00:01Hello and thank you for taking the time to watch this video on motor and generator high

00:06voltage testing. My name is Ali Sherry and I'm an international

00:11sales engineer at Hypertonic, the leading manufacturer of high voltage testing systems.

00:18Today, we will be talking about motor and generator, high voltage testing before we get

00:24started. If you have any questions regarding this

00:27presentation, please don't hesitate to reach out to us at sales at hypersonics.com.

00:35We will be happy to answer any questions you may have.

00:40Now without further ado we will go over the agenda for this presentation.

00:47Today. We'll be talking about basic definition for

00:50electric motors and generators.

00:53What are the industrial uses?

00:56Uh the applicable high voltage tests and affiliated standards for uh motors and

01:01generator testing.

01:03Going over DC, high blood testing, ac, high blood testing,

01:08insulation resistance and polarization index testing and performance test.

01:15We will go over what uh hypertonic equipment we offer for high voltage testing and motors and

01:21generators. Uh starting with the 800 BL series,

01:27the 700 D I series, the TSR and the MTs

01:35starting with the basic definitions for motors and generators,

01:39a generator converts mechanical energy into electrical energy.

01:44While a motor does the opposite, it converts electrical energy into mechanical energy.

01:50The applications for electrical motors mainly include flowers,

01:54fans, machine tools, bumps and turbines.

01:58While generators can be seen in power stations to generate electricity

02:06for every motor and generator, there are two essential components.

02:11The ser and the rotor, the state is the stationer bart as the name suggested.

02:18In contrast, the rotor is the rotating part.

02:22Both stater and rotors are covered in insulation that prevents short between winding

02:29as well as from the conductors to the grounded uh frame.

02:34Moving to the applicable tests and standards. We will be first looking at the DC Hypo and DC

02:41Hypo testing. The DC hypothesis are modeled after AC

02:46hypothesis. Thus, a DC Hypo test voltage is often derived

02:52from a typical AC Hypo test voltage which has proven to work well.

02:58The AC and DC IPOD tests follow the following standards.

03:01The I trouble E 95 112 and 114 IEC

03:08634 ESA er 100 nema mg one.

03:15It's a one minute test unless specified or unless the specified test voltage of the unit

03:20is less than 2500 volt, a one second test at a 1.2 times.

03:27The specified one minute test is allowed.

03:31The two tables on the right shows that this voltages for new machines and used

03:38machines are spare. The standards moving to the IR and P I test.

03:46The insulation resistance and polarization indexes of an electric motor or generator have

03:52been regarded as a useful tool in evaluating its winding for the build up of dirt or

03:58moisture or the duration of the insulation.

04:03The I trouble E standard number 43 covers the procedure for determining insulation resistance

04:09and polarization index. In details the insulation resistance reading

04:15are taken after the test voltage has been applied for one minute.

04:20At the same time, the polarization index is the ratio of 10 minute insulation resistance tests

04:28to the 1 m insulation resistance test.

04:31It's common to take reading at one minute, 1.5 minutes, two minutes,

04:37three minutes up to 10 minutes.

04:40Table one on the right shows the guideline for direct voltage to be applied during the

04:47insulation resistance test. While table three shows the recommended minimum

04:52values of polarization index for insulation per thermal class.

04:56Machine components, different efficiency tests are called by different

05:03standards like the I AAA 95 112 and 114 the IEC

05:09634 ECR 100 Neo MG one uh test like the Nolo

05:16test which is the same um as the open circuit test performed on transformers

05:23vibration test, sand level test.

05:26Uh On the right hand, uh figure 7-6 or dash six shows the

05:33machine vibration limit from San industrial motors to precision motors with

05:40special requirements as it can be seen on the right diagram,

05:47the connections are made to the stater. This is often done in a game test where the

05:52three phases are tied together.

05:55Uh This will allow to find the faults between the theater winnings and the grounded

06:02frame. Um uh For this test, the rotor may be in place

06:09or removed. The DC test is the same connection as uh the AC

06:15test. Once the test is completed, the whining under

06:21your test have to be discharged.

06:24Moving to the P and AD A R test.

06:30The P I or polarization index is a metric used to determine the health of insulation of

06:37hone motors and generators.

