Documents CT Secondary Circuit Troubleshooting Guide: Open Circuit, Short Circuit & Grounding Faults (IEEE C57.13, IEC 61869-2) May 26, 2026 by tianming CT Secondary Circuit Troubleshooting Guide: Open Circuit, Short Circuit & Grounding Faults (IEEE C57.13, IEC 61869-2) Meta Description: Comprehensive guide on current transformer (CT) secondary circuit troubleshooting. Covers open circuit, short circuit, grounding faults, polarity errors, and burden issues. Includes step-by-step diagnostic procedures, safety precautions, and compliance with IEEE C57.13 and IEC 61869-2 for MV/HV […] Read more »
Documents Indoor ZW-10 11kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Substation & Industrial Use May 25, 2026 / April 24, 2026 by tianming ZW-10 11kV Cast-Resin Current Transformer – IEC 61869-2 Compliant Application Scenarios ZW-10 11kV Cast-Resin Current Transformer: Application Scenarios Under IEC 61869-2 Introduction The ZW-10 11kV cast-resin current transformer (CT) is engineered to meet the stringent requirements of IEC 61869-2, the international standard governing instrument transformers for alternating current. Designed specifically for use in 11kV medium-voltage […] Read more »
Documents Cast-Resin CT-10KV 11kV Current Transformer | IEC 61869-2 Certified for Substation & Industrial Use May 25, 2026 / April 24, 2026 by tianming CT-10KV 11kV Cast-Resin Current Transformer – IEC 61869-2 Compliant Applications CT-10KV 11kV Cast-Resin Current Transformer – Application Scenarios Under IEC 61869-2 Introduction The CT-10KV 11kV cast-resin current transformer is engineered to meet the stringent requirements of the international standard IEC 61869-2 for instrument transformers. Designed specifically for use in 11kV (IEC-rated) medium-voltage power systems, this […] Read more »
Documents PT Selection for Metering & Revenue Applications: Accuracy, Burden & Compliance Guide (IEC 61869-3, ANSI C57.13) May 25, 2026 by tianming PT Selection for Metering & Revenue Applications: Accuracy, Burden & Compliance Guide (IEC 61869-3, ANSI C57.13) Meta Description: Comprehensive guide on potential transformer (PT) selection for metering and revenue applications. Covers accuracy classes (0.15, 0.3, 0.6), burden calculation, compliance with IEC 61869-3 and ANSI C57.13, and practical engineering examples for utility revenue metering and energy […] Read more »
Documents LJ-ZW32-10 11kV Cast-Resin Current Transformer Compliant with IEC 61869-2 for Power Systems for substation applications May 24, 2026 / April 29, 2026 by tianming JDZ-10 11kV Cast-Resin Voltage Transformer – IEC 61869-3 Compliant Applications JDZ-10 11kV Cast-Resin Voltage Transformer – Application Scenarios under IEC 61869-3 Introduction The JDZ-10 11kV cast-resin voltage transformer is a precision instrument designed for accurate voltage measurement and protection in medium-voltage (MV) electrical distribution networks operating at the standardized IEC system voltage of 11kV. Compliant […] Read more »
Documents JDZW-35 11kV Cast-Resin Current Transformer for Substation Metering & Protection – IEC 61869-2 Compliant May 24, 2026 / May 2, 2026 by tianming 11kV Cast-Resin Voltage Transformer JDZW-35R for Metering and Protection – IEC 61869-3 Standard Introduction to the JDZW-35R Voltage Transformer The JDZW-35R is a single-phase, 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). As a […] Read more »
Documents SZF-3 11kV Cast-Resin Voltage Transformer: IEC 61869-Compliant for Metering & Protection May 24, 2026 / April 22, 2026 by tianming Introduction The SZF-3 voltage transformer is a critical component in medium-voltage power systems, specifically engineered for reliable and accurate voltage measurement and protection in 10kV networks. As part of the resin-cast, indoor-type instrument transformer family, the SZF-3 offers excellent insulation performance, compact design, and long-term operational stability under varying electrical and environmental conditions. Its primary […] Read more »
Documents CT for Differential Protection: Selection, Matching & Saturation Analysis (IEC 61869-2, IEEE C37.112) May 24, 2026 by tianming CT for Differential Protection: Selection, Matching & Saturation Analysis (IEC 61869-2, IEEE C37.112) Meta Description: Comprehensive guide on current transformer (CT) selection, matching, and saturation analysis for differential protection of transformers, busbars, and generators. Covers IEC 61869-2 and IEEE C37.112 compliance, including knee-point voltage, ratio matching, transient performance, and practical engineering examples. 1. Introduction Differential […] Read more »
Documents Selecting Cast-Resin SZV-10R VTs for 10kV Systems: Indoor/Outdoor Accuracy Class Guidance May 23, 2026 / April 22, 2026 by tianming Introduction The SZV-10R 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 accordance with international standards such as IEC 61869 and GB/T 20840, this instrument transformer ensures safe isolation between high-voltage primary circuits and low-voltage secondary instrumentation […] Read more »
Documents SZW-10K 11kV Cast-Resin VT: IEC 61869-3 Compliant for Metering & Protection | Outdoor/Indoor Use May 23, 2026 / April 22, 2026 by tianming Introduction The SZW-10K 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 electromagnetic voltage transformer family, the SZW-10K converts high primary system voltages to standardized lower secondary voltages—typically 100 V or 110 V—that […] Read more »
Documents MV Cable Jointing & Termination Practices: Cold-Shrink, Heat-Shrink & Resin Guide (IEC 60840, IEEE 400) May 23, 2026 by tianming MV Cable Jointing & Termination Practices: Cold-Shrink, Heat-Shrink & Resin Guide (IEC 60840, IEEE 400) Meta Description: Comprehensive guide on medium-voltage (MV) cable jointing and termination practices. Covers cold-shrink, heat-shrink, and resin kits, compliance with IEC 60840 and IEEE 400, and includes step-by-step procedures, testing requirements, and troubleshooting for XLPE, EPR, and PILC cables in […] Read more »
Documents 21kV Cast-Resin Voltage Transformer JLS-20K for Metering and Protection – IEC 61869-3 Standard for voltage transformer A May 23, 2026 / May 2, 2026 by tianming 21kV Cast-Resin Voltage Transformer JLS-20K for Metering and Protection – IEC 61869-3 Standard Introduction to the JLS-20K Voltage Transformer The JLS-20K is a single-phase, indoor/outdoor-rated cast-resin voltage transformer (VT) engineered for precise voltage transformation in medium-voltage (MV) power systems operating at a nominal system voltage of 20 kV, with an IEC-standard rated primary voltage of […] Read more »
