ABB 1MRK002826-AG - Page 115

GUID-83B0F607-D898-403A-94FD-7FE8D45C73FF v9
Table 137. Insulation supervision for liquid medium function SSIML
Function Range or value Accuracy
Oil alarm level 1.00-100.00 ±10.0% of set value or 0.2 whichever is greater
Oil lockout level 1.00-100.00 ±10.0% of set value or 0.2 whichever is greater
Temperature alarm level -40.00-200.00 ±2.5% of set value or 1 whichever is greater
Temperature lockout level -40.00-200.00 ±2.5% of set value or 1 whichever is greater
Time delay for oil alarm (0.000-60.000) s ±0.2% or ±250ms whichever is greater
Reset time delay for oil alarm (0.000-60.000) s ±0.2% or ±250ms whichever is greater
Time delay for oil lockout (0.000-60.000) s ±0.2% or ±250ms whichever is greater
Time delay for temperature alarm (0.000-60.000) s ±0.2% or ±250ms whichever is greater
Reset time delay for temperature alarm (0.000-60.000) s ±0.2% or ±250ms whichever is greater
Time delay for temperature lockout (0.000-60.000) s ±0.2% or ±250ms whichever is greater
GUID-B6799420-D726-460E-B02F-C7D4F1937432 v9
Table 138. Circuit breaker condition monitoring SSCBR
Function Range or value Accuracy
Alarm level for open and close travel time (0 – 200) ms ±3 ms
Alarm level for number of operations (0 – 9999) -
Independent time delay for spring
charging time alarm
(0.00 – 60.00) s ±0.2% or ±30 ms whichever is greater
Independent time delay for gas pressure
alarm
(0.00 – 60.00) s ±0.2% or ±30 ms whichever is greater
Independent time delay for gas pressure
lockout
(0.00 – 60.00) s ±0.2% or ±30 ms whichever is greater
CB Contact Travel Time, opening and
closing
±3 ms
Remaining Life of CB ±2 operations
Accumulated Energy ±1.0% or ±0.5 whichever is greater
GUID-F6B6ED6B-2488-483C-B068-3F4631F34DC8 v1
Table 139. Transformer loss of life LOLSPTR
Function Range or value Accuracy
Service value, hot spot temperature – ±2.0% of expected value
Service value, top oil temperature – ±2.0% of expected value
Service value, loss of life – ±2.0% of expected value
Operate level , Warning level 1 and 2 (50 - 700)°C/°F of hot spot
temperature
±2.0% of hot spot temperature
Operate time, Warning level 1 and 2 (50 - 700)°C/°F of hot spot
temperature
±200 ms typically
Operate time, definite time function
(ALARMx)
(0.0 - 6000.0) s ±250 ms typically
Generator protection REG670
1MRK 502 074-BEN M
Version 2.2
Hitachi Power Grids 115
© Copyright 2017 Hitachi Power Grids. All rights reserved