Current Circuit Supervision For Transformers (Ctsrctf) Main Settings; Fuse Failure Supervision (Seqspvc); Runtime Counter For Machines And Devices (Mdsopt) - ABB REX640 Product Manual

REX640
Product version: 1
Table 196. Current circuit supervision for transformers (CTSRCTF) main settings
Parameter
Min operate current
Max operate current
Max Ng Seq current
Table 197. Current transformer supervision for high-impedance protection scheme (HZCCxSPVC)
Characteristic
Operation accuracy
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Table 198. Current transformer supervision for high-impedance protection scheme (HZCCxSPVC) main settings
Parameter
Start value
Alarm delay time
Alarm output mode
Table 199. Fuse failure supervision (SEQSPVC)
Characteristic
1)
Operate time
1) Includes the delay of the signal output contact, f
measurements
Table 200. Runtime counter for machines and devices (MDSOPT)
Description
Motor runtime measurement accuracy
1) Of the reading, for a stand-alone relay, without time synchronization
92
Function
CTSRCTF
CTSRCTF
CTSRCTF
Function
HZCCxSPVC
HZCCxSPVC
HZCCxSPVC
NPS function
Delta function
= 50 Hz, fault voltage with nominal frequency injected from random phase angle, results based on statistical distribution of 1000
n
1)
Value (Range)
0.01...0.50 × I
n
1.00...5.00 × I
n
0.01...1.00 × I
n
Value
Depending on the frequency of the current measured: f
±1.5% of the set value or ±0.002 × I
<40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
Value (Range)
1.0...100.0 %I
n
100...300000 ms
1 = Non-latched
3 = Lockout
Value
U = 1.1 × set Neg Seq voltage
Fault
Lev
Neg Seq voltage
U = 5.0 × set
Fault
Lev
ΔU = 1.1 × set Voltage change rate <30 ms
Voltage change rate <24 ms
ΔU = 2.0 × set
Value
±0.5%
1MRS759144 A
Step
0.01
0.01
0.01
±2 Hz
n
n
Step
0.1
10
-
<33 ms
<18 ms
ABB