7
Fig.3. Front panel of the combined frequency and rate of change of frequency relay module
SPCF 1D15
Indicators for measured values,
voltage U and frequency f
Indicator for rated frequency setting
Indicator for undervoltage setting
Indicator for protection stage 1 settings
Indicator for protection stage 2 settings
Indicator for protection stage 3 settings
Indicator for protection stage 4 settings
Indicator for df/dt settings
Indicator for recovery function settings
Indicator for SGF settings
Indicator for SGB checksum
Indicator for SGR checksum
Simplified device
symbol
Self-supervision
alarm indicator
Display
Reset and display
step push-button
Pogramming
push-button
Trip indicator
Type designation
of relay module
Front panel
SPCF 1D15
TRIP
RESET
STEP
0024C
PROGRAM
IRF
f
U
f
<
>
<
>
d
f
d
t
SGR
SGB
SGF
[ ]
n
f
U
/
<
Hz
n
U
[ ]
f
Hz
∆
[ ]
r
t
s
[ ]
d
f dt
/
/
Hz s
[ ]
1
f
Hz
[ ]
4
f
Hz
[ ]
3
f
Hz
[ ]
2
f
Hz
[ ]
1
t
s
, 1
t
,
[ ]
2
t
s
, 2
t
,
[ ]
3
t
s
, 3
t
,
[ ]
4
t
s
, 4
t
,
Содержание SPAF 140 C
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