Documents JDZW-20 21kV Cast-Resin Voltage Transformer for Metering & Protection: IEC 61869-3 Compliant Application Scenarios June 6, 2026 / April 24, 2026 by tianming Introduction The JDZW-20 21kV voltage transformer is a cast-resin insulated instrument transformer designed for accurate voltage measurement and reliable protection functions in medium-voltage power systems. Compliant with international standard IEC 61869-3 and domestic Chinese standard GB/T 20840, this device serves as a critical interface between high-voltage primary circuits and secondary instrumentation or protective relays. The […] Read more »
Documents JLSW3-10 11kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Metering & Protection for substation appl… June 6, 2026 / May 2, 2026 by tianming IEC 61869-3 Certified 11kV Voltage Transformer UNKNOWN for Metering & Protection Applications Introduction to the UNKNOWN Voltage Transformer The UNKNOWN 11kV cast-resin voltage transformer (VT) is engineered for high-reliability metering and protective relaying in medium-voltage power systems operating at nominal system voltages of 11kV (IEC standard) or 10kV (domestic Chinese grid equivalent). This instrument transformer […] Read more »
Documents JDZW-35K 33kV Cast-Resin Voltage Transformer for Metering & Protection: IEC 61869-3 Compliant Application Scenarios June 5, 2026 / April 24, 2026 by tianming Introduction The JDZW-35K voltage transformer is a cast-resin insulated instrument transformer designed for accurate voltage measurement and reliable protective relay operation in medium-voltage power systems. Although commonly referenced as a 35 kV device under Chinese domestic standards (GB/T 20840), its primary rated voltage aligns with the international standard of 33 kV as defined by IEC […] Read more »
Documents SEL-351 11kV Cast-Resin Current Transformer for Substation Metering & Protection – IEC 61869-2 Compliant June 5, 2026 / May 2, 2026 by tianming For Substation Metering & Protection: ZWJ-12 11kV Cast-Resin Voltage Transformer per IEC 61869-3 Introduction to the ZWJ-12 Voltage Transformer The ZWJ-12 is a single-phase, indoor/outdoor-rated cast-resin voltage transformer (VT) engineered for precise voltage transformation in 11kV (IEC nominal) or 10kV (domestic system) medium-voltage networks. Designed for integration into ring main units (RMUs), switchgear panels, and […] Read more »
Documents CT/PT Selection for Marine & Offshore Platforms: Corrosion, Vibration & IEC 60092 Guide (IEC 61869-2/3, IEEE C57.13) June 5, 2026 by tianming CT/PT Selection for Marine & Offshore Platforms: Corrosion, Vibration & IEC 60092 Guide (IEC 61869-2/3, IEEE C57.13) Meta Description: Comprehensive guide on current transformer (CT) and potential transformer (PT) selection for marine and offshore platform applications. Covers corrosion resistance, vibration tolerance, IEC 60092 compliance, and practical engineering examples for ships, FPSO, and offshore wind substations. […] Read more »
Documents Substation & Industrial 11kV Cast-Resin Voltage Transformer INE-2 Compliant with IEC 61869-3 June 5, 2026 / April 24, 2026 by tianming INE-2 11kV Cast-Resin Voltage Transformer – IEC 61869-3 Compliant Application Scenarios INE-2 11kV Cast-Resin Voltage Transformer – Application Scenarios per IEC 61869-3 Introduction The INE-2 11kV voltage transformer is a cast-resin insulated instrument transformer designed in strict accordance with the international standard IEC 61869-3. This device serves as a critical component in medium-voltage (MV) electrical […] Read more »
Documents Reliable 33kV Cast-Resin Voltage Transformer JDZX9-35 for Substation & Grid Compliance with IEC 61869-3 June 4, 2026 / April 24, 2026 by tianming JDZX9-35 33kV Cast-Resin Voltage Transformer – Application Scenarios per IEC 61869-3 JDZX9-35 33kV Cast-Resin Voltage Transformer – Application Scenarios per IEC 61869-3 Introduction The JDZX9-35 33kV voltage transformer is a cast-resin insulated instrument transformer engineered for precise voltage measurement and protection in medium-voltage (MV) power systems operating at 33 kV nominal system voltage, as defined […] Read more »
Documents CT/PT Selection for Data Center & Critical Power Applications: Reliability, Harmonics & UPS Integration (IEC 61869-2/3, IEEE C57.13) June 4, 2026 by tianming CT/PT Selection for Data Center & Critical Power Applications: Reliability, Harmonics & UPS Integration (IEC 61869-2/3, IEEE C57.13) Meta Description: Comprehensive guide on current transformer (CT) and potential transformer (PT) selection for data centers and critical power applications. Covers reliability, harmonic mitigation, UPS integration, backup power, and compliance with IEC 61869-2/3 and IEEE C57.13, including […] Read more »
Documents Grid 33kV JDZW-35R Cast-Resin Voltage Transformer Compliant with IEC 61869-3 for Substation & Industrial Use June 4, 2026 / April 24, 2026 by tianming JDZW-35R 33kV Cast-Resin Voltage Transformer – Application Scenarios per IEC 61869-3 JDZW-35R 33kV Cast-Resin Voltage Transformer – Application Scenarios per IEC 61869-3 Introduction The JDZW-35R is a cast-resin insulated voltage transformer (VT) designed for operation at the standardized IEC system voltage of 33 kV. Compliant with IEC 61869-3:2011 (“Instrument transformers – Part 3: Additional requirements […] Read more »
Documents Industrial JDZ9-35 33kV Cast-Resin Voltage Transformer Compliant with IEC 61869-3 for Substation & Grid Applications June 3, 2026 / April 24, 2026 by tianming JDZ9-33kV Cast-Resin Voltage Transformer – IEC 61869-3 Compliant Applications JDZ9-33kV Cast-Resin Voltage Transformer – Application Scenarios per IEC 61869-3 Introduction The JDZ9-33kV cast-resin voltage transformer is a precision instrument designed for accurate voltage measurement and protection in medium-voltage power systems operating at the IEC-standardized nominal voltage of 33 kV. Engineered in strict compliance with IEC […] Read more »
Documents For CT-35KV 33kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Substation & Grid Use June 3, 2026 / April 24, 2026 by tianming CT-33kV 33kV Current Transformer (Cast-Resin) – IEC 61869-2 Compliant Application Scenarios CT-33kV 33kV Cast-Resin Current Transformer: Application Scenarios per IEC 61869-2 Introduction The CT-33kV is a cast-resin insulated current transformer designed for use in medium-voltage electrical networks operating at the standardized IEC voltage level of 33kV. This device complies fully with IEC 61869-2, the international […] Read more »
Documents CT/PT Selection for Electric Arc Furnace (EAF) & Traction Systems: Harmonics, Fluctuation & Protection Guide (IEC 61869-2/3, IEEE C57.13) June 3, 2026 by tianming CT/PT Selection for Electric Arc Furnace (EAF) & Traction Systems: Harmonics, Fluctuation & Protection Guide (IEC 61869-2/3, IEEE C57.13) Meta Description: Comprehensive guide on current transformer (CT) and potential transformer (PT) selection for Electric Arc Furnace (EAF) and railway traction systems. Covers harmonic distortion, voltage fluctuation, fast transient response, and compliance with IEC 61869-2/3 and […] Read more »
