Product Application
This product is a large-capacity three-phase five-column voltage transformer designed based on the standardized parameters of the State Grid. It adopts the 4PT anti-ferromagnetic resonance principle. When the system has
grounding faults of varying degrees, no resonance will occur, and it can run for a long time. The primary terminal is used in conjunction with the American 200A large-diameter shaft type, and a special fuse is installed in the plug. It meets the requirements of the Southern Power Grid that the short-circuit impedance is less than 15% when the power winding outputs 3000VA. It is suitable for indoor AC 50 or 60Hz, rated voltage 10kV power system as a 220V power supply and voltage measurement and zero-sequence protection.
Implementation Standards
GB20840.3-2013
Conditions of Use
● Ambient temperature between -40℃ and 70℃, with a daily average temperature not exceeding 35℃.
● No significant dust, smoke, corrosive gases, steam, or salt contamination.
● Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%.
● Altitude not exceeding 1000 meters.
Wiring Diagram
Technical Parameters Table
| Model | Rated Voltage Ratio (kV) | Accuracy Class and Accuracy Class Combination | Rated Secondary Output (VA) | Thermal Limit Output (VA) | Rated Insulation Level (kV) | Remarks |
| JSZW12A-10R2 | 10/0.22 /0.1 | 3/3P | 3×1000/100 | 3×1200 | 12/42/75 | 220V is the power supply, short-circuit impedance is less than 15% at 3000VA; |
| JSZW(F)12A-10R2 | 10/0.1/0.22 /0.1 | 0.5/3/3P | 3×30/3×1000/100 | 3×200/3×1200 | 12/42/75 |
External Dimensions Diagram
Keywords
Three-phase five-column anti-resonance voltage transformer for ring main unit
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Category
Product Application
This product is a large-capacity three-phase five-column voltage transformer designed based on the standardized parameters of the State Grid. It adopts the 4PT anti-ferromagnetic resonance principle. When the system has
grounding faults of varying degrees, no resonance will occur, and it can run for a long time. The primary terminal is used in conjunction with the American 200A large-diameter shaft type, and a special fuse is installed in the plug. It meets the requirements of the Southern Power Grid that the short-circuit impedance is less than 15% when the power winding outputs 3000VA. It is suitable for indoor AC 50 or 60Hz, rated voltage 10kV power system as a 220V power supply and voltage measurement and zero-sequence protection.
Implementation Standards
GB20840.3-2013
Conditions of Use
● Ambient temperature between -40℃ and 70℃, with a daily average temperature not exceeding 35℃.
● No significant dust, smoke, corrosive gases, steam, or salt contamination.
● Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%.
● Altitude not exceeding 1000 meters.
Wiring Diagram
Technical Parameters Table
| Model | Rated Voltage Ratio (kV) | Accuracy Class and Accuracy Class Combination | Rated Secondary Output (VA) | Thermal Limit Output (VA) | Rated Insulation Level (kV) | Remarks |
| JSZW12A-10R2 | 10/0.22 /0.1 | 3/3P | 3×1000/100 | 3×1200 | 12/42/75 | 220V is the power supply, short-circuit impedance is less than 15% at 3000VA; |
| JSZW(F)12A-10R2 | 10/0.1/0.22 /0.1 | 0.5/3/3P | 3×30/3×1000/100 | 3×200/3×1200 | 12/42/75 |
External Dimensions Diagram
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