DC Power Supply Systems

DC Power Supply System (for Power Facilities) / Lithium-Ion Battery Equipped Type

DC Power Supply System

Backup power source for critical facilities where power outages are not permitted, including telecommunications facilities, power receiving and distribution equipment for transportation systems, emergency lighting systems in buildings, and water treatment facilities.

Main Applications

  • Emergency lighting systems
  • Power receiving and distribution facilities, etc.

Features

Lightweight and compact compared with lead-acid batteries

  • Achieves a 30% reduction in floor space and 55% reduction in weight compared with Energywith lead-acid battery systems. ※1

Reduced installation footprint through front-access maintenance

  • The battery panel allows access to maintenance components from the front, eliminating the need for rear maintenance space and reducing overall rear space.

Easy replacement of lithium-ion batteries

  • Battery packs are mounted in a 19-inch rack, making replacement easy and enabling rapid response to unexpected troubles.

Monitoring of individual cell voltages

  • Each cell voltage is monitored, enabling detection of abnormalities.

Dropper-less configuration available according to customer requirements

※1 Example of DC power supply system design.

Specifications

ItemSpecification
System configurationRectification methodSingle-phase full-wave (hybrid bridge method), Three-phase full-wave (pure bridge method)
Cooling methodNatural cooling or forced air cooling
Rated operationContinuous
AC InputNumber of phasesSingle-phase 2-wire or three-phase 3-wire
VoltageSingle-phase: 100, 105, 110, 200, 210, 220 V
Three-phase: 200, 210, 220, 400, 415, 420, 440 V
Voltage fluctuation range±10%
Rated frequency50 or 60 Hz
Input power factorSingle-phase: 60% or higher, Three-phase: 70% or higher
DC OutputCharging methodFloat charging method
Rated voltage100 V system
Voltage adjustment range±3% or more of rated voltage
Voltage variation rangeWithin ±2%
Output currentSingle-phase input10、15、20、30、40A
Three-phase input10、20、30、40、50、75、100、150A
Current fluctuation range0~100%
Maximum current droop 120% or less of rated current
General ConditionsAmbient temperature0~40℃
Relative humidity  25–85% (non-condensing)
Installation locationIndoor locations at altitudes of 1,000 m or less, with minimal presence of harmful gases, salt, and dust

Note: Please use the equipment under the environmental conditions specified in the specifications. Failure to do so may shorten service life due to equipment malfunction or component deterioration.

Applicable Standards

  • JIS C 8715-2 (applicable to lithium-ion batteries)
  • Certified battery equipment (Fire Service certification obtained)
  • For battery equipment with a capacity of 4,800 Ah per cell or greater subject to the Fire Prevention Ordinance, compliant cubicles will be used.

DC Power Supply Systems: Applications and Series

Basic Product Knowledge