Electronics Protection - Fall 2015 - (Page 26)
GE's 800-Watt DC-DC Converter Provides
Space-Constrained Power Designers with High
GE's Critical Power business
has introduced its QBVE067A0B
Barracuda-series DC-DC converters, providing up to 800 watts of
12-volt DC output power from
an input voltage range of 40 to
The Barracuda-series QBVE067A0B converters feature an
industry-standard, DOSA-compliant quarter-brick footprint, measuring just 58.4 by 36.8 by 10.7
mm. Previously, two parallel 400 W converters would need to be
installed to facilitate 800 W of power. The need for two modules
to convert the power greatly reduces the amount of space available for other components. With GE's QBVE067A0B converters,
however, the amount of required space is cut in half.
The Barracuda-series DC-DC converters are able to convert
power from a range of input voltages to a low output voltage of
12 volts at a maximum load current of 67 amperes. The output is
fully isolated at 2,250 volts from the input, allowing for versatile
polarity configurations and grounding connections. In addition,
the converters feature built-in filtering for both input and output,
minimizing the need for external filtering.
The module's tightly regulated output voltage makes GE's latest DC-DC converters well suited for installations such as 12-volt
intermediate bus applications where multiple low voltages are
subsequently generated using point-of-load converters. Other
applications include distributed power architectures, servers and
storage applications, supercomputers, automatic test equipment
and networking equipment such as Power over Ethernet and highspeed 5G networks.
The QBVE067A0B DC-DC converters incorporate digital control,
synchronous rectification technology, a fully regulated control
topology and innovative packaging techniques to achieve efficiencies in excess of 96 percent at 12-volt output voltages. This leads
to lower power dissipations, reducing the need for a heat sink in
many applications. However, the units do include a heat plate to
attach an external heat sink or contact a cold wall if needed. Additional standard features include on/off control, output over-current and over-voltage protection, input under- and over-voltage
lockout and over-temperature protection.
Mini Circuit Breakers - UL489 and UL1077 Type
Carlo Gavazzi has launched a range
of Miniature Circuit Breakers for up
to 480Y/277 VAC systems: GMB Series
UL489 MCBs for branch circuit protection and GSB series UL1077 MCBs for
supplementary circuit protection.
The GMB series are UL489, AC miniature molded circuit breakers, which
provide reliable protection for a wide
range of applications including branch
circuit protection of HACR equipment,
power supplies, transformers, motors, receptacles and other
equipment. One, 2 and 3 pole arrangements are available, ranging
from 0.5 A to 63 A, with short circuit interrupt capacity of 10 kA.
The GMB series circuit breakers are UL listed and conform to IEC
Fall 2015 * www.ElectronicsProtectionMagazine.com
The GSB series are UL1077 AC supplementary circuit protectors,
which offer overcurrent protection for specific applications where
branch circuit protection is already provided by another device
or is not required. They are available in 1, 2, 3 and 4-pole variations, ranging from 1 to 63Amps and have a short circuit interrupt
capacity of 5 kA. The GSB series are UL recognized components.
The GMB series UL489 branch circuit protectors and GSB series
UL1077 supplementary protectors are housed in compact 17.5 mm
wide housings (per pole), with robust DIN-rail mounting and red/
green diagnostic trip indicators. C tripping curve is standard, with
B & D tripping curves available upon request.
SL Power Introduces High Efficiency Internal and
External AC/DC Power Supplies
SL Power Electronics
has added the TE60 and
TB65 series product lines
to its power solutions for
test & measurement applications. The 60 watt TE
series external power supply complies with the US
Department of Energy's
level VI efficiency requirements and provides
enhanced performance to meet strict EMI and EMC parameters.
This design makes these external power supplies a solution for use
with handheld test and measurement and industrial devices, where
low noise and rugged performance are required.
In addition to Level VI compliance, equipment designers will
appreciate that the TE Series meets the heavy industrial levels
of EMC per EN61000-4-X, protecting end-use equipment from
harsh electrical environments. Moreover, the TE series designs
utilize high-quality electrolytic capacitors, ensuring greater than
seven-year product life. Low common mode noise, level 4 ESD
protection (IEC61000-4-2: 8 kV/15 kV) and surge protection
(IEC61000-4-5: 1 kV CM/4kV DM) help to ensure the highest overall performance.
The desktop and wall plug models offer regulated output power
with low ripple, no-load power consumption >0.5 W, and short circuit and thermal protection. They include Class B EMI filtering with
a minimum of 6db (conducted) and 3 db (radiated) margin and a
convenient IEC AC 320 C14 grounded input connector that can accept input line cords with any appropriate plug configuration.
For internal power, the TB65 models offer up to 90 percent efficiency and a very compact form factor. The 65-watt TB65 power
supplies are the ideal power solution when very high efficiency
and superior EMI and EMC performance are required. Measuring only 2.0 by 3.5 by 1.3 inches, for use in a 1U chassis, the TB65
provides up to 65 watts of convection-cooled output power.
The TB65 internal power supply is compliant to high levels of
EMC per EN61000-4 and meets Class B conducted EMI with 6db
margin and Class B Radiated EMI with 3db margin. Feature rich
with up to 90 percent efficiency, designers of test equipment will
especially appreciate the TB65's greater than 10-year life, based on
The TB65 models feature a universal input of 90 to 264 Vac and
are available in outputs of 12 V, 15 V, 24 V and 48 V. DC OK Signal
and PSU temperature monitoring signal are standard offerings. All
models are CE marked to low-voltage directive and approved to
ITE standards of CSA/EN/IEC/UL60950-1, 2nd Edition, Am. 2.
Table of Contents for the Digital Edition of Electronics Protection - Fall 2015
Electronics Protection - Fall 2015
Beat the Heat: Six Best Practices for Protecting Your People and Your Business from Arc Flash Hazards
Data Center Design and Cooling for Sensitive Electronics
Electronic Access Solutions - Design Considerations for Your Data Center
An Unsung Hero: the Gas Discharge Tube
Innovation Demands That You Break the Rules
Calendar of Events
Electronics Protection - Fall 2015