what is pdma testing for electric motors?
530228
PdMA – Predictive Motor Analysis. PdMA (Predictive Maintenance) is a sophisticated system of trending the condition of your critical machinery. The MCEMax can perform multiple tests within each of these fault zones to accurately diagnose the condition of the machine and trend any degradation and future potential issues ...
493530
LCR meters are typically used to measure a range of parameters on magnetics, such as impedance, inductance and resistance This is achieved by applying a fixed voltage at a chosen frequency and then measuring a the actual voltage across the part under test b the actual current flowing through the part under test.
441609
['Unplug the CKP sensor electrical connector.', 'Set your digital multimeter to DC voltage scale using a low range.', "Turn the ignition key to the On position, but don't start the engine.", 'Touch the DMM black lead to ground.']
207610
The principle of operation of a synchronous motor can be understood by considering the stator windings to be connected to a three-phase alternating-current supply. The effect of the stator current is to establish a magnetic field rotating at 120 f/p revolutions per minute for a frequency of f hertz and for p poles.
572328
All three supply power to motors, although switchgear and PDC-fed motors are obviously higher-voltage, larger motors. ... Switchgears are higher voltage than PDCs, and supply power to the transformers which feed the PDCs.
1167027
Single phasing is a power supply-related electrical fault in case of an induction motor. It occurs when one of the 3 phase circuits in a three-phase motor is opened; hence the remaining circuits carry excess current.
976218
You can do it yourself using a voltmeter or battery tester, or bring it to AutoZone to be tested for free.
825572
The National Electrical Manufacturers Association (NEMA) defines standards used in North America for various grades of electrical enclosures typically used in industrial applications. Each is rated to protect against personal access to hazardous parts, and additional type-dependent designated environmental conditions.
154945
DC Motor. Electric motors turn electricity into motion by exploiting electromagnetic induction. A simple direct current (DC) motor is illustrated below. ... Electricity flows from the positive terminal of the battery through the circuit, passes through a copper brush to the commutator, then to the armature.
958977
The Permanent Magnet Synchronous Motor (PMSM) is an AC synchronous motor whose field excitation is provided by permanent magnets, and has a sinusoidal back EMF waveform. ... Like a brushless DC motor, it has a permanent magnet rotor and windings on the stator.
881071
Electromagnetic Core Imperfection Detection (EL CID*) Testing – One of the optional tests that GE performs during generator testing is the ELCID test . This test offers an accurate and economical way to know the condition of the stator core lamination insulation .
524754
A DC motor consists of an stator, an armature, a rotor and a commutator with brushes. Opposite polarity between the two magnetic fields inside the motor cause it to turn. DC motors are the simplest type of motor and are used in household appliances, such as electric razors, and in electric windows in cars.
636303
That means Routine tests of transformer include all the type tests except temperature rise and vacuum tests. ... Tests on bought out components / accessories such as buchhloz relay, temperature indicators, pressure relief devices, oil preservation system etc.
1069617
A digital multimeter is a test tool used to measure two or more electrical values—principally voltage (volts), current (amps) and resistance (ohms). It is a standard diagnostic tool for technicians in the electrical/electronic industries.
59735
CHECKING CONTROLLER OUTPUT Slowly depress accelerator pedal until the solenoid engages. Watch the voltmeter. The reading should show the battery pack voltage. Now slowly depress the pedal and watch the reading, it should go down to nearly 0 volts.
449427
['The transformer oil is filled in the vessel of the testing device. ... ', 'A test voltage is applied to the electrodes and is continuously increased up to the breakdown voltage with a constant, standard-compliant slew rate of e.g. 2 kV/s.']
969855
['Introduction to Visible Magnetic Particle Inspection. [00:03]', 'Check that that part is ferrous, then clean the part. [00:43]', 'Position the yoke or prods on the part or test area. [00:59]', 'Switch on the magenetizing current. Apply the magnetic particles Switch off the current. [01:39]', 'Demagnetize the part or test area. [02:04]']