《国外电气图纸的编号》.pdf

TOSHIBA GE 87 51 IEEE Std C37.2 1996 1--master element 2--time-delay starting or closing relay 48 6279 82 3--checking or interlocking relay 4--master contactor 1 5--stopping device (86 ) 6--starting circuit breaker 7--rate-of-change relay 63 8--control power disconnecting device ( ) 9--reversing device 10--unit sequence switch 11--multifunction device 3 2 12--overspeed device 13--synchronous-speed device 14--underspeed device 15--speed or frequency matching device 16--not used 17--shunting or discharge switch ( 6 ) 18--accelerating or decelerating device 19--starting-to-running transition contactor - 20--electrically operated valve ( ) 21--distance relay 22--equalizer circuit breaker 23--temperature control device ( ) 24--volts per hertz relay / 25--synchronizing or synchronism-check relay 26--apparatus thermal device 27--under voltage relay 28--fl