Undervoltage Solutions


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Blackout Protection
up to 15 Minutes

Bonitron Battery UPD (Uninterruptible Power for Drives) Systems are the economical method of providing DC bus back-up power for up to 15 minutes and are ideal for dark starts where no initial power is available or to hold up processes until there's time for generators to start.

Bonitron Battery UPD Solutions can be purchased with batteries, or batteries can be sourced locally to reduce shipping costs.

  • Battery energy storage for long durations
  • Provides full-load power for up to 15 minutes for 100%, 3-phase outages
    • Contact Bonitron for available longer durations
  • Ideal for dark starts or to maintain process before generator starts


Bonitron UPD Advantages   In-line UPS Disadvantages

Bonitron UPD Systems power the DC bus of the drive via DC bus connection on the drive. This eliminates an unnecessary and energy wasting DC to AC conversion.

  • Parallel Connection
    • High reliability
    • Seamless power source transfer
  • Increased Efficiency
    • Ultra-low standby power
    • Sized to drive system for reduced cost
    • Power supplied to DC bus for minimal conversions

Double conversion UPS systems convert DC voltage that is stored in batteries or capacitors back to AC voltage in order to power the drive, which in turn converts it back to DC. Variable frequency drives are not recommended for use with UPS systems, as the drive input reactance interacts negatively with UPS systems.

  • Series Connection
    • Decreased reliability
  • Decreased Efficiency
    • Unneccesary conversions
    • Converts energy storage back to AC

Up to 60 Second Outage
Up to 40A

Up to 15-Minute Outage
Up to 610A


When full outage protection for up to 15 minutes is needed, the S3534BR or S3460BR is the ideal solution. The Battery UPD System stores energy in battery banks and releases it onto the drive’s DC bus when needed. This allows the drive to "RideThru" power sag or outage events and maintain motor speed and torque.

Product Highlights

  • 208 - 480VAC
  • Up to 15-Minute outage protection
  • "A UPS for Drives"
    • More efficient and reliable than traditional in-line UPS systems
  • Ideal solution to keep drive-driven process online until generators start up
  • Seamless power transfer from utility to Bonitron

System Components

  • Voltage Regulator
  • Charger
  • Batteries (Supplied or acquired locally)
  • Cabinet
  • Interactive Digital Display
    • Monitors and stores history of power quality issues, including status, voltage, and current.
    • Standard on BR Series
  Made in the United States of America

Contact Bonitron

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