3kV-12kV Indoor CTs LMZB3-10Q/137 Epoxy Cast-Resin Cable Busbar-Through Current Transformer May 16, 2026 / May 16, 2026 by tianming LMZB3-10Q/137 indoor epoxy cast-resin cable/busbar-through current transformer for 10kV, 11kV and 12kV class medium-voltage switchgear. Designed for high-current measurement, energy metering and relay protection, with 1500A–5000A current range, Ø137 aperture, 12/42/75kV insulation level, 240mm creepage distance and 0.2/5P, 0.5/5P or 5P/5P accuracy combinations. Read more »
Documents JWD-10 11kV Outdoor Current Transformer: IEC-Compliant 0.2S Metering & Protection Class Selection May 16, 2026 / April 22, 2026 by tianming Introduction The JWD-10 current transformer is a critical component in medium-voltage power systems, specifically engineered for reliable and accurate current measurement and protection in 10 kV networks. As a resin-insulated, outdoor-type current transformer, the JWD-10 combines robust mechanical construction with high dielectric strength, ensuring long-term performance under demanding environmental conditions. Its primary applications include integration […] Read more »
3kV-12kV Indoor CTs LMZD2-10Q Epoxy Cast-Resin Cable / Busbar-Through Wall-Mounted CTs May 16, 2026 / May 16, 2026 by tianming LMZD2-10Q indoor epoxy cast-resin cable/busbar-through wall-mounted current transformer for 10kV, 11kV and 12kV class medium-voltage switchgear. Designed for high-current measurement, energy metering and relay protection, with 1200A–5000A primary current range, 12/42/75kV insulation level, 255mm creepage distance, and 0.2/5P, 0.5/5P or 5P/5P accuracy combinations. Read more »
Documents LFS-10 11kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Metering and Protection for substation appl… May 16, 2026 / May 2, 2026 by tianming IEC 61869-2 Certified 11kV Cast-Resin Current Transformer LFS-10 for Metering & Protection Applications Introduction to the LFS-10 Current Transformer The LFS-10 is a medium-voltage cast-resin current transformer engineered for precision current measurement and protective relaying in 11kV (IEC) / 10kV (domestic) electrical networks. Designed for both indoor and outdoor deployment, this instrument leverages vacuum pressure […] Read more »
Documents Instrument Transformer Maintenance & Diagnostic Testing: Tan δ, PD, Ratio & Excitation Guide (IEC 61869, IEEE C57.13) May 16, 2026 by tianming Instrument Transformer Maintenance & Diagnostic Testing: Tan δ, PD, Ratio & Excitation Guide (IEC 61869, IEEE C57.13) Meta Description: Comprehensive guide on instrument transformer maintenance and diagnostic testing. Covers tan δ, partial discharge, ratio, excitation, and insulation resistance testing per IEC 61869 and IEEE C57.13. Includes testing procedures, acceptance criteria, trend analysis, and troubleshooting for […] Read more »
Documents LB-10W 11kV Current Transformer Selection: IEC-Compliant Cast-Resin CT for Metering & Protection May 16, 2026 / April 22, 2026 by tianming Introduction The LB-10W Current Transformer (CT) is a critical component in medium-voltage power systems, specifically engineered for reliable and accurate current measurement and protection applications at system voltages up to 10 kV. Designed with robust insulation and high thermal stability, the LB-10W ensures safe operation under demanding electrical conditions while maintaining precise performance over extended […] Read more »
3kV-12kV Indoor CTs LA-10Q, LFZ-10Q, LFZB1-10Q Wall-Through Cast Resin Current Transformer May 15, 2026 / May 15, 2026 by tianming LA-10Q / LFZ-10Q / LFZB1-10Q indoor wall-through cast resin current transformer for 10kV, 11kV and 12kV class switchgear. 5-200/5A ratios use semi-enclosed resin casting, while 300-1500/5A ratios use fully enclosed casting for higher-current circuits. Suitable for metering, measurement and 10P10 relay protection. Read more »
3kV-12kV Indoor CTs LA-10, LFZ1-10, LFZB1-10 Semi-Enclosed Cast-Resin Wall-Through Current Transformer May 15, 2026 / May 15, 2026 by tianming LA-10 / LFZ1-10 / LFZB1-10 semi-enclosed cast-resin wall-through current transformer for 10kV, 11kV and 12kV class indoor switchgear. Designed for current measurement, energy metering and relay protection, with 5A secondary output, 11.5/42/75kV insulation level, semi-enclosed structure for 200A and below, and fully enclosed structure for 300A to 1500A applications. Read more »
3kV-12kV Indoor CTs LAJ-10, LFZJ-10 Wall-Through Epoxy Resin Cast Current Transformer May 15, 2026 / May 15, 2026 by tianming LAJ-10 / LFZJ-10 indoor wall-through epoxy resin cast current transformer for 10kV, 11kV and 12kV class medium-voltage switchgear. Designed for current measurement, energy metering and relay protection, with 20A–6000A primary current range, 1A or 5A secondary output, 11.5/42/75kV insulation level and 0.2/0.5/10P accuracy options. Read more »
3kV-12kV Indoor CTs LAJ-10Q, LFZJ-10Q Wall-Through Resin Cast Current Transformer May 15, 2026 / May 15, 2026 by tianming LAJ-10Q / LFZJ-10Q indoor wall-through resin cast current transformer for 10kV, 11kV and 12kV class medium-voltage switchgear. Designed for current measurement, power measurement and relay protection, with 5A or 1A secondary output, 5/5A–1500/5A current ratios, 11.5/42/75kV insulation level, and 0.2/0.5/1/10P10 accuracy classes. Read more »
3kV-12kV Indoor CTs LDZ1-10 Indoor Epoxy Resin Cast Single-Turn-Through Current Transformer May 15, 2026 by tianming LDZ1-10 indoor epoxy resin cast single-turn-through current transformer for 10kV, 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with resin casting insulation, annealed ring core, wall-through mounting base, earthing bolt and fixed cabinet installation. Read more »
3kV-12kV Indoor CTs LFZ2-10 Epoxy Resin Cast Multi-Turn-Through Current Transformer May 15, 2026 / May 15, 2026 by tianming LFZ2-10 indoor epoxy resin cast multi-turn-through current transformer for 10kV, 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with semi-enclosed cast-resin insulation, P1/P2 primary terminals, S1/S2 secondary terminals, mounting plate and vertical or horizontal installation. Read more »
