DuraComm RU2-1524-UPS User manual
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RU2$1524$UPS*
Rack*Mount*Uninterruptible*Power*Supply*
Owners*Guide*
(These instructions are intended for use by a technician familiar with electronic products)
•Commercial!grade!24!volt!power!supply!with!built8in!
batteries
•Seamless!transfer!to!batteries!during!AC!power!failure
•Built8in!low!voltage!disconnect!(LVD)!to!prevent!equipment!
damage
•Automatically!recharges!batteries!once!AC!power!is!
restored
•Separate!front!panel!indicators!for!DC!output!and!AC!failure
•Power!factor!correction!(PFC)!for!“green”!operation
•AC!fail!alarm!contacts
•3!year!warranty
!
DESCRIPTION
RU2-1524-UPS is a rack mount continuous duty uninterruptible power supply with self contained battery, charger, AC fail
circuit, and low voltage disconnect.
SPECIFICATIONS
Output Voltage........................................................................................................................................................................ 27.5 VDC
Output Voltage Tolerance.......................................................................................................................................................... +/-1 pct
Output Amperage ........................................................................................................................................................... 15 Amps cont.
Maximum Power, continuous ..................................................................................................................................................500 watts
Output Voltage Adjustment................................................................................................................................................... 23-28 VDC
Maximum ripple and noise............................................................................................................................................100 mV p-p max
Auto Ranging AC Input ....................................................................................................................................................... 85-264 VAC
Input frequency range.............................................................................................................................................................. 47-63 Hz
Maximum AC current..................................................................................................................7 Amps/120 VAC; 3.5 Amps/240 VAC
Typical Efficiency........................................................................................................................................................................ >80 pct
Max inrush current, single cycle ...............................................................................................................................................35 Amps
Short Circuit protection ............................................................................................................................................... Foldback Limiting
Overload Protection (operates) ................................................................................................................................typical 110-120 pct
Line Regulation.............................................................................................................................................................................50 mV
Load Regulation ............................................................................................................................................ 100 mV (20-100 pct load)
Fan Control.................................................................................................................................... Heat sink temp >140 F (60 C) = ON
Over Temperature ........................................................................................................................ >195 F (90 C) auto output shutdown
Rise Time following ON ................................................................................................................................................................50 mS
Hold Time following OFF ..............................................................................................................................................................10 mS
Working Temperature range............................................................................................................................. -4 –140 F (-20 -+ 60 C)
Storage Temperature ..................................................................................................................................... -40 –185 F (-40 -+85 C)
Withstand Voltage* ................................................................................................................. 1.5 KV @ 10 ma (I/P-O/P, I/P-FG)/1 min
(Continued) ............................................................................................................................. 500 V @ 10 ma (O/P-FG)/1 min
Dimensions......................................................................................................................................3.5H x 19W x 13D inches, nominal
Weight ............................................................................................................................................................................20 lbs, nominal
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BATTERY BACK UP & CHARGER
Maximum Power, continuous .................................................................................................................................................500 Watts
Auto-revert to battery or power supply ..................................................................Provided by dual Shottky diode in OR configuration
Maximum output current in battery mode ....................................................................................30 amps (limited by 30 Amp Breaker)
Maximum charge voltage ....................................................................................................................................................... 27.5 VDC
Maximum recharge rate............................................................................................................................................1 Amp float charge
Battery protection ............................................................................................. 15 Amp Breaker Overload/Reverse Polarity protection
L.E.D. indication ............................................. Red = AC or Power Module Fail, System operating on Battery. Green=DC output OK
LOW VOLTAGE DISCONNECT with RELAY
Maximum interrupt current / continuous current .................................................................................................................15 Amps DC
Disconnect voltage .................................................................................................................................................................21.5 VDC
Reconnect voltage..................................................................................................................................................................... 25 VDC
Disconnect delay .......................................................................................................2 minutes @ less than preset disconnect voltage
BATTERY
Power Sonic PS-6100 or equivalent ........................................................................................................................................................ x 2
Nominal Voltage ............................................................................................................................................................................ 24.0 VDC
Battery Capacity ................................................................................................................................................................................12.0 Ah
Operating Temperature .................................................................Charger: -4~+122 F(-20~+50C) … Discharge: -40~+140 F (-40~+60C)
AC FAIL CIRCUIT
•Red LED indication on front panel.
•Relay contacts for AC fail “Normally open” or “Normally closed”.
GENERAL APPLICATION NOTES AND WARNINGS
WARNING: THERE ARE NO USER SERVICEABLE PARTS INSIDE. HAZARDOUS VOLTAGES EXIST INSIDE THE UNIT.
SERVICE AND REPAIR MUST BE REFERRED TO QUALIFIED FACTORY PERSONNEL.
NOTE: The individual user should take care to determine, prior to use or installation, whether this device is suitable, adequate or safe
for the use intended. Since individual applications are subject to great variation, DuraComm makes no representation or warranty as to
the merchantability, suitability or fitness of these units for any specific application.
