產(chǎn)品內(nèi)容介紹
REXROTH BTV30.2PA-24R-55C-D-NW驅(qū)動(dòng)器
瞬時(shí)剩余過(guò)電流保護(hù)EFPIOC具有較低的瞬時(shí)過(guò)電流和較短的跳閘時(shí)間，以允許使用瞬時(shí)接地故障保護(hù)，其范圍限制在最小電源阻抗下線路的典型80%以下。EFPIOC可配置為測(cè)量三相電流輸入的剩余電流或單獨(dú)電流輸入的電流。通過(guò)激活輸入BLOCK可以阻止EFPIOC。四步剩余電流保護(hù)、零序和負(fù)序方向EF4PTOC。四步剩余過(guò)電流保護(hù)EF4PTOC具有獨(dú)立于每個(gè)步驟的反時(shí)限或定時(shí)限延時(shí)。所有IEC和ANSI延時(shí)特性以及可選的用戶定義特性都可用。對(duì)于每個(gè)步驟，EF4PTOC可以單獨(dú)設(shè)置為定向或非定向。IDir、UPol和IPol可以獨(dú)立選擇為零序或負(fù)序。每一步可單獨(dú)設(shè)置二次諧波閉鎖。EF4PTOC可用作相對(duì)地故障的主保護(hù)。EF4PTOC還可用于提供系統(tǒng)備份，例如，在一次保護(hù)因通信或電壓互感器電路故障而停用的情況下。在允許或閉鎖遠(yuǎn)程保護(hù)方案中，定向操作可以與相應(yīng)的通信邏輯結(jié)合在一起。電流反向和弱端饋電功能也可用。EF4PTOC可配置為測(cè)量來(lái)自三相電流輸入的剩余電流或來(lái)自單獨(dú)電流輸入的電流。可為該功能設(shè)置二次諧波閉鎖電平，并可用于單獨(dú)閉鎖每個(gè)步驟
四步負(fù)序過(guò)流保護(hù)
NS4PTOC四步負(fù)序過(guò)電流保護(hù)（NS4PTOC）具有獨(dú)立于每一步的反時(shí)限或定時(shí)限延時(shí)。所有IEC和ANSI延時(shí)特性以及可選的用戶定義特性都可用。定向功能為電壓極化或雙極化。對(duì)于每個(gè)步驟，NS4PTOC可以單獨(dú)設(shè)置為定向或非定向。NS4PTOC可作為不對(duì)稱故障的主保護(hù)；相間短路、相間接地短路和單相接地故障。NS4PTOC還可用于提供系統(tǒng)備份，例如，在一次保護(hù)因通信或電壓互感器電路故障而停用的情況下。在允許或閉鎖遠(yuǎn)程保護(hù)方案中，定向操作可以與相應(yīng)的通信邏輯結(jié)合在一起?？梢允褂门c定向零序電流相同的邏輯。電流反轉(zhuǎn)和弱化饋電功能可用。靈敏方向剩余電流和功率保護(hù)SDEPSDE在隔離網(wǎng)絡(luò)或高阻抗接地網(wǎng)絡(luò)中，接地故障電流明顯小于短路電流。除此之外，故障電流的大小幾乎與網(wǎng)絡(luò)中的故障位置無(wú)關(guān)。保護(hù)裝置可以選擇使用剩余電流或剩余功率元件3U0·3I0·cos j，用于維持短路容量的運(yùn)行量。還有一個(gè)非定向3I0步驟和一個(gè)3U0過(guò)壓跳閘步驟。不需要特定的靈敏電流輸入。SDEPSDE可以設(shè)置為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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