Burn down of blowdown pump electric machinery a few kinds of case study

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Burn-up of blowdown pump electric machinery is main a few reasons are: Be short of photograph, overload, v/LIT all over the ground, alternate with, ground is attacked
1. is short of
Reason:
Because power source is short of,be commonly (one photograph not power supply or power supply voltage are insufficient) or dot of contact of the contactor in circuit did not close, lead disconnects even contact, become loose or contact the reason such as an oxidation to cause.
Feature:
There are one photograph or two-phase in winding (4 class) blacken entirely, coil attaint is symmetrical, it is regularly be short of.
2. overload
Reason:
Cross electric current for long to move for electric machinery commonly, overheat moves, be started often or apply the brake, wiring mistake also is brought about (trigonometry receives Cheng Xing) .
Feature:
Winding blackens entirely color, upright ministry is plunged into belt become angry and become fragile to rupture even.
3. is v/LIT all over the ground
Reason:
Electric machinery makes the enamel-insulated wire that the process causes defeat a skin to wait.
Feature:
Winding is local burn, the circumstance with electric machinery normally clean lumen, be in scamper to nod only.
4. alternate with
Reason:
Alternate with insulating paper is had no put reach the designated position, or alternate with paper (bushing) damaged.
Feature:
Between adjacent of photograph of electric machinery two-phase burn down.
5. ground is attacked
Reason:
Span climbs to leave between coil and upright lid baseplate insufficient.
Feature:
Coil and end are built or end is built between, two place all have burn black mark.
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