inverter duty motor rewinds - e longo · largest independent electrical-mechanical sales &...
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Largest Independent Electrical-Mechanical Sales & Service Firm in the Tri-State Area
PhiladelphiaServicenter1400F Adams RoadBensalem, PA 19020
Tel: 215-638-1333Fax: 215-638-1366
Linden Servicenter
1625 Pennsylvania Ave.Linden, NJ 07036
Tel: 908-925-2900Fax: 908-925-9427
D A I L Y P I C K U P I N T H E N O R T H E A S T
e-mail: [email protected] Web site: www.elongo.com
LONGO © 2011
New YorkServicenter
829 E. 144th St.Bronx, NY 10454
Tel: 718-585-5330Fax: 718-585-5337
Wharton Servicenter1 Harry Shupe Blvd.Wharton, NJ 07885
Tel: 973-537-0400Fax: 973-537-0404
Service Through Knowledge® Since 1945
INVERTER DUTYMOTOR REWINDS
Specify the Longo Engineered Inverter Duty Rewind (SURGE SHIELD ™) System for your inverter motors which are (or better be) used on all adjustable speed drive (ASD) applications. Modern solid state drives use pulse width modulation (PWM) to vary the voltage/frequency ratio. But PWM drives using IGBT (insulated gate bipolar transistor) switching generate a wave form spike upto 2000 volts which can damage the stator winding!
Longo's exclusive SURGE SHIELD ™ winding system is backed-up by our 3 year warranty. This means that your inverter motor can run safelyand reliably in the face of repetitive up to 20,000 per second voltage surges.
• Inverter-Duty magnet wire resists high frequency pulses, i.e. spikes• Increased insulation:- to ground- on coils and end turns- between phases- between turns• VPI - with epoxy resin• Special impregnation processto exclude voids in insulation - the real “CULPRIT”• End turns get special bracing• Coils are interlaced• DuPont's class “H” NOMEX® throughout
Can your Drive Motors
survive this test?
Siemens · Cutler-Hammer · US Motors · Baldor · WEG · Mody · Delta · TECO · BJM · KSB · AC Tech · FS Elliott · FS Curtis · Lenze· Leeson · Ruhrpumpen · North American · AeroVent/Twin City · Burgmann
Authorized Distributor for
Authorized Factory Service forKSB · Ruhrpumpen · Mody · BJM · FS Elliott
24HOUR
EMERGENCYSERVICE
973-537-0400973-537-0400Three year electrical warranty (Alpha-Gamma™)
applies on all NEMA frame rewinds
S E R V I C E S A L E S E N G I N E E R I N G
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