Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final...
Transcript of Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final...
![Page 1: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/1.jpg)
SubstationCommissioning
![Page 2: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/2.jpg)
Topics• Project Overview
• Review Work Plan
• Substation Equipment TestingPower Circuit BreakersPower TransformersCapacitors
![Page 3: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/3.jpg)
Project Overview• Reviewing the Work Plan
• Planning and Co-ordinating the Work Plan
• Communicating
• Verifying
• Testing
• Troubleshooting, Re-verifying, Re-testing
• Completing Project Documentation
![Page 4: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/4.jpg)
![Page 5: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/5.jpg)
Review the Work Plan
Review the Work Plan
• Identify what’s happening
• Who will be involved?
• Identify Responsibilities
• Review Project Documentation
• Develop Work Sequence
• Identify what’s happening
• Who will be involved?
• Identify Responsibilities
• Review Project Documentation
• Develop Work Sequence
![Page 6: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/6.jpg)
![Page 7: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/7.jpg)
![Page 8: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/8.jpg)
Power Circuit Breakers
![Page 9: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/9.jpg)
Power Circuit Breaker Guidelines
Test CTs
Measure Coils & Megger
Wiring & Jumpers
Physical Orientation
Verify Prints
Record Nameplate Data
![Page 10: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/10.jpg)
Testing CTs
Ratio, Polarity, & Burden
Open Circuit Excitation
Buzz & Megger Cables
Terminate Hardwired Shorts on Spares
Verify CT circuits only grounded @ one point
Verify Shorting Bar is GROUNDED
![Page 11: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/11.jpg)
Power Circuit Breaker Guidelines
Gas Fill & Measure
Test CTs
Measure Coils & Megger
Wiring & Jumpers
Physical Orientation
Verify Prints
Record Nameplate Data
![Page 12: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/12.jpg)
SF6 Parameters
![Page 13: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/13.jpg)
Power Circuit Breaker Guidelines
Wiring Checks
Check Timing
Gas Fill & Measure
Test CTs
Measure Coils & Megger
Wiring & Jumpers
Physical Orientation
Verify Prints
Record Nameplate Data
![Page 14: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/14.jpg)
Purpose:
Method:
Analysis:
Breaker Timing
Verifies Breaker Contacts are Opening & Closing within acceptable time limits
Measure Tripping & Closing Times
Contact Velocities & Inter-pole Spread
![Page 15: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/15.jpg)
![Page 16: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/16.jpg)
Time (ms)
Time & Travel for Close (Contact Velocity)
Distance
36 mm/ 14 ms =2.57 m/s
![Page 17: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/17.jpg)
Breaker Timing Test Plan
Trip (Both Trip Coils)
Close w/ X Coil Included
Reclose using each Trip Coil
Trip-Free using each Trip Coil
Close w/ X Coil Excluded
![Page 18: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/18.jpg)
Breaker Timing
Start w/ a Close Shot TC1 Reclose
Trip & Trip Free on TC1 App note 7 close
(Move leads to TC2)
App note 7 reclose w/TC2 connected
Trip & Trip Free on TC2
PCB Open PCB Closed
All done with only 8 operations
![Page 19: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/19.jpg)
Power Circuit Breaker Guidelines
Wiring Checks
Energy Storage Checks
Primary Contact Resistance
Check Timing
Gas Fill & Measure (after 24 hrs)
Test CTs
Measure Coils & Hand Megger
Wiring & Jumpers
Physical Orientation
Verify Prints
Record Nameplate Data
![Page 20: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/20.jpg)
Energy Storage Systems
Spring Pressure Rundown Checks
Spring Discharge
Overnight Sag
Motor Start/Stop
Low Spring Alarm
Operation Block
![Page 21: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/21.jpg)
Energy Storage Systems
Temperature Compensated
SF6 Purity & Moisture
Gas Density Checks
![Page 22: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/22.jpg)
![Page 23: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/23.jpg)
Power Circuit Breaker Guidelines
Wiring Checks
Final Moisture
Accessory and Alarm Checks
Operational Checks / Load Overall
Power Factor
Energy Storage
Primary Contact Resistance
Check Timing
Gas Fill & Measure
Test CTs
Measure Coils & Megger
Wiring & Jumpers
Physical Orientation
Verify Prints
Record Nameplate Data
Final Checks
![Page 24: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/24.jpg)
Final Checks
Trip Checks - Local & RemoteAlarms & Indications - Local & Remote - SCADA CT Final ChecksBridge & Dummy Load PT Circuits
Gas PressuresGround Switches Open / All Relays in Service
Hi-Pot w/ System Voltage
Close PCB & Pick-up Load
![Page 25: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/25.jpg)
QuickTime™ and aH.264 decompressor
are needed to see this picture.
