Indoor low voltage current transformer, 0.5kV rated, epoxy resin casting type, for current measurement and protection in low voltage distribution systems. Complies with IEC 60044-1 and GB/T 1208 standards. Wide range of current ratios available, multiple accuracy classes 0.2, 0.5, 1.0. Compact size, easy installation, suitable for switchgear and panel mounting. Customizable ratios and specifications.
LMZJ1-0.5 is a low-voltage current transformer for indoor use, suitable for measurement and protection in LV distribution systems. It offers multiple accuracy classes and customizable ratios.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 60044-1 / GB/T 1208 |
| Model Code | LMZJ1-0.5 | Factory nameplate marking |
| Primary Voltage | 0.5kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | 5A/1A | Ratio check at rated frequency |
| Accuracy Class | 0.2/0.5/1.0 | 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 60044-1 / GB/T 1208 | Certified to listed standards |
| Frequency | 50/60Hz | Per IEC 61869-1 |
| Environment | [On Request] | Per datasheet limits |
Ideal For
Not Recommended For
For CT secondary wiring, ensure terminals 1S1 and 1S2 are used for the main secondary winding. If a protection winding is present, use 2S1 and 2S2. Never open-circuit the secondary of a CT while energized - hazardous voltage may occur. Ground the secondary circuit at one point only. Follow IEC 61869-2 for terminal markings and safety requirements.
Compliant with: IEC 60044-1 / GB/T 1208
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the rated primary voltage of the LMZJ1-0.5?
A: The rated primary voltage is 0.5kV, suitable for low-voltage systems.
Q: What accuracy classes are available?
A: Accuracy classes 0.2, 0.5, and 1.0 are available for different measurement and protection needs.
Q: Can the current ratio be customized?
A: Yes, the current ratio can be customized to meet specific application requirements.
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 | Rated output (VA) 1 class | Primary Turns through core |
|---|---|---|---|---|---|
| LMZ1-0.5 | 5 | 2.5 | 5 | 5 | 30 |
| LMZ1-0.5 | 10 | 2.5 | 5 | 5 | 15 |
| LMZ1-0.5 | 15 | 2.5 | 5 | 5 | 10 |
| LMZ1-0.5 | 20 | 2.5 | 5 | 5 | 8 |
| LMZ1-0.5 | 30 | 2.5 | 5 | 5 | 5 |
| LMZ1-0.5 | 50 | 2.5 | 5 | 5 | 3 |
| LMZ1-0.5 | 75 | 2.5 | 5 | 5 | 2 |
| LMZ1-0.5 | 100 | 2.5 | 5 | 5 | 2 |
| LMZ1-0.5 | 100 | - | - | 5 | 1 |
| LMZ1-0.5 | 150-250 | - | - | 5 | 1 |
| LMZ1-0.5 | 300 | 5 | 5 | 7.5 | 1 |
| LMZ1-0.5 | 400 | 5 | 5 | 7.5 | 1 |
| LMZ(J)1-0.5 | 500-600 | 10 | 10 | 15 | 1 |
| LMZ(J)1-0.5 | 1000-1500 | 20 | 20 | 30 | 1 |
| LMZ(J)1-0.5 | 2000-3000 | 20 | 20 | 30 | 1 |
Dimension & outline drawing of LMZJ1-0.5 — click image to zoom / view original.