NOTE: The precision regulated power supplies operate internally from voltages in excess of 12/24/48 volts. In rare cases, voltage
spikes or transients on the AC power line, or over heating, may cause a component failure in the power supply. Overloading the output
will cause the over current feature to operate. In either case, the cause must be determined and corrected. Failures require
investigation as to cause and/or repair of the unit.
INSTALLER NOTES
NOTE: The outputs are NOT referenced to the chassis. The Modular System can be used either positive or negative ground.
NOTE: DO NOT block any of the cooling vents on the sides or top and always allow adequate ventilation by not installing the unit
inside tightly closed spaces. Physical mounting position is not critical but the cooling vents and the internal thermostatically controlled
cooling fans must not be blocked.
WARNING: Be certain to locate the battery in a well ventilated area. During recharging, small amounts of hydrogen gas may be
produced. Hydrogen gas is highly flammable and under the right conditions, explosive.
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RU2-1524-UPS Wiring Layout
This system setup will provide continuous power to the load and maintain battery bank with smart charger while AC power is on. There
is a seamless transfer of the load to the battery when the AC power goes off. The LVD will disconnect the battery if the voltage drops
below 21.5 VDC. The battery reconnects once AC power is restored and voltage reaches 25.0 VDC.
CONDUCTOR PRETREATMENT
All kinds of copper conductors can be clamped without treatment. DO NOT solder tin stranded conductors. The solder yields and
fractures under high pressure. The result is increased contact resistance and excessive temperature rise. Additionally, corrosion has
been observed due to the fluxes. Notch fractures at the transition from the rigid tinned part to the flexible conductors are also possible.
Ferrules can be used as a protection when wiring stranded conductors. Copper ferrules prevent the current transfer from being
influenced by dissimilar metals and remove the risk of corrosion. Always use the correct tool to crimp the ferrule.
RECOMMENDED COPPER WIRE SIZE FOR CURRENT CAPACITY
(Insulated Wire, Single Conductor in free air)
Current Level in Amperes
<7 AMPERES
Wire Size
20 AWG Up to 5 feet
18 AWG Up to 10 feet
14 AMPERES
18 AWG Up to 5 feet
16 AWG Up to 10 feet
20 AMPERES
16 AWG Up to 5 feet
14 AWG Up to 10 feet
30 AMPERES
14 AWG Up to 5 feet
12 AWG Up to 10 feet
40 AMPERES
12 AWG Up to 5 feet
10 AWG Up to 10 feet
50 AMPERES
10 AWG Up to 5 feet
8 AWG Up to 10 feet
70 AMPERES
8 AWG Up to 5 feet
6 AWG Up to 10 feet
100 AMPERES
6 AWG Up to 5 feet
4 AWG Up to 10 feet
RU2-1524-UPS
Load
NO COM
NC
AC Fail
NO=Normally Open
NC=Normally
Closed
COM=Common
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LIMITED WARRANTY
DuraComm warrants to the initial end user, each power supply manufactured by DuraComm to be free from defects in
material and workmanship, when in normal use and service for a period of three year from the date of purchase, from an
authorized DuraComm dealer.
Should a product manufactured by DuraComm fail or malfunction due to manufacturing defect, or faulty component,
DuraComm, at its option, will repair or replace the faulty product or parts thereof, which, after examination by
DuraComm, prove to be defective or not operational according to specifications in effect at the time of sale to the initial
end user. The product that is replaced or repaired under the provisions of this warranty, will be warranted for the
remainder of the original warranty period, only, and will not extend into a new three year warranty period.
The limited warranty does not extend to any DuraComm product which has been subject to misuse, accidental damage,
neglect, incorrect wiring not associated with manufacture, improper charging voltages, or any product which has had the
serial number removed, altered, defaced, or changed in any way.
DuraComm reserves the right to change, alter, or improve the specifications of its products at any time, and by so doing,
incurs no obligation to install or retrofit any such changes or improvements in or on products manufactured prior to
inclusion of such changes.
DuraComm requires any product needing in or out of warranty service to be returned to DuraComm. All requests for
warranty service must be accompanied by proof of purchase, such as bill of sale with purchase date identified. DuraComm
is not responsible for any expenses or payments incurred for the removal of the product from its place of use,
transportation or shipping expenses to the place of repair, or return expenses of a repaired or replacement product to its
place of use.
The implied warranties which the law imposes on the sale of this product are expressly LIMITED, in duration, to the three
(3) year time period specified herein. DuraComm will not be liable for damages, consequential or otherwise, resulting from
the use and operation of this product, or from the breach of this LIMITED WARRANTY.
Some states do not allow limitations on the duration of the implied warranty or exclusions or limitations of incidental or
consequential damages, so said limitations or exclusions may not apply to you. This warranty gives you specific legal
rights which vary from state to state.
This warranty is given in lieu of all other warranties, whether expressed, implied, or by law. All other warranties,
including WITHOUT LIMITATION, warranties of merchantability and fitness or suitability for a particular purpose, are
specifically excluded. DuraComm reserves the right to change or modify its warranty and service programs without prior
notice.
DuraComm® Corporation
6655 Troost Avenue
Kansas City, MO 64131
Phone (816) 472-5544 Fax (816) 472-0959
www.duracomm.com
Version 0429-14
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