06:40P is the ratio of the mega homes after 10 minutes divided by the mega homes.

06:46After one minute. A ratio of 2 to 1 is the minimum recommended

06:54for suitability for the surface or implementation of high blood testing.

07:00Any values below 221 should be concerning.

07:05On the other hand, the the electric absorption ratio is another metric for

07:11determining the insulation health.

07:15It's the ratio for mega ohms at one minute divided by the mega ohms at 30 seconds.

07:23When the measured leakage current stabilizes within one minute,

07:27operators usually use the DAR test if this happens the 10 minutes P I

07:34test is useless because the ratio is one values for

07:41DAR and P I use for evaluating the insulation conditions are

07:48anything less than 1.25 DAR value.

07:53The insulation condition is questionable for any dar that's between

07:591.25 and 1.6.

08:02The insulation condition consider good for any DAR value over 1.6.

08:10This is an excellent insulation condition.

08:13On the other hand, for any value for any P I value

08:20between one and two, it's a questionable insulation condition.

08:262 to 4 P values.

08:29The insulation condition is good.

08:31Any P I value over four, you have an excellent insulation condition.

08:38After discussing the applicable high voltage tests and affiliated standards,

08:43we now shift to what hydronic offer for motors and generator testing.

08:49Starting with our 800 PL series.

08:53The DC Hypo for motor and generator is very common for two major reasons.

08:59First, the capacities of motor generators can be difficult to determine because more

09:05capacitance means greater current draw.

09:09In other words, it could build more current than an AC high bar unit can supply.

09:14Also DC hybu system can test any size load.

09:21The second reason is that because the DC Hypo is much smaller in size and lighter in weight

09:27compared to other ac high bots which make it easier to transport to remote locations.

09:36Our 800 BL series is ideal for testing large motors and generators that have very

09:43large capacitance because of the robust grounding scheme and the automatic quick damp

09:49feature for safe discharging.

09:52The 800 PL series come with multiple safety features for a very safe operation such as

09:59an E stop on the front panel, hand switch foot switch interlock options are also

10:05available safety stroke option to alert operators of high voltage.

10:13The 800 P series can also automatically calculate the P I.

10:19Another great feature is the programmable automatic mode which allows

10:26users to create their hypo step voltage testing program

10:33for AC hypo testing.

10:35Our 700 dash D I series can provide enough current to test most motors and all but the

10:42largest generators, some of the great features of the series offer,

10:47it can perform ac high blood testing from five KV to 400 KV and up to

10:53300 K VA, it comes with high accuracy with plus and minus

11:001.5% of reading and plus and minus

11:050.2% of all scale.

11:10The series can operate from 0.5 to 100% of the rated al voltage.

11:18The 700 dash D I offers programmable test procedures and it can be possible to integrate

11:25it into almost any lab or production facilities.

11:30The series can be controllable via onboard touchscreen controller or a PC software or

11:37remote commands. The 700 dash D I series offer automatic digital

11:44data acquisition for easier collecting, storing and saving data.

11:50The 700 D uh dash D I is also safety integrity level three compatible.

12:01The 700 dash D I series also offer a great low noise, high voltage source for partial

12:07discharge measurement with the optional item for an elbow level of less than two PC.

12:15The series also can be integrated into 10 delta measurement systems and the continuous to

12:22recycle option is available.

12:26The series also offer mobility option for mobile testing and the galvanic isolation

12:32option is also available for the 700 dash D I series.

12:38Moving to our resident test systems. The TSR our tank type series resonant into

12:45systems which can be used for applied AC test on generator windings and can be built

12:52into a single enclosure to maximize portability in the factory on the site.

12:59The TSR is used for large capacity loads and micro Ferres range.

13:05The TSR can test full as simple windings and it can utilize energy storage properties,

13:13higher voltage and current output versus inbound.

13:18The TSR can come with lower Q factor versus resonant systems used in other

13:25applications due to the losses in the circuit when testing generators.

13:33Some of the unique features the TSR offer are the following all in one cap and a closure

13:39like seeing on the picture on the right.

13:42The cabinet include the regulating transformer, the exciter transformer,

13:49the high voltage reactors and the required capacitors and base loads.

