Omicron CMC 156, Reference Manual

Page: 33 / 76

Technical Data
33
5.2.1 Current Outputs CURRENT OUTPUT 1-3
3 current outputs
1
for standard design
Output currents
3-phase AC (L-N)
1-phase AC (L-N)
in parallel
1-phase DC (L-N)
3
×
0 to 12.5 A
1
×
0 to 12.5 A
1 × 0 to 21 A
1
×
0 to
±
12.5 A
Power
2
3-phase AC (L-N)
1-phase AC (L-L)
3
1-phase AC (L-N)
4
1-phase DC (L-N)
typ. 3
×
40 VA
typ. 1
×
80 VA
typ. 1 × 65 VA
typ. 1
×
62 W
guar. 3
×
37.5 VA
guar. 1
×
75 VA
guar. 1 × 62 VA
guar. 1
×
59 W
Resolution < 500 µA
Accuracy
5
typical error
< 0.03 % rd.
+ 0.01 % of rg. guaranteed error
< 0.08 % rd.
+ 0.02 % of rg.
Harmonic distortion
6
typ. 0.03 % guar. < 0.07 %
Short-circuit protection
Open-circuit protection Unlimited against N and from L to L.
Open outputs (idling) allowed.
Connection 4 mm banana sockets or amplifier
combination socket.
Isolation Reinforced isolation to mains and to all SELV
interfaces.
Table 12 Current outputs with standard design
1
Data for 3-phase systems are valid under symm. conditions (0 °, 120 °, 240 °).
2
For higher current or output power demands connection of an external amplifier is possible (e.g.
CMA current amplifier). The power data refers to an output current of 12.5 A
eff
or 12.5A
DC
.
3
Single-phase model (operation with two phases in phase opposition):
two currents in series, additional adapter SPA156 recommended.
4
2 phases (2 x 10.5 A) in parallel for in-phase operation.
5
rd. = reading; rg. = range, whereat n % of rg. means: n % of upper range value (1.25 or 12.5 A).
6
Values at 50/60 Hz, 20 kHz measuring band width, nominal value and nominal load.