![Page 26: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/26.jpg)
PCB Final Checks
Trip Checks - Local and RemoteAlarms - Local & Remote - SCADA
CT Final ChecksBridge & Dummy Load PT Circuits
Gas PressuresGround Switches Open / All Relays in Service
Hi-Pot w/ System Voltage
In Service Checks
Close PCB & Pick-up Load
![Page 27: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/27.jpg)
![Page 28: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/28.jpg)
Power Transformers
![Page 29: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/29.jpg)
Transformer Testing Guidelines
Oil Processing / Sample
Test CTs
Hand Meggering
Wiring & Jumpers
Physical Orientation
Auxiliary Components
Record Nameplate Data
Insulation Power Factor
![Page 30: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/30.jpg)
Insulation Power Factor
![Page 31: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/31.jpg)
Insulation Power Factor
Capacitive Current Leakage Current
Capacitance represents ability to store energy when voltage is applied
Dissipated energy and heating from applied voltage across insulation
Measuring Dielectric Loss
![Page 32: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/32.jpg)
Insulation Power Factor
Here it is Ratio of Dielectric Losses to Total Power supplied, or ratio of leakage current to total current.Example: Total Power = 460 mVA with 3.3 mW : Calculated % PF = 0.72
% Power Factor in general: Ratio of Watts to Total Power
![Page 33: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/33.jpg)
Insulation Power Factor
• Grounded Specimen Test (Ground)
![Page 34: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/34.jpg)
• Grounded Specimen Test w/ LV guarded out (Guard)
Insulation Power Factor
![Page 35: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/35.jpg)
• Un-grounded Specimen Test (UST)
Insulation Power Factor
![Page 36: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/36.jpg)
• Ground, Guard, & UST
Insulation Power Factor
![Page 37: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/37.jpg)
Ground
![Page 38: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/38.jpg)
Guard
![Page 39: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/39.jpg)
UST
![Page 40: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/40.jpg)
Ground
![Page 41: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/41.jpg)
Guard + UST
![Page 42: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/42.jpg)
Excitation Current
![Page 43: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/43.jpg)
Excitation Current
![Page 44: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/44.jpg)
![Page 45: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/45.jpg)
Bushings
![Page 46: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/46.jpg)
Bushings
Higher Voltages have potential taps w/ C2 > C1. Check Nameplate before applying voltages. Megger Bushing and its tap if no PF test set is available.
![Page 47: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/47.jpg)
Transformer Testing Guidelines
Insulation Power Factor
Winding Ratio, Polarity
Oil Processing/ Sample
Test CTs
Hand Meggering
Wiring & Jumpers
Physical Orientation
Auxiliary Components
Record Nameplate Data
![Page 48: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/48.jpg)
Winding Ratio, Polarity
Purpose: Checks Turns Ratio & Polarity on all tap connections
Method: TTR Test Set continually through all taps.
Analysis: Measured Ratio and Nameplate should match
very closely (0.2%)
Measured Ratio will be slightly lower than calculated due to slight losses in TTR test set.
Shorted turns & high contact resistance indicated by high excitation current. Ratio error greater
than 0.2% will be easily noted.
