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REXROTH BTV30.2PA-24R-55C-D-NW驱动器
瞬时剩余过电流保护EFPIOC具有较低的瞬时过电流和较短的跳闸时间，以允许使用瞬时接地故障保护，其范围限制在最小电源阻抗下线路的典型80%以下。EFPIOC可配置为测量三相电流输入的剩余电流或单独电流输入的电流。通过激活输入BLOCK可以阻止EFPIOC。四步剩余电流保护、零序和负序方向EF4PTOC。四步剩余过电流保护EF4PTOC具有独立于每个步骤的反时限或定时限延时。所有IEC和ANSI延时特性以及可选的用户定义特性都可用。对于每个步骤，EF4PTOC可以单独设置为定向或非定向。IDir、UPol和IPol可以独立选择为零序或负序。每一步可单独设置二次谐波闭锁。EF4PTOC可用作相对地故障的主保护。EF4PTOC还可用于提供系统备份，例如，在一次保护因通信或电压互感器电路故障而停用的情况下。在允许或闭锁远程保护方案中，定向操作可以与相应的通信逻辑结合在一起。电流反向和弱端馈电功能也可用。EF4PTOC可配置为测量来自三相电流输入的剩余电流或来自单独电流输入的电流。可为该功能设置二次谐波闭锁电平，并可用于单独闭锁每个步骤
四步负序过流保护
NS4PTOC四步负序过电流保护（NS4PTOC）具有独立于每一步的反时限或定时限延时。所有IEC和ANSI延时特性以及可选的用户定义特性都可用。定向功能为电压极化或双极化。对于每个步骤，NS4PTOC可以单独设置为定向或非定向。NS4PTOC可作为不对称故障的主保护；相间短路、相间接地短路和单相接地故障。NS4PTOC还可用于提供系统备份，例如，在一次保护因通信或电压互感器电路故障而停用的情况下。在允许或闭锁远程保护方案中，定向操作可以与相应的通信逻辑结合在一起。可以使用与定向零序电流相同的逻辑。电流反转和弱化馈电功能可用。灵敏方向剩余电流和功率保护SDEPSDE在隔离网络或高阻抗接地网络中，接地故障电流明显小于短路电流。除此之外，故障电流的大小几乎与网络中的故障位置无关。保护装置可以选择使用剩余电流或剩余功率元件3U0·3I0·cos j，用于维持短路容量的运行量。还有一个非定向3I0步骤和一个3U0过压跳闸步骤。不需要特定的灵敏电流输入。SDEPSDE可以设置为IBase的0.25%。
Instantaneous residual overcurrent protection EFPIOC
The Instantaneous residual overcurrent protection EFPIOC has a low transient overreach and short tripping times to allow the use for instantaneous earth-fault protection, with the reach limited to less than the typical eighty percent of the line at minimum source impedance. EFPIOC can be configured to measure the residual current from the three-phase current inputs or the current from a separate current input. EFPIOC can be blocked by activating the input BLOCK. Four step residual overcurrent protection, zero sequence and negative sequence direction EF4PTOC The four step residual overcurrent protection EF4PTOC has an inverse or definite time delay independent for each step separately. All IEC and ANSI time-delayed characteristics are available together with an optional user defined characteristic. EF4PTOC can be set directional or non-directional independently for each of the steps. IDir, UPol and IPol can be independently selected to be either zero sequence or negative sequence. Second harmonic blocking can be set individually for each step. EF4PTOC can be used as main protection for phase-to-earth faults. EF4PTOC can also be used to provide a system back-up for example, in the case of the primary protection being out of service due to communication or voltage transformer circuit failure. Directional operation can be combined together with corresponding communication logic in permissive or blocking teleprotection scheme. Current reversal and weak-end infeed functionality are available as well. EF4PTOC can be configured to measure the residual current from the three-phase current inputs or the current from a separate current input.Second harmonic blocking level can be set for the function and can be used to block each step individually
Four step negative sequence overcurrent protection
NS4PTOC Four step negative sequence overcurrent protection (NS4PTOC) has an inverse or definite time delay independent for each step separately. All IEC and ANSI time delayed characteristics are available together with an optional user defined characteristic. The directional function is voltage polarized or dual polarized. NS4PTOC can be set directional or non-directional independently for each of the steps. NS4PTOC can be used as main protection for unsymmetrical fault; phase-phase short circuits, phase-phase-earth short circuits and single phase earth faults. NS4PTOC can also be used to provide a system back-up for example, in the case of the primary protection being out of service due to communication or voltage transformer circuit failure. Directional operation can be combined together with corresponding communication logic in permissive or blocking teleprotection scheme. The same logic as for directional zero sequence current can be used. Current reversal and weakend infeed functionality are available. Sensitive directional residual overcurrent and power protection SDEPSDE In isolated networks or in networks with high impedance earthing, the earth fault current is significantly smaller than the short circuit currents. In addition to this, the magnitude of the fault current is almost independent on the fault location in the network. The protection can be selected to use either the residual current or residual power component 3U0·3I0·cos j, for operating quantity with maintained short circuit capacity. There is also available one nondirectional 3I0 step and one 3U0 overvoltage tripping step. No specific sensitive current input is needed.SDEPSDE can be set as low 0.25% of IBase.
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