Home > Products > Installation And Care > Generator Care

Generator Care

Our eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" and the theory of "quality the basic, trust the first and management the advanced" for Generator Care,Steam Turbine Generator Care,Msw Power Generation,Combined Cycle Generating Unit we facilitate our customers with customized output facility.
Steam Turbine Overhaul
  • Min. Order: 1 Bag/Bags
  • Generator Type: Alternator
  • Output Type: AC Three Phase
  • Certification: CE, ISO
Steam Turbine Overhaul Steam Turbine Overhaul The cost effective way to power your profits for decades to come With the prolonged operation of the steam turbine power generation equipment after a long period of start stop operation the loss of the...
Steam Turbine Generator Care
  • Packaging: In cases
  • Min. Order: 1 Bag/Bags
  • Certificate: ISO9001
  • Transportation: Ocean,Land,Air
  • Generator Type: Alternator
Steam Turbine Generator Care Trust QNP s knowledge and experience in steam turbine inspection assessment and service QNP Maintenance and Installation Engineering Co Ltd is QNP s subsidiary company and has power engineering construction qualification...
2 poles steam turbine generator
  • Brand: QNP
  • Packaging: In cases
  • Min. Order: 1 Bag/Bags
  • Certificate: ISO9001
  • Place of Origin: China
2 poles steam turbine generator QNP steam turbine generator uses closed loop air self circulation ventilation The rotors of turbo generator under 50MW adopt indirect ventilation cooling method The rotors of 50MW and above turbo generator is directly...
10MW profession Steam Turbine Generator Care
  • Brand: QNP
  • Packaging: In cases
  • Min. Order: 1 Bag/Bags
  • Certificate: ISO9001,CE
  • Place of Origin: China
10MW profession Steam Turbine Generator Care With the prolonged operation of the steam turbine power generation equipment after a long period of start stop operation the loss of the equipment gradually increases which inevitably causes the wear tear...
10MW Steam Turbine Generator Rotor Maintenance
  • Brand: QNP
  • Packaging: In cases
  • Min. Order: 1 Bag/Bags
  • Certificate: ISO9001
  • Place of Origin: China
10MW Steam Turbine Generator Rotor Maintenance QNP Maintenance and Installation Engineering Co Ltd is QNP s subsidiary company and has power engineering construction qualification Generator rotor ground Symptom Generator grounding one point or two...
10MW Steam Turbine Generator Rotor Overhaul
  • Min. Order: 1 Bag/Bags
  • Generator Type: Alternator
  • Output Type: AC Three Phase
  • Certification: CE, ISO
10MW Steam Turbine Generator Rotor Overhaul With the prolonged operation of the steam turbine power generation equipment after a long period of start stop operation the loss of the equipment gradually increases which inevitably causes the wear tear...
1-200MW Steam Turbine Generator Care
  • Brand: QNP
  • Packaging: In cases
  • Min. Order: 1 Bag/Bags
  • Certificate: ISO9001
  • Place of Origin: China
1 200MW Steam Turbine Generator Care I Generator grid connected without synchronization Before grid connected the voltage frequency phase sequence and phase position of generator should be in step with grid But under some conditions the client doesn...
YOU MAY LIKE
magnetic generator / motor magnet / permanent magnet generator
Specifications magnetic generator motor magnet permanent magnet generator N35 N38 N40 N48 N52 Magnet rare earth magnets magnetic generator motor magnet permanent magnet generator Customized NdFeB magnets with our advanced processing technology 1 Material Sintered Neodymium Iron Boron 2 Temperature the max operation temp is up to 200 degree centigrade or 380 curie
New portable CE solar generator for home lighting
New portable CE solar generator for home lighting JR 120W New portable CE solar generator for home lighting spcification Solar panel 120W mono or poly crystalline solar panel Inverter 300W Controller intelligient solar charge controller Battery 100AH Maintanence free Lead Acid battery Loads 3pcs lights color TV table fan computer drill micro wave small refrig ect Warranty 2
High power CE solar generator;solar home system
JR GD90W solar generator 1 FUNCTIONS solar home light is widely used in farm village rural area where lack of electricity Both Solar Panel and Indoor 220V power can chager them With long lifespan good quality portable and efficient these advanced its really a good choice for daily neccessarities 2 COMPONENTS solar generator system 1 pcs 180W solar panel with 10M wires 1 pcs main box solar panel installation support bracket with Europe and Asia socket design suit to all countries in the world...
Lovol generator 25Kva to 150Kva (OEM Manufacturer)
Lovol generator 25Kva to 150Kva OEM Manufacturer Generator Model Lovol Generator series Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220 380 230 400 240 415 254 440V Rated Power 25Kva 14Kva Standby Power 27 5 Kva 154Kva
Best power solution:10kva to 500kva AC Three Phase Output Deutz diesel generator for sale
Below are prime imformation Pls feel free to tell me if you need more details Dwyane Deutz generataor different power Deutz Generator Water
generator price from 25Kva to 1250Kva
Generator price from 25Kva to 1250Kva Generator Data Generator Model Lovol Deutz Yuchai Ricardo generator series Type of generator Open type or silent type Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220
Deutz generator diesel power 10kva 25kva 50kva 100kva 125kva 150kva 180kva 200kva 250kva
Dwyane said sincerely Hello Sir Any power engine brands alternator color service and so on please leave an enquiry to know more details about price specification packing and discount Deutz generator power from 10Kva to 200Kva OEM
Deutz generator for sale
