Indoor single-phase circular bushing-type current transformer matched for 10kV ring main units, complying with GB/T20840.1/2 and IEC61869-1/2 standards.
Indoor 27.5kV bushing-type CT for ring main units; accuracy 0.2/0.5, burden up to 200VA. Suitable for protection and metering in RMU applications.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | LZYT-10 | Factory nameplate marking |
| Primary Voltage | 27.5kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | [On Request] | Ratio check at rated frequency |
| Accuracy Class | 0.2、0.5 | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | 20VA(0.2),50VA(0.5),100VA(1.0),200VA(3P) | Burden test at rated VA |
| Insulation Type | Dry Epoxy Resin | Dielectric tests per standard |
| Insulation Level (BIL) | 31.5/95/200kV | 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
secondary terminals 1S1/1S2 (protection winding 2S1-2S2). Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Follow IEC 61869-2 terminal conventions.
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 27.5kV system; power-frequency withstand 95kV; lightning impulse withstand 200kV peak.
Q: What accuracy classes are available?
A: Accuracy classes 0.2 and 0.5 are available, with rated burdens of 20VA and 50VA respectively.
Q: Is this CT suitable for outdoor use?
A: No, it is designed for indoor ring main units and should not be used outdoors.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Parameter | Value |
|---|---|
| Product performance complies with standards | GB/T20840.1, 2 and IEC61869-1, 2 |
| Rated insulation level | 0.72/3kV |
| Rated frequency | 50Hz or 60Hz |
| Rated secondary current | 5A or 1A |
| Ambient temperature | -5℃~+40℃ |
Dimension & outline drawing of LZYT-10 — click image to zoom / view original.
