IS200TREAH2AED industrial automation control module DCS

IS200TREAH2AED industrial automation control module DCS

Technical data of product parameters

where high-speed protection is IS200TREAH2AED required. The high speed is
achieved by measuring the instantaneous value of the voltage and, since DC components and harmonics are not suppressed, by eliminating the inertia of the digital input filter.
Compared with the normal voltage function (Section 3.5.10.), the
instantaneous function has a larger tolerance on the pick-up
setting. It should therefore only be used in the above two cases.
The measuring principle is the same as that of the peak value
current function (Section 3.5.6.) and therefore reference should
be made to that Section for a description of the principle and the
significance of the minimum frequency setting f-minThe balanced voltage function is intended mainly for preventing IS200TREAH2AED
incorrect voltage measurement by other devices.
It compares the voltages (amplitudes) of two generally identical
voltage sources connected to the same busbar phase by phase.
The function picks up when the difference between voltages of
the same phase exceeds a set pick-up value (V-Unbalance).
A tripping signal is emitted for the source with the lower voltage
(Trip-Line1 or Trip-Line2) and a general tripping signal (Trip)
generated after a set time delay (Delay) and providing the
tripping condition remains fulfilled throughout the delay time.
These signals are available for blocking protection and instrumentation connected to the faulty source and thus prevent false
tripping or measurements. IS200TREAH2AED
The tripping signals are maintained for the setting of the reset
time (t-Reset) after the tripping condition is no longer fulfilled.
The function is thus suitable for detecting v.t. circuit faults (fuse
failure) and faults on the protection and metering circuits connected to them.Only voltages of similar sources, which have coincident amplitudes and phase-angles and are connected to the same
busbar, should be compared.
Wherever possible the voltages should also be processed by
neighbouring sampling groups and by the same input unit.
The purpose of this is to limit signal conditioning er

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This article from the temporal Ming sheng automation equipment co., LTD.,

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