10kV indoor epoxy resin cast current transformer specially designed for grid energy metering. Dual windings support 0.2S high-precision metering and protection. Rated output 10-15VA, primary current range 20A to 2000A. Compliant with IEC 61869 and GB/T 20840 standards. Ultra-low partial discharge design ensures metering accuracy. Vacuum epoxy casting process, moisture and salt-spray resistant. Suitable for State Grid metering applications, customizable ratio.
LJZN1-10 is a 10kV indoor epoxy cast current transformer with 0.2S accuracy, ideal for high-precision energy metering in State Grid applications.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869, GB/T 20840 |
| Model Code | LJZN1-10 | Factory nameplate marking |
| Primary Voltage | 10kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | 5A or 1A | Ratio check at rated frequency |
| Accuracy Class | 0.2S metering class | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | 10-15VA | Burden test at rated VA |
| Insulation Type | Dry Epoxy Resin | Dielectric tests per standard |
| Insulation Level (BIL) | [On Request] | Power-frequency & lightning impulse withstand |
| Standards | IEC 61869, GB/T 20840 | Certified to listed standards |
| Frequency | 50/60Hz | Per IEC 61869-1 |
| Environment | Indoor epoxy resin cast | Per datasheet limits |
Ideal For
Not Recommended For
connect primary in series with the line. Secondary terminals: 1S1/1S2 for metering winding, 2S1/2S2 for protection winding. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Follow IEC 61869 terminal markings.
Compliant with: IEC 61869, GB/T 20840
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the accuracy class of LJZN1-10?
A: 0.2S metering class.
Q: What is the primary current range?
A: 20A to 2000A.
Q: What standards does it comply with?
A: IEC 61869 and GB/T 20840.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Voltage class (kV) | Rated primary current (A) | Accuracy classCombined | Rated output (VA) | Rated Secondary thermal limit output (VA) | Rated dynamic current (kA) |
|---|---|---|---|---|---|
| 10, 20 | 20 | 0.2S | 10 | 5 | 2 12.5 |
| 10, 20 | 30 | 0.2S | 10 | 5 | 2 20 |
| 10, 20 | 40 | 0.2S | 10 | 5 | 2 20 |
| 10, 20 | 50 | 0.2S | 10 | 5 | 2 40 |
| 10, 20 | 75 | 0.2S | 10 | 5 | 2 40 |
| 10, 20 | 100-200 | 0.2S | 10 | 5 | 20 65 |
| 10, 20 | 300-500 | 0.2S | 10 | 5 | 25 4 63 |
| 10, 20 | 600-800 | 0.2S | 10 | 5 | 31.5 4 80 |
| 10, 20 | 1000-2000 | 0.2S | 10 | 5 | 40 4 100 |
| 10, 20 | 50 | 0.2S | 15 | 5 | 8 0 |
| 10, 20 | 100 | 0.2S | 15 | 5 | 16 0 |
| 10, 20 | 150-200 | 0.2S | 15 | 5 | 31.5 4 80 |
| 10, 20 | 300-500 | 0.2S | 15 | 5 | 25 4 63 |
| 10, 20 | 600-800 | 0.2S | 15 | 5 | 31.5 4 80 |
Dimension & outline drawing of LJZN1-10 — click image to zoom / view original.
