- 16 -
ОМ-310
NOVATEK-ELECTRO
4
L2_OUT2
31.5
51
T3
26
N
T1b
K1-1-nc
T1e
8
6
L1
1
Designation
K1-2-nc
GND_RS232
L1_OUT2
23
TxD_rs232
L3
T3b
K1-1-com
33
АВ
Cont
OM-310
K1-1-no
16
T1
K2-com
30
27
L2
18
T3e
3
25
Cont
cont
15
K1-1
S1
A RS-485
T2
Designation
GND
MS1
T2e
N
K1-2-no
34
Tdif_e
7
K2-no
9
28.5
X1-2
4
X2
K1-2
K2-nc
5
MS2
X1-1
K2
L1_OUT1
T4
Designation
L1
B RS-485
24
17
Cont
L3_OUT2
2
K1-2-com
T2b
Tdif_b
L3_OUT1
14
2
L2
RxD_rs232
19
L2_OUT1
35
52
3
GND
L3
S1 – remote switch
А
S – automatic switch
M
С
1 –additional load magnetic contactor
M
С
2 – main load magnetic contactor
K1 relay – load relay
K2 relay – characterizing relay
Т
1-
Т
3 –external CTs
Т
4 – differential current transformer.
Figure 2.1 -
ОМ
-310 connection schematic with use of external CTs and at
=2
(characterizing relay operation in the mode of controlling additional load)
2.4 INTENDED USE
Note:
In the
ОМ
-310 operation description, it is assumed that the protections described are enabled and all
necessary sensors are connected.
2.4.1 ОМ
-310 operation before load relay closure
2.4.1.1.
ОМ
-310 operation after power-on (first start)
After power-on, the mnemonic indicator displays
for 1-2 seconds, and then before load energizing
ОМ
-310
tests:
- mains voltage quality: whether voltage is present on all three phases, if the mains voltage is symmetrical,
what the RMS line voltage value is;
- correct phase sequence, absence of phase fritting.
When any of inhibiting factors is present, the load relay is not closed, and on the mnemonics indicator FAULT
LED glows.
Depending on the SiP parameter, the indicator displays:
- line voltage Uab at
=0;
- active power (PoA) at
=1;
- AR time countdown in seconds, (Att) while
=2.
