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:20-400A、500-600A、800A、1000A; accuracy combinations 0.2S/10P15、0.5S/10P15 with rated output:0.2S10VA、0.5S10VA、10P15 15VA. Short-time thermal current 60I₁ₙ, dynamic stable current 120I₁ₙ, net weight 15kg, operating ambient temperature -5℃~+40℃.
Indoor 10kV epoxy cast current transformer for MV switchgear, rated 0.66kV primary, 5A secondary, accuracy 0.2S.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | IEC 61869 / GB/T 20840 |
| Model Code | LZJD-10G | 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 terminals in series with the line. Secondary terminals: 1S1/1S2 for metering winding, 2S1/2S2 for protection winding. 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 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 outdoor applications?
A: No, it is designed for indoor use only.
Q: What are the available primary current ranges?
A: Optional primary current ranges: 20-400A, 500-600A, 800A, 1000A.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Model | Rated primary current I1n (A) | Accuracy classCombined | 0.2(S) | 0.5(S) | 10P10 | 10P15 | Short-time thermal current Ith (kA/S) | Rated dynamic current Idyn (kA) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| LZJ-10G | 20-400 | 0.2(S)/10P10 0.5(S)/10P10 | 10 | 10 | 15 | — | 60 I1n | 120 I1n | 15 |
| LZJ-10G | 500-600 | 0.2(S)/10P10 0.5(S)/10P10 | 10 | 10 | 15 | — | 60 I1n | 120 I1n | 15 |
| LZJ-10G | 800 | 0.2(S)/10P10 0.5(S)/10P10 | 10 | 10 | 15 | — | 60 I1n | 120 I1n | 15 |
| LZJ-10G | 1000 | 0.2(S)/10P10 0.5(S)/10P10 | 10 | 10 | 15 | — | 60 I1n | 120 I1n | 15 |
| LZJC-10G LZJD-10G | 20-400 | 0.2(S)/10P15 0.5(S)/10P15 | 10 | 10 | — | 15 | 60 I1n | 120 I1n | 15 |
| LZJC-10G LZJD-10G | 500-600 | 0.2(S)/10P15 0.5(S)/10P15 | 10 | 10 | — | 15 | 60 I1n | 120 I1n | 15 |
| LZJC-10G LZJD-10G | 800 | 0.2(S)/10P15 0.5(S)/10P15 | 10 | 10 | — | 15 | 60 I1n | 120 I1n | 15 |
| LZJC-10G LZJD-10G | 1000 | 0.2(S)/10P15 0.5(S)/10P15 | 10 | 10 | — | 15 | 60 I1n | 120 I1n | 15 |
Dimension & outline drawing of LZJD-10G — click image to zoom / view original.
