- 5 -
NOVATEK-ELECTRO
ОМ-310
- PC, connected to one of OM-310 interfaces (MODBUS, RS-232).
Table 1.4
- Measured and Displayed Parameters
Measurement functions
Range
Accuracy
Mnemonics
Address Measurement
units used at
data transfer
Currents
1/10 of an
ampere*
Phase currents RMS values, A
0,5-999
2%
100,101,
102
Zero sequence current RMS value, A
0,3-9,9
2%
103
Each phase average current value at
time specified in tSi parameter
104,105,
106
Мах
each phase average current value
obtained (was obtained) since last power
on.
All average values can be reset with
RES/MEM/SEL button at time of max
average current value output for any
phase (real-time average current value
for corresponding phase is assigned).
<3 I
tt
> 3 I
tt
2%
10%
107,108,
109
Negative sequence current (current im-
balance), A.
0,2-200
5%
110
Voltages
Volts
Phase voltages RMS values (defined by
connecting zero wire to OM-310), V
100-300
3 V
111,112
113
Power voltage RMS values, V
100-450
5
В
114,115
116
Positive-sequence voltage, V
100-300
3 B
117
Negative-sequence voltage, V
3 -300
3 B
118
Zero-sequence voltage (vector sum of
three phase voltages, divided by three),
(measurement is possible only when ze-
ro wire is connected to OM-310),V
3-100
3 B
119
Wattages and Cosines
Gross power, KVA**
0-5000
5%
120, 121
W * 10
Active power, KW**
0-5000
5%
122, 123
Wattles power, KVAr**
0-5000
5%
124, 125
Phase A active power, KW**
0-5000
5%
126, 127
Phase B active power, KW**
0-5000
5%
128, 129
Phase C active power, KW**
0-5000
5%
130, 131
Phase
А
voltage/current angle cosine
0,00-1,00
5%
132
Cosine value
*1000
Phase B voltage/current angle cosine
0,00-1,00
5%
133
Phase C voltage/current angle cosine
0,00-1,00
5%
134
Time before load disconnect tripping when
the load wattage is exceeded, sec ****
0-600
1s
135
seconds
Time before AR delay termination, sec*** 0-900
1s
136
Wait time after de-energizing in case of
over wattage (indicates wait time before
permit of system restart ), min ****
0-30
1s
137
Mains frequency, Hz
45-65
1%
138
1/10 Hz
