ZGS11-Z Combined Transformer
The ZGS11 Series Combined Transformer (also known as American Cabinet-type Transformer Substation) is a type of transformer that installed with a high-voltage load switch, a plug-in type fuse and a high-voltage current-limiting fuse in the transformer tank, and uses mineral oil for insulation and cooling. It has the advantages of reasonable and compact structure, small volume, flexible installation, convenient operation, small floor area, etc. It is applicable for the load center of urban power grid, so as to reduce loss and improve power supply quality.
Model Description:
Technical Parameters:
Rated
Capacity
(kVA)
Voltage Combination
Connection
Unit
Symbol
No-load
Loss (kW)
Load Loss (kW)
Short-circuit
Impedance (%)
No-load
Current (%)
High-voltage
(kV)
Tapping %
Low-voltage
(kV)
200
10
±2×2.5
0.4
Yyn0 or Dyn11
335
2600
4
0.6
250
390
3050
0.5
315
465
3650
0.45
400
560
4300
0.4
500
670
5100
0.4
630
840
6200
4.5
0.4
800
980
7500
0.4
1000
1190
10300
0.4
Due to the simplified structure, the floor area and size of the American Cabinet-type Substation are greatly reduced. Due to its small size and only one door for opening, the floor area occupied is only 1/4 of that of the European Cabinet-type Transformer Substation, and the size is only 1/5 to 1/3 of that of the European Cabinet-type Transformer Substation of the same capacity.
Secondly, the protection mode is simple: fuse protection is adopted at the high voltage side of the American Cabinet-type Transformer Substation; the molded case automatic air circuit breaker protection is adopted at the low voltage side, which is the same with the 10kV distribution transformer protection mode in China. The high-voltage fuse protects internal failure of the transformer, and the automatic air circuit breaker protects overcurrent, short circuit and undervoltage failures at the low voltage side.
Rated
Capacity (kVA)
Weight (kg)
External Dimensions (mm)
High-voltage
Wiring Mode
Machine Weight
Oil Weight
Total Weight
L×W×H
200
601
733
1894
1865×1240×1735
Loop-network type (H) or terminal type (Z)
250
716
749
2060
1865×1280×1735
315
835
733
2148
1865×1730×1735
400
1006
729
2375
1865×1440×1805
500
1156
747
2603
1865×1450×1805
630
1295
757
2826
1865×1450×1860
800
1521
872
3357
1865×1495×1860
1000
1634
970
3704
1865×1510×1860
1. Small size, compact structure and convenient installation.
2. Fully-sealed and fully-insulated structure, which can guarantee personnel safety;
3. It can be used for the ring network as well as the terminal. Conversion is convenient, and the reliability of power supply is improved.
4. Low loss, low noise and superior performance.
5. The cable joint adopts a plug-in type, which has the features of the isolating switch, convenient and flexible operation.
6. High-voltage double-fuse protection. The plug type fuse has temperature and current double sensitive protection feature.
7. The backup fuse protects transformer failure and secondary line failure.
8. Anti-theft structure and strong overload capacity.
9. Temperature rises slowly.
10. The transformer has a special structure, and the outstanding advantages are high voltage quality and small neutral point offset.
1. The elevation shall not exceed 1,000m;
2. Ambient temperature: 25℃ to 40℃ (104°F to 77°F)
3. Relative Humidity: the daily average value shall not be more than 95%, and the monthly average value shall not be larger than 90%;
4. Outdoor Wind Speed: less than 35m/s;
5. Vertical Inclination: not exceeding 3°;
6. Installation site: places free of explosion hazard, fire, serious dirtiness, chemical corrosion and violent vibration.
Note: when the use conditions exceed the above scope, user shall determine the allowed range and technical measures through negotiations with our company.
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