Name explains two

 1,high voltage test pen:used to check the high voltage distribution network equipment,overhead lines,cable whether electric tools.2,grounding line,to the surprise appearance has power equipment and line voltage single phase ac motor to ensure staff's important tool.According to the provisions of the enterprise in ground wire must be at least 25 mm 2 bare copper cord.3,sign:used to warn people not close to the equipment and charged part,instructions for personnel work,remind to take safety precautions,and banning trace a device or a period of circuit switching power on board.Can be divided into the warning classes,allowing,prompt and banned the and so on.4,covering bar:to prevent staff had no intention of encounter charged equipment parts and equipment screen protector,temporarily hide column and permanent column two.5,insulating rod:also called the www.facebook.com/dongfeng.motor g rods,insulating rod,operation,etc.Insulating rods by working head,insulation and handle three parts.

It in a closed or open high-voltage isolating switch,portable earthing line installation,as well as the measurement and test.Step 6,:if the ground horizontal distance of 0.8 m has a potential difference between two points,when the two feet of human exposure to the two points,in the human body will withstand voltage,the voltage is called the step voltage.The biggest step in from the ground of the grounding body between the grounding body and horizontal distance of 0.8 m.Is 7,phase sequence,phase sequence,is an alternating current instantaneous value changes from negative to positive after zero order in turn.8,the power grid,power grid is part of the power system,it is made of all kinds of transformer substations (by) and different voltage grade of transmission,power 5kw permanent magnet generator distribution lines connected to form a unified network.9,electric power system,power system is a part of power system,it is composed of power plant generators and power distribution equipment,step-up and step-down substation,transmission and distribution lines and the users of electricity equipment.10,power system,power plants,substation mini electric motor and power users of electricity equipment,and its to the power grid and the thermal network (or hydraulic) system connected is called dynamic system as a whole.

Submersible pump motor repair 10 points for attention

 Mine submersible pump motor electromagnetic part and ordinary motor basic same,therefore,electromagnetic failure and repair,but due to the particularity of explosion-proof motor.In carries on the repair or reconstruction,it shall comply with the following provisions: The relevant personnel should understand,repair units and the relevant national laws and regulations,explosion-proof standards for repair work and the relevant provisions of the qualified products.Second,the unit should have for explosion-proof motor repair process equipment and the necessary inspection and test apparatus.Before three,maintenance,should prepare the necessary technical data.Four,commissioning before the motor repair,check the cable entry,relay protection and wiring system,to ensure that the company is still in good condition and conform to the requirement of explosion protection.Five,to engage in explosion-proof motor maintenance personnel should undertake the necessary training.After six,after inspection and acceptance of the inspection items,is made by authorization of the explosion-proof test unit or recognition,can be in repair units; 

Think it is necessary to project still explosion-proof test unit by explosion-proof inspection unit.After repair,explosion-proof motor should be to use the department to provide the following documents: 1) fault inspection;2) repair work instructions;3) Motor vehicle replacement and repair parts catalog;4) inspection and test results;5) repair certificate.Eight,are not allowed to repair the piano pieces 1) by the size of glass,plastic or other unstable parts made of materials;2) fasteners;3) the manufacturer or explosion-proof code that can't repair parts,such as encapsulation component.A sign of nine,after the repair will not affect the explosion-proof performance of repair,after repair without repair.Ten,the flame-proof certification after after repair motor repair the repair unit inspection department shall issue certificate of approval.Described above shall include at least by repairing the name,type,specification,water pump explosion-proof motor logo,the name of the class units and its approval certificate number,explosion-proof certificate number,date of repair,etc.The standard code for GB3836.13-1997 after the repair.Signs must be norm,durable,and resistant to chemical corrosion.Signs should be metal materials,commonly permanently fixed on the motor after the repair,repair again,after repair,the previous repair sign shall be removed.