top banner
   DLS-UI-27-40 CONVERTER / CHARGER Specification Sheet in PDF format Installation Manual in PDF format Warranty Information
DLS-UI-27-40 Power Factor Corrected Power Converter
  108-264 VAC

  47-63 Hz

  27.2 VDC

  40 Amps

  Operation of 24VDC systems and accessories

The DLS-UI-27-40 Power Converter/Battery Charger from IOTA converts 120-240 AC voltage to 27.2 DC voltage.

As a power supply, tightly controlled regulation allows the user to operate any 24VDC nominal load up to the unit's rated output current.

As a battery charger, the unit will maintain the battery, delivering full-rated current when the battery capacity falls sufficiently low. The voltage is set to deliver maximum current for the necessary period of time that minimizes undue stress to the battery caused by heating of its cells. This helps to ensure the longest possible life of the battery. Over time, as the battery nears full capacity, the DLS-UI-27-40 will automatically drop the current, providing a float-charge to the battery to prevent self-discharge of the cells.

The unit features a Power-Factor Correction (PFC) design, providing efficient utility consumption and allows operation of the unit from a standard 15A circuit.

Model Features DLS-UI-27-40
The DLS-UI-27-40 provides AC/DC conversion up to 40 amps and features a Dual Voltage Jack, allowing the user to manually select between a normal 27.2V charge or a stepped-up charge for faster charging.

The DLS-UI-27-40/IQ4 features an internal IQ4 Smart Charge Controller which automatically provides four-stage battery charging for safer charging and longer life for your system's battery.

  • Power Factor Correction provides efficient utility consumption
    and allows operation from a 15A circuit.

  • Universal Input accepts AC voltage from 120 to 240 VAC

  • Clean and Steady DC output operates your loads the way they were
    intended, avoiding potential damage to systems from errant DC voltage

  • Built-in Protection Features guard the unit against erratic
    line voltage that can occur from shore power or generator supplies

  • Reverse Polarity Protection to protect against damage
    from incorrect battery hook-up, using readily available
    fuse types that are easy to replace

  • Proportional Fan Control for whisper-quiet operation

    Additional Features Include...

  • Switch-mode technology

  • Current limit and thermal/overload protection

  • Lower operating temperature

  • Charging Jack option for normal and high-stage battery charging applications

  • IEC Input Plug allows connection to all global connection types

  • Compatible with the IOTA IQ4 Charge Controller

DC Output Voltage (No Load) approx. 27.2V (DC)
Output Voltage Tolerance (No Load) + or - .5%
Output Amperage, Max Continuous 40 Amps
Output Voltage (Full Load) approx. >27.0V (DC)
Maximum Power Output, Continuous 1100 Watts
Ripple and Noise <100 mV rms
Input Voltage Range 108-264V (AC)
Input Voltage Frequency 47-63
Maximum AC Current @ 120VAC 11.5 Amps
Power Factor (@ Full Load) >90%
Typical Efficiency 80%
Max Inrush Current, Single Cycle 75 Amps
Short Circuit Protection Yes
Overload Protection >100%
Line Regulation 100 mV rms
Load Regulation <1%
Fan Control Proportional
Thermal Protection YES
Working Temperature Range 0°- 40°C
Storage Temperature -20° to 80°C
Withstand Voltage (VDC)* 1700/1700/500
Dimensions 13" x 8.3" x 3.4"
Weight 9 lbs
Input Cord** IEC C-14

*Primary to Chassis/Primary to Secondary/Secondary to Chassis

**Requires country-specific C-13 cord (not supplied).

Detailed mounting footprint is available in the Technical Library