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These are interchangeable terms used in the industry to describe a power supply that produces an AC (alternating current), voltage output, as opposed to a DC (direct current), voltage output. The AC power supply is produced in two different topologies,switching and linear.
The term Frequency Converter is interchangeable with AC Power Source and
AC Power Supply. Frequency Converter describes a black box that will
accept one form of AC voltage input at a certain frequency and will
convert that input to a desired AC voltage and frequency at the output.
You can change voltage with a transformer or variac, but to change frequency you need a frequency converter (AC power source).
Passport (P series):1350 VA and 2000 VA at a great price and performance. Dual output range; 0-135 VAC& 0-270VAC switch selectable, fixed frequency outputs at 50Hz, 60Hz and 400 Hz or adjustable from 45 through 500 Hz with 1,000 Hz optional. 120 VAC input or 230 VAC input models available. Many options are available including remote control and extended frequency. The P Series is ideal for production test, ATE, avionic test and frequency conversion.
BL1350 series:1350 VA with many standard features included in the base model, analog remote control, stackable for higher power or three phase and external sync. Input voltage can be: single phase (115 or 115/230), Power Factor Corrected or 3 phase. Dual range output; 0-135 VAC & 0-270 VAC switch selectable, output frequency adjustable from 45 through 500Hz with 1,000Hz optional. Additional options include RS232 or IEEE-488 remote control, Motor Test and CE Mark. Other non-standard outputs voltages are available. The BL1350 Series is ideal for production test, ATE, avionic test and frequency conversion. In addition the BL1350 series is easily modifiable to meet your requirements
BL High-Power Series: available from 1,000 to 20,000 VA, single and three-phase inputs and outputs available. The BL High-Power series includes all of the standard and optional features of the BL1350 series. The BL High-Power series is ideally suited for production test, avionic test, frequency conversion, ATE, bulk power and motor generator replacement. In addition the BL High Power series is easily tailored to meet your requirements.
BL+ Series:30 KVA , 60 KVA and 120 KVA models use multi-pulse input transformers for low input current distortion. Single and three-phase outputs with a choice of many standard input voltages are available. BL+ Series output frequencies available fixed at 50, 60 or 400Hz or adjustable from 45-500 Hz with available frequency options. Other options include programmable controller, remote control using analog, RS232, IEEE-488 or Ethernet.
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UPS's are available in a number of topologies from Standby (Off-Line) to Line Interactive to True On-Line.
True On-Line UPS uses double-conversion topology to produce a clean, regulated, AC sine wave with "zero" time switch-over to the inverter/batteries in the event of loss of AC input. 'Double conversion' means that the UPS rectifies and converts the AC input power to DC and then the DC power is 'inverted' creating a clean AC power signal. If the AC input power is lost, the DC to the inverter is seamlessly supplied by the batteries instead of the rectified AC product. This is because the inverter is always "On-Line" supplying 100% of the load. As a result, there is no switching time or gap in the power as there is when using the other topologies. In addition, the True On-Line UPS offers protection from all the common utility power issues; sags, surges, noise, frequency changes, high/low voltage, blackouts, lightning and harmonics.
Behlman offers True On-Line UPS's and can configure the UPS's with a variety of options including PFC (Power Factor Correction) input, input and output isolation, frequency conversion, external battery packs for additional hold up time, high temperature batteries, custom connectors, slides and custom enclosures and packaging.
Contact the factory to discuss your requirements.
An inverter is a power device that transforms DC (Direct Current) into AC (Alternating Current). A typical application would be to convert
your available battery or DC power to AC to power sensitive electronic
devices that require clean, low distortion sine wave inputs (i.e. microprocessor based instruments and PLC's).
ACDC-1200: Dual input Inverter:
The Behlman ACDC-1200 is a 'True On-line' inverter that accepts two independent input sources, one AC and one DC, and also may be utilized as a UPS. The inverter can be configured with either the DC input or AC input
as the preferred/primary source. If the preferred input is lost, the
ACDC-1200 will automatically switch to the secondary source, in zero
time, to continue to supply power without a loss of output or surge
in power. In addition the unit allows for a wide range of either the
AC or DC inputs and it will provide isolation from the sags, surges
and disturbances of utility power. The ACDC-1200 is the same as a 'True
On-line UPS' except that it uses your batteries (instead of it's own
INV-1200: 1200 VA, 120 VAC @ 60 Hz output. 48, 125, or 250 VDC input. Rack Mount.
Modified Sine Wave Inverters
INV-1210: 1200 VA, 120 VAV @ 60 Hz output. 48, or 125 VDC input. Rack mount.
The INV series can be configured with an "AC Bypass" Option that will route an external AC voltage to the output of the inverter. This option includes alarm contact closures and LED indicators. This is useful in the event of loss of input to the inverter due to battery failure.
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Behlman specializes in tailoring and modification of standard products to produce devices specifically configured to customers requirements. They may be as simple as having special connectors for input and output or, extremely complex such as a completely redesigned and/or repackaged frequency converter or UPS.
Please contact us with your specific requirements.
US Military organizations, in an effort to reduce cost, are encouraged to seek out reliable, commercial products for use on their programs and projects. The acceptable products usually are modifications to standard products (MCOTS) that are built and tested to verify compliance to the
stringent requirements of military products. The Assistant Secretary
to the Navy has released a document NAVSO P 3641A, titled " More Power for the Dollar", which outlines the design parameters
and the total cost of ownership and highlights the benefits of Modified
COTS power supplies like those manufactured by Behlman.
Behlman VPXtra™ Power Supplies increase the power available for OpenVPX™ applications.
Behlman Electronics Inc., known for its leadership in power products for military, industrial, and commercial applications, has developed a new engineering standard, VPXtra, that supports the design, manufacture, operation and cooling of high-density 6U OpenVPX compliant COTS DC-DC power supplies and a COTS AC-DC front end module. All units are OpenVPX Vita 62 compliant, with a wide input range and typical efficiency of 90%.
A large number of railroad transit systems (people movers) use AC signaling as a means of tracking the train and sending information to the conductor. Unlike the traditional application for AC power supplies/ frequency converters used in test applications, Behlman railroad signal sources
(RR series) are installed in a trackside hut called a 'bungalow' or
'signal house' and are powered 24/7. Powered from either AC or DC, the
Behlman RR Series Frequency Converters, produce an AC output calibrated
to a required signaling frequency (i.e. 25 Hz, 91.67 Hz, 100 Hz, or
250 Hz). The RR Series incorporates special circuitry for: input/output
protection & isolation, short circuit protection with Auto-Reset, alarms and contact closures; plus rugged construction for the needs and rigor
of the RR environment. In addition to the above special features, Behlman has developed specific solutions for RR applications that include: dual
inputs, high power single phase input, high power single phase output,
redundant units (with transfer modules that automatically switch from
one signal source to the redundant one in the event of loss of the primary source).
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