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Model ct-7500 operating instructions – Vanguard CT-7500 User Manual

Page 74

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MODEL CT-7500

OPERATING INSTRUCTIONS

Rev 2 Jan 2001

VI

APPENDIX E

Timing Chart for Siemens TCP-149 Circuit Breaker.

Note

Velocity calculation for this breaker requires a formula:

V= 31.5 x (a/b) m/s

AP1= Contact Point

AP2= Contact - 10ms

b= Breaker Stroke

a= Distance between AP1 & AP2