DC UPS ADSUM
Battery System for CNS.
Standby Power for Comms Nav aids Surveillance
The ADSUM is in use at London Airports and Regionally. The ADSUM was
designed to meet a British Airports Authority requirement to provide
Standby Power in the case of a Mains failure, at Stansted Airport. The challenge was to meet
a 10 year guarantee, with minimal or no maintenance, ideally.
A DC UPS (ADSUM) is available to support the 1240 CNS Multiplexer & other
Equipment loads for 24Vdc or 48Vdc Battery Systems, up to 250W for more than 24Hrs.
Each 1240 CNS Multiplexer requires less than 20W (12W typ.).
ADSUM is housed in the 10C3 Chassis, format is 19inch x 1U x 40cm. Batteries are mounted internally
for requirements up to 60W providing 4Hrs standby power. For greater Standby Power up to 250W, the Batteries can be mounted on a
Cabinet shelf.
DC UPS Power Supply
Back Up Power and Battery Charger
Easy to install
Compact size
The ADSUM provides continuous power to the connected loads (e.g. 1240 CNS Multiplexer),
when there is a mains supply available and maintains the required charge for
the standby batteries (in the event of a mains failure).
The ADSUM supervisory circuits will give an alarm should the mains supply fail and then
continuously monitors the battery voltage, giving another alarm “Battery low” when this
falls below a configurable set level.
The ADSUM can be set to either, continue supplying power as long as the batteries are
capable or save the batteries from requiring replacement. From a cost point of view
maintaining Airport Operations as long as possible (albeit limited) will far outway the
cost of replacement batteries.
When configured for saving the batteries, they will be disconnected if their charge drops below a preset threshold, to
avoid damage. Upon the reapplication of a mains supply, an indicator
will show that the battery is low until it has accumulated sufficient charge.
If the batteries becomes disconnected, i.e. open circuit, this also triggers an alarm. It
is recommended to periodically test the Standby Power. The frequency of
the testing is dependent on the Business case (assessing the impact on
the Business of the Standby Power not functioning as intended and the
cost to carry out the test).
Signals are given on the LED panel and via DB-9 connector located on
front panel for use by an external monitoring/alarm system.
Status of a remote 10C3 Chassis (far end), incorporating the ADSUM, is communicated back locally via
a spare contact closures on the e.g. 1240 CNS Muliplexer.
10C3 monitoring and signalling for:
Mains on
Battery connected
Battery disconnected
Battery low
No mains
Do you have any questions?
For further information please contact FTI.
You can ask us a question
using the form or please call us on
+44 (0) 24 7641 7070.