Dwyane said sincerely Hello Sir Any power engine brands alternator color service and so on please leave an enquiry to know more details about price specification packing and discount Deutz generator for
(3Kw to 5Kw) Portable diesel generator
3Kw to 5Kw portable diesel generator Generator Model 3Kw to 5Kw portable diesel generator Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220 380 230 400 240 415 254 440V Rated Power 3Kw 5Kva Standby Power 3 3Kva 5 5 Kva
Wudong Generator from 125Kva to 825Kva (OEM Manufacturer)
Wudong generator from 125Kva to 825Kva Generator Data Generator Model Wudong generator series Type of generator Open type or silent type Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220 380 230 400 240 415 254 440V Rated Power 125Kva 750Kva Standby Power 137 5Kva 825Kva
Water-cooled! Deutz generator 25Kva to 562Kva
Water cooled Deutz generator 25Kva to 562Kva Generator Model Deutz genreator series Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220 380 230 400 240 415 254 440V Rated Power 25Kva 562Kva Standby Power 27 5 Kva 600 Kva Phase
5kw generator for home use
3Kw to 5Kw portable diesel generator Generator Model 3Kw to 5Kw portable diesel generator Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220 380 230 400 240 415 254 440V Rated Power 3Kw 5Kva Standby Power 3 3Kva 5 5 Kva
Small diesel generator for home use
small diesel generator for home use Generator Model 3Kw to 5Kw portable diesel generator Frequency Speed 50Hz 1500rpm 60Hz 1800rpm Voltage 110 220 220 380 230 400 240 415 254 440V Rated Power 3Kw 5Kva Standby Power 3 3Kva 5 5 Kva Phase
Photon Ultrasonic Skincare Machine ultrasonic generator
Specifications ultrasonic frequency 3MHZ red blue and green photons portable design ABS shell ultrasonic generator UB 002 Photon Ultrasonic Skincare Machine Facial Massager Portable Beauty Care with CE ultrasonic generator Thank you for browsing our ultrasonic generator This ultrasonic generator is designed to take care of normal skin and to beautify it Any other usage and sales in connection with medical purpose are not supported ultrasonic generator ultrasonic
Chargeable Photon Ultrasonic Skin Care Machine ultrasonic generator
Specifications 3MHZ ultrasonic slimming and tigthen for skin red photon 628nm green photon 525nm blue photon 413nm ultrasonic generator UB 002A Rechargeable Photon Ultrasonic Skincare Machine Facial Massager Portable Beauty Care with CE ultrasonic generator Thank you for browsing our ultrasonic generator This ultrasonic generator is designed to take care of normal skin and to beautify it Any other usage and sales in connection with medical purpose are not supported
Chargeable Photon Ultrasonic Skin Care Machine ultrasonic generator
Specifications 3MHZ ultrasonic red blue and green photons for options CE approval ultrasonic generator UB 002B Rechargeable Photon Ultrasonic Skincare Machine Facial Massager Portable Beauty Care with CE ultrasonic generator Thank you for browsing our ultrasonic generator This ultrasonic generator is designed to take care of normal skin and to beautify it Any other usage and sales in connection with medical purpose are not supported ultrasonic generator ultrasonic
Ionic Photon Ultrasonic Beauty Care Machine ultrasonic generator
UB 006 Ionic Photon ultrasonic generator Care Machine with LCD Display Portable Beauty Care Facial Massager ultrasonic generator ultrasonic generator Functions ultrasonic generator with LCD screen ultrasonic generator ultrasonic waves 3MHz ultrasonic generator with positive ions ultrasonic generator with negative ions ultrasonic generator photon therapy Red Blue Green ultrasonic generator with USB charger ultrasonic generator Features The generator of ultrasonic generator can have 3 million...
Photon Ultrasonic Skincare Machine ultrasonic generator
Specifications ultrasonic frequency 1MHZ red blue and green photons multifunction beauty device ultrasonic generator UB 009 Ultrasonic Photon Skin Care Machine Facial Massager Ultrasonic Beauty Care Device ultrasonic fat cavitation ultrasonic fat cavitation Introduction Ultrasonic Photon Skin Care Machine is the new clinical skin renewal ultrasonic fat cavitation adapted for home use you can enjoy professional clinical aesthetic skin treatment results with a safe effective
Ultrasonic Photon Galvanic Skin Renewal Device ultrasonic generator
Specifications ultrasonic frequency 1MHZ red blue and green photons positive and negative ions portable design ultrasonic generator UB 010 Ultrasonic Photon Galvanic Skin Renewal Device Facial Massager Portable Beauty Equipment ultrasonic generator ultrasonic generator Introduction Ultrasonic Photon Galvanic Skin Renewal ultrasonic generator is the new clinical skin renewal ultrasonic generator adapted for home use you can enjoy professional clinical aesthetic skin
4-in-1 Ionic Photon Ultrasonic Beauty Machine ultrasonic generator
Specifications ionic galvanic function red and blue photon skin care 3MHZ ultrasonic CE approval portable design ultrasonic generator UB 011 4 in 1 Ionic Photon Ultrasonic Beauty Machine Handheld Beauty Massager Facial Beauty Equipment ultrasonic generator ultrasonic generator Introduction The skin in the body surface is the largest organ of human body which is both relating to health and also about the image so it is increasingly becoming the focus of concern for people
80kva generator set 64kw generations home care system
Our Diesel Generator Production Range is as follows Engine motor for Choice Cummins Engine USA 15KVA 2000KVADeutz Engine Germany 20KVA 150KVA Perkins Engine UK 8KVA 2000KVA Volvo Engine Sweden 85KVA 700KVA Doosan Engine Korea 60KVA 850KVALovol Engine China 20KVA 150KVA Yangdong Engine China 8KVA 40KVAWeichai Engine China 8KVA 150KVA Shanghai Engine China 60KVA 1000KVAYuchai Engine China 20KVA 1125KVA With Cummins engine 64kw generations home care system is adopted the B N K series engine sino...
China Generator Care Suppliers

