What people are saying - Write a review
We haven't found any reviews in the usual places.
SYMBOLS AND DIAGRAMS
ALTERNATINGCURRENT CONTACTORS AND RELAYS
6 other sections not shown
Other editions - View all
a-c contactors a-c motors adjusted amperes applications arc chute armature assembly brake bus bars cable capacitor cast grids circuit breakers coil coil current connection diagram contact structure contactor ratings contactors and relays continuous current rating control center control circuits control devices control equipment control panel control voltage control-circuit devices copper current flows current-carrying capacity curve drive duty cycle Electrical electrolite electronic enclosed enclosure energized heat horsepower horsepower ratings inch inrush current installation insulating interrupting joint limit switches line contactor load low-voltage machine magnetic control manufacturer master switch material metal motor control mounted National Electrical Code NORMALLY CLOSED NORMALLY OPEN obtained operating overload operation overload oxide phototube plunger pole pushbutton rated voltage rectifier relay coil resistance resistor rheostat secondary Selenium shaft shown in Fig solenoid speed standard starters symbols Table tactor temperature rise Thrustor mechanism thyratron tion torque tube typical unit volts wiring wound-rotor motors