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Alpha Technologies Inc.
Phone: 360 647 2360
Email: alpha@alpha.com
ProductsCable / BroadbandOutside Plant PowerBatteriesAlphaGuard™AlphaGuard™
AlphaGuard
AlphaGuard™

Did you know maintaining a tight tolerance of ±.1V on individual battery voltages provides increased battery string life?

  • Maximizes battery life
  • Replace single batteries, not the entire string
  • Reduces battery preventative maintenance
  • Spreads charge voltage equally across batteries
  • Compensates for battery differences as they age
  • Safe unattended operation designed to CSA C22.2 No. 107.1 and UL 1778 standards
  • Optional Potted AlphaGuard for underground battery vault applications


AlphaGuard monitors and protects your batteries by spreading the charge voltage equally across all the batteries in the string, ensuring that every battery, whether old or new, is properly charged. With an ideal voltage across each battery, life and runtime are optimized. Individual batteries in a string can be replaced as they fail, allowing good batteries to be left in service longer. This stops the wasteful and costly practice of replacing complete battery strings based on a single battery failure.

Case Study

846 battery strings totalling 2538 batteries in outside plant installations
  • After two years 928 batteries drift outside acceptable charging tolerance presenting a challenge during preventative maintenance visits.
  • At risk- 345 strings totaling 1035 batteries x $135 = $155,250
  • AlphaGuard investment 846 strings x $84 = $71,064
  • AlphaGuard reclaims lost potential of life for 928 strings
AlphaGuard
Voltage Drift by Years of Battery Life Lost
AlphaGuard Battery Management System
Voltage Drift by Number of Batteries
AlphaGuard Battery Management System
AlphaGuard
Models
AG-CMT-3:AlphaGuard Charge Management SC, 36V - including 36Vdc battery string interface cable
AG-CMT-4:AlphaGuard Charge Management SC, 48V - including 48Vdc battery string interface cable
Configuration
Quantity:One (1) AlphaGuard is required per battery string
Service Location:With the battery string
Mechanical Specifications
Housing Material:High impact plastic
Dimensions H x W x D (in/mm):1.4 x 4.8 x 4.3 / 36 x 122 x 108
Weight (lb/kg):0.8/.36
Electrical Specifications
Batteries:Individual 12Vdc nominal batteries configured into 36 or 48Vdc strings
Circuit Protection:Fast blow fuse, reverse polarity protected
Quiescent Current Draw:1mA max. (Current consumed by AlphaGuard after low voltage total shutdown)
Charge Management:Most effective during float period of charge
Max. Current:2A @ 25°C / 77°F
Quality of Final Balance:±100mV max. between any two (2) batteries
Charging Efficiency:80 to 90%
Charge Balance:±100mV typical
Low Voltage Cutoff:34.5Vdc/46Vdc ±5%
Communication to XM2:AG-DSM cable supplies battery readings to a DSM status monitoring card
Voltage Sense Regulation:±100mV
Environmental Specifications
Operating Temperature:-40 to 55°C / -40 to 131°F
Humidity:5 to 95% non-condensing
Warranty
Warranty:5 years
Cable Options
AG-DSM-S9-Cable AG-DSM-D9-Cable AG-DSM-D35-Cable
AG-DSM-S9-Cable AG-DSM-D9-Cable AG-DSM-D35-Cable
AG-DSM-S35-Cable Battery Cable 36V 6ft Battery Cable 48V 6ft
AG-DSM-S35-Cable Battery Cable 36V 6ft Battery Cable 48V 6ft
Document Downloads
Title Type Version Date
AlphaGuard Datasheet_English (A4) Datasheet 049-225-11-004 August 10, 2007
AlphaGuard AG/CMT Installation Instructions Manual 012-306-C0-005 Rev. E March 5, 2008
AlphaGuard Datasheet_English (LTR) Datasheet 049-225-10-007 August 10, 2007