Atec OMICRON-CMC-256-Plus - 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 ... ±600 VDC threshold or
potential-free
Ranges 100 mV / 1 V / 10 V / 100 V / 600 V
Resolution of threshold ±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. 3 ±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 / 300V, 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
Measuring range
0 ... ±10 V
Accuracy error < 0.003 % rg. 3 typ.,
< 0.02 % rg. guar.
Input impedance 1 MW
Connection 4 mm (0.16 in) banana sockets
DC current measuring input
Measuring range
0 ... ±1 mA, 0 ... ±20 mA
Accuracy error < 0.003 % rg. 3 typ.,
< 0.02 % rg. guar.
Input impedance 15 W
Connection 4 mm (0.16 in) banana socket
Analog AC+DC measuring inputs 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 recording, event recording,
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
IRIG-B synchronization with CMIRIG-B
GPS synchronization with CMGPS error < 1 µs typ., < 5 µs guar.
error < 1 µs typ., < 5 µs guar.
To external voltage Reference signal on binary input 10:
10 ... 300 V / 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 CMC 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 rd. = reading, rg. = range
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