Novatek THREE-PHASE POWER LIMITER OM-310 OM-310 数据表
产品代码
OM-310
- 6 -
ОМ-310
NOVATEK-ELECTRO
* Note. When working with external transformers of rated current over 100A, the currents (measured and cal-
culated), except for the zero sequence current (ground fault) are transferred via RS-232/RS485 in amperes.
** Note. If power consumed by the load is over 999 kW (kVA, kVAr), then MW (MVA, MVAr) is displayed on
screen with a “
culated), except for the zero sequence current (ground fault) are transferred via RS-232/RS485 in amperes.
** Note. If power consumed by the load is over 999 kW (kVA, kVAr), then MW (MVA, MVAr) is displayed on
screen with a “
п” – shaped point in the middle position. For instance, if the display shows 3п4”, it means 3.4
MW (MVA, MVAr).
*** Note. If automatic reset is forbidden, "not" message is displayed.
**** Note. If the time is not defined, "---" is displayed on screen.
*** Note. If automatic reset is forbidden, "not" message is displayed.
**** Note. If the time is not defined, "---" is displayed on screen.
1.2.3 Programmable parameters and their variability ranges are shown below in table 1.5.
Table 1.5 - Programmable parameters
Settings and read-off
parameters
parameters
Code pa-
rameters
rameters
Minimum
values
values
Max.
values
values
Default
setting
setting
Operation
Address
Transformers
CT in use
0
1
0
0-intergrated CT are in use
1-external CTs are in use
1-external CTs are in use
150
CT rated current, A
20
800
100
For an external CT
151
CT rated current, A
5
700
10
Used for calsculating the current and
the time of overcurrent protection
the time of overcurrent protection
152
Power Control
Rated
power
of load, kW
3
450
5
153
Power limiter tripping
thresholds calculation
parameter
thresholds calculation
parameter
0
2
0
0 – threshold calculation for each
phase (power handling capability for
each phase equals Pnn/3)
1 – threshold calculation for each
phase +20% (total power for al pha-
ses equals Pnn, but not more than
Pnn*1,2/3 for each phase)
2 – aggregate threshold calculation
(total power for all phases equals Pnn)
phase (power handling capability for
each phase equals Pnn/3)
1 – threshold calculation for each
phase +20% (total power for al pha-
ses equals Pnn, but not more than
Pnn*1,2/3 for each phase)
2 – aggregate threshold calculation
(total power for all phases equals Pnn)
154
Main threshold, %
50
150
110
155
Additional threshold*, %
30
100
90
156
Time before load relay
de-energizing, sec
(main threshold)
de-energizing, sec
(main threshold)
0
300
60
Time before load disconnect tripping
when the load wattage main threshold
is exceeded
when the load wattage main threshold
is exceeded
157
Time while load relay is
open, min
(main threshold)
open, min
(main threshold)
1
60
5
Time during which load relay is open
after tripping when the load wattage
main threshold is exceeded
after tripping when the load wattage
main threshold is exceeded
158
Time before characteriz-
ing relay de-energizing*,
sec
(additional threshold)
ing relay de-energizing*,
sec
(additional threshold)
0
300
10
Time after which the characterizing re-
lay will open after tripping when the
load wattage main threshold is ex-
ceeded
lay will open after tripping when the
load wattage main threshold is ex-
ceeded
159
Time while the charac-
terizing relay is open,
min (additional thre-
shold)
terizing relay is open,
min (additional thre-
shold)
1
60
5
Time during which the characterizing
relay is open after tripping which take
place when the load wattage main
threshold is exceeded
relay is open after tripping which take
place when the load wattage main
threshold is exceeded
160
Additional threshold of
the characterizing relay
closure, %
the characterizing relay
closure, %
3
100
30
Threshold for the characterizing relay
closure after overload triggered
opening
closure after overload triggered
opening
161
Characterizing relay
operation mode
operation mode
0
4
0
0 - the relay is used as an alarm relay
1- the relay is used as a time relay
(closes after time specified in
1- the relay is used as a time relay
(closes after time specified in
pa-
rameter after load relay closure )
2-the relay is used for connecting addi-
tional load
3- the relay will close when load wat-
tless power threshold
2-the relay is used for connecting addi-
tional load
3- the relay will close when load wat-
tless power threshold
is exceeded
4- relay will be switched on after ex-
ceeding of main tripping
ceeding of main tripping
162
Characterizing relay
activation mode when
activation mode when
0
2
0
0 – relay will close after expiration of
time
time
1 – relay will close after reduction of
consumed wattage to level
consumed wattage to level
163