The insulation breakdown accident often occurred in generator. It includes interphases short circuit, inter-turn short circuit and ground fault.

The interphase short circuit: the generator windings ends will be greatly impacted by electric power and may make the coil end deformed under two-phase or three-phase short circuit and differential protection tripping happening.

Inter-turn short circuit: Generator outlet blasting, if it continues a long time, the stator copper wire will be melted. When no-load run, the generator three-phase voltage will be imbalance.

Ground fault: Generator breakdown location is in the linear portion or notch position and stator ground protection act. The insulation resistance value between stator ground and ground is zero or minimum.

The fundamental reason of generator insulation breakdown is that the stator coil insulation is weak or there is a corona etching in notch in run time. The treatment method is to find the point of breakdown and reworked and reinforced insulation. At the same time, eliminating the corona etching in a maximum extent is important.

III. A large noise or vibration with generator

The reasons of a large noise or vibration with generator are:

1. Foundation bolts loose, or STG subsidence. Treatment: fastening bolts. Recalibration concentricity.


2. Generator rotor and Steam Turbine shaft are misalignment. Treatment: calibration concentricity.


3. Bearing wall worn or damaged under short oil. Treatment: repaired bearing or replace a new bearing with same model.


4. There is a friction between the stator and rotor. Treatment: find the friction location and reason, and then eliminate it.


