The braided cables make no difference with or without a mouse bungee, unless you place your bungee almost right over your hand, where the cable is fully suspended, which is really not optimal because you never know when you’re going to have to move just an inch more where you bungee won’t reach. Headphone cables are most commonly made of strands of very thin braided/twisted copper wires, as it is more flexible, better resists damage due to twisting/vibration, and has essentially the same conductivity as a single strand conductor. You can braid them and you may never know any different but that’s just bad practice IMO. It also adds cable length which is unnecessary weight. Inductance is created in twisted wires that can cancel out, or create undesired signals/currents. This is due to the most well-known benefit of Litz Wire – a reduction of A.C losses.
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![motor winding insulation motor winding insulation](http://30j.1de.mywebsitetransfer.com/wp-content/uploads/2020/05/iStock_59053856_LARGE.jpg)
Litz Wire consists of a number of individually insulated magnet wires twisted or braided into a uniform pattern with the primary benefit of reducing A.C.
#Motor winding insulation skin
The wire is designed to reduce the skin effect and proximity effect losses in conductors used at frequencies up to about 1 MHz. Litz wire is a particular type of multistrand wire or cable used in electronics to carry alternating current (AC) at radio frequencies. What should be the insulation resistance of motor?Ī general rule-of-thumb is 10 Megohm or more. In this method, the windings will be connected to electrical wires on a rotating table. This is among the most common insulation methods used for motor windings. Normally electrical motor insulation can be effected by many factors.Below are several common factors that effected the insulation failures.ġ) Contamination : A chemical reaction or deposit on the windings that cause deterioration of the varnish insulation.Ģ) Mechanical : Some of movement or vibration between the winding coil or the motor body can wear the insulation system.ģ) Over voltage spikes : High voltage surges or spikes can cause from VFD without filter,inrush switching or lighting.Ĥ) Early thermal aging : High temperatures or excessive causing premature failure such as varnish insulation damage or weak.ĥ) Normal thermal aging : The slow deterioration of the insulation over the windings natural life through normal operation.Ħ) Moisture : If the environment condition so bad with high humidity and moisture,it can generated water into the winding and can cause the rusty and short-circuit.ħ) Dust / dirty : The dust accumulated at winding surface or armature day by day.This can cause a winding slowly overheat and in the end it can cause the winding insulation failed or damage due to high heat. The important things is we must know the root cause for insulation failures because we can prevent it from happened.įrom discussion and technical study,the most electrical insulation failures are caused by a combination of the voltage spikes that occur at start up and normal deterioration.
![motor winding insulation motor winding insulation](https://m.nide-auto.com/uploads/202030885/f-grade-dm-6644-electric-motor-winding37127837780.jpg)
What is the insulation of electrical motor?įor more protection,normally all winding cover by insulation varnish. Typically for induction motor insulation is the slot of paper to protect between cooper and ground surface.For phase to phase insulation normally used sheet of insulation paper laid between phase. It consists of the groundwall insulation and turn to turn insulation. Basically electrical motor have a phase to phase winding coil around armature to created a magnetic field.To avoid shortage between phase to phase winding,the insulation systems needed.