How to connect the deep well submersible pump cable

Deep well submersible pumps are generally only lead the cable, the user also need to install another cable, so when the cable must pay attention to the correct method, or the use of submersible pumps have a great impact.
Connection method of deep well submersible pump
1, stripped of the pump cable outer jacket and the main insulation layer, exposed copper 35-40mm, will be close to the core part of the rubber repair into a cone, the core layer of the oxide layer polished clean and alcohol (preferably Hydrochloric acid) wipe the core and the insulation layer to be wrapped, the jacket layer and make it naturally dry.
2, connector
1) Power cable 2) Polyvinyl chloride tape 3) Self-adhesive butyl rubber tape 4) φ1mm copper wire 5) Solder 6) Lead cable
3, ready to 500W soldering iron, rosin, solder, lmm bare copper and insulation tape.
4, with bare copper wire evenly tied cable core, electric iron heating, infiltration tin, requiring penetration, infiltration uniform. Repair the flattened parts with a rasp (do not allow burrs and taps), and wipe the parts again with alcohol and dry them.
5, first with self-adhesive butyl tape semi-laminated three layers, and gradually extended to the outside of the core. Bandage must be stretched when the tape 200%, the outer layer of polyvinyl chloride adhesive tape with three layers, but also gradually extended to ensure that the dressing part of not less than 200mm.
6, three-core cable connector should be three joints in order to stagger a certain distance to prevent short circuit.
7, lead the cable for the double cable when the wiring method
1) After the cable is finished, the insulation resistance between the cable and the motor (without water) is not less than 150 megohms,
2) motor filled with water after another shake the motor winding insulation resistance should not be less than 40 megohm,
3) Power test test turn (no more than 2 seconds). Do a good job position mark,
4) began to go down: at the same time continue to shake off the insulation resistance to observe the changes in order to prevent the wall breaking cable insulation, if the degree of insulation dropped to 0.5 megawatts or less when the crew will be brought up to detect the cause. If there is no accident, down the well can be done through the steps described above boot test run.