Ls commissioning

L&S Electric, Inc.

In business since 1930• Clients include:

– Electric power generation– Pulp & paper production– Paper converting– Mining, agriculture, & food processing– Rail & water transportation– Iron foundries– Industrial manufacturing– Original equipment manufacturers

Locations

Duluth

Menominee

Sturtevant

Minneapolis

AppletonWisconsin Rapids

Montreal

Wausau (3)

Gering, NE

L&S Facilities

Schofield, WI• Corporate headquarters

• Large motor & generator repair

• Locomotive equipment repair

Sturtevant, WI• Serving customers in

Wisconsin, Illinois, and Indiana

• Motor repair

• Reliability services

Rothschild, WI• Motor repair

• Central distribution warehouse

• Reliability & Power Services

Appleton, WI• Serving customers in eastern WI • Motor repair• Power & Reliability Services

L&S Facilities

Minneapolis, MN• Serving customers in MN, Iowa,

North and South Dakota

• Motor repair

• Power & Reliability Services

Menominee, MI• Serving customers in northeast

Wisconsin & eastern Upper Michigan

• Motor repair through 3000 HP

• New motor inventory through 200 HP

Duluth, MN• Serving customers in NW

Wisconsin & Northern Minnesota• Motor inventory through 200 HP• Power & Reliability Services

Engineering• Engineered Systems• Hydroelectric automation• Steam Turbine automation• Panel manufacturing facility

Quality Management

• All operations certified to ISO 9001-2000• Dedicated Quality Assurance Manager• Standards consistent at all facilities• Documented work procedures

& calibration program

L&S Electric Offers:

• Rotating Equipment Repair Service

• Power Service

• Reliability Service

• Engineering Service

• Electric Motors, Drives, Control, and related products

Motor and Generator Repair

• Largest and most complete facilities in the upper Midwest

• 150 dedicated motor repair technicians

• AC/DC, synchronous, and wound rotor

• Field repair team• Rail equipment repair• Pump and gearbox repair

Suppliers

• Marathon Electric• Reliance Electric• Yaskawa/MagneTek• Emerson• Teco/Westinghouse• Cutler-Hammer• Lafert• Grove Gear• Danaher• Overly Hautz• InPro Seal• GE Motors

Reliability Services

• Predictive maintenance programs

• Laser vibration analysis

• Laser alignment

• Dynamic balancing

• Roll profile analysis

• Equipment management

• Motor rotor diagnosis

• Real time analysis

Hydro Automation Solutions

• Integrated solutions for generator, governor, excitation, switchgear, and protection systems

• Worldwide reputation with projects in North America, South America, Asia, and the Pacific Rim

Power Services

• Switchgear & Circuit Breaker Services• Transformer Repair• Relay Calibration & Repair• AC/DC Drive Repair• Electrical winding Analysis• Thermographic Surveys• Ultrasonic Testing• Radio Interference Testing• High Voltage Cable Testing• Substation Commissioning• Personnel:

– 23 Technicians - 5 @ 30+ years– 11 @ 10+ years - 7 w/ BSEE & 5 w/ 2yr Degree

Substation Commissioning

• Apparatus Testing– Breakers

• SF6, Vacuum, OCB, Air Breakers– Transformers

• GSU, Large Power, Station Service, etc.– Relays

• Microprocessor, Solid State, EM– Manually and Electrically Operated Switches– Cables– CT’s, PT’s, CVT’s, CCVT’s, SA’s– All Apparatus Tested!

• Thermography, Ultrasound, Radio Interference• Controls• Functional Testing• Communication Testing

Breaker Commissioning

• Insulation resistance• Contact resistance• Timing• Dielectric withstand tests• Power factor• Minimum pick up tests for coils• SF6 gas work• Proper operation of auxiliary devices• Many other tests performed• 15 Lead Breaker Engineers

Transformer Commissioning

• Complete dress out• Turns ratio• Insulation resistance• Winding resistance• Excitation• Power factor• SFRA• Tap changer controls and set-up• All gauges and peripheral devices tested• Oil Analysis• Many other tests performed• 11 Lead Transformer Engineers

Relay Commissioning

• Setting installation• Fault interpretation• Protective element calibration• Automated test plan set up• Logic strings tested• Input / Output operation• Satellite relay testing on multiple lines• Primary injection for Bus Differential• All protection schemes – differential, breaker

failure, POTT, block fast trip, etc.• 10 Lead Relay Engineers

Switch Commissioning

• MOD’s• EOD’s• Insulation resistance• Contact resistance• Power factor• Dielectric withstand• Alignment• Cam adjustment• Timing• Many other tests performed• > 15 Lead Switch Engineers

CT’s, PT’s, CVT’s, CCVT’s, etc.

• Insulation resistance• Ratio• Polarity• Saturation• Burden• Power factor• Dielectric withstand• Excitation• Single point ground

State-of-the-art Equipment

Thermographic Surveys...

• Long wave system, which is less susceptible to reflections, allows accurate temperature measurement in adverse environments.

• Measurements from -10°C to +1500°C with ±0.1°C accuracy.

• Scanning distances up to 60 feet.

• Immediate preliminary analysis.

• Details potentially hazardous problems.

On-Site Report

Formal Thermographic Report*>139.0°F

*<94.6°F

95.0

100.0

105.0

110.0

115.0

120.0

125.0

130.0

135.0

• Indicates each piece of equipment that has been scanned

• Summarizes all problems found & the recommends solutions

• Identifies each problem by equipment name & location, provides a detailed description & states a recommended action for repair

Controls & Functional Tests

• Injection of AC circuits• Verification / operation of DC circuits• Testing / operation of all protection schemes• End-to-End line relay testing via satellite

– Multiple Terminal Lines• Verification / operation of control• Verification of RTU, SCADA, DCS points

Maintenance & Repair Services

• Transformers– Bushing Repair/Replacement, Oil Analysis, Tap

Changer Inspection & Repair, Replacement Parts & Services

• Breakers, Switchgear & Disconnects– In-Shop & On-Site Rebuild and Retrofits, New and

Obsolete part Support, Roll-In Replacements, Low through High Voltage, OCB’s, Vacuum, Air, SF6

• Relays– Retrofit and Upgrade to New Microprocessor Relays

- Generation, Transmission, Distribution, Motors -

Cable Commissioning

• Insulation resistance• Shield continuity• DC hipot• AC hipot• Tan-Delta• VLF• Partial Discharge• 3 Lead Cable Engineers

VLF / Tan Delta

• Great Baseline Test!• IEEE 400.2 Standard• Maximum voltage of 44k Vrms• True sine wave low frequency output• Capable of testing 1microfarad at .01Hz and 60 kV peak• We’ve done over 40,000 feet

Partial Discharge Testing

• IEEE 400.3 Standard• Best Used for NEW Installations

– Workmanship defects• Signal attenuation is the limitation for all PD Testing.

Attenuation occurs >5k feet, splices, joints, etc. increase attenuation– Millivolt Signal– No Power Limitation!!

• 0 PD is the Limit– 6pC or 6000 the test specimen fails– Test Technician needs to differentiate between noise

and signal• Does Not Work for Tape Shielded Cable

And More

• Ground grid testing• DC Systems• Ultrasound• Radio Interference• Voltage Regulators• Optical Metering Units• And More!

L&S Electric: we continually work hard to keep you running!