March 2004 3
TECHNICAL DATA / TECHNOLOGY
3 TECHNICAL DATA
GENERAL
Model IVO 12/30-2 IVO 12/50-2
Function apparatus battery charger/rectifier
Manufacturer Mastervolt, Amsterdam
INPUT
Voltage 117 Volt AC, -10+15% 117V AC, -10+15%
Frequency 50/60 Hz, ± 5 Hz 50/60 Hz, ± 5 Hz
Current 4.6A 6.4A
Power factor 1 1
Efficiency 88% 88%
OUTPUT
Main output + Slave 3A 1 + Slave 1 + Slave
Output voltage nominal: 12V DC nominal: 12V DC
Charge characteristic three-step, fully automatic, IUoUo
Kind of batteries open and sealed lead acid batteries
Charge voltages 14.25V-13.25V 14.25V-13.25V
Ripple voltage max. 100mV rms, resistive load, full power
Current 30 Amps 50 Amps
Short circuit current 30 Amps 50 Amps
ENVIRONMENTAL CHARACTERISTICS
Operating ambient temperature 0-100°F (-20 to +40°C); 100% output power
Cooling forced, by means of a fan with variable speed
Humidity max. 95% RV, not condensing
ENCLOSURE
Dimensions (hxwxd) 4’ x 8.3’ x 12.3’ (82 x 187 x 313 mm)
Protection degree IP 21
Weight 5.7 lbs (2.6 kg)
Safety IEC 335-2-29
4 TECHNOLOGY
INTRODUCTION
The IVO battery charger is a fully-automatic high-effi-
ciency battery charger/rectifier,developed and produced by
Mastervolt Amsterdam. The IVO series goes with a family
of advanced quality battery chargers. Mastervolt distribu-
tes these products worldwide. The battery charger posses-
es an outstanding charging technique in order to charge
batteries rapidly, safely and in the same time supply the
connected consumers. In addition, the charger is secured
against short circuit, overload and high temperatures in an
industrial enviroment.
CHARGING TWO OR MORE BATTERIES WITH
BATTERY ISOLATORS
If two or more batteries needs to be charged at the same
time, a battery isolator can be used. The battery isolator
divides the various battery sets from one other, in order to
avoid one set discharging the other. Because there is al-
ways a voltage drop across the isolator of 0,7V the output
voltage needs to be compensated. We can compensate
this voltage drop by removing the “diode compensation”
jumper on the front panel (see chapter 5).
CHARGING A 12V CRANKING BATTERY
In certain situations, it may occur that in addition to the
main battery(ies) a cranking battery is used as well. The
battery charger can charge a cranking battery at the same
time as the main battery.
The second output has the same output voltage
as the main output, 3 Amps maximum !
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