a-The slots insulation must be done with minumum F level persband. Presband edges cutted 1cm outside the slots and layed in the slots where we use glass or silicone tubing as insulation to support the coils which helps to give strength against magnetic loads.
b-It is very important to choose the right wire fort he windings. We use such a wire which has the resistance to 210 °C and corrosions free "Theic Polyesterimide and covered Polyamide-imide" enamel grade 2 level. The coil needs special order for purcaising and most of the time we deliver from abroad.
c- The tools for preparing coils must be suitable fort he requested products.
d- We use polyester guide while putting coils in the slots avoid demages on core.
e- we use nomex presband between two coils to give strengt for insulation of two coils which has different voltage level.
f- In case the motors are running via a frequency converter, the poles of coils head are isolated with nomex presband for insulation of the slot’s outputs.
g- We formed H or F class fiber plates at the slots to cover coils to avoid electromagnetic effects.
h- We use silk or glass band at coil top sor polyglass band for high torque machines.
i-Parellezing or serial laying coils, we clean enamels from the wires by special hand tools.
j- The connection of coils are made by silver welding using cupper ring.
k- The cables fort he poles output is prepared according to the power of motors supporting. with H Class silicone tubing
l- We install RTU heat sensors to the stator windings at all poles and cables are silicone tubed to the terminals.
m- If the motor is slip ringed, we additionaly use polyglass band for coils head to give extra strength against centrifugal force.
n- The windins gets dry at the oven for 15 hours at 130 °C degree.
o-After drying, while the windings are hot, we varnished them with maximum spread over them.
p-After varnishing, we dry the windings at the oven for 15 hours at 130 °C degree.
r-We clean up residues of windings
s- We install special dehumidifier heaters at the windings which is fixed with F class polyglass band.