Zero sequence current transformer for low voltage systems, rated 0.72/3kV. Rectangular through-core design for cable installation. Rated frequency 50/60Hz, secondary current 5A or 1A. Ambient temperature range -40°C to +40°C. Compliant with IEC 61869 and GB/T 20840 standards. Used for ground fault protection and residual current monitoring. Epoxy resin cast, reliable performance, easy installation.
LXZ is a zero-sequence current transformer for 0.72/3kV systems, ideal for ground fault protection and residual current monitoring in low-voltage networks.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869, GB/T 20840 |
| Model Code | LXZ | Factory nameplate marking |
| Primary Voltage | 0.72/3kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | 5A or 1A | 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 | Rectangular through-core epoxy cast; Ambient: -40°C ~ +40°C | Per datasheet limits |
Ideal For
Not Recommended For
Connect secondary terminals 1S1 and 1S2 to the protection relay. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Ensure the primary conductor passes through the rectangular window and is properly insulated.
Compliant with: IEC 61869, GB/T 20840
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the primary voltage rating of the LXZ?
A: The primary voltage rating is 0.72/3kV.
Q: What are the available secondary current ratings?
A: The secondary current is available in 5A or 1A.
Q: What standards does the LXZ comply with?
A: It complies with 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.
| Parameter | Value |
|---|---|
| Product performance complies with standards | GB/T20840.1, 2 and IEC61869-1, 2 |
| Rated voltage | 0.72/3kV |
| Rated frequency | 50Hz or 60Hz |
| Rated secondary current | 5A or 1A |
| Ambient temperature | -40℃~+40℃ |
Dimension & outline drawing of LXZ — click image to zoom / view original.
