Waterproof zero sequence current transformer, model LXK-Φ120TH. Excellent waterproof performance for humid indoor environments. Rated up to 35kV, 50/60Hz. Split design with waterproof sealing ring, hot-line installation. TH tropicalized design, compliant with IEC 61869 standards. Used for three-phase cable ground fault protection.
Split-core zero sequence CT for earth fault protection, rated up to 35kV, with waterproof and tropicalized design for humid indoor environments.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869, GB/T 20840 |
| Model Code | LXK-120TH | Factory nameplate marking |
| Primary Voltage | Up to 35kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | [On Request] | Ratio check at rated frequency |
| Accuracy Class | [On Request] | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | [On Request] | 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 | [On Request] | Per datasheet limits |
Ideal For
Not Recommended For
secondary terminals 1S1/1S2. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Connect the secondary to a protective relay or earth fault detection device. Ensure the primary cable passes through the center and the split core is properly closed and sealed.
Compliant with: IEC 61869, GB/T 20840
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the maximum system voltage for this CT?
A: Up to 35kV.
Q: Can it be installed without de-energizing the cable?
A: Yes, it is a split-core design with hot-line installation capability.
Q: Is it suitable for outdoor use?
A: It is designed for humid indoor environments; outdoor use is not specified.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Model | Rated primary current (A) | Accuracy class | Rated output (VA) |
|---|---|---|---|
| LXK-Φ120TH | 50-75/1 | 10P10 | 1.5 |
| LXK-Φ120TH | 100/1 | 10P10 | 3.75 |
| LXK-Φ120TH | 150/1 | 10P10 | 2.5 |
| LXK-Φ120TH | 200-300/1 | 10P10 | 3.75 |
| LXK-Φ120TH | 400-600/1 | 10P10 | 5 |
| LXK-Φ120TH | 100/5 | 10P10 | 2.5 |
| LXK-Φ120TH | 150-200/5 | 10P10 | 2.5 |
| LXK-Φ120TH | 300-400/5 | 10P10 | 3.75 |
| LXK-Φ120TH | 500/5 | 10P10 | 5 |
| LXK-Φ120TH | 600/5 | 10P10 | 5 |
Dimension & outline drawing of LXK-120TH — click image to zoom / view original.
