This DC-DC converter module converts a nominal 48V (42V-61.5V) into 24V (25A maximum) accurate voltage at the output.
The unit comes with the option to set several similar modules in parallel in order to gain more power and redundant operation (N+1).
Output voltage is set by a single trimmer-potentiometer, using a small screwdriver.
Each DC to DC Power Converter is protected against input low/high voltage, output over-voltage, over temperature and output over-load.
A low-voltage-disconnect (LVD) is included at the input stage to protect the potential battery at the input from being deeply discharged.
Galvanic isolation between input and output. There are four leds in the front panel which indicate the load level.
The DC Transformers are protected against input low/high voltage, output over-voltage, over temperature and output overload or shorting (short circuit). Each unit is Hot-Swap, 3 units in a 1U, 19″ shelf (total 1,800W per shelf).
Input Single Dc-Dc 48-24 Module
Voltage range 42÷ 61.5VDC
Current 17A (max)
Protection Against reserve polarity connection
Low Voltage Protection Stops at Vin < 42VDC
Restart operation Automatic at Vin > 46VDC
Current limit 25A (folds back to 9A at shortcircuit)
Voltage adjustment ±5%
Voltage regulation ±1%
Protection Over load, output OVP, Over-temperature
Display 4 LED bar-graph display the load level
Parallel operation Active current-sharing
Ambient temperature -10÷50°C
Humidity 0-95 %
146 (W); 44 (H); 260 (D)
Withstand voltage Input – Output: 1500VDC
Input – chassis: 1500VDC
Output – chassis: 1500VDC
Cooling Forced, fan speed control
Safety IEC950, EN60950
EMC EN55022, EN6100-4-2
Telecom Rectifier Uninterrupted Power Supply (UPS)
Telecom rectifier power supplies are dc power supplies. They supply power during normal operation and are backed-up with uninterrupted power supplies (UPS) during power failure. The name rectifier comes from the fact that the units are powered by ac voltage and convert that ac voltage to dc voltage for the loads.
Telecom rectifier UPS sub-systems are a specialized class of products which adhere to specific telecom standards. These standards were once considered stricter and represented a higher level of quality and reliability requirements than computing standards. Although computer and networking reliability and quality standards are not as codified as telecom standards, today’s mission critical electronic equipment for computing and networking is designed and manufactured to standards which are as high as those in the telecom sector.
In the power supply and backup supply fields, the same high quality standards hold for telecom, computing and networking systems. Gamatronic prides itself on adhering to the highest design and manufacturing standards for all of its products. The company also uses specific domain know-how from related fields to give its telecom products features above and beyond industry standards.
Carrier Class Reliability Standard
In telecommunication, Carrier Class Reliability is a measure of system resilience to failure. Systems are designed to stay up regardless of internal or external failures. Power failure, an external factor, is handled by redundant power systems (UPSs). These systems provide backup power to standard telecommunication rectifier power supplies and therefore are called telecom rectifier UPSs. A key factor in keeping telecommunication system operational is reliable power supply design.
In telecommunication, carrier class is the name of the standard for the highest level of reliability and availability. The standard calls for 99.999% availability. This standard, also called “five nines”, is a system availability target. Such a high reliability target can only be attained through the use of rectifier UPS sub-systems, continuous system monitoring, and program of regular preventive maintenance. Telecom rectifier UPS systems are used in a wide range of applications to achieve carrier class reliability. In applications where carrier class reliability is not required, UPS systems are still useful in assuring overall system reliability and superior operational reliability.
Standard UPS Power Supplies
Telecom equipment power supplies are standardized to 24 and 48 volts dc. There are also design and operational standards which assure uniform operation. These architecture standards enable UPS manufacturers to design power backup systems which can be easily integrated with any telecom application.
Telecom systems have a wide range of uses. Some common telecommunication applications for UPS sub-systems are:
- Telephone exchanges
- Mobile telephone stations
- Satellite base-stations
- Microwave links
- Rural telecommunications
- Railway switching controls
- Transmission and ISDN equipment
- Power plants
- Airports, hospitals, banks
Telecom rectifier UPSs are used to satisfy a wide range of specific needs, each with its own requirements for power capacity, sub-system size, and cost. This wide range of needs is reflected in the many different sizes of rectifier UPS models on the market, from small units in 1U packages, all the way up to multi-rack systems. While the power capacity of different units varies with design, operational specifications are uniform.
As with related UPS designs, telecom rectifier UPS use covers a wide range of capability. In large telecom installations, UPS deployment scales to large numbers of units. This need to use multiple UPS systems together requires advanced control and maintenance features. Gamatronic’s products, using advanced integration and control features from computing and networking, provides these capabilities in its telecom products.
Gamatronic Telecom Rectifier Products
Gamatronic offers a range of telecom products designed to international standards, from dc-dc converters to dc-ac inverters to complete rectifier UPS systems. Telecom rectifier sub-systems also include integrated packages with two or three rectifier UPS units and controllers in one box. These units offer advanced features to satisfy a wide range of requirements.
Gamatronic products are designed and manufactured to the highest standards and can be found in mission-critical installations around the globe. The systems share state-of-the-art technologies from control and interface features (i.e. USB, TCP/IP) to operational features, covering test, maintenance and operational needs. Because of our experience with a wide range of UPS products, our telecom rectifier products incorporate features designed in related computing and networking sectors, giving the telecom operator above-standard capabilities.
Telecom rectifier systems are designed, manufactured and maintained to high operational standards. These particularly specify system up-time. The specification of system up-time can be measured in the form of MTBF (Mean Time Between Failure), which is essentially a measure of how often a system fails. This number comes in the form of days or years (time). UPS power system reliability is sometimes specified in terms of availability. This measure gives the reliability of the system in percentage. One common standard, called carrier grade, gives an availability measure of 99.999%. This number in the industry is referred to as “five nines”.
Gamatronic is the leading company in Israel for UPS products. The company’s UPS systems are known for their outstanding quality and they provide uninterruptible power supply to defense industries, IT centers, hospitals and companies all over the world. Gamatronic specializes in modular ups and is also known for its military UPS and marine UPS. Gamatronic offers a wide range of uninterruptible power supply systems including online double conversion UPS and three phase UPS. Gamatronic's efficient uninterrupted power supply solutions will guarantee your peace of mind!