Adopt vertical racks, cabinets, modular design gear reduction motor will be used, function space clear, strong and weak electric isolation, maintenance is convenient. Dc motor, dc generator units rated power is 1.5 KW (using thyristor controlled rectifier voltage regulating speed). Deputy rated power 300 w dc motor unit (using H bridge VDMOS tube PWM regulating speed). Equipped with computer control interface, can be a PC or microcontroller digital regulator control or full digital dc motor control system experiment.
The dc resistance of the motor should be in the condition of motor cold measurement, after the operation of motor winding directly measuring dc resistance of the resistance than the cold under the direct current resistance value is large, so suggest users on dc resistance measurement of motor winding is measured with a thermometer, qualified core temperature and then measure the dc resistance is necessary.
The purpose of measuring dc resistance of the motor
The dc resistance of asynchronous motor, small geared motors including the stator winding, wound rotor motor rotor winding dc resistance and start the rheostat, the purpose is to check whether there is any break on winding turn-to-turn short circuit, and the welding part of the presence of virtual welding or soldering with and without the phenomenon such as poor contact, contact.
What are the specific measurements
If there are three line side winding motor, respectively brushless gear motor to measure L1, L2, L2, L3 and L1 and L3 winding dc resistance.
Six to qualify for the motor winding to measure U1, U2, V1, V2, W1 and W2 dc resistance.
Method of measurement
Choose ZZC - 10 a dc resistance tester, it USES a four-wire measurement method can quickly measuring transformer material, welding, loose, break the fault, such as insert tester for the red and black plug tester, test line, respectively, on the other side of the clip into the winding of L1 and L2, L2, L3 and L1 and L3, note that L1 and L2 as a group, and then choose the test current in a dc resistance tester, test current choose according to the capacity of generator, usually for 5 a current, and then start testing.
Test shows the charging current status bar, in the process of charging is completed according to test results, the real dc resistance of the resistance for the motor.
Our News
