MultPUx: Multiplier for scaling of the current setting value. If a binary input signal
(ENMULTx) is activated the current operation level is multiplied by this setting
constant.
txMin
: Minimum operation time for inverse time characteristics. At high currents the
inverse time characteristic might give a very short operation time. By setting this
parameter the operation time of the step can never be shorter than the setting.
IMinx
Operate me
Current
tx
txMin
IEC10000058
IEC10000058 V2 EN-US
Figure 275: Minimum operate current and operation time for inverse time
characteristics
ResetTypeCrvx: The reset of the delay timer can be made in different ways. By
choosing setting there are the following possibilities:
Curve name
Instantaneous
IEC Reset (constant time)
ANSI Reset (inverse time)
The different reset characteristics are described in the Technical Reference Manual
(TRM). There are some restrictions regarding the choice of reset delay.
For the independent time delay characteristics the possible delay time settings are
instantaneous (1) and IEC (2 = set constant time reset).
For ANSI inverse time delay characteristics all three types of reset time characteristics
are available; instantaneous (1), IEC (2 = set constant time reset) and ANSI (3 =
current dependent reset time).
1MRK 504 163-UUS A Section 9
Current protection
Transformer protection RET670 2.2 ANSI 553
Application manual
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