Gas Medium Supervision Ssimg - ABB REG670 Applications Manual

1MRK 502 071-UEN -
17.2
17.2.1
17.2.2
17.2.3
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
Table 69: General settings parameters for the Measurement function
Setting Short description
Operation Operation Off/On
PowAmpFact Amplitude factor to scale power
calculations
PowAngComp Angle compensation for phase
shift between measured I & U
Mode Selection of measured current
and voltage
k Low pass filter coefficient for
power measurement, U and I
UGenZeroDb Zero point clamping in % of
Ubase
IGenZeroDb Zero point clamping in % of Ibase
UBase (set in Base setting for voltage level in
Global base) kV
IBase (set in Base setting for current level in A
Global base)

Gas medium supervision SSIMG

Identification
Function description
Insulation gas monitoring function
Application
Gas medium supervision (SSIMG) is used for monitoring the circuit breaker
condition. Proper arc extinction by the compressed gas in the circuit breaker is very
important. When the pressure becomes too low compared to the required value, the
circuit breaker operation shall be blocked to minimize the risk of internal failure.
Binary information based on the gas pressure in the circuit breaker is used as an input
signal to the function. The function generates alarms based on the received
information.
Setting guidelines
The parameters for Gas medium supervision SSIMG can be set via local HMI or
Protection and Control Manager PCM600.
Selected Comment
value
On Function must be
1.000 Typically no scaling is required
0.0 Typically no angle compensation
is required. As well here required
direction of P & Q measurement is
towards protected object (as per
IED internal default direction)
Arone Generator VTs are connected
between phases (V-connected)
0.00 Typically no additional filtering is
required
25% Set minimum voltage level to 25%
3 Set minimum current level to 3%
15,65 Set generator rated phase-to-
phase voltage
3690 Set generator rated current
IEC 61850 IEC 60617
identification identification
SSIMG -
Section 17
Monitoring
On
ANSI/IEEE C37.2
device number
63
635