Atec OMICRON-CMC-156 User Manual

Cmc 156 ep

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CMC 156 EP: 3 Phase Voltage + 3 Phase Current Test Set

Voltage generators/-amplifiers
Setting range 3-phase AC (L-N)

3 x 0 ... 127.5 V

1-phase AC (L-L)

1 x 0 ... 255 V

DC (L-N)

3 x 0 ... ±127.5 V

Power

3-phase AC (L-N)

3 x 50 VA at 127.5 V

1-phase AC (L-N)

1 x 100 VA at 127.5 V

1-phase AC (L-L)

1 x 140 VA at 255 V

DC (L-N)

1 x 90 W at ±127.5 V

75

140

127.5

255

Output voltage / V

0

1-phase AC (L-L)

3-phase AC (L-N)

1-phase AC (L-N)

Output po

w

er / V

A

Accuracy

2

error < 0.015 % rd.

3

+ 0.005 % rg.

3

typ.

at 0 ... 127.5 V
error < 0.04 % rd. + 0.01 % rg. guar.
at 0 ... 127.5 V

Distortion (THD+N)

4

< 0.015 % typ., < 0.05 % guar.

Resolution

6 mV

Connection

4 mm (0.16 in) banana sockets/comb. socket

Current generators/-amplifiers
Setting range 3-phase AC (L-N)

3 x 0 ... 12.5 A

1-phase AC (3L-N)

1 x 0 ... 27 A

DC (3L-N)

1 x 0 ... ±30 A

Power

3-phase AC (L-N)

3 x 40 VA at 12.5 A

1-phase AC (3L-N)

1 x 75 VA at 27 A

1-phase AC (L-L)

1 x 75 VA at 12.5 A

DC (3L-N)

1 x 60 W at ±12.5 A

75

140

127.5

255

Output voltage / V

0

1-phase AC (L-L)

3-phase AC (L-N)

1-phase AC (L-N)

Output po

w

er / V

A

Accuracy

5

error < 0.015 % rd. + 0.005 % rg. typ.
at 0 ... 12.5 A
error < 0.04 % rd. + 0.01 % rg. guar.
at 0 ... 12.5 A

Distortion (THD+N)

4

< 0.025 % typ., < 0.05 % guar.

Ranges

1.25 A / 12.5 A

Resolution (for respective range)

50 µA / 500 µA

Resolution

500 µA

Max. compliance voltage (L-N)/(L-L)

4 VRMS, 6 Vpk / 8 VRMS, 12 Vpk

Connection

4 mm (0.16 in) banana sockets/comb. socket

At only 9.8 kg / 22 lbs, the CMC 156 EP is the smallest and lightest solution for three-phase
testing of numerical relays. Its high precision makes it also the perfect device (class 0.05 %
Working Standard) for testing and calibrating meters, transducers and other measurement
equipment.

Generators, general
Frequency

range sine signals

10 ... 1000 Hz

range transient signals DC ... 3.1 kHz
accuracy/-drift

±0.5 ppm / ±1 ppm

resolution

5 µHz

Phase

angle range

- 360° ... +360°

resolution

0.001°

error at 50/60 Hz

< 0.005° typ., < 0.02° guar.

Bandwidth (-3dB)

3.1 kHz

Simulated
power S, P
(calibration of
energy meters)

accuracy

6

error < 0.05 % rd.

3

typ., < 0.1 % rd. guar.

at 10-63 Hz, 50 ... 127.5 V, and 0.1 ... 12.5 A

temperature drift

0.001 % / °C typ.. < 0.05 % / °C guar.

Low level outputs
Setting range

6 x 0 ... 5 VRMS

Max. output current

2 mA

Accuracy

error < 0.025 % typ., < 0.1 % guar.

Resolution

250 µV

Distortion (THD+N)

4

< 0.015 % typ., < 0.05 % guar.

Unconventional CT/VT simulation

linear

Isolation

SELV

Usability

completely independent from internal
amplifier outputs

Connection

16 pin combination socket (rear side)

Binary Inputs
Number

10

Trigger criteria

Toggling of potential-free contacts or DC
voltage compared to threshold voltage

Input characteristics

0 ... +250 VDC threshold or potential-free

Ranges (in RMS values)

250 VDC

Resolution of threshold

1.5 V

Sample rate

10 kHz (resolution 100 µs)

Time stamping accuracy

±0.00015 % of rd.

3

±70 µs

Max. measuring time

infinite

Counting function

< 3 kHz at pulse width > 150 µs

Galvanic isolation

2 galvanically isolated groups (4 + 6)

Max. input voltage

250 VDC

Connection

4 mm (0.16 in) banana sockets or measure-
ment combination socket

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)

Technical Data

1

CMC 156 EP

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