Documents REL-10 11kV Voltage Transformer Selection Guide: IEC 61869 Outdoor & Indoor VT for Metering & Protection May 19, 2026 / April 22, 2026 by tianming Introduction The REL-10 Voltage Transformer is a critical component in medium-voltage power systems, specifically engineered for reliable and accurate voltage measurement and protection at the 10 kV level. Designed in compliance with international standards such as IEC 61869, this instrument transformer isolates high-voltage circuits from secondary instrumentation and protective relays, thereby enhancing safety and operational […] Read more »
3kV-12kV Indoor CTs LZZJ-10, LZZJ-12Q, LZZ(B)J1-10 Epoxy Cast-Resin Current Transformer May 19, 2026 / July 20, 2026 by tianming LZZJ-10, LZZJ-12Q, LZZ(B)J1-10 indoor epoxy cast-resin current transformer for international 10kV, 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with 12/42/75kV insulation level, 1A or 5A secondary output, single or double ratio options, and 0.2S/0.5/1/10P10 accuracy classes. Read more »
3kV-12kV Indoor CTs LZZ(B)J2-10, LZZBJ2-12 Post-Type Epoxy Cast-Resin Current Transformer May 19, 2026 / July 20, 2026 by tianming LZZ(B)J2-10 / LZZBJ2-12 indoor Post-Type epoxy cast-resin current transformer for international 10kV, 11kV and 12kV class switchgear. Designed for current measurement, energy metering and relay protection, with 12/42/75kV insulation level, 1A or 5A secondary output, single or double ratio options, and 0.2/0.5/10P10 accuracy combinations. Read more »
Documents Digital Substation & IEC 61850 Instrument Transformers: Merging Units, Process Bus & Digital Output Guide (IEC 61850-9-2, IEC 61869-9) May 19, 2026 by tianming Digital Substation & IEC 61850 Instrument Transformers: Merging Units, Process Bus & Digital Output Guide (IEC 61850-9-2, IEC 61869-9) Meta Description: Comprehensive guide on digital substation instrument transformers and IEC 61850 integration. Covers merging units (MU), process bus, digital output (IEC 61850-9-2, IEC 60044-8), and compliance with IEC 61869-9. Includes architecture, selection methodology, testing procedures, […] Read more »
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 »
Documents Outdoor/Indoor RZL-10 11kV Voltage Transformers—Epoxy-Encapsulated for Reliable Switchgear Metering May 19, 2026 / April 22, 2026 by tianming Introduction The RZL-10 voltage transformer is a critical component in medium-voltage power systems, specifically engineered for reliable and accurate voltage measurement, protection, and metering applications at the 10 kV level. As part of the resin-cast, indoor-type instrument transformer family, the RZL-10 offers excellent insulation performance, compact design, and long-term operational stability under normal and transient […] Read more »
3kV-12kV Indoor CTs LZZB6-12 / LZZB6J-12 Indoor Epoxy Cast-Resin Current Transformer May 18, 2026 / July 20, 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 / July 20, 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 / July 20, 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 / July 20, 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 / July 20, 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 / July 20, 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 »
