Phase Discontinuity Protection Pdnsptoc - ABB RED615 Technical Manual

Section 4
Protection functions
4.4.2
4.4.2.1
4.4.2.2
4.4.2.3
4.4.2.4
452

Phase discontinuity protection PDNSPTOC

Identification
Function description
Phase discontinuity protection
Function block
A070688 V1 EN
Figure 240: Function block
Functionality
The phase discontinuity protection PDNSPTOC is used for detecting unbalance
situations caused by broken conductors.
The function starts and operates when the unbalance current I
limit. To prevent faulty operation at least one phase current needs to be above the
minimum level. PDNSPTOC operates with DT characteristic.
The function contains a blocking functionality. It is possible to block the function
output, timer or the function itself, if desired.
Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "On" and "Off".
The operation of phase discontinuity protection can be described by using a module
diagram. All the modules in the diagram are explained in the next sections.
IEC 61850 IEC 60617
identification identification
PDNSPTOC I2/I1>
1YHT530004D05 D
ANSI/IEEE C37.2
device number
46PD
/I exceeds the set
2 1
615 series
Technical Manual