Rockwill Electric Group
33kV 11kV oil immersed power transformer
Low loss Oil immersed type distribution transformer 1.Application 3.3kV-36kV transfo ...

Detailed description

  • Description
  • 15kV up to 36kV Series
  • 33kV series
  • 35kV series

Low loss Oil immersed type distribution transformer

1.Application

3.3kV-36kV transformers are mainly made of iron core and windings which are placed in the oil tank that filled with insulating oil.

It is mainly used for power plant, power transmission and distribution station as the equipment of power transmission.

2.Type and Rating

Product types: Single phase or three phases

Two windings or three windings

On-load or no-load voltage tap changer,

Autotransformer,

Natural cooling forced cooling or oil cooling, etc.

.Capacity range: 50kVA-5000kVA

.Frequency; 50/60Hz

3.Standard

IEC 60076-1:2000, IEC 60076-2:1993, IEC 60076-3:2000, IEC 60076-5:2006, IEC 60137:2003; ANSI, IEEE, AS, etc

 

11kV Series

Capacity (kVA) Voltage Combination Vector group No-load loss (W) Load loss (W) (75°C) Impedance voltage (%)   No-load current (%)
HV Tapping range of HV LV
25 6 kV 6.6Kv 10.5kV 11kV   ±5%,±2×2.5%   0.38 kV 0.4 kV 0.415 kV 0.48 kV   Yyn0 Dyn5 Dyn11 100 600 4.0 1.7
50 130 870 1.6
63 150 1040 1.5
80 180 1250 1.4
100 200 1500 1.3
125 240 1800 1.2
160 280 2200 1.1
200 340 2600 1
250 400 3050 0.9
315 480 3650 0.9
400 570 4300 0.8
500 680 5100 0.8
630 810 6200 4.5 0.7
800 980 7500 0.6
1000 1160 10300 0.55
1250 1360 12000 0.5
1600 1640 14500 0.45
2000 1940 18500 5.5 0.4
2500 2300 20500 0.4
Capacity (kVA) Voltage Combination Vector group No-load loss (W) Load loss (W) (75°C) Impedance voltage (%)   No-load current (%)
HV Tapping range of HV LV
630 13.2kV 13.8kV 15 kV 20 kV 22 kV 33 kV 34.5 kV   ±5%,±2×2.5%   0.38 kV 0.4 kV 0.415 kV 0.48 kV     Yd11 1150 6200 4.5 0.9
800 1400 7500 5.5 0.8
1000 1650 10300 0.7
1250 1950 12800 0.6
1600 2300 14500 0.6
2000 2650 17100 0.6
2500 3100 20000 0.6
3150 3650 23700 0.5
4000 4450 28100 0.5
5000 5200 32700 0.5
6300 6150 36900 0.5
8000 8900 44000 0.4
10000 11600 50600 6.5 0.4
Capacity (kVA)
Voltage
Vector group
No-load loss (W)
Load loss (W)
(75°C)
Impedance voltage (%)
No-load current (%)
Primary
Tapping range (%)
Secondary
50
33 kV
±5%
 
0.38 kV
0.4 kV
0.415 kV
0.48 kV
 
 
Yyn0
6.5
1210
6.5
2.0
100
305
2020
1.80
125
340
2380
1.75
160
360
2830
1.65
200
430
3300
1.55
250
510
3950
1.40
315
610
4750
1.40
400
735
5750
1.30
500
870
6900
1.30
630
1040
8250
1.25
800
1250
9900
1.05
1000
1480
12150
1.00
1250
1760
14600
0.90
1600
2130
17500
0.85
2000
2500
20680
0.75
2500
2975
24500
0.75
 
Capacity (kVA) Voltage Vector group No-load loss (W) Load loss (W) (75°C) Impedance voltage (%) No-load current (%)
Primary Tapping range (%) Secondary
50 33 kV ±5%   0.38 kV 0.4 kV 0.415 kV 0.48 kV     Yyn0 6.5 1210 6.5 2.0
100 305 2020 1.80
125 340 2380 1.75
160 360 2830 1.65
200 430 3300 1.55
250 510 3950 1.40
315 610 4750 1.40
400 735 5750 1.30
500 870 6900 1.30
630 1040 8250 1.25
800 1250 9900 1.05
1000 1480 12150 1.00
1250 1760 14600 0.90
1600 2130 17500 0.85
2000 2500 20680 0.75
2500 2975 24500 0.75

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