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3BSE038415R1模擬量輸入模塊
注意：對(duì)于欠阻抗啟動(dòng)（“UZ”）：除了由參數(shù)“RLoad”和“angeload”，反向區(qū)域獨(dú)立于啟動(dòng)器運(yùn)行。對(duì)于過電流啟動(dòng)（“OC”）：反向區(qū)僅在過電流時(shí)運(yùn)行啟動(dòng)程序（“Istart”）已啟動(dòng)。
二進(jìn)制輸入（“Ext Blk UZ”）阻止操作，無論反向區(qū)域的啟動(dòng)模式。
信號(hào)輸出：Meas Bward。反向區(qū)的測量僅在
第一區(qū)激活，即“Meas Bward”信號(hào)在最遲在第二時(shí)間步結(jié)束時(shí)。時(shí)間步長（延遲）
每個(gè)激活距離區(qū)域的運(yùn)行時(shí)間（參數(shù)“X”<>0）由參數(shù)“Delay”確定，該參數(shù)具有
設(shè)置范圍為0至10秒，步長為0.01。參數(shù)“延遲（4/OR）”也與邏輯相關(guān)，該邏輯確定
是否適用于4區(qū)或超范圍區(qū)，即“延遲（4）或”＜“延遲（2）”，適用于超范圍區(qū)域，否則進(jìn)入?yún)^(qū)域4。
設(shè)定時(shí)間必須滿足以下關(guān)系：
延遲（1）＜延遲（2）＜延時(shí)（3）＜時(shí)滯（4）＜時(shí)延（Def），
延遲（或）<延遲（2）。
對(duì)多個(gè)距離繼電器的工作時(shí)間進(jìn)行分級(jí)時(shí)最短評(píng)分時(shí)間不應(yīng)小于斷路器操作時(shí)間加上150 ms（復(fù)位時(shí)間+測量系統(tǒng)操作時(shí)間+安全裕度）。
建議的定時(shí)器設(shè)置： 1區(qū)：通常瞬時(shí)。 2區(qū)：“延遲（2）”通常設(shè)置為繼電器和斷路器操作時(shí)間、滅弧時(shí)間、信號(hào)傳輸時(shí)間和公差余量，其等于
約0.25至0.5秒。公差包括：順序跳閘。
區(qū)域3:“延遲（3）”設(shè)置為大約2 x“延遲（2）”。
區(qū)域4:“延遲（4）”或“延遲（Def）”通常設(shè)置為至少4倍延遲（2）。
特殊情況下可能需要設(shè)置，這些設(shè)置會(huì)有很大偏差根據(jù)上述建議。
區(qū)域1到4的時(shí)間步長必須小于“延遲（Def）”。確定區(qū)（Def）
最終（或第五）區(qū)受相同參數(shù)的影響作為低阻抗起動(dòng)器（即XA、XB、RA、RB、RLoad和角度負(fù)載）。
相應(yīng)的時(shí)間步長由參數(shù)“延遲”定義(Def)。
Note that:
for underimpedance starting (‘UZ’):
With the exception of the load discrimination defined by the
parameters ‘RLoad’ and ‘AngleLoad’, the reverse zone
operates independently of the starters.
for overcurrent starting (‘OC’):
The reverse zone is only in operation when an overcurrent
starter (‘Istart’) has picked up.
the binary input (‘Ext Blk UZ’) blocks operation regardless of
the starter mode for the reverse zone.
Signal output: Meas Bward.
Measurement of the reverse zone only takes place while the
first zone is active, i.e. the ‘Meas Bward’ signal resets at the
latest at the end the second time step.Time steps
(Delay)
The operating time of every activated distance zone (parameter
‘X’ <> 0) is determined by the parameter ‘Delay’, which has a
setting range of 0 to 10 s in steps of 0.01. The parameter
‘Delay (4/OR)’ is also associated with a logic, which determines
whether it applies to Zone 4 or to the overreaching zone, i.e. if
‘Delay (4/OR)’ < ‘Delay (2)’, it applies to the overreaching zone,
otherwise to Zone 4.
The set times must satisfy the following relationships:
Delay (1) < Delay (2) < Delay (3) < Delay (4) < Delay(Def),
Delay (OR) < Delay (2).
When grading the operating times of several distance relays, the
minimum grading time should not be less than the sum of the
circuit-breaker operating time plus 150 ms (reset time + operating time of the measuring system + safety margin).
Recommended timer settings:
Zone 1: normally instantaneous.
Zone 2: 'Delay (2)’ is normally set to the sum of relay and
circuit-breaker operating times, arc extinction time, signal
transmission time and a tolerance margin, which amounts to
about 0.25 to 0.5 s. The tolerance includes an allowance for
sequential tripping.
Zone 3: 'Delay (3)’ is set to about 2 x ‘Delay (2)’.
Zone 4: 'Delay (4)’ or ‘Delay(Def)’ is normally set to at least
4 x ‘Delay (2)’.
Special cases may require settings, which deviate considerably
from the above recommendations.
The time steps of zones 1 to 4 must have settings less than
‘Delay(Def)’.Definitive zone
(Def)
The definitive (or fifth) zone is subject to the same parameters
as the underimpedance starters (i.e. XA, XB, RA, RB, RLoad
and AngleLoad).
The corresponding time step is defined by the parameter ‘Delay
(Def)’.
