Documents Precision Installation of LZZBJ9-10 11kV Indoor Current Transformers for Reliable Metering & Protection May 4, 2026 / April 22, 2026 by tianming Introduction The LZZBJ9-10 current transformer is a resin-insulated, indoor-type instrument transformer designed for accurate current measurement and protection in 10 kV AC power systems operating at 50 Hz or 60 Hz. This device plays a critical role in electrical substations, switchgear assemblies, and industrial power distribution networks by providing scaled-down replicas of high primary currents […] Read more »
Documents MER-1 11kV Cast-Resin Current Transformer – IEC 61869-2 Compliant for Metering & Protection Applications May 4, 2026 / May 2, 2026 by tianming IEC 61869-3 Certified 11kV Voltage Transformer MER-1 for Metering & Protection Applications Introduction to the MER-1 Voltage Transformer The MER-1 is a single-phase, indoor/outdoor-rated cast-resin voltage transformer (VT) designed for accurate voltage measurement and reliable protective relay operation in medium-voltage power systems operating at 11kV (IEC standard) or 10kV (domestic Chinese system). It employs vacuum […] Read more »
Documents Bushing CT & Circuit Breaker CT: Design, Selection & Integration Guide for GIS/AIS Substations (IEC 61869-2) May 4, 2026 by tianming Bushing CT & Circuit Breaker CT: Design, Selection & Integration Guide for GIS/AIS Substations (IEC 61869-2) Meta Description: Comprehensive guide on bushing current transformers and circuit breaker integrated CTs. Covers design principles, insulation coordination, accuracy classes, GIS/AIS integration, transient performance, and selection per IEC 61869-2 and IEEE C57.13. Includes installation guidelines, testing procedures, and comparison […] Read more »
Documents UNKNOWN 11kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Metering & Protection for substation appli… May 4, 2026 / May 2, 2026 by tianming For Substation Metering & Protection: UNKNOWN 11kV […] Read more »
Low Voltage CTs Low Voltage Current Transformers LFZ1D-0.66 low-voltage state grid metering current transformer May 4, 2026 / May 13, 2026 by tianming LFZ1D-0.66 state grid metering current transformer for indoor low-voltage AC systems up to 0.66kV. Designed for current measurement and electrical energy metering, with 5A secondary output, 10A–100A primary current options, 0.5S/0.2S accuracy classes, cast-resin insulation and fixed installation for metering cabinets. Read more »
Low Voltage CTs Low Voltage Current Transformers LFZ1D-0.66, LMZ□D-0.66 State Grid Metering Current Transformer May 4, 2026 / May 13, 2026 by tianming LFZD-0.66, LMZ□D-0.66 series cast-resin current transformers for indoor low-voltage metering systems up to 0.66kV. Designed for current measurement and electrical energy metering, with 5A or 1A secondary output, 0.2/0.2S/0.5/0.5S accuracy classes, fixed installation, and multiple round-hole or rectangular-window structures for 5A–1500A applications. Read more »
Low Voltage CTs Low Voltage Current Transformers LQZJ4, LQZ5-0.66 Solid Cast-Resin Current Transformer May 3, 2026 / May 13, 2026 by tianming Product Overview The LQZ5-0.66 solid cast-resin low-voltage current transformer is an indoor busbar-type current transformer designed for current measurement, energy metering, electrical monitoring, and relay protection in AC circuits with rated voltage up to 0.66kV. The product adopts a fully enclosed cast-resin structure, with the core and secondary winding encapsulated in epoxy resin to provide […] Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 V vertical window-type current transformer, plastic case May 3, 2026 / May 13, 2026 by tianming Product Overview The BH-0.66 V vertical window-type current transformer is an indoor plastic case low-voltage current transformer designed for current measurement, energy metering, and relay protection in AC systems with rated voltage up to 0.66kV and rated frequency of 50Hz. The product adopts a vertical through-core structure, allowing the primary busbar, round conductor, or cable […] Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66B VI Protection Current Transformer, Low Voltage Switchgear May 3, 2026 / May 13, 2026 by tianming Product Overview The BH-0.66B VI protection current transformer is an indoor plastic case current transformer designed for low-voltage AC systems with rated voltage up to 0.66kV and rated frequency of 50Hz. It is mainly used in relay protection and current monitoring circuits, providing a proportional small-current signal to protection relays, monitoring instruments, and low-voltage protection […] Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 IV Vertical Square-Hole Current Transformer, low voltage CTs May 3, 2026 / May 13, 2026 by tianming BH-0.66 IV vertical square-hole current transformer for 0.66kV low-voltage AC distribution systems. Designed for indoor metering, monitoring and current signal conversion, with 5A secondary output, 600A–3000A primary current options, 0.2/0.2S/0.5/0.5S accuracy classes, 50Hz operation and 60×30, 80×30, 100×30, 120×50 aperture sizes. Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 II Indoor Plastic Case Current Transformer, low voltage distribution May 3, 2026 / May 13, 2026 by tianming BH-0.66 II indoor plastic case current transformer for 0.66kV low-voltage AC distribution systems. Designed for metering, monitoring and current signal conversion, with 5A secondary output, 150A–4000A primary current options, 0.5/0.2/0.2S/0.5S accuracy classes, 50Hz operation and multiple rectangular window sizes for busbar or cable installation. Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 III Indoor Plastic Case Current Transformer, low voltage distribution May 3, 2026 / May 13, 2026 by tianming BH-0.66 III indoor plastic case current transformer for 0.66kV low-voltage distribution systems. Designed for metering, monitoring and current signal conversion, with 5A secondary output, 150A–5000A primary current options, 0.5/0.5S/0.2 accuracy classes, 50Hz operation, insulated flame-retardant housing and multiple window sizes for busbar installation. Read more »
