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Digital Energy
Static Transfer Switch
NOTE
DIP switches numbering order is from left to right side as in figure 11 !
Designation
on the
Function
enclosure
Overcurrent
SW6
level
Retransferring
delay
SW7
Switching delay
with
unsynchronized
sources
Sequence of
SW8
the thyristors
firing
X – either OFF or ON freely (it is not important for this function)
OPM_STS_400_25A_100_1GB_V011
Designation
1
2
3
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
X
OFF
ON
X
ON
OFF
X
ON
ON
X
X
X
OFF
X
X
OFF
X
X
ON
X
X
ON
OFF
X
X
ON
X
X
34
Value
4
-
Transfer without
X
overcurrent
3I
X
n
If instantaneous
4.5I
X
n
current is larger
6I
than set level,
X
n
transfer is not
7.5I
X
n
X
9I
n
X
25 s
X
1 s
X
8 s
X
0.8 s
50 ms
OFF
Delay between
17 ms
ON
switching off and
OFF
25 ms
switching on
13 ms
ON
Only possible setting for
STS-400-XX-4. Other setting
X
may cause wrong operation of
the device.
Only possible setting for
STS-400-XX-3. Other setting
X
may cause wrong operation of
the device.
GE DE STS: installation and operating manual 1.1 (GB)
g
control
performed.
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