUND LEVEL: 70dBA, O.A. (or below) Please send your proposal to;EDUARDO Toto H. DELA TORRE, REESales ManagerMeralco Industrial Engineering Services Corp.MIESCOR -Trading Department5/F Renaissance Towers 1000, Meralco AvenueOrtigas Center, Pasig City, Philippines 1600Tel: 632-635-5901 to 10 (local 327)Direct Line: 632-632-1208Fax: 632-633-3890***** transformer, power transformer, 20000 kva electrical equipments, transformers, power cables, load break switches, surge arresters, pole line hardware
