PFSK164 3BSE021180R1 ABB DSP signal processing module

Product Details

Product Description

Product Description
PFSK164 3BSE021180R1 ABB DSP signal processing module
PFSK164 3BSE021180R1 ABB DSP signal processing module
Our Email: 2235954483@qq.com
contact number:13313705507
contacts：HE
These releases are connected with current transformers (three or four
according to the number of conductors to be protected), which are positioned
inside the circuit-breaker and have the double functions of supplying the
power necessary to the proper functioning of the release (self-supply) and of
detecting the value of the current flowing inside the live conductors; therefore
they are compatible with alternating current networks only.
The signal coming from the transformers and from the Rogowsky coils is
processed by the electronic component (microprocessor) which compares
it with the set thresholds. When the signal exceeds the thresholds, the trip of
the circuit-breaker is operated through an opening solenoid which directly
acts on the circuit-breaker operating mechanism.
In case of auxiliary power supply in addition to self-supply from the current
transformers, the voltage shall be 24 Vdc ± 20%.
The protection functions available for the electronic releases are:
L - Overload protection with inverse long time delay
Function of protection against overloads with inverse long time delay and
constant specific let-through energy; it cannot be excluded.
L - Overload protection in compliance with Std. IEC 60255-3
Function of protection against overloads with inverse long time delay and trip
curves complying with IEC 60255-3; applicable in the coordination with fuses
and with medium voltage protections.
S - Short-circuit protection with adjustable delay
Function of protection against short-circuit currents with adjustable delay; thanks
to the adjustable delay, this protection is particularly useful when it is necessary
to obtain selective coordination between different devices.
D - Directional short-circuit protection with adjustable delay
The directional protection, which is similar to function S, can intervene in a
different way according to the direction of the short-circuit current; particularly
suitable in meshed networks or with multiple supply lines in parallel.
I - Short-circuit protection with instantaneous trip
Function for the instantaneous protection against short-circuit.
G - Earth fault protection with adjustable delay
Function protecting the plant against earth faults.
U - Phase unbalance protection
Protection function which intervenes when an excessive unbalance between
the currents of the single phases protected by the circuit-breaker is detected.
OT - Self-protection against overtemperature
Protection function controlling the opening of the circuit-breaker when the temperature inside the release can jeopardize its functioning.
UV - Undervoltage protection
Protection function which intervenes when the phase voltage drops below the
preset threshold.

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