Innovative SR750L User manual

Specifications are subject to change without notice. No liability accepted for errors or omissions. 1
User Manual
SR750L
AC/DC POWER SUPPLY & FLOAT CHARGER
with alarms & RS485 omms.
www.innovative.co.nz
Phone: [phone]
Fax: [phone]
NZ Freephone: 0800 654 668
AU Freephone: 1800 148 4 4
Email: [e-mail]

Specifications are subject to change without notice. No liability accepted for errors or omissions. 2
Safety
The user is responsible for ensuring that input and output wiring segregation complies with local standards and that in
the use of the equipment, access is confined to operators and service personnel. A low resistance earth connection is
essential to ensure safety and additionally, satisfactory EMI suppression (see below).
HAZARDOUS VOLTAGES EXIST WITHIN A POWER SUPPLY EN LOSURE AND ANY REPAIRS MUST
BE ARRIED OUT BY A QUALIFIED SERVI EPERSON.
Electrical Strength Tests
Components within the power supply responsible for providing the safety barrier between input and output are con-
structed to provide electrical isolation as required by the relevant standard. However EMI filtering components could be
damaged as result of excessively long high voltage tests between input, output and ground. Please contact our techni-
cians for advice regarding electric strength tests.
Earth Leakage
The EMI suppression circuits causes earth leakage currents which may be to the maximum allowable of 3.5mA.
Ventilation
High operating temperature is a major cause of power supply failures, for example it has been well documented that a
10
o
C rise in the operating temperature of a component will halve its expected life. Therefore always ensure that there is
adequate ventilation for the equipment. Batteries and cooling fans also suffer shortened lifetimes if subjected to high
ambient temperatures - both should be included in a routine maintenance schedule to check for signs of reduced effi-
ciency.
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 instant failure. The effects of dust are slower in causing failure of electronic equipment but all electrical equip-
ment should be cleaned free of any dust accumulation at regular intervals. This is particularly important where internal
fans are fitted.
Electro agnetic Interference (EMI)
Switching power supplies and converters inherently generate electrical noise. All wiring should be as short as practica-
ble and segregated from all equipment wiring which is sensitive to EMI. Residual noise can be reduced by looping DC
wiring through ferrite cable sleeves. These are most effective as close to the power supply as possible and as many
turns of the wire taken through the core (+ and - in the same direction) as the core will accommodate.
Fuse ratings
Check that the wiring and fuses or MCBs match the rating of the PSU or converter. Adequate fuse protection of battery
circuits is very important owing to the large potential currents available from batteries.
Connection polarity
It is critical to check the polarity carefully when connecting DC power supplies and chargers to equipment. Boost
chargers and some float chargers usuall have reverse polarity protection (RPP), which can be electronic (non-
destructive) or by an internal fuse which needs to be replaced if a battery is connected in reverse.
PSU = power supply unit B T = battery condition test E B = electronic circuit breaker
ELVD = electronic low voltage disconnect RPP = reverse polarity protection EMI = electromagnetic interference
Glossary of ter s used in our user anuals
SNMP = Simple Network Management
Protocol
LAN = local area network DOD = depth of discharge

Specifications are subject to change without notice. No liability accepted for errors or omissions. 3
1. INTRODU TION
The SR750L range is designed for use as a very accurate AC to DC power supply, or float charger for lead
acid batteries. Note that for float charging the output voltage must be set to approximately 15% above the
nominal battery voltage.
2. ONNE TIONS
If used as a float charger always connect the positive output of the power supply to the positive terminal of
the battery. The charger may be permanently connected to float charge lead acid batteries but it is essential
to periodically check the electrolyte level of flooded cells as there is always some evaporation.
Where screw/plug in terminals are fitted (eg. SR500A24FXL), and there are two terminals provided for each
polarity, both terminals must be used. This is to ensure that the current rating of the terminal block is not
exceeded.
ONNE TION LAYOUT
3. LED INDI ATION ODES
D OK LED indicates DC output is present, either from PSU or battery (if connected)
Slow flash: D LOW
Fast flash: D HIGH
POWER OK LED indicates input power on (unless there is a short circuit on the output)
4. STANDBY FUN TION
Pushing the STANDBY button turns the output of the power supply off. If there is a battery con
nected, the D OK LED remains on even though the power supply is turned off.
5. INPUT ONNE TIONS FOR D INPUT MODELS
BROWN : POSITIVE +
BLUE: NEGATIVE -
GREEN/YELLOW: EARTH
ALARM TERMINAL LAYOUT
Relay contacts shown in de-energised state (ie when there is a fault condition).
Alarm relays are energised when power supply is operating normally.
FG terminal is connected to the metal case.
D HIGH MAINS FAIL D OK
COM NC NO COM NC NO COM NC NO
FG
+
-
tempco
sensor
OUTPUT
DC HIGH MAINS
FAIL DC LOW FG
RS485
AC INPUT

