Settings
Table 86:
NSPTOC Settings
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
On
Operation Off/On
Start Value
4...1000
A
1
12
Start value
Reset Delay Time
0...60000
ms
5
20
Reset delay time
Operate Delay Time
40…200000
ms
1
40
Operate delay time
Table 87:
NSPTOC 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 or ±0.02 A
I
Fault
= 2 × set value = <36 ms
I
Fault
= 10 × set value = <30 ms
Operate time accuracy
±1.0% of the set value or ±20 ms
6.1.6.8
Fuse failure supervision SEQSPVC
Identification
Description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fuse failure supervision
SEQSPVC
FUSEF
60
Functionality
The fuse failure supervision function SEQSPVC is used to block the voltage-
measuring functions when failure occurs in the secondary circuits between the voltage
transformer (or combi sensor or voltage sensor) and the protection relay to avoid
malfunctions of the voltage protection functions.
SEQSPVC has two algorithms, a negative sequence-based algorithm and a delta
current and delta voltage algorithm.
A criterion based on the delta current and the delta voltage measurements can be
activated to detect three-phase fuse failures which usually are more associated with
the voltage transformer switching during station operations.
Operation principle
The
Operation
setting is used to enable or disable the function. The corresponding
parameter values are "On" and "Off".
1MRS757488 H
Section 6
Commissioning
RIO600
139
Installation and Commissioning Manual
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