ABB REV615 User Manual

Table 29. Non-directional earth-fault protection (EFxPTOC)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: f
n
±2 Hz
EFLPTOC
±1.5% of the set value or ±0.002 × I
n
EFHPTOC
and
EFIPTOC
±1.5% of set value or ±0.002 × I
n
(at currents in the range of 0.1…10 × I
n
)
±5.0% of the set value
(at currents in the range of 10…40 × I
n
)
Start time
1)2)
Minimum Typical Maximum
EFIPTOC:
I
Fault
= 2 × set Start value
I
Fault
= 10 × set Start value
16 ms
11 ms
19 ms
12 ms
23 ms
14 ms
EFHPTOC and EFLPTOC:
I
Fault
= 2 × set Start value 23 ms 26 ms 29 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Retardation time <30 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3)
Suppression of harmonics RMS: No suppression
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
1) Measurement mode = default (depends on stage), current before fault = 0.0 × I
n
, f
n
= 50 Hz, earth-fault current with nominal frequency injected from random phase angle, results based on
statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I
n
, Start value multiples in range of 1.5...20
Table 30. Non-directional earth-fault protection (EFxPTOC) main settings
Parameter
Function Value (Range) Step
Start value EFLPTOC 0.010...5.000 × I
n
0.005
EFHPTOC 0.10...40.00 × I
n
0.01
EFIPTOC 1.00...40.00 × I
n
0.01
Time multiplier EFLPTOC and EFHPTOC 0.05...15.00 0.01
Operate delay time EFLPTOC and EFHPTOC 40...200000 ms 10
EFIPTOC 20...200000 ms 10
Operating curve type
1)
EFLPTOC Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
EFHPTOC Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
EFIPTOC Definite time
1) For further reference, see the Operation characteristics table
Capacitor Bank Protection and Control
1MRS757952 D
REV615
Product version: 5.0 FP1
28 ABB

ABB REV615 Specifications

General

Brand	ABB
Model	REV615
Category	Power distribution unit
Language	English