5. Fan or other fasteners loose. Treatment: Tighten fan and fasteners.


6. Rotor coil partial short circuit, two points grounding or wiring errors. Treatment: please inspect the insulation of slip ring and the rotor coil to the ground. Or connect to the DC power source and check the voltage drop of each coil, winding direction and wiring method. So we can identify the cause of the malfunction and eliminate them.


7. Brush is too hard, or the pressure is too large. Treatment: adjust the pressure or replace the same type of brush.


8. Three-phase current are severe asymmetry. Treatment: please investigate that the three-phase current imbalance is in the allowable range or not. If it is not in the allowable range, please adjust three-phase load or reduce the load.


9. Stator winding short circuit or ground. Treatment: Find out the fault and repair it.


10. External fault or lightning strike. Treatment: if the vibration time is too long, please stop the STG and inspect.


Typical

cases:


This is a 15 MW generator from a Shandong customer. The vibration of generator is reached to 0.12mm in running. After inspection the generator, we found that rotor dynamic AC impedance upheaval 12% in 2400-2700 and the dynamic inter-turn short circuit is serious. It destroys the balance of the magnetic field and causes the electromagnetic force uneven of generator rotor. After removal of the rotor retaining ring and treatment the rotor inter-turns, we start the STG. The vibration is about 0.01mm.


IV. The temperature of a generator is too high.


Generally the temperature of a generator will be in the allowable value, if the generator running normally and the current, voltage, frequency, power, excitation current and power factor are all within the allowable fluctuation range. If a generator stator, core and other parts temperature are too high, please consider the following cases:


1. Generator overload operation and exceed the allowable time. Treatment: Please reduce the generator load to the rated load or under rated load as soon as possible.


2. Three-phase current are serious imbalance. Treatment: please find out the reason of imbalance. If it is the voltage causing, please check if it is the generator inter-turn short circuit. If it is load causing, please adjust the load and make it balance.


3. The ventilation cooling system of generator is poor. For example, the temperature is too high, the air duct or exhaust duct are blocked, the coil and its ends are serious fouling. Treatment: please reduce the load suitability, improve ventilation, and remove fouling.


4. The stator winding portion short circuit or ground. Treatment: Find out the short circuit or ground point and repair them, and then eliminate short circuit or ground risks.


5. Insulation of the stator core may be partially damaged and short circuit, so there is a vortex and overheat. Treatment: please reduce the load suitability. If the generator reduces its efficiency obviously, please repair the generator stator core.


6. The bearing is short of lubricating oil. The oil number is wrong. The oil quality is bad. The bearing is installed with a wrong way or the bearing is damaged. Treatment: please find out the reason and then replace the oil or clean, adjust or replace bearing.



V. Generator rotor ground


Symptom: Generator grounding one point or two points grounding light plate light.


Fault Analysis: Generator rotor winding insulation damage, coil deformity and severe dust and greasy attached in the ends seriously are all leading to the grounding of the generator rotor windings. When the generator rotor winding grounding in one point, there is electrical current pass as the ground does not constitute an electrical circuit.

However, after one point grounded, it is easy of leading another grounding point. If any part in excitation circuit ground, it can form ground fault of two or more points ground. It is very dangerous.

After the failure, the rotor windings are short-circuited. Because of the small winding DC resistance, the excitation current will increase. So the magnetic field of generator is out of balance, and main magnetic flux reduces largely. So the STG will vibrant strongly. Meanwhile the power factor of the generator will be increased significantly and get into leading phase running (absorption of reactive power from the grid).


The stator field becomes in the frond and the rotor field becomes in the back. It will make the stator current increases. If the watcher notice that there is no excitation varying but the excitation current and stator current suddenly increases, and the excitation voltage and AC voltage are all suddenly drop, and power factor meter indicates increasing or leading phase, it means the generator rotor grounded or inter-turn short circuited. You should shut down the STG and blow-out magnetic. Please inspect the excitation system and rotor windings, and find out the short circuit point and treat it.



VI. Excitation upgrading and generator test


Excitation system upgrading, brushless exciter changes into the SCR excitation and make the generator maintenance easily. And it removes the disadvantage of brushless excitation dynamic adjustment slowly. The generator test includes stator insulation resistance test, the absorption ratio test, the iron loss test, leak test, AC and DC voltage withstand test, the rotor high speed balancing and overspeed test, dynamic and static AC impedance test, the generator no-load test, short circuit test, temperature rise test, residual pressure measurement, axis voltage measurement.