Catalogs >
KONCAR - Electrical Engineering Institute Inc. >
KONCAR-Institute-Thermal Cycle Test

KONCAR-Institute-Thermal Cycle Test
3Pages

Catalog excerpts

TCT specification Configuration: • Modular aluminum chamber that can be configured according to the bar size (up to 4000 mm) • Simultaneously testing of four bars plus three additional bars for measurement accuracy assurance (one bar for temperature measurement and two additional bars for maintaining same condition for the testing bars) • Detailed CFD analysis of the flow inside the chamber ensured a uniform temperature distribution along the bar modular testing chamber Features: • Testing according to the IEEE 1310-1996 and IEC 60034-18-2012 • The heating and cooling temperature range in a regulated chamber (40° C to UPR*) • UPR (Upper Temperature Limit) is determined with bar insulation class • The ability to change temperature speed increase and decrease (1,5 to 3,5 °C/min) • Temperature is controlled based on temperature measurement directly on copper of the reference bar • Regulated power source up to 2500 A • Measurement system enables continuous measurement up to 50 temperatures and all process parameters during cycling • All data measured during cycling are stored in database (data export enabled in .XLS format) Additional info: • Bump test measurement on five positions on a bar include frequency response analysis • High voltage measurement before and after cycling with voltage 1,17 x (2Un + 1000 V) • Dimensions measurement with accuracy ± 0,025 mm KONČAR – Electrical Engineering Institute Inc. Department for rotating machines Fallerovo šetalište 22, 10 000 Zagreb, Croatia Phone: + 385 1 3656 291 Fax: +385 1 3666 377 Web: www.koncar-institut.com Emai

Open the catalog to page 1

THERMAL CYCLE TEST Machine winding is under constant thermo mechanical stress due the intermittent operation of the machine. This is closely related to the expected winding lifetime and thus of great importance for the winding producers and users. Thermal cycling stresses can, to some extent, be replicated and accelerated in laboratory. Such thermal cycle tests (TCT) are performed to ascertain whether a new stator winding insulation system can handle intermittent operation, to evaluate the relative difference between different types of insulations or to investigate degradation processes and...

Open the catalog to page 2