Indoor single-phase epoxy resin casting current transformer complying with GB/T20840.1/2 and IEC61869-1/2 standards, insulation level 12/42/75kV, rated frequency 50/60Hz, secondary rated current 5A or 1A. Optional primary current ranges:20-150A、200A、300A、400A、500A、600-800A、1000-1250A; accuracy combinations:0.2S/510P10、0.5S/510P10、0.2S/0.5S, corresponding rated output:10VA for 0.2S,10VA for 0.5S,15VA for 510P10; short-time thermal current 16–64 kAS, rated dynamic stable current 40–160 kA, net weight 16kg, ambient operating temperature -5℃~+40℃.
Indoor 10kV cast-resin current transformer for MV switchgear, offering high accuracy and thermal stability.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | LZZBJ60-10 | 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) | 12/42/75kV | Power-frequency & lightning impulse withstand |
| Standards | [On Request] | Certified to listed standards |
| Frequency | 50/60Hz | Per IEC 61869-1 |
| Environment | Ambient: -5℃~+40℃ | Per datasheet limits |
Ideal For
Not Recommended For
Connect primary in series with the line. Secondary terminals: 1S1-1S2 for metering, 2S1-2S2 for protection. 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 12/42/75kV, meaning 12kV system voltage, 42kV power-frequency withstand, 75kV lightning impulse withstand.
Q: Can this CT be used for both metering and protection?
A: Yes, it offers accuracy combinations like 0.2S/5P10, with separate secondary windings for metering and protection.
Q: What is the weight of this CT?
A: The net weight is 16kg.
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 | Rated output (VA) COSφ=0.8 (0.2/0.5/5P) | Rated output (VA) COSφ=0.8 (10P) | Short-time thermal current Ith (kA/S) | Rated dynamic current Idyn (kA) | Weight (kg) |
|---|---|---|---|---|---|---|
| 20-150 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 100/1n | 250/1n | 16 |
| 200 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 16 | 40 | 16 |
| 300 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 24 | 60 | 16 |
| 400 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 30 | 75 | 16 |
| 500 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 40 | 100 | 16 |
| 600-800 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 48 | 120 | 16 |
| 1000-1250 | 0.2(5)/5(10)P10 0.5(5)/5(10)P10 0.2(5)/0.5(5) | 10 | 10 | 64 | 160 | 16 |
Dimension & outline drawing of LZZBJ60-10 — click image to zoom / view original.
