Split-core zero sequence current transformer specially designed for 6kV-35kV indoor cable head outlets. Can be installed without power interruption - split into two halves and bolted together. Rated frequency 50Hz or 60Hz. Inner diameter range Φ100 to Φ250, suitable for various cable sizes. Compliant with IEC 61869 and GB/T 20840 standards. Hot-line installation capability saves downtime and maintenance cost. Epoxy resin cast construction, reliable performance.
Split-core zero-sequence CT for 6-35kV indoor cable head outlets, installable without power interruption.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869, GB/T 20840 |
| Model Code | LKZB-100-250 | Factory nameplate marking |
| Primary Voltage | 6kV-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 | Epoxy resin cast | Per datasheet limits |
Ideal For
Not Recommended For
For current transformers, never open-circuit the secondary while energized - hazardous voltage. Terminals: 1S1/1S2 for main winding, 2S1/2S2 for zero-sequence winding. Ground the secondary at one point. Follow IEC 61869 for terminal markings.
Compliant with: IEC 61869, GB/T 20840
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: Can this CT be installed without power interruption?
A: Yes, the split-core design allows hot-line installation.
Q: What is the inner diameter range?
A: Φ100 to Φ250, suitable for various cable sizes.
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.
| Rated current ratio (A) | Accuracy class | Rated output (VA) |
|---|---|---|
| 50/1 | 10P10 | 1 |
| 75/1 | 10P10 | 1.5 |
| 100/1~150/1 | 10P10 | 2.5 |
| 200/1~600/1 | 10P10 | 5 |
Dimension & outline drawing of LKZB-100-250 — click image to zoom / view original.
