Indoor low voltage current transformer, 0.66kV rated, epoxy resin casting type, State Grid standard, for high precision current measurement in low voltage distribution systems. Complies with IEC 61869 and GB/T 20840 standards. High accuracy class 0.2S, reliable performance. Compact size, easy installation, suitable for metering applications. Customizable ratios and specifications.
LFZ1D is a 0.66kV indoor current transformer with 0.2S accuracy, ideal for high-precision metering in low-voltage distribution. It is not suitable for outdoor or high-voltage applications.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869 / GB/T 20840 |
| Model Code | LFZ1D | Factory nameplate marking |
| Primary Voltage | 0.66kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | 5A | Ratio check at rated frequency |
| Accuracy Class | 0.2S | 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
Connect primary through the window; secondary terminals are 1S1 and 1S2 (if dual-winding, 2S1-2S2). 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 LFZ1D?
A: 0.2S, suitable for high-precision metering.
Q: Can LFZ1D be used outdoors?
A: No, it is designed for indoor use only.
Q: What standards does LFZ1D 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.
| Model | Rated primary current (A) | Accuracy class | Rated output (VA) | Short-time thermal current (kA/s) | Rated dynamic current (kA) | Power factor |
|---|---|---|---|---|---|---|
| LFZ1D-SKX1 | 10-60 | 0.2S | 5 | 60 I1n | 150 I1n | COSΦ=0.8 |
Dimension & outline drawing of LFZ1D — click image to zoom / view original.
