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ZGS11-ZF Series Combined Transformer for Power
The combined transformer for wind (solar) power generation is a stationary transformer equipment which integrates the booster transformer body, switchgear, high-voltage current-limiting fuse, tap switch and corresponding auxiliary equipment. For the particularity of wind (solar) power generation, to provide users with reasonable solutions, it is an ideal supporting step-up transformer for wind (solar) generator sets.
1. Voltage
System voltage: 35kV(36.75kV, 38.5kV)
Maximum operating voltage at the high voltage side: 40.5kV
Rated voltage at the low voltage side: 0.69kV
2. Rated Frequency: 50Hz
3. Rated Insulation Level
Industrial frequency withstand voltage of the high-voltage switch: 95kV
Industrial frequency withstand voltage of the transformer body 85kV
Impulse withstand voltage peak value: 200kV
Industrial frequency withstand voltage at the industrial frequency withstand voltage of the transformer: 5kV
4. Number of Phases: three-phase
5. Cabinet Protection Level: oil tank IP68, high and low-voltage chamber IP54, after the high-voltage chamber door is opened IP3X
Transformer Capacity (kVA)
High-voltage Combination and Tapping Range
Connection
Group Grade
No-load Loss kW
Load Loss kW
Impedance %
High-voltage V
Tapping Range %
Low-voltage kV
1600
35
36.75
38.5±2×2.5
0.69
Dyn11
According to customers’ requirements
According to customers’ requirements
6.5
2150
2280
It has the advantages of strong completeness, easy installation, short construction cycle, low operating expense, high structure strength, and high anti-corrosion performance, etc.
Character '罒' Structure
Capacity (kVA)
L (mm)
W (mm)
H (mm)
1600
3450
2450
2150
2150
3500
2500
2200
2280
3550
2550
2250
Character '品' Structure
Capacity (kVA)
L (mm)
W (mm)
H (mm)
1600
3350
2750
2150
2150
3400
2800
2200
2280
3450
2850
2250
1. The elevation shall not exceed 1,000m;
2. Ambient Temperature: Maximum air temperature of 45℃/113℉
Minimum air temperature of -25℃/-13℉
3. Relative Humidity: daily relative humidity shall not exceed 95%, and the monthly average shall not exceed 90%;
4. The outdoor wind speed shall not exceed 35m/s;
5. The ground inclination shall not exceed 3°;
6. The waveform of the supply voltage is similar to sine wave, and the three-phase supply voltage is approximately symmetrical;
7. Places free of explosion hazard, fire, serious dirtiness, chemical corrosion and violent vibration.
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