Fuse Failure Supervision Seqspvc - ABB Remote I/O RIO600 Installation And Commissioning Manual

1MRS757488 H
Table 86: NSPTOC Settings
Name Values (Range)
Operation Off
On
Start Value 4...1000
Reset Delay Time 0...60000
Operate Delay Time 40...200000
6.1.6.8
RIO600
Installation and Commissioning Manual
Settings
Unit
-
A
ms
ms
Table 87: NSPTOC Technical data
Characteristic
Operation accuracy
Operate time accuracy

Fuse failure supervision SEQSPVC

Identification
Description
Fuse failure supervision
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".
Step Default
- On
1 12
5 20
1 40
Value
Depending on the nominal frequency of the
current measured: f = f
Current:
±1.5% of the set value or ±0.02 A
I = 2 × set value = <36 ms
Fault
I = 10 × set value = <30 ms
Fault
±1.0% of the set value or ±20 ms
IEC 61850 IEC 60617
identification identification
SEQSPVC
Section 6
Commissioning
Description
Operation Off/On
Start value
Reset delay time
Operate delay time
n
ANSI/IEEE C37.2
device number
FUSEF 60
139