Morteng Electrical Condition Optimisation: Precise Detection and Adjustment
(1) Load Current Management
Regularly monitor motor operating current to ensure it remains within rated current limits over time, preventing overloads that cause sudden brush load spikes, accelerated wear, or excessive sparking. Utilise the motor's integrated current monitoring instrument for real-time tracking. Should frequent overloads occur, investigate load matching issues (e.g., mechanical jamming, load exceeding motor design capacity) and implement timely corrective measures.
(2) Balancing Morteng Brush Current Distribution
Employ infrared thermometers to measure temperatures across brush leads. Significant temperature variations typically indicate uneven current distribution.
When using clamp-on ammeters, operate under professional guidance (avoiding motor magnetic field interference zones) to directly measure branch currents per Morteng brush, quantifying imbalance severity.
Optimising Morteng Brush Selection: Matching Operating Conditions is Key
(i) Core Selection Principles
Base selection on actual operating conditions, collaborating with brush suppliers or motor manufacturers for customised solutions. Key reference parameters include current density, commutator peripheral speed, operating voltage, load characteristics, and environmental conditions.
(ii) Targeted Selection Approaches
Excessive sparking and difficult commutation: Prioritise brushes with superior commutation performance, such as carbon-graphite or electrographite-based materials. Their moderate resistivity effectively suppresses commutation sparking, reducing arc damage to commutators and brushes.
Excessive Brush Wear:
Select based on current density. For high-current-density applications, choose metal-graphite brushes. For standard conditions, opt for hard electrographite brushes to enhance wear resistance and service life.
Adaptation for special environments: In high-temperature conditions, employ graphite brushes bonded with heat-resistant resin; for corrosive environments, select brushes with anti-corrosion coatings or special materials to prevent material degradation and failure.
III. DC Motor Commutation Optimisation: Professional Adjustment and Maintenance
(I) Fine-tuning the Brush Holder Position
Under the guidance of qualified technicians, adjust the brush holder position to calibrate the neutral point, thereby reducing commutation sparking. Adjustments should involve small incremental movements of the brush holder. After each adjustment, conduct a test run to observe sparking changes until minimal sparking and smoothest operation are achieved.
Post time: Nov-13-2025
