ICS TRIPLEX 9401機械備件,工業(yè)備件
“電機銘牌電壓：”4160“n電壓傳感n[輸入]更多VT連接類型：無范圍：開式三角形、星形、無啟用單VT操作：關閉范圍：AN、BN、CN、OFF或AB、CB、OFF。僅當VT連接類型為Y型或開放式Delta電壓互感器比率：35.00:1范圍：1.00:1至300.00:1，步長為0.01電機銘牌電壓：4000 V范圍：100至36000 V，步長為1 ENTER ESCAPE（輸入退出）電源系統在此處輸入標稱系統頻率。這些設定值允許469確定內部采樣率以獲得最大精度。當標稱系統頻率設置為“可變”時，469可用于變頻驅動器。所有元件都以相同的方式工作，但以下情況除外：負序電流與正序電流的比率計算范圍為0至30%，而不是40%，如果電壓波形近似正弦，電壓和功率元件將正常工作。來自脈寬調制驅動器的未濾波電壓波形不能被精確測量；然而，電流波形是近似正弦的并且可以精確地測量。所有電流元件將正常工作。然而，請注意，使用可變頻率時，欠壓和欠頻元件不會立即工作。如果選擇“變量”，當液位接近閾值時，過濾算法會將跳閘和報警時間增加270 ms。如果液位大大超過閾值，跳閘和報警時間將減少，直到與編程延遲相匹配。這種增加時間的例外情況是短路、接地故障和差動元件，這些元件將按照規(guī)范跳閘。如果給定電廠的相位旋轉順序是ACB而不是標準ABC，則可使用系統相位順序設定值來適應此情況。該設定值允許469正確計算相位反轉、負序和功率量。SPEED2 PHASE SEQUENCE（速度2相位序列）可編程為適應速度2時的反向電機旋轉。4.3.4串行通信控制路徑：設定點×S2系統設置×串行通信控制如果啟用，電機可以通過三個469通信端口中的任何一個啟動和停止。有關命令格式，請參閱第6章：通信。發(fā)出停止命令時，R1跳閘繼電器啟動1秒，以完成斷路器應用的跳閘線圈電路，或斷開接觸器應用的接觸線圈電路。當發(fā)出啟動命令時，指定用于啟動控制的輔助繼電器激活1秒，以完成斷路器應用的閉合線圈電路或接觸器應用的啟動控制電路。接觸器密封觸點將用于維護電路。有關發(fā)布星形設定點4的詳細信息，請參見圖4–2：降低電壓啟動電流特性如果使用此功能，則啟動器狀態(tài)開關輸入必須來自公共控制觸點或來自降低電壓接觸器和全電壓接觸器的輔助“a”觸點的并聯組合或輔助“b”觸點的串聯組合。一旦開始轉換，469假設電機仍在運行至少2秒。如果電機電流在開路過渡期間變?yōu)榱?，這將防止469識別額外的啟動。圖4–3：降壓起動器輸入808725A1.CDR電機電流（%FLA）當電流低于過渡電平和/或定時器到期時，輔助繼電器激活1秒過渡時間時間表示打開過渡3 x FLA過渡水平FLA注釋808723A1.CDR全電壓輔助“a”降低電壓輔助“B”啟動器狀態(tài)開關輸入（設定值=“啟動器輔助a”）D16 D23降低電壓啟動器輔助“a”狀態(tài)輸入降低電壓啟動器輔“B”狀態(tài)輸入減少VOLTAGE AUXILIARY（電壓輔助）'b'滿電壓輔助'b'D16 D23起動機狀態(tài)開關輸入（設定點='起動機輔助b'）GE Multilin 469電機管理繼電器4-17 4設定點4.4 S3數字輸入4 4.4S3數字輸入4.4.1描述469繼電器有九（9）個數字輸入。五個數字輸入已預先指定為具有特定功能的開關。五個預先分配的數字輸入中的四個始終正常工作，并且沒有與之相關的任何設定點消息。第五個，起動機狀態(tài)，可配置為“a”或“b”輔助觸點。其余四個數字輸入是可分配的；也就是說，輸入用于的功能可以從多個不同的功能中選擇。其中一些功能非常具體，其他功能可以編程以適應用戶需求。如果啟用雙速電機功能
" MOTOR NAMEPLATE VOLTAGE: "4160" n VOLTAGE SENSING n [ENTER] for more VT CONNECTION TYPE: None Range: Open Delta, Wye, None ENABLE SINGLE VT OPERATION: OFF Range: AN, BN, CN, OFF or AB, CB, OFF. Seen only if VT Connection Type is Wye or Open Delta VOLTAGE TRANSFORMER RATIO: 35.00:1 Range: 1.00:1 to 300.00:1 in steps of 0.01 MOTOR NAMEPLATE VOLTAGE: 4000 V Range: 100 to 36000 V in steps of 1 ENTER ESCAPE e e MESSAGE ESCAPE MESSAGE ESCAPE MESSAGE ESCAPE 4-14 469 Motor Management Relay GE Multilin 4.3 S2 SYSTEM SETUP 4 SETPOINTS 4 4.3.3 POWER SYSTEM PATH: SETPOINTS ?× S2 SYSTEM SETUP ?× POWER SYSTEM Enter the nominal system frequency here. These setpoints allow the 469 to determine the internal sampling rate for maximum accuracy. The 469 may be used on variable frequency drives when the NOMINAL SYSTEM FREQUENCY is set to "Variable". All of the elements function in the same manner with the following exceptions: the ratio of negative to positive sequence current is calculated from 0 to 30%, not 40%, and the voltage and power elements will work properly if the voltage waveform is approximately sinusoidal. An unfiltered voltage waveform from a pulse width modulated drive cannot be measured accurately; however, the current waveform is approximately sinusoidal and can be measured accurately. All current elements will function properly. Note, however, that undervoltage and underfrequency elements will not work instantaneously using variable frequency. If "Variable" is chosen, the filtering algorithm increases the trip and alarm times by up to 270 ms when the level is close to the threshold. If the level exceeds the threshold by a significant amount, trip and alarm times will decrease until they match the programmed delay. The exceptions to this increased time are the short circuit, ground fault, and differential elements which will trip as per specification. If the sequence of phase rotation for a given plant is ACB rather than the standard ABC, the SYSTEM PHASE SEQUENCE setpoint may be used to accommodate this. This setpoint allows the 469 to properly calculate phase reversal, negative sequence, and power quantities. The SPEED2 PHASE SEQUENCE can be programmed to accommodate the reversed motor rotation at Speed2. 