ELTEK Labs conducts Electrical Insulation Systems (EIS) testing in accordance with:
International Electrotechnical Commission (IEC)
IEC 60034: Rotating Electrical Machines
- Part 15: Impulse voltage withstand levels of form-wound stator coils for rotating a.c. machines
- Part 18-1: Functional evaluation of insulation systems – General guidelines
- Part 18-21: Test procedures for wire-wound windings – Thermal evaluation and classification
- Part 18-22: Test procedures for wire-wound windings – Classification of changes and insulation component substitutions
- Part 18-31: Test procedures for form-wound windings – Thermal evaluation and classification of insulation systems used in rotating machines
- Part 18-32: Test procedures for form-wound windings – Evaluation by electrical endurance
- Part 18-33: Test procedures for form-wound windings – Multifactor evaluation by endurance under simultaneous thermal and electrical stresses
- Part 18-41: Qualification and type tests for Type I electrical insulation systems used in rotating electrical machines fed from voltage converters
- Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters aka inverters
IEC 60085: Electrical Insulation – Thermal evaluation and designation
IEC 61857: Electrical Insulation Systems – Procedures for thermal evaluation
- Part 1: General requirements – Low Voltage
- Part 21: Specific requirements for general-purpose models – Wire-wound applications
- Part 22: Specific requirements for encapsulated-coil model – Wire-wound electrical insulation system (EIS)
- Part 31: Applications with a designed life of 5,000 h or less
IEC 61858: Electrical Insulation Systems – Thermal evaluation of modification to an established wire – wound EIS
- Part 1: Wire-wound winding EIS
- Part 2: Form-wound EIS
Please refer to the IEC website for additional information about these test methods, including the scope of each standard or copies of any IEC standards.
To arrange EIS testing, request a quote online now or call 636-949-5835.
UL
UL 1446: Systems of Insulating Materials – General
UL 984: Hermetic Refrigerant Motor – Compressors
- Section 41: Compatibility test
UL 1561: Dry-Type General Purpose and Power Transformers
- Section 12: Coil Insulation
To arrange EIS testing, request a quote online now or call 636-949-5835.
Institute of Electrical / Electronics Engineers [IEEE]
IEEE 117: Standard Test Procedure for Evaluation of Systems of Insulating Materials for Random-Wound AC Electric Machinery
IEEE 1107: Recommended Practice for Thermal Evaluation of Sealed Insulation Systems for AC Electric Machinery Employing Random-Wound Stator Coils
IEEE 1776: Recommended Practice for Thermal Evaluation of Unsealed or Sealed Insulation Systems for AC Electric Machinery Employing Form-Wound Pre-insulated Stator Coils for Machines Rated 15,000 V and Below
- IEEE 1776 merged and replaced IEEE 275 and IEEE 429 in 2009
IEEE 522: Guide for Testing Turn Insulation of Form-Wound Stator Coils for Alternating-Current Electric Machines
IEEE C57.12.60: IEEE Standard Test Procedures for Thermal Evaluation of Insulation Systems for Dry-type Power and Distribution Transformers, Including Open-Wound, Solid-Cast and Resin Encapsulated Transformers
- IEEE C57.12.60 replaced C57.12.56 in 2009
IEEE 259: IEEE Standard Test Procedures for Evaluation of Systems of Insulation for Dry-type Specialty and General Purpose Transformers
Please refer to the IEEE website for additional information about these test methods, including the scope of each standard or copies of any IEEE standards.
To arrange EIS testing, request a quote online now or call 636-949-5835.
