Omicron CMC 356, Reference Manual

Page: 53 / 114

Technical Data
53
6.3.4 Operational Limits in Conjunction with Mains Supply
Principally, the maximum output power of the CMC 356 is limited by the
mains input supply voltage.
For mains voltages of 115 V
AC
or smaller, it is also possible to supply the
CMC 356 with two phases (L-L) instead of the normal phase-neutral (L-N)
operation in order to increase the supply voltage (115 V * sqrt(3) = 200 V).
In order to limit the internal losses and to maximize the output power of the
voltage amplifier, always set the maximum test object voltage to the
minimum value possible for the test.
Beside the reduction of the available total output power of low line voltages,
no other significant degradations in the technical data of the
CMC 356
occur.
Table 6-8:
Typical total output power
at different mains voltages.
Mains
voltage Current Typical total output power
Currents only Currents AUX DC & voltage
230V 6 x 15 A 1600 W 1190 W + 300 W
6 x 25 A 1470 W 1060 W + 300 W
6 x 32 A 1320 W 910 W + 300 W
115V
1
1
After 15 min of continuous operation at full output power a duty cycle of 15 min
on/15 min off is required at an ambient temperature of 25°C. This does not apply to
the 6 x 32 A example because the output duration is limited by the current amplifier
(see Chapter 6.3.2, "Current Outputs" on page 45 for more details).
6 x 15 A 1120 W 710 W + 300 W
6 x 25 A 990 W 580 W + 300 W
6 x 32 A 860 W 450 W + 300 W
100V
1 6 x 15 A 910 W 500 W + 300 W
6 x 25 A 790 W 380 W + 300 W
6 x 32 A 670 W 260 W + 300 W