Atec OMICRON-CMC-356 User Manual
Page 2
Low level outputs
1
Number of outputs
6 (12 with Option LLO-2)
Setting range
0 ... ±10 Vpk
Max. output current
1 mA
Accuracy
error < 0.025 % typ.,
< 0.07 % guar.at 1 ... 10 Vpk
Resolution
250 µV
Distortion (THD+N)
2
< 0.015 % typ., < 0.05 % guar.
Unconventional CT/VT simulation
linear, Rogowski (transient and sinewave)
Overload indication
yes
Isolation
SELV
Usability
completely independent from internal
amplifier outputs
Connection
16 pin combination socket (rear side)
Auxiliary DC supply
Voltage ranges
0 ... 264 VDC, 0.2 A / 0 ... 132 VDC,
0.4 A / 0 ... 66 VDC, 0.8 A
Power
max. 50 W
Accuracy
error < 2 % typ., < 5 % guar
Connection
4 mm (0.16 in) banana sockets
Binary inputs
Number
10
Trigger criteria
Toggling of potential-free contacts or DC
voltage compared to threshold voltage
Input characteristics
0 ... ±300 VDC threshold or potential-free
If equipped with ELT-1
3
: 0 ... ±600 VDC
threshold or potential-free
Ranges
20 V / 300 V
If equipped with ELT-1
3
: 100 mV / 1 V /
10 V / 100 V / 600 V
Resolution of threshold
50 mV (0 ... 20 V), 500 mV (20 V ... 300 V)
ELT-1
3
: ±2 mV, ±20 mV, ±200 mV, ±2 V,
±20 V in ranges
Sample rate
10 kHz (resolution 100 µs)
Time stamping accuracy
±0.00015 % of rd.
5
±70 µs
Max. measuring time
infinite
Debounce / Deglitch time
0 ... 25 ms / 0 ... 25 ms
Counting function
< 3 kHz at pulse width > 150 µs
Galvanic isolation
5 galvanically isolated groups
(2+2+2+2+2)
Max. input voltage
CAT IV / 150 V, CAT III / 300 V, transient
immunity 2 kV
If equipped with ELT-1
3
: CAT IV / 150 V, CAT
III / 300 V, CAT II / 600 V (850 Vpk)
Connection
4 mm (0.16 in) banana sockets
Counter inputs 100 kHz
Number
2
Max. counting frequency
100 kHz
Pulse width
> 3 µs
Threshold voltage
6 V
Voltage hysteresis
2 V
Max. input voltage
±30 V
Isolation
SELV
Connection
16 pin combination socket (rear side)
Trigger on overload
Supported generators
Current generators
Timer accuracy
error < 1 ms
Binary outputs, relays
Type
potential-free relay contacts, software
controlled
Number
4
Break capacity AC
Vmax: 300 VAC / Imax: 8 A /
Pmax: 2000 VA
Break capacity DC
Vmax: 300 VDC / Imax: 8 A / Pmax: 50 W
Connection
4 mm (0.16 in) banana sockets
Binary outputs, transistor
Type
open collector transistor outputs
Number
4
Update rate
10 kHz
Imax
5 mA
Connection
16 pin combination socket (rear side)
DC voltage measuring input (If option ELT-1 is equipped
3
)
Measuring range
0 ... ±10 V
Accuracy
error < 0.003 % rg.
5
typ.,
< 0.02 % rg. guar.
Input impedance
1 MW
Connection
4 mm (0.16 in) banana sockets
DC current measuring input (If option ELT-1 is equipped
3
)
Measuring range
0 ... ±1 mA, 0 ... ±20 mA
Accuracy
error < 0.003 % rg.
5
typ.,
< 0.02 % rg. guar.
Input impedance
15 W
Connection
4 mm (0.16 in) banana socket
Analog AC+DC measuring inputs (If option ELT-1 is equipped
3,4
)
Type
AC + DC analog voltage inputs (current
measurement with external current
clamps or shunt resistors)
Number
10
Nominal input ranges (RMS values)
100 mV, 1 V, 10 V, 100 V, 600 V
Amplitude accuracy
error < 0.06 % typ., < 0.15 % guar.
Bandwidth
DC ... 10 kHz
Sampling frequency
28.44 kHz, 9.48 kHz, 3.16 kHz
Input impedance
500 kW // 50 pF
Transient input buffer at 28 kHz
3.5 s for 10 input channels / 35 s for 1
input channel
Transient input buffer at 3 kHz
31 s for 10 input channels / 5 min. for 1
input channel
Transient trigger
threshold voltage, power quality trigger:
sag, swell, harmonic, frequency, frequency
change, notch
Measurement functions
I (AC + DC), V (AC + DC), phase,
frequency, power, harmonics, transient -,
event- and trend recording
Input overload indication
yes
Input protection
yes
Max. input voltage
CAT IV / 150 V, CAT III / 300V, CAT II /
600 V (850 Vpk)
Galvanic isolation
5 groups (2+2+2+2+2)
Connection
4 mm (0.16 in) banana sockets (combined
with binary inputs)
Time Synchronization
Timing accuracy (voltage/current)
IRIG-B synchronization with CMIRIG-B
GPS synchronization with CMGPS
error < 1 / 5 µs typ., < 5 / 20 µs guar.
error < 1 / 5 µs typ., < 5 / 20 µs guar.
To external voltage
Reference signal on binary input 10:
40 ... 70 Hz
With the unique PermaSync functionality (supported by TU 2.30 or higher), analog
and Sampled Values outputs stay permanently in sync with the internal CMC time
reference. In combination with the optional CMIRIG-B interface box, PermaSync
additionally allows the continuous synchronization of the output quantities with
an external IRIG-B time protocol or an external PPS signal. With CMIRIG-B it is also
possible to transmit the internal PPS signal of the to the device under test (e.g. PMUs
or IEDs stimulated with a synchronized Sampled Values data stream).
1
For directly testing relays with low level inputs by simulating signals from non
conventional CTs and VTs with low level interfaces and for controlling external
amplifier units
2
THD+N: Values at 50/60 Hz, 20 kHz measurement bandwidth, nominal value, and
nominal load
3
The ELT-1 hardware option turns the ten binary inputs into multifunctional analog
AC and DC voltage measuring inputs and adds two DC measuring inputs
(0 … 10 V / 0 … 20 mA) for transducer testing
4
Up to three inputs can be used for measuring RMS values, frequency, and phase
angle without the EnerLyzer software license. Full functionality requires EnerLyzer
software license
5
rd. = reading, rg. = range