The loss model of the power panelboard is based on the sum of partial power losses from circuit breakers, fusible switches, motor starters, and bus bars with enclosures.
Electrical Equipment Used in Power Panelboard Molded Case Circuit Breakers (MCCBs) Switches Voltage rating: 600 VAC Voltage ratings: 600 or 690 vac Ampere rating: 15 to 1200 amps Ampere rating: 16 to 630 amps Thermal magnetic trip Three poles Three poles J Class-Fuse RK1 Class-Fuse Voltage rating: 600 VAC Voltage ratings: 250 or 600 VAC Ampere ratings:15 to 600 amps Ampere ratings: 70 to 600 amps Single pole Single pole Motor Starters Voltage ratings (Max.
In power panelboard applications, these breakers are rated from 15 to 1200 amps at 600 VAC.
The dimensions of enclosures and bus bars depend on the power panelboard current ratings and the number of disconnecting devices installed (feeder capacity) in the power panel-board.
By substituting for the partial power loss models of electrical equipment in power panelboard previously described
bbr] Bus bar ampere amps rating of power panelboard 1[f.
The power panelboard loss model is valid under the conditions that are shown in Table 7.
Conditions of Power Panelboard Loss Models Location Indoor Maximum operating voltage 600 VAC Frequency 60 Hz Loads Three phase balanced currents Copper bus bar conductivity 98.
The power panelboard is classified by its current rating which is either 250, 400, 600, 800, or 1200 amps and by its dimensions which consist of height, bus bar length, width, and depth.
Bus Bar and Enclosure Losses per Unit Length--Low Voltage Panelboard Bus bar Dimensions, m (ft) Power Panelboard Height Width Phase-to-Phase Ampere Ratings, Separation [I.
Circuit breakers used in power panelboards, motor control centers and switchboards are molded case circuit breakers rated at 600 VAC and between 15 and 2500 amps.