beautypg.com

Atec OMICRON-CMA-156 User Manual

Amplifier units

background image

Amplifier Units

CMA 156: 6 Phase Current Amplifier (6 x 25 A)

VEHV1010

CMA 156 amplifier units can be used in combination with any CMC test set or in conjunction
with digital real time power system network simulators. The outputs are galvanically separated
from the inputs as well as from ground and are used independently or in addition to those
of the CMC test sets.

The CMA 156 contains six independent current channels, arranged in two isolated groups
(A, B). The outputs can be configured in various ways (connected in parallel, in series, etc.).
For example, by using four CMA 156 units, 3 x 200 A can be generated. The connection to a
CMC test set is made by a control cable at the back of the units.

Used for tests requiring more current channels than provided by the CMC test sets.

Amplifiers, general
Input impedance

> 40 kW

Galvanic isolation Input/Output

1.5 kVDC

Galvanic isolation amplifier groups

1.5 kVDC

Connection

4 mm (0.16 in) banana sockets /
combination socket

Amplifiers, if controlled by a CMC
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

< 0.02° typ., < 0.1° guar.

Output current resolution

1 mA

Power supply
Nominal input voltage

110 – 240 VAC, 1-phase

Permissible input voltage

99 ... 264 VAC

Nominal frequency

50/60 Hz

Permissible frequency range

45 ... 65 Hz

Power consumption

< 1000 VA

Connection

Standard AC socket (IEC 60320)

Environmental conditions
Operation temperature

0 ... +50 °C (+32 ... +122 °F)

Storage temperature

-25 ... +70 °C (-13 ... +158 °F)

Humidity range

Relative humidity 5 ... 95 %,
non-condensing

Vibration

IEC 60068-2-6 (20 m/s

2

at 10 ... 150 Hz)

Shock

IEC 60068-2-27 (15 g/11ms half-sine)

EMC

Emission

Immunity

Directive 2004/108/EC (CE conform)
EN 61326-1, EN61000-6-4, EN61000-3-2/3
FCC Subpart B of Part 15 Class A
EN 61326-1, EN61000-6-2,
EN 61000-4-2/3/4/5/6/11

Safety

Directive 2006/95/EC (CE conform)
EN 61010-1, EN 60950-1, UL 61010-1,
CAN/CSA-C22.2 No 61010-1-04

Miscellaneous
Weight

15.4 kg (34.0 lbs)

Dimensions
(W x H x D, without handle)

450 x 145 x 390 mm
(17.7 x 5.7 x 15.4 in)

Certifications

TÜV-GS

Current amplifiers

2

Setting range

6-phase AC (L-N)

6 x 0 ... 25 A

3-phase AC (L-N)

3 x 0 ... 50 A (Group A II B)

1-phase AC (L-N)

1 x 0 ... 150 A

(Group A II B)

DC (L-N)

2 x 0 ... ±25 A
1 x 0 ... ±50 A

Power

6-phase AC (L-N)

6 x 70 VA at 7.5 A

3-phase AC (L-N)

3 x 140 VA at 15 A (Group A II B)

1-phase AC (3L-N)

1 x 420 VA at 22.5 A
1 x 420 VA at 45 A (Group A II B)

1-phase AC (L-L)

1 x 280 VA at 7.5 A

DC (L-N)

2 x 140 W at ±10.5 A
1 x 280 W at ±21 A (Group A II B)

3/6 phase operation

6-phase AC (L-N)

160

Output current / A

120

80
40

0

0

10

20

30

40

50

3-phase AC (A II B)

Output po

w

er / V

A

per phase

single phase operation

Output current / A

0

25

A(L-L) and
B(L-L) in
series

50

75

100

125

150

400
300
200
100

A(3L-N) and
B(3L-N) in series

A(3L-N) and B(3L-N)

in parallel

0

Output po

w

er / V

A

Accuracy

error < 0.03 % typ., < 0.1 % guar.

Distortion (THD+N)

3

< 0.1 % typ., < 0.3 % guar.

Bandwidth (-3dB)

> 8 kHz

Phase lag at 50/60 Hz

1.07°/1.28°

Input voltage

0 ... 5 V

Amplification

5 A / V

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

15 Vpk / 60 Vpk

1

Guaranteed values valid over one year within 23 °C ±5 °C (73 °F ±10 °F), in the

frequency range of 10 ... 100 Hz at nominal value. Specifications for three-phase

systems under symmetrical conditions (0°, 120°, 240°).

2

For higher current/power requirements: CMA units can be switched in parallel

3

THD+N: Values at 50/60 Hz with 20 kHz bandwidth

Technical Data

1

Table of contents