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2026-3-04How to troubleshoot poor secondary grounding of a current transformer?
I. Preliminary Visual Inspection (On-site visual inspection) Start with the most basic physical connections: Confirm that the secondary terminal S2 (or K2) is connected to the yellow-green grounding w -
2026-3-02What are the consequences of poor secondary grounding of a current transformer?
I. High-voltage intrusion, threatening personal and equipment safety When the insulation between the primary and secondary sides breaks down due to aging, moisture, or overvoltage, high voltage (up to -
2026-2-27How to check if the secondary side grounding of a current transformer is good?
I. Appearance and Wiring Inspection (Preliminary Check) First, conduct a visual inspection to confirm that the basic wiring meets the requirements: Confirm that the secondary circuit has a grounding p -
2026-2-25How to operate the secondary side grounding of a current transformer?
I. Core Operating Principles: Single-point grounding only Single-point grounding is mandatory: The secondary circuit of a current transformer must have only one grounding point to avoid forming a clos -
2026-2-23What are some methods for drying damp current transformers?
I. Vacuum Hot Oil Circulation Method (Recommended First Choice) This method combines the advantages of vacuum dehumidification and hot oil heat transfer. It is suitable for oil-immersed capacitive cur -
2026-2-20What tests are mandatory after installing a current transformer?
I. Insulation Resistance Test – The First Line of Defense for Safe Operation This is a fundamental test before commissioning any electrical equipment, used to determine the quality of insulation -
2026-2-18Can a Hall sensor be repaired after it's damaged?
I. Situations where repair is possible (limited applicability) 1. Broken lead or poor contact: If the external lead of the Hall sensor is broken, the plug is loose, or the solder joint is faulty, it c -
2026-2-16What are the consequences of a damaged Hall effect sensor?
I. Motor-related equipment: Complete damage to power and control Hall effect sensors in brushless motors are responsible for detecting rotor position and are crucial for accurate commutation. Damage t -
2026-2-13How to determine if a Hall Effect Sensor is damaged?
I. Observe abnormal equipment operation (preliminary judgment) When a Hall sensor is damaged, it is often accompanied by the following typical symptoms: Difficulty or inability to start the motor: The -
2026-2-11
What causes Hall effect sensor malfunction?
I. Power Supply Issues Abnormal Voltage: Voltage that is too high or too low can cause component burnout or aging. Current Surge: Excessive drive current or frequency can cause overheating. II. Enviro -
2026-2-09
What are the symptoms of a damaged Hall sensor?
I. Vehicle-related symptoms 1. Unstable engine operation Idle vibration, inconsistent power output during acceleration. Example: When the Hall sensor in an electric vehicle's motor malfunctions, t -
2026-2-06
What happens when a Hall effect sensor reaches the end of its lifespan?
I. Typical Manifestations of Performance Degradation 1. Decreased Measurement Accuracy The error may increase from ±0.1%FS to over ±0.5%FS and cannot be corrected through calibration. Ex