ICS TRIPLEX T8901-01机械设备卡件
假设为0°，是所有角度测量的参考。常见问题包括：相位电流与正确位置相差180°（CT极性反转）相位电流或电压相差120°或240°（CT/VT相位错误）❙ 相量，相量❙ [输入]更多Va PHASOR 0.0%AT 0°Lag Vb PHASOR 0.0%AT 0℃Lag Vc PHASOR 0.01%AT 0°滞后Ia PHASOR0.0%AT 1°滞后Ib PHASSOR 0.0%AT 2°滞后Ic PHASUR 0.0%AT+++（=kW）++GE电力管理469电机管理继电器5-17 5实际值5.4 A3学习数据5.4 A3学习的数据5.4.1电机启动469学习加速时间、启动电流以及，电机启动期间所需的热容量。该数据是根据最近五次启动累积的。469还保存了上次加速时间、上次启动电流和上次启动容量的统计数据。可使用S1 469 SETUP\ INSTALLATION \ reset MOTOR information（S1 469设置\安装\重置电机信息）设置点将该信息重置为默认值。如果起动过程中电机负载相对一致，则可使用学习加速度时间微调加速度保护。学习的加速时间将是最近五次成功启动中最长的时间。从电机电流从零到大于过载拾取的转变，直到线路电流降至过载拾取水平以下，测量时间。在电机电流从零过渡到大于过载拾取200 ms后，测量学习起动电流。这应确保测量的电流是对称的。显示的值是最近5次成功启动的平均值。如果少于5次启动，则整个5次启动的平均值为0。学习启动容量用于确定是否有足够的热容量允许启动（有关启动禁止的更多信息，请参阅第4–54页第4.8.2节：启动禁止）。如果没有足够的热容量进行启动，将发出启动禁止。启动将被阻止，直到有足够的热容量。5.4.2平均电机负载469可以学习一段时间内的平均电机负载。该时间由S1 469 SETUP \ PREFERENCES \ AVERAGE MOTOR LOAD CALC.PERIOD设置点（默认15分钟）指定。计算是一个滑动窗口，忽略实际值5 5.5.2一般计数器469个一般计数器中的两个计数器计算电机启动或启动尝试的次数，以及为启动给定电机而执行的紧急重启次数。在排除电机故障时，这可能是有用的信息。当这些计数器中的任何一个达到50000时，该计数器将重置为0。该信息可通过S1 469 SETUP\ INSTALLATION \ RESET MOTOR information（S1 469设置\安装\重置电机信息）设置点清除。469个普通计数器中的另一个将计数
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
