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:2500A、3000A、4000A、5000A; accuracy combinations include 0.2/5P20、0.5/5P10/5P20、0.2/5P10/5P20、0.2/5P20/5P20, corresponding rated output specifications such as 30/30VA,30/25/25VA etc., net weight 30kg, ambient operating temperature -5℃~+40℃.
Indoor 10kV cast-resin current transformer for MV switchgear, metering and protection.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | LMZB1-10 | 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 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: 12kV system; power-frequency withstand 42kV; lightning impulse withstand 75kV peak.
Q: What secondary currents are available?
A: 5A or 1A as per specification.
Q: Can it be used outdoors?
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.
| Rated primary current I1n (A) | Accuracy classCombined | Accuracy class & rated output (VA) COSΦ=0.8 | Weight (kg) |
|---|---|---|---|
| 2500 | 0.2/5P20 0.5/5P10/5P20 0.2/5P10/5P20 0.2/5P20/5P20 | 30/30 30/30/30 30/30/30 30/20/20 | 30 |
| 3000 | 0.2/5P20 0.5/5P10/5P20 0.2/5P10/5P20 0.2/5P20/5P20 | 30/30 30/30/30 30/30/30 30/20/20 | 30 |
| 4000 | 0.2/5P20 0.5/5P10/5P20 0.2/5P10/5P20 0.2/5P20/5P20 | 30/30 30/30/30 30/30/30 30/20/20 | 30 |
| 5000 | 0.2/5P20 0.5/5P10/5P20 0.2/5P10/5P20 0.2/5P20/5P20 | 30/30 30/30/30 30/30/30 30/20/20 | 30 |
