Helios SR250C Manuel utilisateur

Helios Power Solutions - Auckland: +64 9 8350700 - Sydney: +61 9809 50 - 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 BACK PAGE FOR CUSTOMISED MODELS

Specifications are subject to change without notice. No liability accepted for errors or omissions. 2

Safety

The user is responsib e for ensuring that input and output wiring segregation comp ies with oca standards and that in

the use of the equipment, access is confined to operators and service personne . A ow resistance earth connection is

essentia to ensure safety and additiona y, satisfactory EMI suppression (see be ow).

HAZARDOUS VOLTAGES EXIST WITHIN A POWER SUPPLY ENCLOSURE AND ANY REPAIRS MUST

BE CARRIED OUT BY A QUALIFIED SERVICEPERSON.

Electrical Strength Tests

Components within the power supp y responsib e for providing the safety barrier between input and output are construct-

ed to provide e ectrica iso ation as required by the re evant standard. However EMI fi tering components cou d be dam-

aged as resu t of excessive y ong high vo tage tests between input, output and ground. P ease contact our technicians

for advice regarding e ectric strength tests.

Earth Leakage

Where fitted, EMI suppression circuits cause earth eakage currents which may be to a maximum of 3.5mA.

Ventilation

High operating temperature is a major cause of power supp y fai ures, for examp e, a 10oC rise in the operating tempera-

ture of a component wi ha ve its expected ife. Therefore a ways ensure that there is adequate venti ation for the

equipment. Batteries in particu ar suffer shortened ifetimes if subjected to high ambient temperatures.

Water / Dust

Every effort must be made in the insta ation to minimise the risk of ingress of water or dust. Water wi a most a ways

cause instant fai ure. The effects of dust are s ower in causing fai ure of e ectronic equipment but a e ectrica equip-

ment shou d be c eaned free of any dust accumu ation at regu ar interva s.

Electromagnetic Interference (EMI)

Switching power supp ies and converters inherent y generate e ectrica noise. A wiring shou d be as short as practica-

b e and segregated from a equipment wiring which is sensitive to EMI. Residua noise can be reduced by ooping DC

wiring through ferrite cores (s eeves). These are most effective as c ose to the power supp y as possib e and as many

turns of the wire taken through the core (+ and - in the same direction) as the core wi accommodate.

External fuse rotection

Fuses or circuit breakers must be used in a battery circuits to protect against short circuits. Externa fuses shou d be

used for power supp ies/ chargers even though they are usua y interna y protected.

Connection olarity

It is critica to check the po arity carefu y when connecting DC devices even with mode s which have non-destructive

reverse po arity protection.

PSU = power supp y unit BCT = battery condition test ECB = e ectronic circuit breaker

ELVD = e ectronic ow vo tage discon-

nect

RPP = reverse po arity protection EMI = e ectromagnetic interference

Glossary of terms used in our user manuals

SNMP = Simp e Network Management

Protoco

LAN = oca area network DOD = depth of discharge

Specifications are subject to change without notice. No liability accepted for errors or omissions. 3

No-Break™ SYSTEM BLOCK DIAGRAM

The No-Break™ DC power supply is designed to provide DC power and charge lead acid batteries for

critical back up applications.

No-Break™ DC systems ensure maximum uptime of the system, and life of the battery, by providing:

♦ Accurately regulated output voltage

♦ Constant current limited output

♦ onitoring of the battery status and battery circuit integrity

♦ Fast electronic battery overcurrent protection

♦ Deep discharge protection by disconnecting the load at low battery voltage.

♦ Temperature compensated output voltage using external temperature sensor

♦ Alarm contacts for fault monitoring

♦ Adjustable battery charge current limit

♦ Battery condition testing (BCT) - optional on “C” models, standard on “I” models which have a com-

munication interface

Option l fe tures:

♦ Communication interfaces, serial (RS232, RS485) or ethernet to enable remote monitoring of the

power supply and control of the battery condition test function

♦ odbus and SN P protocols

♦ Internal V/I meters on 500W and 750W

MAINS FAI

A ARM

Specifications are subject to change without notice. No liability accepted for errors or omissions. 4

#1. 1 x No-Break™DC charger and 1 x batter bank

This is the basic connection which is most commonly used, and provides

adequate protection for the ma ority of systems requiring DC back up in

the event of a mains power failure.

