FAST-Bi-1K5 – User’s Manual
42
Output Power
Time of Operation
< 102% of |P
N
|
< 1530 W
Continuous
< 105% of |P
N
|
< 1575 W
120 s
≥ 105% of |P
N
|
≥ 1575 W
1 s
Table 11:
Over-power logic characteristics for a
FAST-Bi-1K5 150 A 10 V.
where |
P
N
| is the rated nominal output power (indicated as absolute value to indicate
source and sink operation) of the PS, as indicated in the technical specifications.
Crow-Bar
The energy stored in reactive loads – e.g. inductors – needs to be dissipated in
order to protect the power supply from damages when, for example, the output gets
suddenly disconnected. A hardware circuit, which includes voltage suppressors
triggering semiconductor devices, is present on each FAST-Bi-1K5 model with
different triggering thresholds. This circuit allows protecting the PS from unwanted and
dangerous over-voltage conditions. Being a hardware protection, the crow-bar is fixed
for every model and the intervention thresholds are different based on the FAST-Bi-
1K5 maximum voltage rating.
The crow-bar can be triggered in three different ways:
1.
Over-voltage condition (see
2.
Dedicated TCP-IP command (see the
“Commands Reference Manual”
for more
details),
3.
Loss of Mains or PS shutdown with the front panel power switch.
FAST-Bi-1K5 model
Over-voltage threshold
20-100
112 V
30-50
56 V
50-40
48 V
100-20
26 V
150-10
12.5 V
Table 12:
Over-voltage thresholds.
