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Modern electrical motors are available in many different forms, such as single phase motors, three-phase motors, brake motors, synchronous motors, asynchronous motors, special customised motors, two speed motors, three speed motors, and so on, all with their own performance and characteristics. For each type of motor there are many different mounting arrangements, for example foot mounting, flange mounting or combined foot and flange mounting. The cooling method can also differ very much, from …

Pursuant to the Machinery Directive 89/393/EEC, every machine must comply with the relevant directives and standards. Measures must be taken to keep the risk to persons below a tolerable extent. In the first step, the project planner performs a risk evaluation to EN 1050 "Risk Assessment". This must take into consideration the machine's ambient conditions for instance. Any overall risk must then be assessed. This risk assessment must be conducted in such a form as to allow documen …

Problems Created by Harmonics Excessive heating and failure of capacitors & capacitor fuses, Transformers, electric motors, fluorescent lighting ballasts, etc. Nuisance tripping of circuit breaker or blown fuses Presence of the third harmonic & multiples of the 3rd harmonic in neutral grounding systems may require the derating of neutral conductors Noise from harmonics that lead to erroneous operation of control system components Damage to sensitive electronic equipment Electroni …

Principal Components of a 3-Phase Capacitor The principal components of a 3-phase ABB capacitor include: Sequential Protection System: Self-Healing Capacitor Elements One or more self-healing capacitor elements are installed for each phase. These elements are connected in Y or Δ. In case of dielectric breakdown, the fault is cleared by evaporation of the metalized layer around the breakdown with negligible loss of capacitance and continued operation of the capacitor! Internally Prote …