background image

 

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

 

10

 

 

High performance 

DC 

UPS system

 

 

No

-

Break 

switching between charger & battery

 

 

Battery detection 

-

 regular battery presence and 

battery circuit integrity checks

 

 

Alarm relay outputs

 

 

LED flash codes for precise state indication

 

 

Deep discharge protection for batteries

 

 

ECB for battery overload & short circuit protection

 

 

Fused reverse battery polarity protection

 

 

Automatic temperature compensated output volts

 

 

Option 

-

 battery condition test (BCT) 

 

 

Option 

-

  communication interface allows remote 

monitoring & user control of BCT function 

-

 

ver-

sions

 

 

Batteries external to charger 

-

 order separately

 

ENVIRONMENTAL

 

Operating  

 

temperature

 

 

Storage temperature

 

 

Humidity

 

 

Cooling

 

 

Protection

 

♦ 

24 Month Warranty 

Input voltage

 

 

 

Fusing / protection

 

 

 

Isolation

 

 

Efficiency

 

 

Inrush current

 

 

Output power

 

 

Output voltage

 

 

Voltage adj. range

 

 

Temp. compensation

 

 

 

 

Current limit 

 

 

 

Line regulation

 

 

Load regulation

 

 

Noise

 

 

Drift

 

 

Hold

-

up time

 

 

Turn on time

 

 

Thermal protection

 

 

Overvoltage protection

 

 

 

EMI

 

 

Safety

 

 

Vibration

 

 

 

 

 

ELECTRICAL 

 

180 

-

 264V, 50/60 Hz (standard)

 

or 88 

-

 132VAC  (internal link selectable)

 

 

5A input fuse and varistor

 

Battery fuse plus ECB for battery circuit

 

 

1KV DC input 

-

 output / earth

 

 

> 85%

 

 

Soft start circuit

 

 

250W 

 

 

13.8, 27.6, 34.5, 41.4, 55.2VDC

 

 

85 

-

 105% of Vout

 

 

Temperature sensor on 1.7m lead with adhe-
sive pad:  

-

4mV / °C / cell ±10%

 

 

PSU:  

100% rated current

 

Battery:  

25

-

100% rated current (factory set)

 

 

<0.2% over AC input range

 

 

<0.4% 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 class A

 

 

IEC950 / EN60950 / AS/NZS3260

 

 

Designed to meet MIL

-

STD

-

810F Method 

514.5

 

-

20 to 50 °C ambient at full load

 

De

-

rate linearly at >50 °C to zero @ 70 °C

 

 

-

30 to 85 °C ambient

 

 

-

 95% relative humidity non

-

condensing

 

 

Natural convection except for 12V model (fan)

 

 

IP20

 

No

-

Break

™ FUNCTIONS AND ALARMS

 

Reverse polarity pro-
tection

 

 

Battery monitoring

 

 

 

 

Battery protection

 

 

-

 

low battery volts 

 

 

 

-

 

overload

 

 

 

 

-

 short circuit 

 

 

Indication LEDs

 

 

 

Alarms 

 

 

 

 

 

 

Alarm  relay contacts

 

 

 

Standby mode

 

 

 

Battery condition test 
(BCT)

 

Battery reverse connection will open internal 
fuse (and produce alarm)

 

 

Detects for presence of battery on start up, 
then every 60 minutes when charge current < 
200mA

 

 

Electronic circuit breaker (ECB) operates 
under the following conditions:

 

• 

battery voltage drops to 1.67V/cell  

-

 

auto reset

 

• 

< 300ms for load > 6 x  rated PSU cur-
rent, allows ~1.5x rated PSU current 
from battery without acting, 

 

• 

< 2ms, backed up by fuse

 

 

Green: 

Battery System OK,  Power OK

 

Red:  

 

Standby

 

 

• 

Power OK (alarm on mains fail)

 

• 

Battery System OK 

-

  alarms when battery 

voltage low (on mains fail) , battery 
missing, battery circuit wiring faulty, BCT 
fail (if enabled)

 

 

-

 NO 

-

 NC full changeover rated 1A /50V 

DC, 32VAC

 

 

Turns off DC output of PSU & allows load to 
run off battery

 

 

Optional 

-

 if enabled, default setting = 

20mins/28days).  BCT can be started and 
stopped by the user on SR250 

i

.

 

BCT relay  

provided to control an external test load.

 

incl. SR250

 

SPECIFICATIONS   

All specifications are typical at nominal input, full load and at 20°C unless otherwise stated.

 

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...

Reviews: