Atec CMC-356 User Manual

CMC 356

Test Sets

CMC 356: 6 Phase Current + 4 Phase Voltage Test Set and Commissioning Tool

The CMC 356 is the universal solution for testing all generations and types of protection relays. Its powerful six current sources (three-phase mode: up to 64 A / 860 VA per channel) with a great dynamic range, make the unit capable of testing even high-burden electromechanical relays with very high power demands. Commissioning engineers will particularly appreciate the possibility to perform wiring and plausibility checks of current transformers, by using primary injection of high currents from the test set. The CMC 356 is the first choice for applications requiring the highest versatility, amplitude and power. The CMC 356 can either be operated by the Test Universe software running on a PC or by the front panel control device CMControl.

Technical Data

Current generators

Setting range

6-phase AC (L-N) 6 x 0 ... 32 A 3-phase AC (L-N) 3 x 0 ... 64 A (Group A II B) 1-phase AC (LL-LN) 1 x 0 ... 128 A (Group A II B)

Power

DC (LL-LN) 1 x 0 ... ±180 A (Group A II B) 6-phase AC (L-N) 6 x 430 VA typ. at 25 A

6 x 250 W guar. at 20 A

3-phase AC (L-N) 3 x 860 VA typ. at 50 A

3 x 500 W guar. at 40 A

1-phase AC (LL-LN) 1 x 1000 VA typ. at 80 A

1 x 700 W guar. at 80 A

1-phase AC (L-L) 1 x 1740 VA typ. at 50 A

1 x 1100 W guar. at 40 A

1-phase AC (L-L-L-L) 1 x 1740 VA typ. at 25 A

1 x 1100 W guar. at 20 A

DC (LL-LN) 1 x 1400 W typ. at ±80 A

1 x 1000 W guar. at ±80 A

3-phase AC (L-N)

6-phase AC (L-N)

1-phase AC (L-L)

1-phase AC (LL-LN)

Output current / A

error < 0.05 % rd. 4 + 0.02 % rg. 4 typ. error < 0.15 % rd. + 0.05 % rg. guar.

< 0.05 % typ., < 0.15 % guar.

Accuracy

Distortion (THD+N)

1000

800 600 400 200

0 10 20 30 40 50 60

Output power (typ.) / VA

2000 1600 1200

800 400

0 100 120

Output power (typ.) / VA

Output current / A

1-phase AC (L-L-L-L)

20 40 60 80

Resolution 1 mA Max. compliance voltage

35 Vpk / 70 Vpk / 140 Vpk (L-N)/(L-L)/(L-L-L-L) Connection banana sockets 4 mm (0.16 in) banana sockets

(32 A continuously) Connection combination socket Group A only (25 A continuously max.)

All data specified are guaranteed, except where indicated otherwise.

OMICRON guarantees the specified data for one year after factory calibration, within 23 °C ±5 °C (73 °F ±10 °F) in the frequency range from 10 to 100 Hz and after a warm-up phase > 25 minutes

Typical AC values valid for inductive loads (e.g. e/m relays)

Rload: 0 ... 0.5 W

rd. = reading, rg. = range

THD+N: Values at 50/60 Hz, > 1 A / 20 V with 20 kHz bandwidth

For current outputs amplitude derating at > 380 Hz

Amplitude derating at > 1000 Hz

Voltage generators

Setting range 4-phase AC (L-N) 4 x 0 ... 300 V (VL4(t) automatically

calculated: VL4 = (VL1+VL2+VL3)*c

or freely programmable) 3-phase AC (L-N) 3 x 0 ... 300 V 1-phase AC (L-L) 1 x 0 ... 600 V DC (L-N) 4 x 0 ... ±300 V

Power 3-phase AC (L-N) 3 x 100 VA typ. at 100 ... 300 V

3 x 85 VA guar. at 85 ... 300 V 4-phase AC (L-N) 4 x 75 VA typ. at 100 ... 300 V

4 x 50 VA guar. at 85 ... 300 V 1-phase AC (L-N) 1 x 200 VA typ. at 100 ... 300 V

1 x 150 VA guar. at 75 ... 300 V 1-phase AC (L-L) 1 x 275 VA typ. at 200 ... 600 V

1 x 250 VA guar. at 200 ... 600 V DC (L-N) 1 x 420 W typ. at ±300 V

1 x 360 W guar. at ±300 V

300 250 200 150 100

0 10 0 200 300 400 500 600

Output power (typ.) / VA

1-phase AC (L-L)

1-phase AC (L-N)

3-phase AC (L-N)

4-phase AC (L-N)

Output voltage / V

Accuracy error < 0.03 % rd. 4 + 0.01 % rg. 4 typ.

at 0 ... 300 V

error < 0.08 % rd. + 0.02 % rg. guar.

Distortion (THD+N)

at 0 ... 300 V

0.015 % typ., < 0.05 % guar. Ranges 150 V / 300 V Resolution 5 mV / 10 mV in range 150 V / 300 V Connection 4 mm (0.16 in) banana sockets /

combination socket (1,2,3,N)

Generators, general

Frequency

range sine signals range harmonics /

interharmonics range transient signals DC ... 3.1 kHz

10 ... 1000 Hz voltage: 10 ... 3000 Hz

current: 10 ... 1000 Hz

accuracy / drift ±0.5 ppm / ±1 ppm resolution < 5 µHz

Phase

angle range -360° ... +360° resolution 0.001° error at 50 / 60 Hz voltage: 0.02° typ., < 0.1° guar.

current: 0.05° typ., < 0.2° guar.

Bandwidth (-3 dB) 3.1 kHz

Low level outputs 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)

< 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

: 0 ... ±600 VDC

threshold or potential-free

Ranges 20 V / 300 V

If equipped with ELT-1

: 100 mV / 1 V /

10 V / 100 V / 600 V

Resolution of threshold 50 mV (0 ... 20 V), 500 mV (20 V ... 300 V)

: ±2 mV, ±20 mV, ±200 mV, ±2 V,

ELT-1

±20 V in ranges Sample rate 10 kHz (resolution 100 µs) Time stamping accuracy ±0.00015 % of rd.

±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

: 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

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

THD+N: Values at 50/60 Hz, 20 kHz measurement bandwidth, nominal value, and

nominal load

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

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

rd. = reading, rg. = range

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 Measuring range 0 ... ±10 V Accuracy error < 0.003 % rg.

)

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 Measuring range 0 ... ±1 mA, 0 ... ±20 mA Accuracy error < 0.003 % rg.

)

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).

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