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System Description
(4) Abnormal service
voltage under
temporary conditions
(5) Voltage changes
due to the regulation
of secondary voltage
(6) Slow voltage
fluctuations
(a) (a) Static tolerance: +/- 10 %
(7) Supply protection
at interface "A"
(8) Surge current on
connection of
interface "A"
(9) Electrical safety
requirement
(10) EMC
requirement
1-32
(c) Abnormal service voltage under temporary conditions
Abnormal service voltage under temporary conditions and surge testing
simulating these temporary conditions are covered by ETS 300 386-1.
(d) Recovery from steady state abnormal voltage
Abnormal service voltage shall not lead to the disconnection of power
supply units e.g. by causing circuit breakers, fuses or other such devices
to operate.
Abnormal service voltage under temporary conditions and surge testing
simulating these temporary conditions are covered by ETS 300 386-1.
(a) Voltage interruption of the ac power supply
Where automatic switching is used to maintain continuity, short interruption
and fluctuation of the voltage measured at interface "A" may occur. GX4000
shall continue to function correctly when the duration of the interruption is
less than or equal to 20 ms at normal supply voltage.
GX4000 shall continue to function correctly in accordance with its
specification within the envelope of the voltage fluctuations shown below:
(b) for <500 ms with respect to the rms value: +/- 15%
for < 2 ms with respect to actual value: +/- 40%
The supply to interface "A" shall be protected by circuit breakers.
The ratio of the instantaneous surge current It to maximum current Im at
interface "A", under any random sequence of switching operations, shall not
exceed the limit shown in Figure 1.6-2.
Safety requirement at interface "A" and 230Vac is in accordance with
EN60950 as for hazardous voltage.
In accordance with ETS 300 386-1.
Fujitsu and Fujitsu Customer Use Only
BroadOne GX4000 Manual (R3.0) issue 1.03
(c)
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