MEDIUM VOLTAGE RING MAIN UNIT
• 1000 CO cycles at rated current and 0.7 p.f. • 5 times close on fault c- Circuit Breaker Standards •IEC-62271-100 •Class M1/E1 • O-0.3 Sec - CO - 3 min - CO cycle d- Other Standards • IEC-62255 for electrical relays • IEC-62271-102 for alternating current earthing switch • IEC 61243-5 for voltage detection system
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