ICS TRIPLEX T8901-01機械設備卡件
假設為0°，是所有角度測量的參考。常見(jiàn)問(wèn)題包括：相位電流與正確位置相差180°（CT極性反轉）相位電流或電壓相差120°或240°（CT/VT相位錯誤）? 相量，相量? [輸入]更多Va PHASOR 0.0%AT 0°Lag Vb PHASOR 0.0%AT 0℃Lag Vc PHASOR 0.01%AT 0°滯后Ia PHASOR0.0%AT 1°滯后Ib PHASSOR 0.0%AT 2°滯后Ic PHASUR 0.0%AT+++（=kW）++GE電力管理469電機管理繼電器5-17 5實(shí)際值5.4 A3學(xué)習數據5.4 A3學(xué)習的數據5.4.1電機啟動(dòng)469學(xué)習加速時(shí)間、啟動(dòng)電流以及，電機啟動(dòng)期間所需的熱容量。該數據是根據最近五次啟動(dòng)累積的。469還保存了上次加速時(shí)間、上次啟動(dòng)電流和上次啟動(dòng)容量的統計數據?？墒褂肧1 469 SETUP\ INSTALLATION \ reset MOTOR information（S1 469設置\安裝\重置電機信息）設置點(diǎn)將該信息重置為默認值。如果起動(dòng)過(guò)程中電機負載相對一致，則可使用學(xué)習加速度時(shí)間微調加速度保護。學(xué)習的加速時(shí)間將是最近五次成功啟動(dòng)中最長(cháng)的時(shí)間。從電機電流從零到大于過(guò)載拾取的轉變，直到線(xiàn)路電流降至過(guò)載拾取水平以下，測量時(shí)間。在電機電流從零過(guò)渡到大于過(guò)載拾取200 ms后，測量學(xué)習起動(dòng)電流。這應確保測量的電流是對稱(chēng)的。顯示的值是最近5次成功啟動(dòng)的平均值。如果少于5次啟動(dòng)，則整個(gè)5次啟動(dòng)的平均值為0。學(xué)習啟動(dòng)容量用于確定是否有足夠的熱容量允許啟動(dòng)（有關(guān)啟動(dòng)禁止的更多信息，請參閱第4–54頁(yè)第4.8.2節：?jiǎn)?dòng)禁止）。如果沒(méi)有足夠的熱容量進(jìn)行啟動(dòng)，將發(fā)出啟動(dòng)禁止。啟動(dòng)將被阻止，直到有足夠的熱容量。5.4.2平均電機負載469可以學(xué)習一段時(shí)間內的平均電機負載。該時(shí)間由S1 469 SETUP \ PREFERENCES \ AVERAGE MOTOR LOAD CALC.PERIOD設置點(diǎn)（默認15分鐘）指定。計算是一個(gè)滑動(dòng)窗口，忽略實(shí)際值5 5.5.2一般計數器469個(gè)一般計數器中的兩個(gè)計數器計算電機啟動(dòng)或啟動(dòng)嘗試的次數，以及為啟動(dòng)給定電機而執行的緊急重啟次數。在排除電機故障時(shí)，這可能是有用的信息。當這些計數器中的任何一個(gè)達到50000時(shí)，該計數器將重置為0。該信息可通過(guò)S1 469 SETUP\ INSTALLATION \ RESET MOTOR information（S1 469設置\安裝\重置電機信息）設置點(diǎn)清除。469個(gè)普通計數器中的另一個(gè)將計數
assumed to be 0° and is the reference for all angle measurements. Common problems include: Phase currents 180° from proper location (CT polarity reversed) Phase currents or voltages 120 or 240° out (CT/VT on wrong phase) ? PHASORS ? [ENTER] for more Va PHASOR 0.0% AT 0°Lag Vb PHASOR 0.0% AT 0°Lag Vc PHASOR 0.0% AT 0°Lag Ia PHASOR 0.0% AT 0°Lag Ib PHASOR 0.0% AT 0°Lag Ic PHASOR 0.0% AT + + + (=kW) + + GE Power Management 469 Motor Management Relay 5-17 5 ACTUAL VALUES 5.4 A3 LEARNED DATA 5 5.4 A3 LEARNED DATA 5.4.1 MOTOR STARTING The 469 learns the acceleration time, the starting current, as well as, the thermal capacity required during motor starts. This data is accumulated based on the last five starts. The 469 also keeps statistics for last acceleration time, last starting current, and last starting capacity. This information can be reset to default using the S1 469 SETUP \ INSTALLATION \ RESET MOTOR INFORMATION setpoint. If motor load during starting is relatively consistent, the LEARNED ACCELERATION TIME may be used to fine tune the acceleration protection. Learned acceleration time will be the longest time of the last five successful starts. The time is measured from the transition of motor current from zero to greater than overload pickup, until line current falls below the overload pickup level. LEARNED STARTING CURRENT is measured 200 ms after the transition of motor current from zero to greater than overload pickup. This should ensure that the measured current is symmetrical. The value displayed is the average of the last 5 successful starts. If there are less than 5 starts, 0s will be averaged in for the full 5 starts. The LEARNED STARTING CAPACITY is used to determine if there is enough thermal capacity to permit a start (refer to Section 4.8.2: START INHIBIT on page 4–54 for more information on start inhibit). If there is not enough thermal capacity for a start, a start inhibit will be issued. Starting will be blocked until there is sufficient thermal capacity. 5.4.2 AVERAGE MOTOR LOAD The 469 can learn the average motor load over a period of time. This time is specified by the S1 469 SETUP \ PREFERENCES \ AVERAGE MOTOR LOAD CALC. PERIOD setpoint (default 15 minutes). The calculation is a sliding window and is ignored ACTUAL VALUES 5 5.5.2 GENERAL COUNTERS Two of the 469 general counters count the number of motor starts or start attempts and the number of Emergency Restarts performed to start a given motor over time. This may be useful information when troubleshooting a motor failure. When either of these counters reaches 50000, that counter will reset to 0. This information can be cleared with the S1 469 SETUP\INSTALLATION\RESET MOTOR INFORMATION setpoint. Another of the 469 General counters will count
