51
—
Table 64. Three-phase thermal protection for feeders, cables and distribution transformers (T1PTTR) main settings
Parameter
Function
Value (range)
Step
Env temperature Set
T1PTTR
-50...100°C
1
Current reference
T1PTTR
0.05...4.00 × I
n
0.01
Temperature rise
T1PTTR
0.0...200.0°C
0.1
Time constant
T1PTTR
60...60000 s
1
Maximum temperature
T1PTTR
20.0...200.0°C
0.1
Alarm value
T1PTTR
20.0...150.0°C
0.1
Reclose temperature
T1PTTR
20.0...150.0°C
0.1
Current multiplier
T1PTTR
1...5
1
Initial temperature
T1PTTR
-50.0...100.0°C
0.1
—
Table 65. High-impedance differential protection (HIxPDIF)
Characteristic
Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time
1) 2)
Minimum
Typical
Maximum
I
Fault
= 2.0 x set Start value
I
Fault
= 10.0 x set Start value
12 ms
10 ms
16 ms
12 ms
24 ms
14 ms
Reset time
< 40 ms
Reset ratio
Typically 0.96
Retardation time
< 35 ms
Operate time accuracy in definite time mode
±1.0% of the set value or ±20 ms
1) Measurement mode = default (depends on stage), current before fault = 0.0 × I
n
, f
n
= 50 Hz, 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
—
Table 63. Three-phase thermal protection for feeders, cables and distribution transformers (T1PTTR)
Characteristic
Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±2 Hz
Current measurement: ±1.5% of the set value or ±0.002 × I
n
(at currents
in the range of 0.01...4.00 × I
n
)
Operate time accuracy
1)
±2.0% of the theoretical value or ±0.50 s
1) Overload current > 1.2 × Operate level temperature
—
Table 62. Frequency protection (FRPFRQ) main settings
Parameter
Function
Value (range)
Step
Operation mode
FRPFRQ
1 = Freq<
2 = Freq>
3 = df/dt
4 = Freq< + df/dt
5 = Freq> + df/dt
6 = Freq< OR df/dt
7 = Freq> OR df/dt
-
Start value Freq>
FRPFRQ
0.9000...1.2000 × f
n
0.0001
Start value Freq<
FRPFRQ
0.8000...1.1000 × f
n
0.0001
Start value df/dt
FRPFRQ
-0.2000...0.2000 × f
n
/s
0.005
Operate Tm Freq
FRPFRQ
80...200000 ms
10
Operate Tm df/dt
FRPFRQ
120...200000 ms
10