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Specifications are subject to change without notice.   No liability accepted for errors or omissions.

 

11

 

PHYSICAL DETAILS

 

AC input connector

 

 

DC output connec-
tions

 

 

Alarm connections 

 

 

Enclosure

 

 

Weight

 

 

Dimensions

 

 

IEC320 input socket (included)

 

 

M6 brass stud or plug

-

in style socket & mating 

screw terminal block: 

 

 

Plug in screw terminal block 

 

 

Powder coated & zinc plated steel

 

 

1.7kg

 

 

150W x 242D x 61H mm (excluding mounting 
feet and connections)

 

 OPTIONS

 

Communications Port

 

(SR250

i...

)

 

 

 

 

 

 

 

 

Digital V/I meter

 

 

 

19”rack mount

 

 

 

 

Wall Mount Enclosure

 

 

• 

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

 

DC Output

 

Output (V)

 

PSU Rated  

(A)

 

Charge

 

 Limit (A) *

1

 

Recomm. Av. 

Load  (A)

 

Peak load on 

mains fail (A)

 

SR250C12

 

13.8

 

18.0

 

18.0

 

12.0

 

27

 

SR250C24

 

27.6

 

9.0

 

9.0

 

5.0

 

13.5

 

SR250C30

 

34.5

 

7.2

 

7.2

 

3.7

 

10.8

 

SR250C36

 

41.4

 

6.0

 

6.0

 

3.0

 

9

 

SR250C48

 

55.2

 

4.5

 

4.5

 

2.0

 

6.7

 

MODELS

 

MODEL TABLE (

ratings apply to all variants)

 

MODEL IDENTIFICATION CODES

 

SR250

i

 

(please refer to separate 

data sheet on comms options)

 

250 Watt  

No-Break™ DC 

charger for lead acid batteries 

Optional Communications 
Interface Port 

 

incl. SR250

 

L

 = 230V AC + switch

 

 

Blank = 230V AC no switch

 

U

 = 110V AC + switch 

 

G

 = 110V AC no switch 

 

H

 = 110V DC + switch 

 

= 110V DC no switch

 

M

 = 230V AC +  

(to be used with 

IEOVPHVAC

)

 

Input voltage and front

 

Panel standby switch

 

No

-

Break

™ 

DC PSU/charger 

 

i

 

 = 

C

 

with serial or ethernet communications port

 

Function

 

Power

 

250W

 

For SR250

i

 versions:

 

485 

= RS485

 

232

 = RS232

 

LAN 

= Ethernet (ASCII)

 

LAN+ 

= Ethernet (SNMP)

 

S

 = Stud

 

 

 

X

 = Plug in /screw terminal block

 

F

 = Fan

 

 

 

Blank = No fan

 

T

  = Yes

 

 

 

Blank  = No

 

12, 24, 30, 36, 48V

 

Output DC Connector type: 

 

Fan cooled: 

 

Temperature Compensation 

 

DC output (nominal battery)

 

2 x SR250C/i chargers (front removable) in 2U rack

 

*1  

This is the default setting.   Please specify 

if a lower limit is required at time of order

 

SCHEMATIC BLOCK DIAGRAM

 

Summary of Contents for SR250C

Page 1: ...d 64 9 8350700 Sydney 61 2 9809 5022 Singapore 65 6871 4140 www heliosps com SR500C SR750C with optional V I meter shown SR250C User Manual SR250C SR500C SR750C No BreakTM DC UPS 15 09 2016 REFER TO B...

Page 2: ...shortened lifetimes if subjected to high ambient temperatures Water Dust Every effort must be made in the installation to minimise the risk of ingress of water or dust Water will almost always cause...

Page 3: ...tery circuit integrity Fast electronic battery overcurrent protection Deep discharge protection by disconnecting the load at low battery voltage Temperature compensated output voltage using external t...

Page 4: ...anks Power OK YES Battery Missing YES Battery Low YES Battery Condition Test Fail YES Alarms Available 2 Peak load connection using 1 x No Break DC charger Use this connection when there is a connecte...

Page 5: ...tteries 7 Connect input power Charger should be fully operational at this stage ALARM BCT RELAYS Relay contacts shown in de energised state ie when there is a fault condition Alarm relays are energise...

Page 6: ...eshold for battery detection and BCT Note that if the voltage drops to this level during a BCT the test is aborted and the BAT LOW SYS alarm shows Vshutd Internal voltage level of the power supply dur...

Page 7: ...al System Normal Input power on battery circuit is OK Normal Normal Battery detection in progress Alarm Normal Input power on battery system fault 1 Internal battery fuse has opened or 2 Battery circu...

Page 8: ...ve is also activated for the low voltage disconnect function on mains fail no input power It will reset when input power is restored or can be manually reset by briefly shorting the BAT and LOAD termi...

Page 9: ...Specifications are subject to change without notice No liability accepted for errors or omissions 9 This page is intentionally blank...

Page 10: ...open circuit to 100 load 1 output voltage 0 03 C 20 ms without battery nominal max Vin 1 sec Yes self resetting Over voltage protection on output at 130 of nominal output voltage CISPR 22 EN55022 cla...

Page 11: ...eak load on mains fail A SR250C12 13 8 18 0 18 0 12 0 27 SR250C24 27 6 9 0 9 0 5 0 13 5 SR250C30 34 5 7 2 7 2 3 7 10 8 SR250C36 41 4 6 0 6 0 3 0 9 SR250C48 55 2 4 5 4 5 2 0 6 7 MODELS MODEL TABLE rati...

Page 12: ...uit to 100 load 1 output voltage 0 03 C 20 ms without battery nominal max Vin 2 sec Yes self resetting Over voltage protection on output at 130 of nominal output voltage to CISPR 22 EN55022 class A to...

Page 13: ...May be fitted with SR500 in 19 rack add SR METER or SR METERV2 SHUNT Charger may be fitted into enclosure with MCBs and terminals Code SEC SR Use external output diode eg P50 Add code INT METER Ethern...

Page 14: ...uit to 100 load 1 output voltage 0 03 C 20 ms without battery nominal max Vin 2 sec Yes self resetting Over voltage protection on output at 130 of nominal output voltage to CISPR 22 EN55022 class A to...

Page 15: ...for S versions OPTIONS 19 Rack Mount Digital V I meter Wall Mount Enclosure Parallel redundancy Internal V I Meter Communications Port SR750i MODEL IDENTIFICATION CODES 2U sub rack option add SR RM2U...

Page 16: ...ip defects Liability under this warranty is limited to the replacement or repair of the defective product as long as the prod uct has not been damaged through misapplication negligence or unauthorized...

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