ICS TRIPLEX T8901-01機(jī)械設(shè)備卡件
假設(shè)為0°，是所有角度測(cè)量的參考。常見問題包括：相位電流與正確位置相差180°（CT極性反轉(zhuǎn)）相位電流或電壓相差120°或240°（CT/VT相位錯(cuò)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(jī)管理繼電器5-17 5實(shí)際值5.4 A3學(xué)習(xí)數(shù)據(jù)5.4 A3學(xué)習(xí)的數(shù)據(jù)5.4.1電機(jī)啟動(dòng)469學(xué)習(xí)加速時(shí)間、啟動(dòng)電流以及，電機(jī)啟動(dòng)期間所需的熱容量。該數(shù)據(jù)是根據(jù)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(tǒng)計(jì)數(shù)據(jù)?？墒褂肧1 469 SETUP\ INSTALLATION \ reset MOTOR information（S1 469設(shè)置\安裝\重置電機(jī)信息）設(shè)置點(diǎn)將該信息重置為默認(rèn)值。如果起動(dòng)過程中電機(jī)負(fù)載相對(duì)一致，則可使用學(xué)習(xí)加速度時(shí)間微調(diào)加速度保護(hù)。學(xué)習(xí)的加速時(shí)間將是最近五次成功啟動(dòng)中最長的時(shí)間。從電機(jī)電流從零到大于過載拾取的轉(zhuǎn)變，直到線路電流降至過載拾取水平以下，測(cè)量時(shí)間。在電機(jī)電流從零過渡到大于過載拾取200 ms后，測(cè)量學(xué)習(xí)起動(dòng)電流。這應(yīng)確保測(cè)量的電流是對(duì)稱的。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(xí)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(qǐng)參閱第4–54頁第4.8.2節(jié)：啟動(dòng)禁止）。如果沒有足夠的熱容量進(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(jī)負(fù)載469可以學(xué)習(xí)一段時(shí)間內(nèi)的平均電機(jī)負(fù)載。該時(shí)間由S1 469 SETUP \ PREFERENCES \ AVERAGE MOTOR LOAD CALC.PERIOD設(shè)置點(diǎn)（默認(rèn)15分鐘）指定。計(jì)算是一個(gè)滑動(dòng)窗口，忽略實(shí)際值5 5.5.2一般計(jì)數(shù)器469個(gè)一般計(jì)數(shù)器中的兩個(gè)計(jì)數(shù)器計(jì)算電機(jī)啟動(dòng)或啟動(dòng)嘗試的次數(shù)，以及為啟動(dòng)給定電機(jī)而執(zhí)行的緊急重啟次數(shù)。在排除電機(jī)故障時(shí)，這可能是有用的信息。當(dāng)這些計(jì)數(shù)器中的任何一個(gè)達(dá)到50000時(shí)，該計(jì)數(shù)器將重置為0。該信息可通過S1 469 SETUP\ INSTALLATION \ RESET MOTOR information（S1 469設(shè)置\安裝\重置電機(jī)信息）設(shè)置點(diǎn)清除。469個(gè)普通計(jì)數(shù)器中的另一個(gè)將計(jì)數(shù)
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
