LP-1

1A Linear Power Supply Charger Module

6/12/24 VDC Selectable

The LP-1 becomes an uninterruptable power supply when used with a transformer and stand by battery. The output of the LP-1 is a clean smooth continuous DC power which can be used to power the most sensitive electronic controls.

The LP-1 output and battery charge voltage is selected by moving the programming jumper to 6V, 12V or 24V. The voltage selected is factory preset to precisely charge a Sealed, flooded, or Gel Type Lead Acid Battery(s).

The current that the battery draws from the LP-1 is determined by the battery's condition, capacity, temperature and state of charge. The LP-1 is protected against shorts and overloading with its electronic circuitry and battery fuse. This same circuitry also protects the transformer. When the DC load requires more than the maximum output provided by the LP-1, the battery can add up to 4 moreAs.

This may be necessary to sound a high powered siren for the duration of an alarm. The LP-1 has a replaceable 4A battery fuse or optional automatic resetting 2A circuit breaker.

For calculating standby current, recharge times, and available current, refer to the tables and the specifications on the backside of this bulletin.

To test the battery and fuse: It is recommended that on a regular basis, the output should be checked for proper voltage and current while the AC power is removed.

  • LP-1: 6/12/24 VDC Selectable at 1A Linear Power Supply Charger module

Features

  • Selectable Output & Battery Charging 6/12/24 VDC
  • 1A Continuous Supply Current
  • Battery Charge Rate is Electronically Temperature Compensated
  • Clean Linear Output Electronically Protected against Over Current and Temperature
  • Fused Battery Protection with optional Auto Re-setting Circuit Breaker
  • Precise Output Regulation for Battery Charging
  • 12" Battery Leads with Protected Plug and Jack
  • Surge Protected
  • Self-Clamping Terminal Screws

Specifications

  • Output DC Voltages are optimized for Sealed Lead Acid or Gel Type Battery Charging.
  • Caution: Select your output voltage before connecting AC.
  • 6V Selection ................................. 6.70 VDC
  • 12V Selection ................................ 13.65 VDC
  • 24V Selection ................................ 27.30 VDC
  • Output Current Note: If you are using a standby battery, subtract at least 150ma from your continuous current for charging the battery. This allows up to 850ma of continuous current for your output load. See transformer selection table below.
  • Maximum Output Current of Supply ...................... 1.5A
  • Thermal Shutdown ................................... 82C
  • Humidity .......................... 95% RH Non Condensing
  • Ts Storage Temperature .................... -40oC – 85oC
  • Ot Operating Temperature Range 100% rating:
    • Ot Power module only ................... -20 – 40oC
    • Ot with E-89 Enclosure on wall ......... -20 – 30oC
    • Each 3% load reduction increases Ot by ....... +1oC
  • Intermittent Current with Battery ................ 5.5As
  • Maximum Battery Current with 3AGC 4A Standard Fuse .. 4As
  • Maximum Battery Current with Optional Auto Resetting Circuit
  • Breaker ............................................ 2As
  • Typical Regulation from No Load to Full Rated Current . .05%
  • Typical Ripple and Noise @ Full Load ................ 50mv
  • Voltage Change after 1 year of Continuous Operation
  • (Long Term Stability) ............................ .02 VDC
  • Center-to-Center Terminal Block Spacing withSelf Clamping Screws .............................. .375”
  • Module Size ......................... 3.06”H x 2.43”W x 2”D
  • Module mounting holes C-to-C ...... 2 1/16”W x 2 5/8”H
  • Small Enclosure size .................. 8”W x 9”H x 3.5”D
  • RoHs Lead Free
  • Input AC Transformer Selection Table:
  • Transformer min. VA Selected DC Output Voltage Continuous Current
  • 12 VAC at 20VA 6 VDC 1A
  • 16 VAC at 20VA 12 VDC 1A
  • 25-28 VAC at 40VA 24 VDC 1A
  • 24 VAC at 40VA 6 VDC .20A
  • 24 VAC at 40VA 12 VDC .25A
  • 24 VAC at 40VA 24 VDC .60A