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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.

Technical Parameters
Product Advantages
External Dimensions of the Product
Features
Environment for Use

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 (%)
Rated Capacity (kVA)	High-voltage (kV)	Tapping %	Low-voltage (kV)	Connection Unit Symbol	No-load Loss (kW)	Load Loss (kW)	Short-circuit Impedance (%)	No-load Current (%)
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
Rated Capacity (kVA)	Machine Weight	Oil Weight	Total Weight	L×W×H	High-voltage Wiring Mode
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.