Specification:

1. Meba Autotransformer SG series High voltage winding is pie winding and has hierarchical structure; low voltage winding is pie winding and has foil structure.

2. The winding are open ventilating, so the windings have a fine the heat radiating performance. Adopt good vacuum-impregnation technique, thus improve the damp-proof performance.

3. The transformer possesses 180 insulation system; C-220-NOMEX paper is adopted as the main insulation layer of transformer; thus the transformer possesses high overload ability.

4. X/R structure is adopted for the parameter design of winding; thus reduce the stroke current when the burst short-circuit happens.

5. The temperature rise of winding adopts 125K temperature rise standard.

Working conditions:

1.Ambient temperature: -15°C~+40°C
2.Altitude: <1000m
3.Relative humidity: <90%
4.Environment exists without gas, steam, chemical deposition, dust or dirt that will affect transformer’s insulation seriously, also explosive or corrosive medium is not allowed.
5.If any special working conditions that are not in line with the above stipulations, user shall negotiate with us.

Type Rated current (A) Voltage combina- tion (kV) Conne-ction
symbol
No-load
Current (%)
Loss (W) Impe-dance
(%)
Noise
(dB)
HV LV No load load
SG10-100 5.77/144.3 6±2.5% 6±5%
10±2.5% 10±5%
10.5±2.5% 10.5±5%
0.4 Yyn0   Dyn11 1.6 410 2165 4 48
SG10-125 7.22/180.4 1.5 480 2590
SG10-160 9.24/230.9 1.4 560 3100
SG10-200 11.6/288.7 1.3 660 3980
SG10-250 14.43/360.8 1.2 760 4675
SG10-315 18.19/454.7 1.1 880 5610 50
SG10-400 23.09/577.4 1.0 1040 6630
SG10-500 28.9/721.7 1.0 1200 7950 52
SGB10-630 36.4/909 0.9 1400 9260
SGB10-630 36.4/909 0.9 1340 9770 6
SGB10-800 46.2/1154.7 0.8 1700 11560 54
SGB10-1000 57.7/1443.4 0.7 1980 13340
SGB10-1250 72.2/1804.3 0.6 2380 15640 55
SGB10-1600 92.4/2309 0.6 2740 18100 56
SGB10-2000 115.5/2886.7 0.6 3320 21250
SGB10-2500 144.3/3608.4 0.5 4000 24730 60

Main technical characters:

1.Input voltage: rated voltage ±10%
2.Output voltage: rated voltage +5% (no load)
3.Efficiency: ≥95%
4.Waveform distortion: no additional waveform distortion
5.Function: indication of input voltage, output voltage and current.
6.Protection: over-current protection
7.Can operate itself without anybody attending for a long term
8.Insulation resistance: ≥50MΩ
9.Electric strength: no breakdown or flashover phenomenon under power frequency sine voltage of 2000V for 1min
10.Overload capability: for 1min under two times of rated current

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