>>>>>型號:SR489-P5-LO-A20-E 模擬輸出繼電器 用于管理和保護(hù)發(fā)電機(jī)
【功能描述】
489-P5-LO-A20-E 是 GE SR 系列繼電器中的 GE Multilin 繼電器（與 GE Multilin 469 電機(jī)保護(hù)繼電器和 GE Multilin 735 饋線保護(hù)繼電器同屬一個系列）。 489-P5-LO-A20-E 專為發(fā)電機(jī)保護(hù)而設(shè)計，可用于感應(yīng)或同步發(fā)電機(jī)。該裝置可以在 25、50 或 60 Hz 下運(yùn)行。
489-P5-LO-A20-E 設(shè)計有 40 個字符的顯示屏，允許用戶查看值信息、診斷和設(shè)定值。前面板包括數(shù)字鍵盤、狀態(tài)指示燈、升值鍵和鍵、RS232 端口接口以及控制和編程鍵，包括復(fù)位鍵、回車鍵、菜單鍵、菜單向上鍵和菜單向下鍵。這允許在不連接到外部計算機(jī)的情況下進(jìn)行控制。
后面板包括 12 個 RTD 輸入、6 個輸出繼電器、2 個 RS485 通信端口和 4 個 VT 輸入。RTD可現(xiàn)場編程。通信端口可以使用 ModbusRTU 或 DNP 3.0 協(xié)議（或兩者兼而有之），最高可達(dá) 19200 bps。
489-P5-LO-A20-E 的后面板還包括 4 個隔離的 4-20 mA 模擬輸入和輸出以及 7 個可分配的數(shù)字輸入。有 7 個 CT 輸入，用于三相輸出/三相中性線和接地電流檢測，以及一個單獨的安全和濾波器接地。489-P5-LO-A20-E 上的所有輸入均符合 SWC、C37.990 EMI 和 RFI 抗干擾能力。
>>>>>型號:SR489-P5-LO-A20-E 模擬輸出繼電器 用于管理和保護(hù)發(fā)電機(jī)
【英文介紹】
489-P5-LO-A20-E is a GE Multilin relay in the GE SR family of relays (in the same family as the GE Multilin 469 motor protection relay and the GE Multilin 735 feeder protection relay). The 489-P5-LO-A20-E is designed for generator protection and can be used in induction or synchronous generators. The unit can operate at 25, 50 or 60 Hz.
The 489-P5-LO-A20-E is designed with a 40-character display that allows users to view value information, diagnostics, and set values. The front panel includes a numeric keypad, status indicators, appreciation and keys, RS232 port interfaces, and control and programming keys, including reset, Enter, menu, menu Up, and menu Down keys. This allows control without being connected to an external computer.
The rear panel includes 12 RTD inputs, 6 output relays, 2 RS485 communication ports, and 4 VT inputs. RTD is field programmable. Communication ports can use ModbusRTU or DNP 3.0 protocols (or both) up to 19200 bps.
The rear panel of the 489-P5-LO-A20-E also includes four isolated 4-20 mA analog inputs and outputs and seven assignable digital inputs. There are 7 CT inputs for three-phase output/three-phase neutral line and ground current detection, as well as a separate safety and filter ground. All inputs on the 489-P5-LO-A20-E are SWC, C37.990 EMI and RFI compliant.
>>>>>型號:SR489-P5-LO-A20-E 模擬輸出繼電器 用于管理和保護(hù)發(fā)電機(jī)
