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1.6
Power Requirements
Power Supply Interface Requirement
DC -48 V Power Feed
Table 1.6-1 Power Supply Requirement at Interface "A"
Item
(1) Nominal voltage
(2) Normal service
voltage range
(3) Abnormal service
voltage range
(4) Voltage change
due to the regulation
of the power supply
BroadOne GX4000 Manual (R3.0) issue 1.03
Table 1.6-1 shows the power supply interface requirement in accordance
with ETSI EN300 132-2 V2.2.2 (2007-10) below;
-48 Vdc with positive grounded
Note*: The voltage of interface "A" will be complemented by a 24 cell
lead-acid battery.
-40.5 Vdc to –57.0 Vdc
(a) Abnormal service voltage under steady-state condition
GX4000 will not suffer any damage when subjected to the following
voltage ranges; 0.0 to –40.5 Vdc and –57 to –60 Vdc
(b) Recovery from steady state abnormal voltage
Following the restoration to the normal voltage range, GX4000 will
automatically restore service and resume operation according to its
specification. And the abnormal voltage shall not lead to the
disconnection of the power supply by causing circuit breakers & so on.
(c) Voltage Transients caused by power distribution system
GX4000 will not be damaged under the test model in accordance with
EN61000-4-5.
(d) Recovery from voltage transients
GX4000 will continue to function within its operational specification
without requiring manual intervention.
For the single rate of the voltage at interface "A" with an amplitude of 6V±
10% for both the fall and rise time of the voltage and a change rate within the
range 3 V/ms to 7 V/ms, GX4000 shall operate according to the specification
and no loss of data or false alarm shall occur.
Specification
System Description
1-29
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