Name Values (Range) Unit Step Default Description
Min Operate Voltage - V - 500 Minimum operating
voltage to allow
directional criteria
Voltage Mem Time
- ms - 100 Voltage memory
time
Abs Hyst Oper Qty 0.0…100.0 A 0.1 3 Absolute hysteresis
for operating
quantity
Abs Hyst Pol Qty
0…2500 V 0.1 200 Absolute hysteresis
for polarizing
quantity
Table 68: DPHPTOC Technical data
Characteristic Value
Operation accuracy Depending on the nominal frequency of the
current measured: f = f
n
Current: ±1.5% of the set value
Voltage: ±1.5% of the set value
Phase angle: ±2⁰
Operate time accuracy (DMT)
±1.0% of the set value or ±20 ms
6.1.6.5 Earth-fault fault detection
Non-directional earth-fault fault detection EFPTOC
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Non-directional earth-fault fault
detection
EFPTOC I0> 51N
Functionality
The earth-fault overcurrent fault detection function EFPTOC is used as a non-
directional phase-to-earth fault detection. The function starts when the residual
current exceeds the set limit. Function operates with definite time characteristic, that
is, the function operates after a predefined operate time and resets when the fault
current disappears.
Operation principle
The Operation setting is used to enable or disable the function. The corresponding
parameter values are "On" and "Off".
The operation of EFPTOC can be described by using a module diagram. All modules
in the diagram are explained in the next sections.
Section 6 1MRS757488 H
Commissioning
100 RIO600
Installation and Commissioning Manual
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