DC / DC Converter

The main functions are: either to convert the 24 V from the onboard power system to supply 12 V consumers, such as navigation and communication equipment, or to stabilise the 12 V or 24 V onboard system. With the Mastervolt converter you can opt for a 24 V main battery in any situation, without limiting your use of 12 V appliances. Mastervolt also offers converters, that can change 12 V into 24 V as well as functioning as voltage stabiliser. 

Using a Mastervolt converter eliminates the need of a so called linear converter. The linear method has a low efficiency (<50%), limited safety for connected appliances and a poor quality DC output voltage. In contrast, Mastervolt´s "Switch-Mode"- (High frequency switching technique) ensures your power system is much safer, more reliable and efficient. Mastervolt recommends using a 24 V system on all vessels of 13 m or longer. using 24 V means the cables can be thinner (leighter in weight and lower in costs), improves output and allows the installation of heavy duty power consumers, such as a bow propeller. 

Advantages:
- Lightweight. 
- Very compact. 
- High efficiency - over 85%. 
- Batteries discharge more gradually
- Less heat production. 
- Silent. 
- Stable output voltage. 
- Complete radio suppression. 
- Very long life span. 
- Full protection for expensive connected appliances. 
- Fully electronically safeguarded. 

Simple converter models have a common connection to earth.  Mastervolt offers so-called galvanic isolated converters. They isolate both, in the DC Plus and the DC Negative line. So the battery is completely isolated from the load. This means safety for the system, and prevents from distubances, wich can be transmitted over the Minus cables.

	24V > 12V	24V > 12V	24V >13,6V
	Converter 8861	Converter 8661	Converter 8770
Input Voltage	20-32V	20-32V	20-32V
Output Voltage	12V	12V	13,6V
Output Current max.	8A	12A	20A
Galvanic Isolation	yes	yes	no
Efficiency	87%	82%	94%
No Load Consumption	100 mA	200mA	30mA
Dimensions(mm)	46x119x135	70x105x220	100x100x75
Weight	0,6 kg	1kg	1,7kg
	out of production	out of production	out of production

	12V > 24V	24V > 24V	12V > 12V
	Converter 8660	Converter 8772a	Converter 8772b
Input Voltage	10-16V	19-30V	10-16V
Output Voltage	24V	24V	12V
Output Current max.	8A	20A	20A
Galvanic Isolation	no	yes	yes
Efficiency	81%	93%	93%
No load Consumption	300 mA	115mA	115mA
Dimensions (mm)	70x105x220	250x200x110	250x200x110
Weight	1 kg	3,5kg	3,5kg
	out of production	out of production	out of production

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