 | National Electrical Manufacturers Association - Electric switchgear - 1927 - 140 pages
...making device. (71) DC. Line Emergency Circuit Breaker or Contactor is one used to interrupt a de. power circuit under emergency conditions. (72) DC....this circuit under emergency conditions. (73) Load Limiting Resistor Shunting Circuit Breaker or Contactor is one used to insert a step of load limiting... | |
 | Rudolf F. Graf - Language Arts & Disciplines - 1999 - 540 pages
...capacitor designed essentially for application with a direct voltage. dc circuit breaker — A device used to close and interrupt a dc power circuit under...normal conditions or to interrupt this circuit under fault or emergency conditions. dc component — The average value of a signal. In television it represents... | |
 | National Electrical Manufacturers Association - Electric apparatus and appliances - 1928 - 372 pages
...controlled tends to exceed a safe operating value. (69) Reserved for future application. (70) Motor Operated Rheostat is one used primarily to vary the...this circuit under emergency conditions. (73) Load Limiting Resistor Shunting Circuit Breaker or Contactor is one used to insert a step of load limiting... | |
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... circuit, or to switch a space heater in circuit, or to switch a light, or regenerative, load resistor of a power rectifier or other... 