4.3.4 SERIAL COMMUNICATION CONTROL PATH: SETPOINTS ?× S2 SYSTEM SETUP ?× SERIAL COM. CONTROL If enabled, motor starting and stopping is possible via any of the three 469 communication ports. Refer to Chapter 6: COMMUNICATIONS for command formats. When a stop command is issued, the R1 Trip relay is activated for 1 second to complete the trip coil circuit for a breaker application or break the contact coil circuit for a contactor application. When a start command is issued, the auxiliary relay assigned for starting control is activated for 1 second to complete the close coil circuit for a breaker application or complete the start control circuit for a contactor application. A contactor sealing contact would be used to maintain the circuit. Foir details on issuing a starSETPOINTS 4 Figure 4–2: REDUCED VOLTAGE STARTING CURRENT CHARACTERISTIC If this feature is used, the Starter Status Switch input must be either from a common control contact or a parallel combination of Auxiliary ‘a’ contacts or a series combination of Auxiliary ‘b’ contacts from the reduced voltage contactor and the full voltage contactor. Once transition is initiated, the 469 assumes the motor is still running for at least 2 seconds. This prevents the 469 from recognizing an additional start if motor current goes to zero during an open transition. Figure 4–3: REDUCED VOLTAGE STARTER INPUTS 808725A1.CDR MOTOR AMPS (% FLA) When the currrent falls below the Transition Level and/or the Timer expires, the Auxiliary Relay activates for 1 second Transition Time TIME signifies Open Transition 3 x FLA Transition Level FLA NOTE 808723A1.CDR FULL VOLTAGE AUXILIARY ‘a’ REDUCED VOLTAGE AUXILIARY ‘a’ STARTER STATUS SWITCH INPUT (Setpoint = ‘Starter Auxiliary A’) D16 D23 REDUCED VOLTAGE STARTER AUXILIARY ‘A’ STATUS INPUT REDUCED VOLTAGE STARTER AUXILIARY ‘B’ STATUS INPUT REDUCED VOLTAGE AUXILIARY ‘b’ FULL VOLTAGE AUXILIARY ‘b’ D16 D23 STARTER STATUS SWITCH INPUT (Setpoint = ‘Starter Auxiliary B’) GE Multilin 469 Motor Management Relay 4-17 4 SETPOINTS 4.4 S3 DIGITAL INPUTS 4 4.4S3 DIGITAL INPUTS 4.4.1 DESCRIPTION The 469 relay has nine (9) digital inputs. Five of the digital inputs have been pre-assigned as switches having a specific function. Four of the five pre-assigned digital inputs are always functional and do not have any setpoint messages associated with them. The fifth, Starter Status, may be configured for either an ’a’ or ’b’ auxiliary contact. The remaining four digital inputs are assignable; that is to say, the function that the input is used for may be chosen from one of a number of different functions. Some of those functions are very specific, others may be programmed to adapt to the user requirements. If the Two-Speed Motor feature is enabled, Assignable Input 4 will be dedicated as the Two-Speed Motor Monitor. a) ACCESS SWITCH Terminals C1 and C2 must be shorted to allow changing of any setpoint values. This
