Product Application
LJZN2-10 current transformer is an indoor epoxy resin cast pillar type full-duty product. It is used for electric energy measurement in power systems with a rated frequency of 50Hz and a rated voltage of 10kV and below. It is installed in a center-mounted switchgear or other types of switchgear.
Implementation Standards
GB/T20840.2-2014
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.
Technical Parameters
● Rated insulation level: 12/42/75kV
● Rated secondary current: 5A or 1A
● Power factor of the load: cosΦ=0.8 (lagging)
● Surface creepage distance: Meets Class II pollution level requirements
● State Grid Standard: Q/GDW10572.2-2023
● Instrument safety factor: FS ≤ 5
Technical Parameter Table
Rated Secondary Current: 5A, 1A
| Rated Primary Current (A) | Rated Short-Time Thermal Current (kA RMS) | Rated Dynamic Stability Current (kA Peak) | Accuracy Class | Rated Secondary Output (VA) | Surface Creepage Distance (mm) | Weight (kg) |
| 20 | 5/2S | 12.5 | 0.2S 0.5S | 15 | 245 | 22 |
| 30 | 8/2S | 20 | ||||
| 40 | 8/2S | 20 | ||||
| 50 | 10/2S | 25 | ||||
| 60 | 10/2S | 25 | ||||
| 75 | 16/2S | 40 | ||||
| 100 | 20/2S | 50 | ||||
| 150 | 20/2S | 50 | ||||
| 200 | 20/2S | 50 | ||||
| 300 | 25/4S | 63 | ||||
| 400 | 25/4S | 63 | ||||
| 500 | 25/4S | 63 | ||||
| 600 | 31.5/4S | 80 | ||||
| 750 | 31.5/4S | 80 | ||||
| 1000 | 40/4S | 100 | ||||
| 1250 | 40/4S | 100 | ||||
| 1500 | 40/4S | 100 | ||||
| 2000 | 40/4S | 100 |
Dimensional Drawing
Keywords
current transformer for measurement
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Category
Product Application
LJZN2-10 current transformer is an indoor epoxy resin cast pillar type full-duty product. It is used for electric energy measurement in power systems with a rated frequency of 50Hz and a rated voltage of 10kV and below. It is installed in a center-mounted switchgear or other types of switchgear.
Implementation Standards
GB/T20840.2-2014
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.
Technical Parameters
● Rated insulation level: 12/42/75kV
● Rated secondary current: 5A or 1A
● Power factor of the load: cosΦ=0.8 (lagging)
● Surface creepage distance: Meets Class II pollution level requirements
● State Grid Standard: Q/GDW10572.2-2023
● Instrument safety factor: FS ≤ 5
Technical Parameter Table
Rated Secondary Current: 5A, 1A
| Rated Primary Current (A) | Rated Short-Time Thermal Current (kA RMS) | Rated Dynamic Stability Current (kA Peak) | Accuracy Class | Rated Secondary Output (VA) | Surface Creepage Distance (mm) | Weight (kg) |
| 20 | 5/2S | 12.5 | 0.2S 0.5S | 15 | 245 | 22 |
| 30 | 8/2S | 20 | ||||
| 40 | 8/2S | 20 | ||||
| 50 | 10/2S | 25 | ||||
| 60 | 10/2S | 25 | ||||
| 75 | 16/2S | 40 | ||||
| 100 | 20/2S | 50 | ||||
| 150 | 20/2S | 50 | ||||
| 200 | 20/2S | 50 | ||||
| 300 | 25/4S | 63 | ||||
| 400 | 25/4S | 63 | ||||
| 500 | 25/4S | 63 | ||||
| 600 | 31.5/4S | 80 | ||||
| 750 | 31.5/4S | 80 | ||||
| 1000 | 40/4S | 100 | ||||
| 1250 | 40/4S | 100 | ||||
| 1500 | 40/4S | 100 | ||||
| 2000 | 40/4S | 100 |
Dimensional Drawing
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0411-83167110
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