Instrument Transformers (CT / VT)
Current and voltage instrument transformers rely on stable permeability and low phase error. Nanocrystalline and silicon steel toroidal cores are supplied epoxy coated, taped or cased for potting.
Key requirements
- High permeability, low phase displacement
- Epoxy coated or PBT cased options
- Batch traceability by core lot
Recommended cores
OD-CoreSilicon Steel Toroidal Core
Grain-oriented silicon steel toroidal cores for instrument transformers, power transformers and reactors.
View specifications →
NC-METERNanocrystalline Cores for Smart Meters
1K107 Fe-based nanocrystalline cores for built-in current transformers in smart single- and three-phase meters, meeting class 0.1 / 0.05 accuracy.
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NC-RCDNanocrystalline Cores for Residual Current Transformers
Closed-ring nanocrystalline cores for AC / A / B type residual current detection, sensitive down to 10 mA leakage.
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NC-WELDERNanocrystalline Cores for Inverter Welders
Cores for 10–50 kHz inverter welder main transformers — a drop-in upgrade over MnZn ferrite with smaller size and lower temperature rise.
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NC-LMZNanocrystalline Cores for LMZ1D–LMZ5D Current Transformers
For State Grid LMZ1D–LMZ5D low-voltage current transformers, compliant with Q/GDW572-2010 and covering class 0.2S / 0.5S.
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NC-HVCTNanocrystalline Cores for MV/HV Current Transformers
Cores for 10 kV / 35 kV current transformers — low remanence, transverse-field annealed, meeting 0.2S gateway metering.
View specifications →FAQ
Do you supply cores for LMZ / MV / HV current transformers?
Yes — we produce nanocrystalline cores for LMZ1D/LMZ5D, MV and HV current transformers, with coating and casing options.
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