Helios SR250C User Manual page 11

250 Watt
No-Break™ DC charger for lead acid batteries
MODEL TABLE (ratings apply to all variants)
MODELS
Output (V)
SR250C12
13.8
SR250C24
27.6
SR250C30
34.5
SR250C36
41.4
SR250C48
55.2
PHYSICAL DETAILS
AC input connector IEC320 input socket (included)
M6 brass stud or plug-in style socket & mating
DC output connec-
tions screw terminal block:
Alarm connections Plug in screw terminal block
Enclosure
Powder coated & zinc plated steel
Weight
1.7kg
Dimensions
150W x 242D x 61H mm (excluding mounting
feet and connections)
SCHEMATIC BLOCK DIAGRAM
MODEL IDENTIFICATION CODES
Specifications are subject to change without notice. No liability accepted for errors or omissions.
DC Output
PSU Rated Charge
1
(A) Limit (A) *
18.0 18.0
9.0 9.0
7.2 7.2
6.0 6.0
4.5 4.5
Input voltage and front
Panel standby switch
Output DC Connector type:
Fan cooled:
Temperature Compensation
DC output (nominal battery)
Function
Power
Recomm. Av. Peak load on
Load (A) mains fail (A)
12.0 27
5.0 13.5
3.7 10.8
3.0 9
2.0 6.7
OPTIONS
Communications Port
(SR250 i... )
Digital V/I meter
19"rack mount
Wall Mount Enclosure
2 x SR250C/i chargers (front removable) in 2U rack
For SR250
Optional Communications
485 = RS485
Interface Port
LAN+ = Ethernet (SNMP)
L = 230V AC + switch
U = 110V AC + switch
H = 110V DC + switch
M = 230V AC + switch +
S = Stud
F = Fan
T = Yes
12, 24, 30, 36, 48V
C = No-Break™ DC PSU/charger
i
= C with serial or ethernet communications port
250W
*1 This is the default setting. Please specify
if a lower limit is required at time of order
i
SR250 (please refer to separate
data sheet on comms options)
Ethernet / SNMP v1
•
RS485 / Modbus using external converter:
•
∗ +PROTOCONMB - Modbus serial
∗ +PROTOCONMB-OE - Modbus TCP
& HTTP
• RS232 / IE ASCII code
May be fitted with SR250 in 19" rack,
add: SR-METER or SR-METERV2/SHUNT
Single charger add: SR-RM2U
Dual charger (front removable) add:
SR-RM2U-DUALV2
Charger may be fitted into enclosure with
MCBs and terminals. Code: SEC-SR
i
versions:
232 = RS232 LAN = Ethernet (ASCII)
Blank = 230V AC no switch
G = 110V AC no switch
J = 110V DC no switch
(to be used with IEOVPHVAC)
X = Plug in /screw terminal block
Blank = No fan
Blank = No
incl. SR250 i
11