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Compact® NSF and NSJ 150 to 600 A Circuit Breakers
Section 13—Supplementary Technical Information
© 1995–2003 Schneider Electric All Rights Reserved
72
Test Sequences
Sequence Category of Devices Tests
1–General Characteristics All Circuit Breakers
• Trip Unit Control
• Dielectric Properties
• Mechanical and Electrical Endurance
• Overload
• Dielectric Voltage Withstand
• Temperature Rise
• 145% Calibration (3 Phases Test)
2–Breaking Capacity During Operation All Circuit Breakers
• Breaking Capacity During Operation (Ot-CO-t-CO)
• Dielectric Voltage Withstand
• Temperature Rise
• 145% Calibration (3 Phases Test)
3–Ultimate Breaking Capacity (Icu)
A
B if Icu > Icw
• 200% Calibration (Each Pole Separately)
• Ultimate Breaking Capacity (O-t-CO)
• Dielectric Voltage Withstand
• 250% Calibration (Each Pole Separately)
4–Admissible Short Duration Current (Icw) B
• 200% Calibration (Each Pole Separately)
• Short-time Current Withstand
• Temperature Rise
• Breaking Capacity at Admissible Short-time Current (O-t-CO)
• Dielectric Voltage Withstand
• 200% Calibration (Each Pole Separately)
Combined Sequence
• Icw = Ics Replaces Sequences 2
and 4
• Icw = Ics = Icu Replaces
Sequences 2, 3 and 4
• 200% Calibration (Each Pole Separately)
• Short-time Current Withstand Icw
• Breaking Capacity at Ics (O-CO-CO) at Maximum Relay Temp.
• Dielectric Voltage Withstand
• Temperature Rise
• 200% Calibration (Each Pole Separately)