3kV-12kV Indoor CTs LFC(D)-10 Indoor Multi-Turn Wall-Through Current Transformer May 15, 2026 / July 20, 2026 by tianming LFC-10 / LFCD-10 indoor multi-turn wall-through current transformer is designed for 10kV, 11kV and 12kV medium-voltage switchgear. It supports current measurement, energy metering, relay protection and differential protection, with porcelain insulation, 12/42/75kV insulation level, 5A secondary output and 30A–400A primary current ratings. Read more »
3kV-12kV Indoor CTs LDC-10, LDCD-10 Indoor Wall-Through Current Transformer, 10kV–12kV May 15, 2026 / July 20, 2026 by tianming LDC-10 / LDC(D)-10 indoor wall-through current transformer for 10kV, 11kV and 12kV medium-voltage switchgear. Designed for current measurement, electric energy metering, relay protection and differential protection, with porcelain-insulated primary conductor, 12/42/75kV IEC-style insulation level, 5A secondary output and 600A–1500A reference primary current ratings. Read more »
Documents PT Ferroresonance & Mitigation in MV Systems: Mechanisms, Detection & Suppression Guide (IEC 61869-3, IEEE C57.13) May 15, 2026 by tianming PT Ferroresonance & Mitigation in MV Systems: Mechanisms, Detection & Suppression Guide (IEC 61869-3, IEEE C57.13) Meta Description: Comprehensive guide on voltage transformer (PT) ferroresonance in medium-voltage systems. Covers mechanisms, detection methods, mitigation techniques, and compliance with IEC 61869-3 and IEEE C57.13. Includes case studies, testing procedures, and troubleshooting for ferroresonance suppression in ungrounded, resistance-grounded, […] Read more »
Documents Outdoor/Indoor 11kV Current Transformer LJ-2 | 0.2S Metering, 5P Protection, IP54 Cast-Resin CT May 15, 2026 / April 22, 2026 by tianming Introduction The LJ-2 Current Transformer (CT) is a high-voltage instrument transformer specifically engineered for accurate current measurement and protection applications in 10 kV power distribution systems. Designed to meet stringent international standards such as IEC 61869-1 and IEC 61869-2, the LJ-2 ensures reliable performance under diverse operational conditions, including transient overloads, harmonic distortions, and environmental […] Read more »
3kV-12kV Indoor CTs LDC(D)-10, LMC(D)-10 Indoor Wall-Through Type Current Transformer May 14, 2026 / July 20, 2026 by tianming LDC(D)-10 / LMC(D)-10 indoor wall-through and bus-type current transformers for 10kV, 11kV and 12kV power equipment. Designed for current measurement, energy metering, signal sampling, relay protection and microcomputer protection, with IEC-style 12/42/75kV insulation coordination, 5A/1A secondary output, differential protection options and high-current busbar configurations. Read more »
3kV-12kV Indoor CTs LMZ-6/10, LM-6/10 Indoor Through Hole Current Transformer May 14, 2026 / July 20, 2026 by tianming LMZ-6, LMZ-10, LM-6 and LM-10 indoor through-hole epoxy resin cast current transformers for 6kV, 10kV, 11kV and 12kV switchgear. Designed for current measurement, energy metering and relay protection, with 7.2/32/60kV or 12/42/75kV insulation level, 5A/1A secondary output, 0.5/1/3 accuracy classes, 10P protection option and customizable wiring diagrams. Read more »
3kV-12kV Indoor CTs LDJ-10Q, LDJ-10/210-L(Y) Current Transformer, KYN Handcart Switchgear May 14, 2026 / July 20, 2026 by tianming LDJ-10Q and LDJ-10/210-L(Y)(Y) indoor epoxy resin cast current transformers for KYN handcart-type switchgear. Designed for current measurement, electric energy metering and relay protection in 10kV, 11kV and 12kV systems, with 12/42/75kV insulation level, 5A/1A secondary output and one primary terminal/contact box structure. Read more »
Documents LJK-100240 11kV Outdoor Current Transformer: 0.2S Accuracy & IEC 61869 for Metering & Protection May 14, 2026 / April 22, 2026 by tianming Introduction The LJK-100240 Current Transformer is a high-precision, outdoor-type instrument transformer specifically engineered for accurate current measurement and protection in 10 kV medium-voltage power systems. Designed to meet the stringent requirements of modern electrical distribution networks, this current transformer (CT) ensures reliable operation under diverse environmental and electrical conditions. It plays a critical role in […] Read more »
Documents Combined Transformer (CT+PT) Technical Guide: Selection, Testing & Application for MV Metering & Protection (IEC 61869) May 14, 2026 by tianming Combined Transformer (CT+PT) Technical Guide: Selection, Testing & Application for MV Metering & Protection (IEC 61869) Meta Description: Comprehensive guide on combined transformers (CT+PT) for medium-voltage metering and protection. Covers construction, accuracy classes, selection methodology, testing procedures, and compliance with IEC 61869. Includes application examples, wiring practices, and troubleshooting for JLS series combined transformers in […] Read more »
Documents Outdoor/Indoor 11kV Cast-Resin Current Transformer LFS-10 – IEC 61869-2 Compliant for current transformer Applications May 14, 2026 / May 2, 2026 by tianming Outdoor/Indoor 11kV Cast-Resin Current Transformer LFS-10 – IEC 61869-2 Compliant Introduction to the LFS-10 Current Transformer The LFS-10 is a medium-voltage cast-resin current transformer (CT) engineered for precise current measurement and robust protection functionality in 11kV (IEC standard) or 10kV (domestic system equivalent) power networks. Designed for both indoor switchgear and outdoor pole-mounted applications, this […] Read more »
Documents LJM-1 11kV Cast-Resin Current Transformer: IEC 61869-2 Compliant for Outdoor/Indoor Metering & Protection May 14, 2026 / April 22, 2026 by tianming Introduction The LJM-1 Current Transformer is a high-precision, resin-insulated instrument transformer specifically engineered for accurate current measurement and protection applications in 10kV medium-voltage power systems. Designed to meet stringent international standards—including IEC 61869-2, GB/T 20840.2, and DL/T 725—the LJM-1 ensures reliable performance under demanding operational conditions typical of industrial, utility, and commercial electrical installations. Its […] Read more »
Documents CT-35K 33kV Cast-Resin Current Transformer for Substation Metering and Protection – IEC 61869-2 Certified May 14, 2026 / May 2, 2026 by tianming CT-35K 33kV Cast-Resin Current Transformer for Substation Metering and Protection – IEC 61869-2 Certified Introduction to the CT-35K Current Transformer The CT-35K is a high-reliability, cast-resin insulated current transformer engineered for operation in 33 kV (IEC standard) or 35 kV (domestic system equivalent) electrical networks. Designed in strict compliance with IEC 61869-2 and GB/T 20840.2, […] Read more »
