Choice of a circuit-breaker The choice of a CB is made in terms of: · Electrical characteristics of the installation for which the CB is intended · Its eventual environment: ambient temperature, in a kiosk or switchboard enclosure, climatic conditions, etc. · ...
Tuesday, March 11, 2014
Low Voltage Circuit Breakers
Based on IEC 60947-2 (LV switchgear and controlgear - Part 2: Circuit breakers): In (Rated current) The rated continuous / uninterrupted current that the circuit breaker can carry. Icm (Rated short-circuit making current) The short-circuit current that the circuit breaker can withstand as it is closing where the act of closing initiates the...
Sunday, March 9, 2014
Power factor calculation
The power factor correction capacitor should be connected in parallel to each phase load. Single phase circuit calculation Power factor calculation: PF = |cos φ| = 1000 × P(kW) / (V(V) × I(A)) Apparent power calculation: |S(kVA)| = V(V) × I(A) / 1000 Reactive power calculation: Q(kVAR) = √(|S(kVA)|2 - P(kW)2) Power factor...
Wednesday, March 5, 2014
Electronics & Electrical Engineering
BYC. JAMES ERICKSON Retired Principal Consultant, E. I. du Pont de Nemours & Co., Inc.CHARLES D. POTTS Retired Project Engineer, E. I. du Pont de Nemours & Co., Inc. BYRON M. JONES Consulting Engineer, Assistant Professor of Electrical Engineering,University of Wisconsin—Platteville.DOWNLOAD :http://www2.hcmuaf.edu.vn/data/phamducdung/thamkhao/Mark's%20Standard-Handbook/Electronics.pdf ...
Tuesday, March 4, 2014
Thursday, February 27, 2014
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