Indoor epoxy cast LV current transformer, State Grid standard, primary rated current 75A, accuracy 0.2S/0.5S, for metering in low-voltage distribution systems.
LMZ1D-SKX1 is a 0.66kV indoor current transformer with 75A primary and 0.2S/0.5S accuracy, ideal for revenue metering in low-voltage distribution panels. It is not suitable for outdoor or high-voltage applications.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | LMZ1D-SKX1 | 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/0.5S | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | 5VA | 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 | [On Request] | 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 secondary, 2S1-2S2). Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary circuit at one point per IEC 61869-2.
Compliant with: [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the primary current rating?
A: The primary rated current is 75A.
Q: What accuracy classes are available?
A: Accuracy classes are 0.2S and 0.5S.
Q: Is it suitable for outdoor use?
A: No, it is designed for indoor use only.
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) | Rated output (VA) 0.2 class | Rated output (VA) 0.5 class | Primary turns |
|---|---|---|---|---|
| LMZ1D-SKX1 | 75 | 5 | 5 | 1 |
| LMZ2D-SKX2 | 100-150 | 5 | 5 | 1 |
| LMZ3D-SKX1 | 200-600 | 5 | 5 | 1 |
| LMZ4D-SKX1 | 600-800 | 10 | 10 | 1 |
| LMZ4D-SKX1 | 800-1500 | 10 | 10 | 1 |
Dimension & outline drawing of LMZ1D-SKX1 — click image to zoom / view original.