![Page 49: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/49.jpg)
Transformer Testing Guidelines
Insulation Power Factor
Winding Ratio, Polarity
Oil Processing/ Sample
Test CTs
Hand Meggering
Wiring & Jumpers
Physical Orientation
Auxiliary Components
Record Nameplate Data
Impedance
![Page 50: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/50.jpg)
Measuring Impedance
Purpose:
Method:
Analysis:
Detect shipping damage & basis for future tests
Compare with Nameplate at Nominal Taps
Useful for determining core and coil shifting, loose or high resistance connections
![Page 51: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/51.jpg)
Measuring Impedance
![Page 52: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/52.jpg)
Measuring Impedance
In General:
3 Phase wye-wye or wye-delta
3 Phase delta-delta
Zero-sequence
![Page 53: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/53.jpg)
Transformer Testing Guidelines
Insulation Power Factor
Winding Ratio, Polarity
Oil Processing/ Sample
Test CTs
Hand Meggering
Wiring & Jumpers
Physical Orientation
Auxiliary Components
Record Nameplate Data
Impedance
Calibrate Temperature
![Page 54: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/54.jpg)
![Page 55: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/55.jpg)
Transformer Testing Guidelines
Insulation Power Factor
Winding Ratio, Polarity
Oil Processing/ Sample
Test CTs
Hand Meggering
Wiring & Jumpers
Physical Orientation
Auxiliary Components
Record Nameplate Data
Impedance
Calibrate Temperature
Bump Fans & Pumps
Bushing Pot Devices
DC Winding ResistanceMegger Core Ground &
WindingsTrip Checks
![Page 56: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/56.jpg)
![Page 57: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/57.jpg)
Capacitors
![Page 58: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/58.jpg)
Testing Capacitors (Impedance)Start with Nameplate rating on
Can: 200 KVAR @ 22800 V
I = kVAR / kVI = 200 / 22.8 = 8.77 A
Xc (per can) = I / jw(C)Xc (per can) = 22800 / 8.77 = 2600 Ohms
C = 1 / 377 (Xc)C = 1 / 377 (2600) = 1.02 microF
Each Can is then rated @ 1.02 microF
Q (kVar)= V I sin (theta)
= V / I
![Page 59: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/59.jpg)
C (meas) = I (meas) / V (meas) * 377
Number of Cells in Test?
100.58 0.859 22.6100.44 0.867 22.8100.56 0.860 22.6
Vmeas Imeas Cmeas
with V (meas) @ 100V, measure I
221.02 * 22 = 22.4 microF Cap. per layer
Testing Capacitors (Cont’d)
Build Data Sheet
22.4 0.2 0.8922.4 0.4 1.7922.4 0.2 0.89
Ccalc d %d
![Page 60: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/60.jpg)
Rack Wiring
![Page 61: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/61.jpg)
• Compare Schematics w/ Wiring Prints
• Buzz point to point
• Check Diodes
• Contact Makeups
• Test Switches
• Terminal Blocks
• Jumpers
• Wiggle Check Connections
Wiring Checks
![Page 62: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/62.jpg)
Relay Testing
![Page 63: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/63.jpg)
In Service Checks
![Page 64: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/64.jpg)
In Service Checks• Pre-determine the measurements.
• Cutout your TRIPS
• Magnitude and polarity of each current and voltage (phase angle and rotation)
• Look for quantities where you do and don’t expect them to be.
• Open CTs & Shorted CTs
• Wrong Ratios
• Neutral Connections
• Proper Potentials
• Document your Reference Potential &
![Page 65: Substation Commissioning - etouches · Power Circuit Breaker Guidelines Wiring Checks Final Moisture Accessory and Alarm Checks Operational Checks / Load Overall Power Factor Energy](https://reader030.fdocuments.us/reader030/viewer/2022040605/5ea81ec5b5e2d35269650fcf/html5/thumbnails/65.jpg)
Stay SAFE...
Thank you for joining us.