Longtime LTCU Series User Manual

LTCU SERIES
USER MANUAL
Thank you for selecting this UPS. It provides
you with better protection for connected
equipments.
Please read this manual!
This manual provides safety, installation and
operation instructions which will guide you to
the best performance of your equipment.
Please save this manual!
It includes important instructions for the safe
usage of the equipment and to obtain
manufacturer's support in case of need.
Please keep or recycle the packaging
materials!
Packaging materials used in our products are
designed to provide protection from
transportation. These materials are necessary
in case that the equipment needs to be
shipped back for service. Damage that may
occur during the shipment is not covered by
the product's warranty.
1. INTRODUCTION
1‐1 System Description
The product is line interactive UPS with LCD
display, newest technology and powerful
function. The line interactive UPS is designed
with 2 steps boost and 1 step buck AVR to
stabilize input voltage. Input voltage range is
‐30%, +25%, but output regulation is +/‐ 10%. The
line interactive UPS provides you with the ability
of perfect protection for your critical devices.
1‐2 Features
Line interactive design.
Microprocessor control guarantees high
reliability.
Frequency 50Hz/60Hz auto sensing.
Equipped with 2 steps boost and 1 step buck
AVR to stabilize Utility voltage.
Built‐in DC start function enable UPS to be
started up without AC power supplied.
UPS green mode (Energy saving function).
Off mode charging.
Modem / phone line surge protection.
Over / low voltage, short circuit, lighting, surge
(option) protection.
2. CAUTION
The UPS contains voltage that is potentially
hazardous. Qualified or certified technician
should proceed all repairs and maintenance.
The UPS has its own internal energy source
(battery). The output receptacles may be active
even when the UPS is not connected to the
Utility.
The UPS is suitable for computers and
electronic equipment with substantial rectifier
or capacitive loads, not suitable for electronic
equipment with significant inductive loads such
as motors and fluorescent lamps.
Be sure to operate within the power rating of
the UPS. Below 1/2 or 1/3 of the rated power is
recommended for longer backup time and
longer battery life.
Do not place the UPS near excessive humidity,
under sunshine or close to heat emitting
sources.
If the UPS is out of order, detach the power
cord and consult your dealer right away. Do not
remove cover, there is no serviceable part
inside.
The unit should be supplied by a grounded
source. Do not operate the unit without a
ground source.
The socket should be installed near the
equipment and be easily accessible.
Do not plug the UPS power cord into itself.
That will result in a safety hazard.
A qualified technician or electrician in
accordance with local electrical code
should perform installation.
3. INSTALLATION
The UPS must be installed in a protected
environment away from heat emitting
appliances such as a radiator or heater. Do
not install this product where excessive
moisture is present.
Caution: Never connect a laser printer or
plotter to the UPS. A laser printer or plotter
periodically draws significantly more power
that its idle status, and may overload the
UPS.
4. OVERVIEW
5. OPERATION
When the UPS is connected to the
Utility, but UPS is not powered on, UPS
will charge battery automatically and
LCD display will show "UPS OFF". Please
press main switch on front panel for 1
second to turn on UPS.
To turn off UPS when UPS is under AC
mode, please press main switch on front
panel for 4 seconds. To turn off UPS
when UPS is under battery mode, press
main switch and then UPS will shut
down completely in 10 seconds.