A C / D C Motor to calculate wire weight

[Sanjay Shaw]

Dear Sir,

Please find attached some images which is required to understand to calculate the coil weight

 

In order to get all all we have to know 1st following which is generally known as winding data of electrical design. say

 

Motor Rewind Data

The following motor rewind data is furnished in the event it is necessary to rewind the stator.

a. Stator:

(1) Number of poles ..............2

(2) Number of coils ...............36

(3) Number of lots ..................36

(4) Turns per coil....................13 turns of (2) No. 19 AWG conductors in parallel

(5) Coil span ...........................1-14

(6) Wire size ..........................No. 19 AWG

(7) Type of wire ......................Type T, heavy Polythermalex coated round copper magnet wire per MIL-W-

583A

Winding connection ..........1 circuit WYE

b. Insulation materials:

(1) Slot cell .............................5-5-5 DMD-100 (36 pcs.)

(2) Slot phase separator ..........3-3-3 DMD-100 (36 pcs.)

(3) Slot wedge .........................5-5-5 DMD-100 (36 pcs.)

(4) Phase group separator .......0.007 Polyester glass sheet (12 pcs.)

(5) Dipping compound ............Type AN, grade CB, clear baking varnish, per MIL- V-1137A P. D. George No.

2106, class F.

 

Further we required for the datasheet of the winding wire which we will get from Indian wire manufacturer website

 

In next we should discuss the matter of the winding extention.

 

Limitation of the local repairer who use to rewing the coil on weight basis ignoring the ampare turn and it's effects of risk analysis of insurance.

 

with regards

Sanjay Shaw

 

 

[ASAR]

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[Sanjay Shaw]

Dear Sir

Please find attached the specification data sheet of the winding wire in order to calculate the weight.

I am re attaching the some images again to enable to calculate the same.

Member are requested to create an excel sheet for calculation and which is to be uploaded in www.iiisla.org for uses of the same by members free of cost.

 

Motor Rewind Data

The following motor rewind data is furnished in the event it is necessary to rewind the stator.

a. Stator:

(1) Number of poles ..............2

(2) Number of coils ...............36

(3) Number of lots ..................36

(4) Turns per coil....................13 turns of (2) No. 19 AWG conductors in parallel

(5) Coil span ...........................1-14

(6) Wire size ..........................No. 19 AWG

(7) Type of wire ......................Type T, heavy Polythermalex coated round copper magnet wire per MIL-W-

583A

Winding connection ..........1 circuit WYE

b. Insulation materials:

(1) Slot cell .............................5-5-5 DMD-100 (36 pcs.)

(2) Slot phase separator ..........3-3-3 DMD-100 (36 pcs.)

(3) Slot wedge .........................5-5-5 DMD-100 (36 pcs.)

(4) Phase group separator .......0.007 Polyester glass sheet (12 pcs.)

(5) Dipping compound ............Type AN, grade CB, clear baking varnish, per MIL- V-1137A P. D. George No.

2106, class F.

 

in next mail we will generate topics : Improper rewinding Vs Nature of damages appeared.

 

 

We have observed that most of the repairer are not following the proper ampare turn and extension parts of the stator / rotor coil winding which cause improper fan out test reading and life of the winding which can be explore by minute examining the nature of damages on the coil winding.

With REgards

Sanjay Shaw