NO EXTERNAL DEFECTS CAN BE FOUND IN THE VISUAL INSPECTION.
TERMINAL STRENGTH:
FIXED INDUCTORS,ONE END OF THE ELECTRODE WITH 0.45KG PULLING FORCE,GUIDED THE NEEDLE DOES NOT FALL OFF.
INSULATING RESISTANCE:
THE INSULATION RESISTANCE SHOULD BE OVER 1000MΩ WHEN D.C.100V IS APPLIED TO THE WINDING –CORE. MEANWHILE NO STRUCTURE AND ELECTRIC DEFECTS SHOULD BE FOUND FOR 1 MINUTE.
HUMIDITY TEST:
NDUCTANCE DEVIATION IS WITHIN ±10.0％ AFTER 1 HOUR SWEEPING VIBRATION IN EACH THREE DIRECTIONS. NAMELY, FREQUENCY IS10～55Hz ANDTHE AMPLITUDE OF 1MINUTE CYCLE IS 1.5mm .
VIBRATION TEST:
TEMPERTURE:80℃±2℃,APPLIED CURRENT:RATED CURRENT;TIME:1000HOURS MEASURED AT ROMM AMBIENT TEMPERATURE AFTER PLACING FOR 24 HOURS.NDUCTANCE DEVIATION IS WITHIN ±10.0%
