In this latest version, we've increased the hold-over time (time
that the unit will operate without power) to over 2 seconds.
We've added a power-save feature to the LCD and improved
operation in brown-out conditions. It's still just as easy
to use. There are no user settings. Just plug it in
and let the microprocessor do the work.
Switching from a failed input typically occurs in about 9ms.
The exact switching time is determined by the nature of the
input failure (ie. complete failure or brownout), but it won't
exceed 15ms. There are also lockout and qualification
times to prevent oscillation.
complete specifications here.
Can you develop custom firmware for my application?
Gladly. We've done this for many customers. Our programming rate is $75/hour.
After we agree on a -very specific- project description, we can send you an estimate of the time
involved to code, debug and test.
What are the RS-232 port settings?
The serial port is a
DTE port, output only, for status monitoring. It operates
at 9600 baud, N, 8, 1.
Can you develop custom hardware for my application?
Gladly. We've done this for many customers. For larger
orders (500+ units), we may be able to amortize the R&D expense.
What are the current and voltage ratings?
The output current rating is conservatively set at 12A. To improve
long-term reliability, 20-30A components are used internally..
Devices such as servers which have redundant power supplies should
have one cord connected to the output of the failover switch,
and the other to the most reliable outside source of power (other
than the primary input). Devices without redundant
inputs should connect to the output of the failover switch.
Place the UPS in series with the primary input cord to the failover
switch. In other words, connect the UPS between the primary
cord and outside power. If you are using a generator with a
generator transfer switch as backup, connect the generator or
transfer switch output to the secondary input. Devices
such as servers which have redundant power supplies should have
one cord connected to the output of the transfer switch, and the
other to the most reliable outside source of power (other than the
If we haven't answered your questions here, please call (408) 330-5599 or
We'll be glad to help.