Specifications are subject to change without notice. No liability accepted for errors or omissions. 4
 Industrial rated design
 Standalone - bench top or fixed mounting
 Front panel controls & indication
 Suitable for float charging of lead acid batteries
 Suitable for parallel operation
 onservative design for long life
 Precise voltage and current control
 Optional temperature compensation for charging
 Optional D input
 Optional communications port: RS232, RS485 or
Ethernet, protocols Modbus, SNMP or AS II code
♦ 24 Month Warranty
STANDARDS
EMI
Safety
Input ▪ standard
▪ option
Fusing
Overload protection
Isolation
Over voltage protection
Efficiency
Inrush current
Output power
Output voltage
Line regulation
Load regulation
Noise
Drift
Hold-up time
Thermal protection
Parallel operation
- higher power
- N+1 redundancy
Alarms
Alarm contacts
ELE TRI AL
230VAC (180 - 264), 45-65Hz
110VAC (88 -132), 45-65Hz
Internal input fuse
Constant current limit under overload and
short circuit conditions (except DC input ver-
sions which have primary current limit)
1KV DC input - output / earth
130% of nominal output voltage
> 85%
Soft start circuit
750W
Refer to model table
<0.2% over AC input range
<0.4% open circuit to 100% load
<1%
0.03% / °C
15 - 20 ms without battery
Yes, self resetting
Yes
Addition of external output diodes optional
Use with external output diodes
 Mains fail
 D low (Battery low or PSU low)
- Charger: set at 1.83V/cell
- PSU: set at 83% V out
• D high
C - NO - NC changeover rated 1A /50V DC,
32VAC
ENVIRONMENTAL
Operating
temperature
Storage temperature
Humidity
ooling
0 to + 50 °C ambient at full load
De-rate linearly >50 °C to no load @ 70 °C
-10 to 85 °C ambient
0 - 5% relative humidity non-condensing
Fan cooled
To CISPR 22 / EN55022 class A
To IEC 50 / EN60 50 / AS/NZS3260
A ESSORIES SUPPLIED
Mounting feet together with screws
AC power cord 1.5m with IEC320 socket and NZ/Aust plug
Mating screw-terminal plug for alarm outputs
Crimp lugs for stud terminal versions
DC screw terminal plug-in connector for ‘X’ version
Ideal as a Standby Float Charger
for lead acid batteries
PHYSI AL
A input connector
D connections
Alarm connections
Enclosure
Dimensions
Weight
Indication LEDs
Standby switch
IEC320 inlet socket
M8 brass stud or plug in/screw terminal block
Plug-in screw terminal block
Powder coated steel
225W x 70H x 304D mm (excl. terminals)
4.3 Kg
Standard: Power OK, Standby
With alarms: DC OK, Power OK, Standby
Turns off DC output of PSU
Optional internal V/I
meter shown
SPECIFICATIONS All specifications are typical at nominal input, full load and at 20°C unless otherwise stated.
DC power supply /charger with 3 alarm relay outputs