Power OK YES

Battery Missing YES

Battery ow YES

Battery Condition Test Fail YES

Alarms Available

Single battery DC

UPS

#3. 1+1 redundanc using two No-Break™DC

chargers and two batter banks

Power OK YES

Battery Missing YES

Battery ow 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 connected load with a peak current

likely to exceed 1.5 times the rated current of the charger. Standing

loads are connected normally and an optional external low voltage dis-

connect may be used for the peak load.

Power OK YES

Battery Missing YES

Battery ow YES

Battery Condition Test Fail YES

Alarms Available

Power OK YES

Battery missing YES

Battery low YES

Battery condition test fail YES

Alarms available

#4 1+1 redundanc for s stems with high peak loads

For super critical ap-

plications

DC UPS for high peak

loads

Specifications are subject to change without notice. No liability accepted for errors or omissions. 5

CONNECTION PROCEDURE

1 Check input and output voltages of system, ensure that they match the equipment.

2 Connect battery /batteries to BATTERY + and BATTERY - terminals. Although there is built in reverse

polarity protection, under some circumstances reverse polarity connection will not only result in the

rupture of the internal battery protection fuse but destroy the input circuitry of the unit.

3 The ECB and battery circuit may be tested at this point. To close the ECB with no mains power pre-

sent, briefly short together the BATTERY –ve and LOAD –ve terminals. The battery voltage will

then appear at the load terminals, BATT LOW relay energises & BATT SYSTEM OK LED turns on. The

POWER OK LED stays on for about 30s. Disconnect one battery lead briefly to open the ECB.

4 Connect load/s to LOAD+ and LOAD- terminals.

5 To minimize the volt drop at the output connections always use all the terminals provided by linking

them together.

6 Place temperature sensor probe near or on batteries.

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 energised when power supply is operating normally. BCT relay is energised when battery

condition test is in progress.

OUTPUT FUSES/ MCB RATING

The battery circuit is the one which has the highest fault current potential and fuses/ CBs should be correctly

rated for the wiring used.

FRONT PANEL LEDS (with built-in switches)

BATTERY SYSTEM OK: LED on: Battery present and above V batl.

Note: If the battery condition test function is enabled, pushing this switch

for approx. 2 sec will manually initiate a battery condition test.

POWER OK: LED on: Input power present

LED off: No input power or charger in standby mode

STANDBY: LED on: Charger in standby mode (no output from charger)

Note: Push standby button to turn off charger, this allows load to run off bat

tery. Push button again to turn on charger.

AUX

(BCT)

MAINS FAIL

(POWER OK)

BATTERY LOW

(BATT SYS OK)

COM NC NO COM NC NO COM NC NO

ALARMS (refer to specific data sheets for operational details)

POWER OK: Approx. 30 second delay before activation.

BATTSYS OK: Battery detection alarm my take up to 60 minutes to activate during normal operation

Specifications are subject to change without notice. No liability accepted for errors or omissions. 6

*1 This a arm operates on y when no input vo tage present.

Parameter Default Settings Special

Setting

V nomin l 12 24 30 36 48

V output (20°C) 13.8 27.6 34.5 41.4 55.2

B tDetect (mins) 60 60 60 60 60

Vpres 12.2 24.4 30.5 36.6 48.8

Vb tl *1 11 22 27.5 33 44

Vshutd: 11.5 23 28.7 34.5 46

Vdisco: 10 20 25 30 40

Bccl (%) 100 100 100 100 100

Comms

BCTim (mins) 20 20 20 20 20

Time between BCT (d ys) 28 28 28 28 28

CC Mins: 40 40 40 40 40

CC Hrs: 23 23 23 23 23

CC D ys: 27 27 27 27 27

MfiBCT: 30 30 30 30 30

Allow retest fter BCT f il Yes Yes Yes Yes Yes

T mf (hours) 4 4 4 4 4

T mfb (mins) 5 5 5 5 5

Scheduled BCT Optional (no unless specified)

SNMP VERSIONS ONLY:

Al rm m sk Refer to SN P user manual

DHCP Disabled, IP address = 192.168.2.10

Explanation of Terms:

B tDetect: Time between battery detections

Vpres: Voltage threshold 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 during battery detection and battery

condition tests.

