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2026-7-15How to determine if the Hall Effect Sensor is damaged?
I. Basic Appearance and Circuit Troubleshooting 1. Appearance Inspection: Check the sensor housing for mechanical damage or deformation, and check the terminals for oxidation, loosening, or corrosion. -
2026-7-13How to wire a current transformer
I. Basic Wiring Rules 1. Primary Side Wiring: Power is connected from terminal P1 (or L1) of the current transformer and exited from terminal P2 (or L2), directly connected in series in the main circu -
2026-7-10
What are some methods to dry current transformers?
What are some methods for drying current transformers? I. Simple On-Site Drying (Slight/Moderate Moisture, No Factory Return Required) Suitable for on-site drying of small and medium-sized current tra -
2026-7-08
What are the methods to deal with a current transformer that has become sever...
I. Mild to Severe Moisture Insulation (Insulation Resistance 50~100MΩ, Dielectric Loss 1%~2%): On-site Drying Treatment Suitable for dry-type and oil-paper insulated instrument transformers. No factor -
2026-7-06What methods can be used to test whether a current transformer is qualified?
I. Simple On-Site Testing (No Professional Testing Equipment Required, Quick Initial Screening) Suitable for quick on-site troubleshooting of common non-conforming issues: 1. Appearance and Nameplate -
2026-7-03What are the common reasons for current transformer failure?
I. Product Defects at the Factory (Common in New Equipment) 1. Core Winding Defects: Substandard core material or incorrect number of turns in the winding directly leads to excessive turns ratio error -
2026-7-01What tests are needed after the current transformer is installed?
I. Basic Insulation and Parameter Testing (Mandatory Acceptance Test) These are mandatory items required by law after high-voltage electrical installation: 1. Insulation Resistance Measurement: Test w -
2026-6-29What are the correct installation steps for a current transformer?
I. Pre-construction Preparations (Essential for Power Deactivation) 1. Obtain a formal power outage work permit, verify the voltage in the work area, install grounding wires, confirm that the primary -
2026-6-26What are the consequences of incorrect installation of current transformers?
Different types of installation errors have vastly different severity consequences, ranging from minor metering deviations to serious safety accidents. The specific categories are as follows: 🚨 Most -
2026-6-24What are the common current transformer installation errors?
I. Wiring Errors 1. Secondary Side Open Circuit Without Short-Circuit: This is the most dangerous installation error. Forgetting to connect the secondary instrument after removing the temporary short- -
2026-6-22How to Replace an Unsuitable Current Transformer
I. Preliminary Preparations (Power Outage Required) 1. Obtain a power outage work permit, verify the voltage in the maintenance area, confirm that all primary and secondary circuits are de-energized, -
2026-6-19What are some common reasons why current transformers are unsuitable?
I. Selection Errors: Mismatched selection is the primary cause, accounting for over half of all cases. Selection errors are the leading reason for unsuitable current transformers, with the core issue