Specifications are subject to change without notice. No liability accepted for errors or omissions. 5
MODELS
Power Supply Battery harger
Output
Volts
(factory default)
Output
urrent (A)
(continuous)
Output
Volts*
(Charging)
Output
urrent (A)
(Charging)
SR750L12 13.8
54
(54 @ 11-14V) 13.8 54 11-14
SR750L24 24 31.2 27.6 27 22- 2
SR750L30 30 25 34.5 21.7 28-36
SR750L36 36 20.8 41.4 18 34-43
SR750L48 48 15.6 55.2 13.6 45-57
SR750L91 6 7.8 110 6.8 0-115
SR750L92 108 6. 124 6.0 100-130
SR750L93 120 6.2 138 5.4 110-145
Adjustable
range (V)
750 Watt
AC/DC Stand Alone Power Supply/Float Charger
STANDARD MODEL TABLE
* Please specify on ordering that
unit is to be used for float charging
(except for 12V model which is set
at 13.8V by default).
Rear view
OPTIONS
Temperature
compensation for
charging
D Input
Earth fault alarm
(external to PSU))
ommunications port
Temperature sensor on 1.7m lead with
adhesive pad: -4mV / °C / cell ±10%
Order Code: +TEMP O
110VDC ( -150)
220VDC (180-270)
Please note that an external fuse or MCB
must be fitted on the output for short circuit
protection.
Detects leakage to earth of DC output and
provides relay output
Code: +ALARM/EFDM (20-60V)
+ALARM/EFDH (61-150V)
Choice of RS485, RS232, ethernet (SNMP or
ASCII)
OPTIONS (continued)
Internal V/I meter
Mounting options:
19”rack mount
Wall mount enclosure
Add code: +INT-METER
2U sub rack available, ode: SR-RM2U
Optional V/I meter, ode: SR-METER
PSU may be fitted into enclosure with MCBs
and terminals. ode: SE -SR
MODEL IDENTIFI ATION ODES
SR750L 12 T F S L-485
LAN = ethernet (ASCII) LAN+ = ethernet (SNMP) 232 = RS232
485 = RS485 No = blank
L = 230V AC + switch Blank = 230V AC no switch
U = 110V AC + switch G = 110V AC no switch
H = 110V DC + switch J = 110V DC no switch
Input voltage and front
panel standby switch:
S = Stud X = Plug in /screw terminal block
Output DC Connector type:
F = Fan
Cooling
T = Yes Blank = No
Temperature Compensation
12, 24, 36, 48, 91 = 6V, 92 = 108V, 93 = 120V
DC output: Nominal voltage
A = Standard PSU/Float Charger
D = A version with alarms
L = D version with DC high alarm and optional comms port
Function
Power 750W
Optional communication port
for SR750L versions

Specifications are subject to change without notice. No liability accepted for errors or omissions. 6
Two or more SR750L power supplies may be connected in parallel for increased power or parallel redundancy. Figure
1 below shows two SR750L units connected with external diodes. It is essential that the wiring from each unit to the
load is kept identical for equal power sharing particularly when diodes are not used.
ONNE TION FOR PARALLEL REDUNDAN Y
Global Solutions Personal Focus
SR750 L
SR750 L
ALARMS
ALARMS
+
-
+
-
=
=

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

Specifications are subject to change without notice. No liability accepted for errors or omissions. 8
Innovative Energies Limited
Phone: [phone]
Freephone: 0800 654 668 (New Zealand)
1800 148 4 4 (Australia)
Fax: [phone]
Email: [e-mail]
Online: www.innovative.co.nz or www.innovative-energies.com
In Person: 1 Heremai Street, Henderson, Auckland, New Zealand
By Post: PO Box 1 -501, Auckland 1746, New Zealand
TERMS OF WARRANTY
Innovative Energies Ltd warrants its power supplies for
24 months (two years) from date of shipment against
material and workmanship defects.
Innovative Energies' liability under this warranty is lim-
ited to the replacement or repair of the defective product
as long as the product has not been damaged through
misapplication, negligence, or unauthorized modification
or repair.
Thank you for purchasing from
Innovative Energies.
We trust your power supply will exceed
your expectations and perform for years
to follow.
Sincerely,
The Innovative Energies team.
17/11/2011 11:5