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3BSE038415R1模拟量输入模块
注意:对于欠阻抗启动(“UZ”):除了由参数“RLoad”和“angeload”,反向区域独立于启动器运行。对于过电流启动(“OC”):反向区仅在过电流时运行启动程序(“Istart”)已启动。
二进制输入(“Ext Blk UZ”)阻止操作,无论反向区域的启动模式。
信号输出:Meas Bward。反向区的测量仅在
第一区激活,即“Meas Bward”信号在最迟在第二时间步结束时。时间步长(延迟)
每个激活距离区域的运行时间(参数“X”<>0)由参数“Delay”确定,该参数具有
设置范围为0至10秒,步长为0.01。参数“延迟(4/OR)”也与逻辑相关,该逻辑确定
是否适用于4区或超范围区,即“延迟(4)或”<“延迟(2)”,适用于超范围区域,否则进入区域4。
设定时间必须满足以下关系:
延迟(1)<延迟(2)<延时(3)<时滞(4)<时延(Def),
延迟(或)<延迟(2)。
对多个距离继电器的工作时间进行分级时最短评分时间不应小于断路器操作时间加上150 ms(复位时间+测量系统操作时间+安全裕度)。
建议的定时器设置: 1区:通常瞬时。 2区:“延迟(2)”通常设置为继电器和断路器操作时间、灭弧时间、信号传输时间和公差余量,其等于
约0.25至0.5秒。公差包括:顺序跳闸。
区域3:“延迟(3)”设置为大约2 x“延迟(2)”。
区域4:“延迟(4)”或“延迟(Def)”通常设置为至少4倍延迟(2)。
特殊情况下可能需要设置,这些设置会有很大偏差根据上述建议。
区域1到4的时间步长必须小于“延迟(Def)”。确定区(Def)
最终(或第五)区受相同参数的影响作为低阻抗起动器(即XA、XB、RA、RB、RLoad和角度负载)。
相应的时间步长由参数“延迟”定义(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)’.