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China ZGS11-12 Combined American Prefabricated Substation - Quality from Leading Suppliers and Factory
Model meaning
Conditions of Use
◇Altitude not exceeding 1000m;
◇Ambient temperature: -35℃~+40℃;
◇Relative humidity: daily average value is not more than 95%, monthly average value is not more than 90%;
◇Installation location: A well-ventilated place without fire or explosion hazards, chemical corrosive gases, and a ground inclination of no more than 3°.
Technical Parameters
| NO. | Name | Unit | Technical Parameters |
|---|---|---|---|
| 1 | Rated voltage | KV | 10/0.4 (high pressure/low pressure) |
| 2 | Maximum operating voltage | KV | 12 (high voltage side) |
| 3 | Rated frequency | HZ | 50 |
| 4 | Rated capacity | KVA | 50-1600 |
| 5 | 1 minute power frequency withstand voltage | KV | 35 |
| 6 | Lightning impulse voltage | KV | 75 |
| 7 | Cooling method | - | Oil-immersed self-cooling |
| 8 | High voltage backup fuse breaking current | KA | 50 |
| 9 | Plug-in fuse breaking current | KA | 25 |
| 10 | Ambient temperature | ℃ | -35~+40 |
| 11 | Coil allowable temperature rise | ℃ | 65 |
| 12 | No-load voltage regulation | ℃ | ±5% or ±2×2.5% |
| 13 | Noise Level | dB | 50 |
| 14 | Protection level | - | IP43 |
Installation Dimensions
Ordering Instructions
◇Product operation location and special requirements;
◇Provide product ordering drawings, which should include wiring diagrams, and should indicate transformer capacity, main component models and specifications, power distribution branch circuits and capacity;
◇When electric energy metering and reactive power automatic compensation devices are required, the configuration requirements of the metering electric energy meter and mutual inductor shall be provided, and the capacity of the compensation capacitor shall be indicated;
◇Indicate the requirements for product surface treatment;
◇When ordering combined transformers, please specify terminal type or ring network type.
Examples of some product appearance drawings
Frequently Asked Questions (FAQ)
What is the rated capacity range of this transformer?
The rated capacity of the unit ranges from 50 kVA up to 1600 kVA to accommodate diverse power distribution requirements.
What environmental conditions are suitable for installation?
The product operates efficiently at altitudes not exceeding 1000m, within ambient temperatures between -35℃ and +40℃, and relative humidity up to 95% (daily average). It requires a well-ventilated site with a ground inclination under 3°.
What cooling method and protection level are standard?
This transformer utilizes oil-immersed self-cooling technology and features an IP43 protection rating for reliable outdoor/indoor operation.
What are the rated voltage parameters?
The transformer operates with a rated voltage of 10/0.4 kV (high/low pressure) and has a maximum operating voltage of 12 kV on the high voltage side at 50 Hz.
What key information must be specified when placing an order?
Orders should specify the installation site conditions, wiring/drawings, capacity, component models, surface treatment specifications, and whether terminal type or ring network type configuration is required.
What is the operating noise level and allowable temperature rise?
The unit operates with a low noise level of 50 dB and has an allowable coil temperature rise of 65℃ under standard operating conditions.

