Technical Support Line +44 (0)23 9269 6638 2405STE PAK200479 Issue 04I May 2016
Page 1 of 4
ELMDENE INTERNATIONAL LIMITED
3 KEEL CLOSE
INTERCHANGE PARK
PORTSMOUTH
HAMPSHIRE
PO3 5QD, UK
TEL: +44 (0) 23 9269 6638
FAX: +44 (0) 23 9266 0483
www.elmdene.co.uk
2405STE Intelligent Switch Mode Power Supply: EN54-4 Certified
27.6Vdc 5A PSU with Intelligent Battery Charging, Monitoring and Remote Fault Signalling
O
VERVIEW
The 2405STE is a fully featured EN54-4 approved power supply ideal for use in Fire Systems and Access control applications. Its regulated
27.6V dc output will supply up to 5A continuous into the load, in addition to providing up to 1.6A for charging the standby batteries. The
power supply output features electronic short circuit protection under both mains and standby battery operation. Maximum battery life is
assured through continuous active battery monitoring and the use of a three stage charger, comprising bulk, absorb and temperature
compensated final float phase depending upon battery condition. Deep discharge protection prevents premature battery failure when
operating from standby for extended periods. Two sets of volt free solid state relay fault output signal (i) loss of mains and (ii) battery fault,
charger fault and loss of output.
•
Certified by VdS to EN54-4:1997 +A1: 2002 + A2: 2006
•
5A current to load at 27.6V dc nominal regulated output
•
Electronic overload protection shuts down output until overload or short circuit is removed
•
Battery Monitor detects battery missing, low battery, short-circuit or reverse connection
•
Battery charging circuit is energised only when a battery is correctly connected and the battery voltage is greater than 14V
•
No loss of output during automatic connection of battery to load on loss of mains
•
Deep discharge protection disconnects battery from load when battery voltage falls to 21V
•
Automatic start-up on battery only
•
Fault indicator LED (Red) flashes on detection of output fault, battery fault, charger fault and mains failure
•
Mains indicator LED (green) showing mains present
C
OMPLIANCE
This power supply unit complies with the following European Directives:
Low Voltage: 2014/35/EU
EMC: 2014/30/EU
WEEE: 2012/19/EU
RoHs2: 2011/65/EU
CPR 305/2011 EU
S
PECIFICATION
Input
Voltage
93Vac minimum, 264Vac maximum
Frequency
45Hz – 65Hz
Current
2.5A maximum for a 5A load and 1.6A battery charging
Inrush current
30A maximum @ 25
O
C, 110Vac for 10ms
Mains input fuse
T3.15A 20mm, 250Vac HBC
Output
Voltage
26.0Vdc – 28vdc on mains power / 18Vdc – 26Vdc on battery standby
Load Current
0 - 5A
Ripple
100mV max over full rated mains voltage
Load output fuse
F5A 20mm, 250Vac glass
Overload
Electronic shutdown at 8A until overload or short circuit removed
Standby Battery
Battery Capacity
2 x 17Ah to 2 x 38Ah maximum (e.g. Yuasa NP17-12 or NP38-12) series connected
Battery fuse protection
F5A 20mm glass
Battery Charging
Constant current (1.6A) bulk charging to 80% within 24 hours, float charging to 100% within 48 hours
Low Battery Threshold Voltage
23V nominal
Deep discharge protection
Battery disconnect at 21V nominal
Quiescent current - no load
25mA nominal
Quiescent current - battery cut off
<70
µ
A
Mechanical
Case material
1.2mm steel, white powder coated
Size
400mm W x 420mm H x 80mm D
Weight
6.2kg (excluding batteries)
Environmental
Temperature
-10 to +40
O
C (operating) 95% RH non-condensing
-20 to +80
O
C (storage)
C
ONNECTIONS
O/P + and -
Voltage output to load
PSU Fault
Solid State Relay output contacts
EPS fault
Solid State Relay output contacts
Temp sensor
Connection to battery temperature sensor
BATT + and -
Connections to standby batteries
FAN + and -
No Connection
VdS
G209142
09
0786-CPD-20787
