Requirement analysis

1、 Customer Products

Single and three-phase asynchronous motors, AC permanent magnet motors for finished deep well pumps

2、 Customer demand

Thirteen station insulation testing system

1. Test item: Insulation

2. Thirteen workstations

3. The motor has four lead wires, red, black, yellow, and green. The green wire is connected to the housing, and the red, black, and yellow wires are connected to the stator. During testing, the red, black, and yellow wires are twisted together, which means that one motor outputs only two wires. There are a total of thirteen motors, which means that they output 26 wires

4. Testing process: In a sealed container, let all thirteen motors be submerged in water at a high voltage of 2.5MPa. After soaking for 2 minutes, test the insulation in sequence. If the insulation resistance value is greater than 200M Ω, it is judged as qualified, and if it is lower than 200M Ω, it is judged as unqualified. After soaking for 2 minutes, test the contract at each workstation in sequence and judge it as PASS. If it is judged as unqualified, it is judged as FAIL. The qualified display is green, and the unqualified display is red

5. After the completion of the customer control part (i.e. soaking for 2 minutes), output a signal to us and we will start testing. After all thirteen workstations are completed, output a signal to the customer so that they can proceed to the next action

3、 Customer product parameters

Motor stator power 0.37KW-11KW

4、 Electrical

5、 Mechanical

6、 Software functional testing

Safety testing

isolation