13:54Other features like sewage or burial re operations, oil contaminant provisions,

14:01thermal protections and vibration daming provisions on these slides.

14:08We can see some of the typical generator ratings for voltages we can,

14:14it can be seen in from 230 volt up to 15 KV

14:22with winding capacitance between 300 nano ferat to four micro Ferres.

14:28For the AC test voltage, it should be two multiply by the nameplate voltage plus 1000

14:34volt where the current can be calculated as to multiply by pi

14:42multiplied by the frequency multiplied by the device and their testing capacitance

14:49multiplied by the test voltage.

14:53On this slide, we can see some of the TSR models.

14:56Hyper electronics offer other voltages and current ratings are also available based on the

15:03customer testing requirements.

15:06Another great solution we offer here in hydronic is the motor test systems.

15:12The MTs is an electrical control measurement and power device used to sort a multi

15:18horsepower single phase polyphase and DC motors.

15:23The NTS measures electrical and physical parameters while the motor is running at a

15:28determined R PM.

15:31On this slide, we can see the four different motor types starting with the AC induction

15:37where the seder winding is energized from an AC source.

15:42If the load increase, the speed decreases.

15:46The second type is the AC synchronous where the armchairs uh winding is energized from an AC

15:52source and its field winding from a DC source.

15:56It always runs at a synchronous speed and the bending of the load.

16:01The third type is the AC attraction with a variable frequency drive.

16:08It adjusts speed by changing frequency.

16:12The last SAG is that DC motors was C and chant series is always better for high

16:19torque applications where the shunt is better for precise speed control.

16:26On this slide, we can see the efficiency test hydronic MTs system can perform,

16:33they can run motors to their name play value.

16:37The MTs can measure line to line voltage and current watts,

16:41temperature, power factor R PM and vibration.

16:49The table here shows the technical specifications for some of our standard MTs

16:55systems. The model prefix MTC applies to system one to

17:01systems with both AC and DC testing capabilities.

17:05Motor system with AC capabilities only the DC specifications in the gray shaded

17:12area is eliminated and model prefix changes to MT A

17:19larger and smaller units may be available upon request.

17:25Our NTS comes with the following unique features using PV T.

17:32You will have a pure sine wave over the entire range of output.

17:37A remote control comes as a standard feature.

17:41They also offer duty cycles designed to meet motor testing requirements.

17:48After talking about some of the systems and solutions we offer here in hypersonics for

17:53motor and generator testing.

17:56We will be now looking for some common questions on hyper testing.

18:01The first question is does high blood testing damage a good winding?

18:05The answer is no maintenance.

18:08High blood tests do not introduce any significant degradation in a machine with a

18:14good insulation. The second question is when to apply a hypo

18:20test. The answer is hypo test should be used as an

18:24acceptance and quality assurance test on new winding maintenance program should include high

18:31blood tests and should be tested every 3 to 6 years.

18:36The third question is, what tests should we consider easy or DC ipods?

18:43The answer is AC hypo tests are prepared for new machines but either hypo

18:50test is better than no high B test.

18:55In conclusion, high voltage testing can tell you a lot about a generator of motors condition

19:01and integrity. The most common test that manufacturers and

19:05service groups must do is a high voltage. A CD electric with dentist.

19:12The test involves applying an ac voltage to a rotor or stater winding to verify it can

19:18withstand a specified ac voltage.

19:21This will not only confirm the quality of the new generator or motor but it is also a useful

19:28test to verify the insulation condition after a generator or motor has already been installed.

19:34Also, a CD ELECTRIC testing is a common high voltage test performed.

19:41There are many other tests done for quality checks and preventive maintenance purposes.

19:47These other high fater tests include power factor testing,

19:52insulation, resistance, no load and load testing.

19:57And of course, the DC Hypo testing here in hydronic.

20:03We offer the largest variety of generator and motor testing equipment on the market.

20:09Hydronic can provide the necessary high voltage test equipment to all generator and motor

20:15manufacturers, service and maintenance companies and those in the hydro and mining

20:22industry where generators and motors are used frequently.

20:29At the end of this presentation, I want to thank you for your time.

20:33And encourage you to reach out to us if you have any questions or if you need more

20:40information about any of our systems.

20:43Our contact information are listed below.

20:46Thank you.