Description

Functional description
The chargers of the G22-300 series are designed in the primary switch mode technology. A constant DC voltage with low AC voltage component during the charging process ensures a maximum lifetime of maintenance-free lead batteries. As a standard, the charging of the battery follows an IUoU curve, 2nd stage charging with 10-hour timer. Furthermore, an IUIa characteristic for batteries and maintenance-free batteries can be selected by a switch.

Three built-in LEDs then indicate the following states:

• Yellow LED: charging current is flowing (LED), battery charged by 90% (LED flashes)
• Green LED: battery full charge
• Red LED: reverse polarity (LED), exceeding the charging time and over temperature (LED flashes)

Mechanical design
All components are mounted on the PCB. The PCB is in a case made of plastic sides with cover plates, which are screwed against each other, and has aluminum front and back sides. Type 24 V 12 A has a temperature-controlled cooling fan built-in.

The mains connection is made by a permanently mounted plug. The devices comply with protection class I.

CE marking
The devices meet the basic requirements of the law relating to electromagnetic compatibility (89/336/EEC EEC treaty) and the low voltage directive (73/23/EEC).

Features

• Current limiting, overvoltage protection (optional)
• short circuit, reverse polarity protection
• Reverse polarity display, charging indicator
• light weight, small dimensions
• charging of deeply discharged batteries
• three adjustable characteristics
• derating at high temperature
• Start a new charge cycle after power reset or reconnecting a new battery

Charge curves

Data

Technical data

Device type	G22–324–8	G22–324–12
Rated voltage DC *	24 V	24 V
Nominal output current DC	8 A	12 A
Voltage first charge level	28,8 V	28,8 V
Voltage second charge level	27,6 V	27,6 V
Current limit approx.	± 2% Nennstrom DC
Characteristic	IU, IUIa, factory set at IU
Radio interference network side	EN 55014
Protection class	I
Harmonic power	EN 61000-3-2 class A
Standards	EN 60335, EN 50081-1, EN 50082-1, EN 61000-3-2
Reverse polarity	electric
Back current at power failure	< 1 mA
Input voltage AC, 50/60 Hz	230 V
Input current at 230 V approx. (rms)	1,50 A	2,20 A
Switching frequency approx.	80 kHz
efficiency approx.	0,88	0,87
Ambient temperature range	0º C / +35º C
Ripple of the output current	< 3%
Accuracy of the output voltage between 195-265 V	< 0,5%
Load regulation **	< 2%
Cooling	Convection	Ventilation
Weight	2,7 kg
Dimensions (L x B x H)	210 x 170 x 90 mm (Höhe ohne Griff)

*	other voltages and currents available on request
**	measured at the cable end

Fact sheet

• CHARGOMATIC G22-300 fact sheet [german, PDF, 410 KB]