TAVRIDA ELECTRIC Rec15, Technical Manual

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Table 24
– OC/EF custom TCC settings
11
Settings Designation Range Step size Default
Number of sections n.a. 1/2/3 n.a. 3
Maximum time, s Tmax 0.05
–100.00
0.01 10.00
First intermediate time, s T1 0.05
–100.00
0.01 3.00
Second intermediate time, s T2 0.05
–100.00
0.01 0.25
Minimum time, s Tmin 0.05
–100.00
0.01 0.05
Pickup current, A Ip 3
10
–6000
1 100
First intermediate current, A I1 3
10
–6000
1 500
Second intermediate current, A I2 3
10
–6000
1 1000
Maximum current, A Imax 3
10
–6000
1 3000
First section asymptote, A Ias1 1
–6000
1 10
Second section asymptote, A Ias2 1
–6000
1 10
Third section asymptote, A Ias3 1
–6000
1 10
Hot Line blocking mode HLBM Enable/Disable n.a. Enable
Phase and Earth Overcurrent Reclosing (AR OC)
This element is available for OCR mode
“Recloser” only.
The AR OC element provides reclosing initiated by tripping of one of OC1, OC2, OC3, EF1, EF2 or EF3
elements. The user set delay between trip and reclose is called „reclose time“ (Tr) and can be set
independently for each trip in the seque
nce. If the fault is not cleared during „reclose time“, the recloser will
trip again. This will repeat a number of times until the fault is cleared or the AR OC element reaches the end
of the user defined reclose sequence. At this point the recloser remains open and will no longer reclose
automatically.
This is known as „lockout“ and the recloser can only be closed by local or remote operator
command, which clears the lockout condition.
AR OC settings are described in Table 25 and Table 26.
Table 25
– Radial line recloser AR OC element settings
Settings Designation Range Default
Operating mode Mode Normal/Rezip/ZSC ZSC
Number of trips to lockout Nt
Mode = Normal/ZSC 1/2/3/4 4
Mode = Rezip 2/3/4 2
Highset trips to lockout Nhs 1/2/3/4 1
Reclosing sequence Seq
Mode = Normal/ZSC
For 4 trips to lockout:
IIII/IIID/IIDD/IDDD/DDDD/DDDI/DDII/
DIII/ IIDI/IDII/IDDI
For 3 trips to lockout:
III/IID/IDD/DDD/DDI/DII/IDI
For 2 trips to lockout:
II/ID/DD/DI
For 1 trip to lockout:
I/D
IIDD
Mode = Rezip n.a.
For 4 trips to lockout: DIII
For 3 trips to lockout: DII
For 2 trips to lockout: DI
First closure mode SST mode
Mode = Normal/ZSC
Accelerate, Decelerate, Normal,
Unconditional AR
Normal
Mode = Rezip n.a. Accelerate
First closure time SST time
Mode = Normal/ZSC 1-180 1
Mode = Rezip n.a. 0.1
First reclose time, s Tr1
Mode = Normal/ZSC 0.10
–1800.00
1.00
Mode = Rezip 0.20
–1800.00
0.20
Second reclose time, s Tr2 1.00
–1800.00
10.00
Third reclose time, s Tr3 1.00
–1800.00
30.00
Reset time, s Tres
Mode = Normal/ZSC 1-180 1
Mode = Rezip n.a. 0.10
Table 26
– Ring line recloser AR OC element settings
Settings Designation Range Default
Operating mode Mode Normal/Rezip/ZSC ZSC
11
Custom TCC could be configured via user software TELARM only.