Documents UTF-8 11kV Cast-Resin CT Transformer: IEC 61869-2 Compliant for Metering & Protection for current transformer Applicatio April 5, 2026 / May 2, 2026 by tianming Introduction to the UTF-8 Current Transformer The UTF-8 is a high-reliability, cast-resin insulated current transformer (CT) engineered for accurate current measurement and protective relaying in medium-voltage power systems operating at 11kV (IEC standard) or 10kV (domestic Chinese grid). Designed in strict compliance with IEC 61869-2 and GB/T 20840.2, this instrument transformer leverages advanced vacuum pressure […] Read more »
Documents Capacitive Voltage Transformer (CVT): Working Principle, Structure, Error Analysis & Selection Guide (IEC 61869-3) April 4, 2026 / May 2, 2026 by tianming Capacitive Voltage Transformer (CVT): Working Principle, Structure, Error Analysis & Selection Guide (IEC 61869-3) Meta Description: Comprehensive guide on Capacitive Voltage Transformers (CVT). Covers working principle, capacitor divider design, electromagnetic unit, frequency response, accuracy classes, transient performance, and selection per IEC 61869-3 and IEEE C57.13. Includes error analysis, damping circuits, and field testing procedures. 1. […] Read more »
Documents UTF-8 33kV Cast-Resin VT Transformer: IEC 61869-3 Compliant for Metering & Protection for voltage transformer Applicatio April 3, 2026 / May 2, 2026 by tianming Introduction to the UTF-8 Voltage Transformer The UTF-8 is a single-phase, indoor/outdoor-rated cast-resin voltage transformer (VT) engineered for high-reliability operation in 33kV transmission and distribution networks. Designed in strict accordance with IEC 61869-3 and GB/T 20840.3, it serves critical roles in metering, protection, and monitoring systems within modern substations. Unlike legacy oil-immersed designs, the UTF-8 […] Read more »
Documents LJ-ZW32-10 11kV Cast-Resin Current Transformer for Precision Metering & Protection – IEC 61869-2 Certified April 2, 2026 / April 28, 2026 by tianming LJ-ZW32-10 current transformer for 11kV applications. Routine testing procedures, maintenance schedule, and troubleshooting guide. Read more »
Documents Current Transformer Secondary Wiring & Burden Calculation Guide: Circuit Design, Voltage Drop & Compliance per IEC 61869-2 April 1, 2026 / May 2, 2026 by tianming Current Transformer Secondary Wiring & Burden Calculation Guide: Circuit Design, Voltage Drop & Compliance per IEC 61869-2 Meta Description: Comprehensive guide on current transformer secondary wiring design and burden calculation. Covers cable sizing, voltage drop analysis, burden matching, multi-point grounding hazards, terminal connection standards, and compliance with IEC 61869-2 and IEEE C57.13. Includes practical calculation […] Read more »
Documents CT-10K 11kV Cast-Resin Current Transformer for Substation Metering and Protection – IEC 61869-2 Certified April 1, 2026 / May 2, 2026 by tianming CT-10K 11kV Cast-Resin Current Transformer for Substati […] Read more »
Documents UTF-8 11kV Cast-Resin VT Transformer: IEC 61869-3 Compliant for Metering & Protection for voltage transformer Applicatio April 1, 2026 / May 2, 2026 by tianming Introduction to the UTF-8 Voltage Transformer The UTF-8 is a single-phase, indoor/outdoor-rated cast-resin voltage transformer (VT) engineered for accurate voltage measurement and reliable protective relay operation in medium-voltage networks operating at 11kV (IEC standard) or 10kV (domestic Chinese system). Designed in strict compliance with IEC 61869-3 and GB/T 20840.3, this instrument transformer leverages advanced vacuum […] Read more »
Documents UTF-8 11kV Cast-Resin Current Transformer for Substation Metering and Protection – IEC 61869-2 Certified March 30, 2026 / May 2, 2026 by tianming UTF-8 11kV Cast-Resin Current Transformer for Substation Metering and Protection – IEC 61869-2 Certified Introduction to the UTF-8 Current Transformer The UTF-8 is a high-reliability, dry-type current transformer (CT) designed for accurate current measurement and protective relaying in medium-voltage power systems operating at 11kV (IEC standard) or 10kV (domestic Chinese grid). Constructed using advanced vacuum […] Read more »
Documents UTF-8 11kV Cast-Resin CT Transformer: IEC 61869-2 Compliant for Metering & Protection for current transformer Applicatio March 28, 2026 / May 2, 2026 by tianming Introduction to the UTF-8 Current Transformer The UTF-8 is a high-reliability, 11kV (IEC-rated) / 10kV (domestic system equivalent) cast-resin current transformer engineered for precision metering and robust protection in medium-voltage substations and industrial power networks. Designed in strict accordance with IEC 61869-2 and GB/T 20840.2, this instrument transformer leverages advanced vacuum pressure impregnation (VPI) epoxy […] Read more »
Documents UTF-8 11kV Cast-Resin VT Transformer: IEC 61869-3 Compliant for Metering & Protection for voltage transformer Applicatio March 26, 2026 / May 2, 2026 by tianming Introduction to the UTF-8 Voltage Transformer The UTF-8 is a single-phase, cast-resin insulated voltage transformer (VT) designed for accurate voltage measurement and reliable protection signaling in medium-voltage power systems operating at 11kV (IEC standard) or 10kV (domestic Chinese system). Engineered in strict compliance with IEC 61869-3 and GB/T 20840.3, this instrument transformer leverages advanced vacuum […] Read more »
Documents For Substation Metering & Protection: UNKNOWN 11kV Cast-Resin Current Transformer per IEC 61869-2 for substation appl… March 25, 2026 / May 2, 2026 by tianming 11kV Cast-Resin Voltage Transformer JDJ-3 for Metering and Protection – IEC 61869-3 Standard Introduction to the JDJ-3 Voltage Transformer The JDJ-3 is a single-phase, indoor/outdoor-rated cast-resin voltage transformer (VT) engineered for precise voltage transformation in 11kV (IEC) or 10kV (domestic) medium-voltage distribution systems operating at nominal system voltages up to 12kV. Designed in strict accordance […] Read more »
Documents VT-10KV 11kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Metering and Protection for substation app… March 23, 2026 / May 2, 2026 by tianming 11kV Cast-Resin Voltage Transformer VT-10K for Metering and Protection – IEC 61869-3 Standard Introduction to the VT-10K Voltage Transformer The VT-10K is a single-phase, indoor/outdoor-rated cast-resin insulated voltage transformer engineered for precise voltage transformation in 11kV (IEC) / 10kV (domestic) medium-voltage networks. Designed per IEC 61869-3 and GB/T 20840.3, it steps down system voltages to […] Read more »
