I. High & Low voltage cabinets installation of power plant
1. 10KV high voltage switch cabinet installation of power plant
2. 0.4KV low voltage switch cabinet installation of power plant
3. Installation of generator protection system, synchronization system, transformer protection, H.V. motor protection, circuit protection in a power plant.
II. Electrical configuration testing items of power plant
1. Vacuum circuit breaker insulation resistance measurement, each phase circuit resistance measurement and AC voltage withstand tests of 10KV H.V. switch cabinet.
2. DC resistance measurement of CT and PT, polarity test, ratio test, AC voltage withstand tests in 10KV H.V. switch cabinet.
3. AC voltage withstand tests for whole 10KV H.V. switch cabinet.
4. AC resonant test for 10KV H.V. electric cable.
5. DC resistance measurement of generator stator and rotor.
6. Generator stator coil insulation resistance measurement and DC voltage withstand tests.
7. Generator rotor insulation resistance measurement.
8. Generator rotor AC impedance and power loss tests.
9. No-load characteristic test of generator
10. Generator checking phase sequence (fist checking phase and second checking phase separately).
11. Generator short circuit characteristic test.
12. Measurement of residual voltage of stator after automatic magnetic blow-out and switch opening of generator.
13. Generator shaft voltage measurement.
14. Generator simulate synchronization.
15. All of the second circuit checking, measuring, switch tripping & closing tests, protection fixed value setting, protecting the STG trip test and magnetic blow-out tripping test for Steam Turbine and generator.
III.Electrical problem troubleshooting in power plant
Problem Description: a coal mine`s 35KV H.T. switchgear OC protection tripped suddenly in He`nan Province, it caused sudden power lost of mine fan and endanger miner safety.
Auto-reclosing via switchgears` automatic reclosing function, through analysis, the reason is a set of 3000KW generator failure. Specific reason is: When the turbo-generator was running normally, exciting voltage lost suddenly, leading phase operation happened, the generator absorbed reactive power and lead to becoming motor running. Generator protection and power plant connecting line protection did not launch. After the generator absorbed a certain value of reactive power, the 35KV H.T. switchgear`s OC protection tripped.
Investigation: generator and power plant connecting line protection setting fixed value exceed the protection fixed value of 35KV switchgear side, it lead to nearby protection did not launch and override trip when generator failure.
Electrical Cabinet Care,10Kv Electrical Cabinet Care,0.4Kv Electrical Cabinet Care,Electric Governing Reconstructing Shandong Qingneng Power Co., Ltd. , https://www.steamturbine.be
Reliable quality factory price Pneumatic carbon steel flange ball valveÂ
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Carbon Steel PN40 Flange Ball Valve With Double Acting Pneumatic Actuator
Features
1.Flanged Ball Valve
2.Electro and Mechanical Polishing
3.Sealing Material:PTFE, NBR, EPDM, FPM
4.Manufacture Standard:GB, DIN, ISO, SMS
5.Zero Leakage
Specifications
1).Nominal Diameter:DN15-300
2).Pressure Range:1.6-6.4 Mpa
3).Medium Temp.:-10°C~+180°C
4).Ambient Temp.:-10°C~+60°C
5).Valve Body Material:SS304, SS316, WCB
6).Sealing Material:PTFE
7).Actuator Cover:Aluminum Alloy
8).Operating Pressure:3-8bar
9).Type:Double-acting, single-acting
10).Standard:ANSI, DIN, JIS
11).Connection:Flanged
Â
Brand:
KT/OEM
Applicable Media:
Water, Oil, Gas, Nitric Acid, Acetic Acid
Certification:
CE/API/DNV/FDA/ISO9001-2008
Sample Testing:
One Sample for free( Under $10),Freight Collect
Packing:
Plastic Bag, Carton &Â Plywood Case/According to customers' requirement.
Payment:
T/T, L/C, D/P, Western Union, Paypal
Port:
NINGBO/SHANGHAI, Customers' Request
Delivery Time:
Within 35days after receiving T/T deposit Payment
Term of Delivery:
FOB/CNF/CIF, Customers' Request
Reference picture
Upgrade
Contact
Thanks for your visiting.
If you have any questions about our products or company, please do not hesitate to contact us.
Factory address:Â The 3Rd,4Av, Binhai Industrial Park,Wenzhou,Zhejiang, CN.Â
Contact Person: Crystal Chan
Reliable quality factory price Pneumatic carbon steel flange ball valveÂ
Hot sale Pneumatic Flange ball valveÂ
Carbon Steel PN40 Flange Ball Valve With Double Acting Pneumatic Actuator
Features
1.Flanged Ball Valve
2.Electro and Mechanical Polishing
3.Sealing Material:PTFE, NBR, EPDM, FPM
4.Manufacture Standard:GB, DIN, ISO, SMS
5.Zero Leakage
Specifications
1).Nominal Diameter:DN15-300
2).Pressure Range:1.6-6.4 Mpa
3).Medium Temp.:-10°C~+180°C
4).Ambient Temp.:-10°C~+60°C
5).Valve Body Material:SS304, SS316, WCB
6).Sealing Material:PTFE
7).Actuator Cover:Aluminum Alloy
8).Operating Pressure:3-8bar
9).Type:Double-acting, single-acting
10).Standard:ANSI, DIN, JIS
11).Connection:Flanged
Â
Brand:
KT/OEM
Applicable Media:
Water, Oil, Gas, Nitric Acid, Acetic Acid
Certification:
CE/API/DNV/FDA/ISO9001-2008
Sample Testing:
One Sample for free( Under $10),Freight Collect
Packing:
Plastic Bag, Carton &Â Plywood Case/According to customers' requirement.
Payment:
T/T, L/C, D/P, Western Union, Paypal
Port:
NINGBO/SHANGHAI, Customers' Request
Delivery Time:
Within 35days after receiving T/T deposit Payment
Term of Delivery:
FOB/CNF/CIF, Customers' Request
Reference picture
Upgrade
Contact
Thanks for your visiting.
If you have any questions about our products or company, please do not hesitate to contact us.
Factory address:Â The 3Rd,4Av, Binhai Industrial Park,Wenzhou,Zhejiang, CN.Â
Contact Person: Crystal Chan
Model NO.: kst
Structure: Floating Ball Valve
Type: Floating Ball Valve
Temperature: Normal Temperature
Application: Industrial Usage, Water Industrial Usage, Household Usage
Size: 1/2"-8"
Place of Origin: Zhejiang
Diaphragm Material: EPDM, FPM, PTFE
Ball Assembly: Side Entry
Driving Way: Pneumatic, Normally Closed, Normally Open
Trademark: KT/OEM
Transport Package: Bubble Wrap, Carton Box, Plywood Case
Specification: CE, ISO9001, FDA, API, DNV
Origin: Zhejiang
HS Code: 8481804090
Model NO.: kst
Structure: Floating Ball Valve
Type: Floating Ball Valve
Temperature: Normal Temperature
Application: Industrial Usage, Water Industrial Usage, Household Usage
Size: 1/2"-8"
Place of Origin: Zhejiang
Diaphragm Material: EPDM, FPM, PTFE
Ball Assembly: Side Entry
Driving Way: Pneumatic, Normally Closed, Normally Open
Trademark: KT/OEM
Transport Package: Bubble Wrap, Carton Box, Plywood Case
Specification: CE, ISO9001, FDA, API, DNV
Origin: Zhejiang
HS Code: 8481804090
High Performance Pneumatic flange ball valve with competitive price Â
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High Performance Pneumatic flange ball valve with competitive price Â
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Phone :+8615669899003Â
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May 28, 2020