Protection And Reset Curves - DEMA CPM 310 G User Manual

Protection and Reset Curves

DEMA CPM 310 G Overcurrent Protection Relays can employ and run IEC and IEEE / ANSI protection and reset
curves, as well as a wide range of special curves that are mostly used when CPM 310 G units are used in the
same selectivity scheme with older models of protection relays such as electromechanical relays. The wide
setting ranges make CPM 310 G compatible with most of the protection and selectivity schemes currently in
use worldwide.
CPM 310 G protection and reset curves, and formulas, parameters and setting ranges belonging to these are
given in the below table. The Thermal Overload Protection Function is studied in detail in its dedicated section -
for this, parameters and other information for thermal overcurrent protection is not given in the table. □
Eğri Tipi
Açıklama Kısaltma
Short Time Inverse
IEC STI
Kısa Zamanlı Ters
Standard Inverse
IEC SI
Normal Ters
Very Inverse
IEC VI
Çok Ters
Extremely Inverse
IEC EI
Aşırı Ters
Long Time Inverse
IEC LTI
Uzun Zamanlı Ters
Semiconductor Protection
SA Semic
Yarıiletken Koruma
Definite Inverse (DI)
SB DI
Özel Sabite Yakın Ters (DI)
Short Time Inverse (CO2)
SC CO2
Özel Kısa Zamanlı Ters (CO2)
Long Time Inverse (SD CO8)
SD CO8
Özel Uzun Zamanlı Ters (SD CO8)
Standard Inverse (CO-C3H)
SE CO-C3H
Özel Normal Ters (CO-C3H)
Moderately Inverse
IEEE MI
Ilımlı Ters
Very Inverse
IEEE VI
Çok Ters
Extremely Inverse
IEEE EI
Aşırı Ters
Definite Minimum Time
DMT
Sabit Zaman
Thermal Overload
Termik Aşırı Yük
Table of CPM 310 G Protection and Reset Curves Parameters
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Universal Formula for Protection Curves
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Universal Formula for Reset Curves
Koruma Eğrisi Parametreleri
α (Açma
Ayar Aralığı
A B
Faktörü)
0.05 s 0.04 0 TMS 0.025-3.2
0.14 s 0.02 0 TMS 0.025-3.2
13.5 s 1 0 TMS 0.025-3.2
80 s 2 0 TMS 0.025-3.2
120 s 1 0 TMS 0.025-3.2
35500 s 6 0 TMS 0.025-3.2
2.96875 s 2.3 1.96875 s TMS 0.025-3.2
0.0092 s 0.02 0.008 s TMS 0.025-3.2
21 s 2 0.72 s TMS 0.025-3.2
1.81 s 1.05 0.68 s TMS 0.025-3.2
0.0515 s 0.02 0.114 s TMS 0.025-3.2
19.61 s 2 0.491 s TMS 0.025-3.2
28.2 s 2 0.1217 s TMS 0.025-3.2
- - - DMT 0.01-150s
IEC Koruma Eğrileri
- 22 -
Reset Eğrisi Parametreleri
α (Reset
Ayar Aralığı
T C
res
Faktörü)
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
- - - DMT (0.04-100) s
6.9 2 0 RTMS 0.025-3.2
- - - DMT (0.04-100) s
39.6 2 0 RTMS 0.025-3.2
- - - DMT (0.04-100) s
2.2 2 0 RTMS 0.025-3.2
- - - DMT (0.04-100) s
4.85 2 0 RTMS 0.025-3.2
- - - DMT (0.04-100) s
21.6 2 0 RTMS 0.025-3.2
- - - DMT (0.04-100) s
29.1 2 0 RTMS 0.025-3.2
- - - DMT (0.04-100) s
bölümünde incelenmiştir.
Uygulanan
Standart
Reset Tipi
DMT IEC
DMT IEC
DMT IEC
DMT IEC
DMT IEC
DMT Özel Eğri SA
DMT Özel Eğri SB
DMT
Özel Eğri SC
IDMT
DMT
Özel Eğri SD
IDMT
DMT
Özel Eğri SE
IDMT
DMT
IEEE / ANSI
IDMT
DMT
IEEE / ANSI
IDMT
DMT
IEEE / ANSI
IDMT
DMT -
IEC