电气符号含义（Electrical symbolic meaning）.docVIP

电气符号含义（Electrical symbolic meaning） Electrical symbolic meaning Abstract: if the first contact is to provide the drawings, you may be all kinds of element number on drawings made unintelligible, these numbers are standard, whether it is TOSHIBA or GE design drawings, a component of the same, the number is the same, such as 87 is representative of the differential relay, 51 represents overcurrent relays. These numbers are actually follow the IEEE Std C37.2-1996 standard, this numbering system has been used in all kinds of wiring diagrams, manuals and instructions. Refer to the table on the right, components and functions you can easily check the serial number to each generation table, let you easily become the master! Key words: component number IEEE Std C37.2-1996 If the first contact is to provide the drawings, you may be all kinds of element number on drawings made unintelligible, in fact this number is a standard, either TOSHIBA or GE design drawings, a component of the same, the number is the same, such as 87 is representative of the differential relay, 51 is to represent the flow these numbers are actually relay. Follow the IEEE Std C37.2-1996 standard, this numbering system has been used in all kinds of wiring diagrams, manuals and instructions. Refer to the table on the right, components and functions you can easily find each number represents, let you easily become the master! 1--master element The main component is the control switch and other components. It directly or indirectly through the protective relays, delay relays and other intermediate components, so that equipment is put into or out of operation Note: this number is usually used for manual handling of components. If an electrical or locomotive element has no other function number to indicate, this number may also be used 2--time-delay, starting, or, closing, relay Delay starting or closing relay. The function is to provide the desired delay amount at any time before or after the operation of the