Documents JLS-35K 33kV Cast-Resin CT Transformer: IEC 61869-2 Compliant for Metering & Protection for current transformer Applicat May 19, 2026 / May 2, 2026 by tianming Introduction to the JLS-35K Current Transformer The JLS-35K is a high-voltage, outdoor-rated cast-resin current transformer (CT) engineered for reliable operation in 33kV (IEC) / 35kV (domestic) power systems. Designed in strict accordance with IEC 61869-2 and GB/T 20840.2, this instrument transformer delivers precise current measurement for both metering and protective relaying applications in transmission and […] Read more »
3kV-12kV Indoor CTs LZZB6-12 / LZZB6J-12 Indoor Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LZZB6-12 / LZZB6J-12 indoor epoxy cast-resin current transformer for 10kV, 11kV, 12kV indoor switchgear. Reinforced J variant with fully enclosed busbar/cable-through aperture, 1500A–5000A primary current, 5A/1A secondary output, IEC61869-2 compliance and GB20840 standards. Read more »
3kV-12kV Indoor CTs LZZ-10 (AK12) Post-Type Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LZZ-10 (AK12) indoor post-type epoxy cast-resin current transformer for 10kV, 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with 5A or 1A secondary output, 12/42/75kV insulation level, top P1/P2 terminals, lower secondary terminal box and IEC 61869-2 technical documentation. Read more »
3kV-12kV Indoor CTs LZJC-12G, LZJC-12Q Indoor Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LZJC-12G / LZJC-12Q indoor single-phase epoxy cast-resin current transformer for 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with 5A or 1A secondary output, 12/42/75kV insulation level, fully enclosed support-type structure, external groove insulation design and IEC 61869-2 technical standard. Read more »
3kV-12kV Indoor CTs LZZBJ9-12D1/D2 Indoor Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LZZBJ9-12D1/D2 indoor epoxy cast-resin current transformer for 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with 5A or 1A secondary output, 12/42/75kV insulation level, multi-secondary winding groups, 0.2S/0.5S metering accuracy and 5P20 protection options. Read more »
3kV-12kV Indoor CTs LFS-10Q, LFSB-10, LFSZ6-10 Compact Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LFS-10Q / LFSB-10 / LFSZ-10 compact indoor epoxy cast-resin current transformer for 10kV, 11kV and 12kV class switchgear. Designed as a small-size single-secondary-winding MV CT for metering, measurement and relay protection, with 5A or 1A secondary output, 12/42/75kV insulation level, and 0.2/0.5/10P10 accuracy options. Read more »
3kV-12kV Indoor CTs LZX-10Q Series Indoor Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LZX-10 Series indoor epoxy cast-resin current transformer for 11kV and 12kV class switchgear, covering LZX-10, LZX-10Q, LZX4-10 and LZX5-10 variants. Designed for current measurement, energy metering and relay protection, with 5A or 1A secondary output, 12/42/75kV insulation level, 0.2S/0.2/0.5 metering classes and 5P/10P protection options. Read more »
3kV-12kV Indoor CTs LZZBJ9-10E Indoor Economy-Type Epoxy Cast-Resin Current Transformer May 18, 2026 / May 18, 2026 by tianming LZZBJ9-10E indoor economy-type epoxy cast-resin current transformer for 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with 800A / 0.2S / 15VA project configuration, 5A or 1A secondary output, 12/42/75kV insulation level and IEC 61869-2 oriented technical documentation. Read more »
Documents Choose the Right ZW-10 CT for 10kV Systems—Cast-Resin, 1A/5A Outputs, Protection Class Certified May 18, 2026 / April 22, 2026 by tianming Introduction The ZW-10 Current Transformer is a critical component in medium-voltage power systems, specifically engineered for reliable and accurate current measurement and protection in 10kV networks. As part of the broader family of instrument transformers, the ZW-10 enables safe interfacing between high-voltage primary circuits and low-voltage secondary instrumentation—such as relays, meters, and monitoring devices—by stepping […] Read more »
Documents Outdoor/Indoor 11kV Cast-Resin Current Transformer LFS-10 – IEC 61869-2 Compliant for current transformer Applications May 18, 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 high-voltage, cast-resin insulated current transformer (CT) engineered for precise current measurement and robust protection functions in 11kV (IEC standard) or 10kV (domestic system equivalent) alternating current networks. Designed for both indoor switchgear panels and outdoor […] Read more »
Documents MV Switchgear Insulation Coordination: BIL, Withstand Voltage & Clearance Guide (IEC 62271-1, IEEE C37.20) May 18, 2026 by tianming MV Switchgear Insulation Coordination: BIL, Withstand Voltage & Clearance Guide (IEC 62271-1, IEEE C37.20) Meta Description: Comprehensive guide on medium-voltage switchgear insulation coordination. Covers BIL, power-frequency withstand voltage, clearances, creepage distances, and compliance with IEC 62271-1 and IEEE C37.20. Includes selection methodology, testing procedures, and troubleshooting for air-insulated (AIS) and gas-insulated (GIS) switchgear. 1. Introduction […] Read more »
Documents CT-10KV 11kV Cast-Resin Current Transformer Selection Guide: IP54 Outdoor Metering & Protection May 18, 2026 / April 22, 2026 by tianming Introduction The CT-10KV current transformer is a critical component in medium-voltage electrical power systems, specifically engineered for applications operating at up to 10 kilovolts (kV). Designed to provide accurate current measurement and reliable protection functions, this instrument transformer isolates high-voltage primary circuits from low-voltage secondary instrumentation, thereby enhancing safety and enabling precise monitoring. Current transformers […] Read more »
