1.1 SINGLE- AND THREE PHASE OIL-IMMERSED AUTOTRANSFORMERS FOR COUPLING OF NETWORKS 110, 220, 330, 500 and 750 kV (OFAF cooling system)


Type

Rated capacity, MVA Rated voltages, kV Type, range and number of voltage regulation steps
auto-transformer LV windings HV MV LV
АОДЦТ-417000/750/500-У1 417 6 750/√3 500/√3 10,5 NLTC in common neutral from -4,8% to +4,0%, ±1 steps
АОДЦТН-167000/500/330-У1 167 33 500/√3 330/√3 10,5; 38,5 OLTC in line of MV
±12%, ± 8 steps
АОДЦТН-167000/500/220-У1 167 50 500/√3 230/√3 10,5; 11, 0; 38,5 OLTC in line of MV
±12%, ± 6 steps
6 10,5; 11,0
АТДЦТН-250000/500/110-У1


250


100


500


121


10,5; 38,61

OLTC in neutral of HV from -11,8% to +11,0%,
± 8 steps

АОДЦТН-

267000/500/220-У1

267 67 500/√3 230/√3 10,5; 38,5 OLTC in line of MV
±12%, ± 8 steps
АОДЦТН-267000/500/220-УХЛ1 267 83 500/√3 230/√3 15,54 OLTC in line of MV
±11,2%, ± 8 steps
АТДЦТН-500000/500/220-У1 500 125 500 230 10,42 OLTC in neutral of HV from -11,2% to +9,4%,
± 8 steps
АТДЦТН-125000/330/110-У1 125 63 330 115 6,3; 6,6; 10,5;
11,0; 38,5
OLTC in line of MV
±12%, ± 6 steps
50 10,5
АОДЦТН-133000/330/220-У1 133 33 330/√3 230/√3 10,5; 38,5 OLTC in line of MV
±12%, ± 6 steps
АТДЦТН-200000/330/110-У1 200 20 330 115 10,5 OLTC in line of MV
±12%, ± 6 steps
80 6,3; 6,6; 10,5;
11,0; 38,5
АТДЦТН-125000/220/110-У1 125 63 230 121 6,3; 6,6; 10,5;
11,0; 38,5
OLTC in line of MV
±12%, ± 6 steps
АОДЦТ-138000/220/110-У1 138 69 242/√3 121/√3 13,8
АТДЦТН-200000/220/110-У1 200 80 230 121 6,3; 6,6; 38,5 OLTC in line of MV
±12%, ± 6 steps
100 10,5; 11,0
АТДЦТН-250000/220/110-У1 250 100 230 121 10,5; 27,5; 38,5 OLTC in line of MV
±12%, ± 6 steps
125 10,5; 11,0
АТДЦТН-63000/220/110-У1 63 32 230 121 6,3; 10,5; 11,0;
38,5
OLTC in line of MV
±12%, ± 8 steps