Original: https://www.ieee802.co.jp/cases/index-en.php
Publisher: Kei Communication Technology Inc. (慧通信技術工業株式会社)
Source： Kei Communication Technology Inc. “ Personal Energy Case Studies | Power BCP, Portable UPS and Off-Grid Systems ”
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Cases / Field Records
What had to remain operational, and why was that architecture selected? These field records show how power BCP, portable UPS and off-grid systems were implemented and operated under real site conditions.
What you can verify
The case studies go beyond product names and specifications. They show which equipment could not be allowed to stop, why the power architecture was selected, and how the system was operated at the site.
To start from an operational need, use the Power BCP portal. For the engineering background, use the technical features. For question-based navigation, use the FAQ.
Published Cases
Review how critical equipment was protected in actual operating environments.
Shinnagata Eye Hospital / Cataract Operating Room
Two HPPHBB0101 portable UPS units were installed on June 22, 2022 to protect the CENTURION Vision System. More than four years later, the system remains supported by a five-year warranty and 24/7 remote monitoring.
Masumikai Social Welfare Corporation / Elderly Care, Day Service and Childcare
A whole-facility energy-multiplexing system combining utility power, two 54 kVA-class LP gas generators, a 980 kg bulk storage tank, smart metering and 24/7 monitoring to maintain three social-welfare services during power and infrastructure outages.
Oriental Bakery Co., Ltd. / Order Center
A Japanese case study showing how a bidirectional-inverter portable UPS and expandable batteries protect the FAX, server and network path required for previous-day orders and next-day production.
Lake Chuzenji / Sightseeing Vessel Nantai
Since 2017, solar off-grid power has supplied 52 passenger outlets, LED lighting and Wi-Fi, allowing the auxiliary generator to remain off while the vessel is berthed.
Nushima Island / Minamiawaji, Hyogo
A field demonstration combining timestamped one-second primary electricity data from 51 locations with dynamic electricity pricing.
Honshu-Shikoku Bridges / Onaruto Bridge
A mobile power system that has operated for twelve years in a harsh marine environment, reducing dependence on fixed trolley-line power infrastructure.
Itsuki Village / Kumamoto
An unattended off-grid architecture designed to keep mountain disaster communications operating through outages and road disruption.
ESCA Co., Ltd.
A localized portable UPS design protecting communications and business systems from failures during power restoration after statutory inspections.
Taiho Bosai Co., Ltd. / Part 1
The design decision to operate the building under the same power architecture in normal operation and during disasters, rather than treating it as emergency-only equipment.
Taiho Bosai Co., Ltd. / Part 2
A decision based not on conventional high-voltage service, but on whether the building could reduce grid dependence over time.
Upcoming
Scheduled for August 20, 2026
Autonomous Sites
Purpose
After finding a comparable field case, use the purpose pages to review related articles and applicable systems.
Protect critical loads against outages, momentary interruptions, restoration failures and statutory shutdowns.
Maintain disaster radio, PoE, Wi-Fi, surveillance cameras, Starlink and other communications paths.
Reduce dependence on the grid and fuel by designing sites that can operate autonomously.
Select power systems from the perspective of fire, transport, storage, cold environments and public procurement.
Features
Review why each architecture is required through its engineering background and design principles.
Power quality, safety and autonomous distributed design for vessels, USVs, ROVs and shipboard electronics.
A design approach for resilient sites using autonomous, distributed and asynchronous power architecture.
Recovery architecture that assumes incidents cannot always be prevented and focuses on continued operation and restoration.
Power quality and DC architecture for factories, control systems and communications that must not stop.
Next Step
After identifying a comparable case, define the equipment that must remain operational, the required hold time, installation environment and existing infrastructure. The purpose pages then connect to related articles, technical features and applicable systems.
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