Technical Data
51
6.3.4 Operational Limits in Conjunction with Mains Supply
A mains power supply voltage of 115 VAC or below limits the maximum
possible output power of the CMC 353.
In order to increase the output power when operated with a mains power
supply voltage of ≤ 115 VAC, you can supply the CMC 353 from two phases
(L-L) rather than from the normal one phase-neutral (L-N). This increases
the power supply by the factor √3 (115 VAC * √3 = 200 V).
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.
Table 6-8:
Typical total output power
at low mains power supply
voltages
6.3.5 Operational Limits with Current and Voltage Amplifier in
Parallel
A parallel operation of current and voltage amplifier lowers the maximum
output power of the CMC 353.
To limit the internal losses and to maximize the output power of the voltage
amplifier, set the maximum test object voltage to the minimum value
possible for the test. To minimize no-load losses, do not route unused
amplifiers in the Hardware Configuration.
Table 6-9:
Typical test set uptime for
different output powers
when operating at an
ambient temperature of
23 °C
Mains
1
1
At an ambient temperature of 23 °C, after 10 min of continuous operation at full output
power, allow a duty cycle of 10 min on/10 min off.
Current amplifier Voltage Amplifier AUX DC
115V 3x250W @ 20A 3x85W @ 85V 45W @ 110V
100V 3x200W @ 20A 3x85W @ 85V 45W @ 110V
90 V 3 x 150 W @ 20 A 3 x 85 W @ 85 V 45 W @ 110 V
Current amplifier Voltage Amplifier t1
1
1
t1 = maximum possible uptime for a cold CMC 353 test set.
3 x 200 W @ 20 A 3 x 60 W @ 85 V > 1800 s
2
2
At an ambient temperature of 23 °C, when operating the CMC 353 test set with a low mains
power supply, allow a duty cycle of 10 min on/10 min off.
3 x 250 W @ 20 A 3 x 85 W @ 85 V 600 s
3 x 430 W @ 20 A 3 x 100 W @ 85 V 500 s
To Next Page
Loading...
Need help?
General