Vb tl: BAT LOW alarm voltage level

Vdisco: Voltage at which the load is disconnected from the battery during mains fail

Bccl: Battery charge current limit as percentage of the rated power supply current

Comms (only on

-i versions)

Communication mode of PSU: F = continuous data stream of status

= responds only to request made by a controller

BCTim: Length of battery condition test

CC Mins: Time in minutes between automatically scheduled BCTs

CC Hrs: Time in hours between automatically scheduled BCTs

CC D ys: Time in days between automatically scheduled BCTs

Note: The total time interval between battery condition tests (BCTs) is the sum total of the three 'CC'

MFiBCT: Time in minutes before the mains fail check during the BCT (SR100 only)

T mf ax. time of a mains fail without resetting to full BCT interval

T mfb ax. time of mains fail before BCT is discontinued

Specifications are subject to change without notice. No liability accepted for errors or omissions. 7

B ttery condition test (BCT)

An internal jumper must be fitted to enable the automatic battery condition test function. If this jumper is

fitted the battery condition test function may also be initiated manually by pushing the BATT SYS OK but-

ton for approx. 2 seconds.

B ttery Condition Test F il Reset

If the system fails the BCT the BATT SYS OK LED continues flashing and the BATT LOW alarm latches

until either both the mains power input and the battery are disconnected briefly, or the system passes

the next BCT.

Battery

System OK

LED

Power OK

LED

Power

Stand-by

LED

Battery

System

OK Alarm

Power OK

Alarm Condition

Normal Normal 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 circuit wiring open circuit, battery missing, ECB has tripped

Normal Alarm Input power off, battery system is OK (battery volts > Vbatl)

Alarm Alarm Input power off and battery has discharged to < V batl

Alarm Alarm Input power off, ELVD has activated and disconnected battery from load.

Normal Normal PSU in standby, input power on, battery system OK

Alarm Alarm

PSU is in standby and battery has discharged to < Battery Low, unit will continue

delivering battery current until next level initiates ELVD.

Alarm Alarm PSU is in standby and ELVD has activated and disconnected battery from load.

Normal Normal BCT in progress

Alarm Normal Input power on, BCT failed (battery voltage < Vpres during BCT)

LEGEND : =Off =fast flash

=On =slow flash

LED FLASH CODES

Specifications are subject to change without notice. No liability accepted for errors or omissions. 8

SR250 CONNECTION LAYOUT

(Plug in/screw terminals)

AC INPU

+ - + -

LOAD BATT

ALARMS

AC INPU

ALARMS

SR250 CONNECTION LAYOUT

(Stud terminals)

+ COM LOAD- BATT-

AC INPUT

ALARMS

SR500/750 CONNECTION LAYOUT

Stud terminals)

+ COM LOAD- BATT-

NOTE: LOAD+ / BATT+ termina s

are inked interna y and are connect-

ed to the +COM termina on the stud

connection versions.

OPERA ION OF ELEC RONIC CIRCUI BREAKER (ECB) FOR PRO EC ION OF CHARGER & BA ERY WIRING

The ECB will operate on overcurrent as above & 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- terminals together when there is no input power.

Max. allowable

load amps

(x I rated)

2.5

2ms 300ms ime

6x I rated

for 300ms max.

INPUT POWER ON

ECB automatically resets IPSU = 1x I rated

IBAT = 1.5x I rated

ECB trips & latches off

until input power is

restored

IPSU = 0

IBAT = 1.5x I rated

7x I rated for

300ms max.

Short circuit condition,

ECB trips within 2ms

INPUT POWER OFF

1.5 x I rated until LV

disconnect operates

Short circuit condition,

ECB trips within 2ms

Max. allowable

load amps

(x I rated)

1.5

CONNEC ION LAYOU S

2.5 x I rated peak

current allowed

Specifications are subject to change without notice. No liability accepted for errors or omissions. 9

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Specifications are subject to change without notice. No liability accepted for errors or omissions. 10

 High performance DC UPS s stem

 No-Break switching between charger & batter

 Batter detection - regular batter presence and

batter circuit integrit checks

 Alarm rela outputs

 LED flash codes for precise state indication

 Deep discharge protection for batteries

 ECB for batter overload & short circuit protection

 Fused reverse batter polarit protection

 Automatic temperature compensated output volts

 Option - batter condition test (BCT)

 Option - communication interface allows remote

monitoring & user control of BCT function - i ver-

sions

 Batteries external to charger - order separatel

ENVIRONMEN AL

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

emp. compensation

Current limit

Line regulation

Load regulation

Noise

Drift

Hold-up time

urn on time

hermal protection

Overvoltage protection

EMI

Safety

Vibration

ELEC RICAL

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

0 - 95% relative humidity non-condensing

Natural convection except for 12V model (fan)

IP20

No-Break™ FUNC IONS 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

(BC )

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)

C - 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. S 250i

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

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