Indoor single-phase epoxy resin casting current transformer specially designed for SF6 gas switchgear, compliant with GB/T20840.1, GB/T20840.2, IEC61869-1 and IEC61869-2 standards.
Indoor CT for 10kV systems, ideal for SF6 switchgear, with 5A/1A secondary and dry epoxy insulation.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | LZZ9-10 | Factory nameplate marking |
| Primary Voltage | 10kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | 5A / 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) | 0.72/3kV | Power-frequency & lightning impulse withstand |
| Standards | [On Request] | Certified to listed standards |
| Frequency | 50Hz / 60Hz | Per IEC 61869-1 |
| Environment | [On Request] | Per datasheet limits |
Ideal For
Not Recommended For
Connect primary in series with the line. Secondary terminals: 1S1 and 1S2 for metering, 2S1 and 2S2 for protection if present. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Follow IEC 61869-2 terminal markings.
Compliant with: [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the insulation level of this CT?
A: The insulation level is 0.72/3kV, meaning 0.72kV system voltage and 3kV power-frequency withstand.
Q: Can this CT be used outdoors?
A: No, it is designed for indoor use, specifically for SF6 switchgear.
Q: What standards does it comply with?
A: It complies with GB/T20840.1, GB/T20840.2, IEC61869-1, and IEC61869-2.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Rated primary current I1n (A) | Accuracy classCombined | Accuracy class & rated output (VA) COSφ=0.8 (0.2 (S)) | Accuracy class & rated output (VA) COSφ=0.8 (0.5 (S)) | Short-time thermal current Ith (kA/S) | Rated dynamic current Idyn (kA) | Weight (kg) |
|---|---|---|---|---|---|---|
| 20-150 | 0.2(S) 0.5(S) 0.2S/0.2 | 10 | 10 | 60I1n | 150I1n | 20 |
Dimension & outline drawing of LZZ9-10 — click image to zoom / view original.
