Current transformer simulation: A Practical Guide for Substation and Plant Engineers
Current transformer simulation predicts ratio error, phase error and saturation so protection and metering accuracy can be verified before energisation.
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Leon Zhang sales consultant
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Category Test Instruments
Field testing depends on instruments that hold their calibration and produce a number worth writing into a report. This section covers the instruments themselves — hi-pot sets, insulation resistance testers, ground resistance testers, clamp meters, power quality analyzers, relay test sets and current transformer simulation — what each one measures, how the reading is interpreted against a standard or a previous result, and what to check before you trust it.
Sf6 gas: A Practical Guide for Substation and Plant Engineers
Insulating and arc-quenching in one volume, sf6 gas is also a regulated greenhouse gas; match the detector, analyzer and density gauge to the question asked.
Current Clamp Meter: Selection Guide, Key Specifications and Test Setup
A current clamp meter measures live current without breaking the circuit; this selection guide covers types, key specifications, true RMS and safe test setup.
Hi Pot: A Practical Guide for Substation and Plant Engineers
Hi pot testing stresses insulation out of service with an overvoltage and watches the leakage; this guide covers voltage selection, AC/DC/VLF choice and setup.
How to Test a Circuit Breaker: Step-by-Step for Field Engineers
How to test a circuit breaker step by step: prove dead, measure contacts and insulation, and prove the protection operates the breaker.
Ground Resistance Tester: Selection Guide, Key Specifications and Test Setup
How to choose a ground resistance tester by method, probe spacing and interference, and how to read soil resistivity and touch voltage limits.
Power Quality Analyzer: Selection Guide, Key Specifications and Test Setup
How to choose a power quality analyzer by class, channels and recording setup, and how to read harmonics, unbalance and events on a real supply.
Megohmmeter: Selection Guide, Key Specifications and Test Setup
How to choose a megohmmeter by test voltage and range, read the number after temperature correction, and set up insulation tests for motors and chillers.
Voltage Transformer: A Practical Guide for Substation and Plant Engineers
How a voltage transformer behaves under real burden, how IEC and IEEE accuracy notations differ, and the field tests that catch a defective unit before service.
Relay tester: Selection Guide, Key Specifications and Test Setup
Author: Baoding Houfeng Trading Co., Ltd. — Power Monitoring and Testing Equipment Team,supplying relay test sets and high voltage test instruments to utilities and EPC contractors since 2026Technical review: reviewed by the in-house power testing engineering team against IEC 60255-1:2022 and GB/T…