CATALOGUE

36 kV insulation class
Technical information (250-3000 kVA)
TECHNICAL DATA from 250 to 3000 kVA
kVA Item Prim V Sec V Uk% Po (W) Pk(W) Io% Sound Sound Weight
pressure level power level
kV V 120° 75° dB dB kg
250 EE5NAIBA 25 400 6 1320 3600 3180 1.5 55 68 1380
315 EF5NAIBA 25 400 6 1450 4800 4250 1.4 56 69 1500
400 EG5NAIBA 25 400 6 1600 5800 5100 1.3 57 70 1700
500 EH5NAIBA 25 400 6 1800 7200 6350 1.2 58 71 1900
630 EI5NAIBA 25 400 6 2100 7600 6750 1 59 73 2250
800 EJ5NAIBA 25 400 6 2580 9400 8370 0.9 60 74 2700
1000 EK5NAIBA 25 400 7 2800 10500 9280 0.8 61 75 3100
1250 EL5NAIBA 25 400 8 3000 14000 12350 0.7 62 76 3400
1600 EM5NAIBA 25 400 8 3600 16500 14600 0.6 64 77 4050
2000 EN5NAIBA 25 400 8 4600 18000 16200 0.5 65 79 4900
2500 EO5NAIBA 25 400 8 5780 22000 19800 0.5 67 80 6000
3000 EP5NAIBA 25 400 8 6620 25500 22500 0.4 68 82 7000
Standards CEI 14-4 and 14-8 - IEC 60076-11 - CENELEC HD 538.1
Power (kVA) 250 to 3000
Frequency (Hz) 50
Primary Voltages (kV) 25 - 33 insulation class 36 kV BIL 145/170 kV
Secondary Voltages (V) 400 - 420 insulation class 1.1 kV
Adjustment, MV side ± 2 x 2.5%
Vectorial group
Dyn11 (replace the final letter of the item code with “B” for Dyn5 or “C” for Dyn1)
Insulating system insulation class F / F
Temperature rise
100 / 100 K
Class E2 - C2 - F1 Certified CESI No. 98/11 908
Tolerances
According to CEI / IEC
Notes
The values shown are referred to the ratio 25/0.4 kV.
These values may slightly change when there are different combinations.
dB = Value measured at a distance of one metre, according to standard CEI EN 60076-10
Dimensions and weight of integral boxes: page 131
BIL 170 available on request in the order phase
128 EdM - CAST RESIN TRANSFORMERS