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
| Item | Specification | ||
|---|---|---|---|
| System configuration | Rectification method | Single-phase full-wave (hybrid bridge method), Three-phase full-wave (pure bridge method) | |
| Cooling method | Natural cooling or forced air cooling | ||
| Rated operation | Continuous | ||
| AC Input | Number of phases | Single-phase 2-wire or three-phase 3-wire | |
| Voltage | Single-phase: 100, 105, 110, 200, 210, 220 V Three-phase: 200, 210, 220, 400, 415, 420, 440 V | ||
| Voltage fluctuation range | ±10% | ||
| Rated frequency | 50 or 60 Hz | ||
| Input power factor | Single-phase: 60% or higher, Three-phase: 70% or higher | ||
| DC Output | Charging method | Float charging method | |
| Rated voltage | 100 V system | ||
| Voltage adjustment range | ±3% or more of rated voltage | ||
| Voltage variation range | Within ±2% | ||
| Output current | Single-phase input | 10、15、20、30、40A | |
| Three-phase input | 10、20、30、40、50、75、100、150A | ||
| Current fluctuation range | 0~100% | ||
| Maximum current droop | 120% or less of rated current | ||
| General Conditions | Ambient temperature | 0~40℃ | |
| Relative humidity | 25–85% (non-condensing) | ||
| Installation location | Indoor 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
