So Brain

Company Profile

So Brain Co. Ltd.
Copyright©2017 SO BRAIN Corporation

Company Overview

So Brain

So Brain Co. Ltd： Dainisarugakucho Building 7F , 1-2‐4 Kandasarugaku-cho, Chiyoda-ku, Tokyo
Tel. 03-3518-2010 Fax 03-3518-2020
Foundation ： February 2005
Business： R & D of Leak Current Detection Technology based on Vector Theory
Igr Method (True R Technology)
Fabrication and Sales of True R Products and Electrical Appliances
Management of True Patent & License
Products： True R Detector H (“Handy”) ： Small-sized potable Leak Current Detector
True R Detector T Ⅰ(100V) & TⅡ(100V-200V) （“Tool Checker”)： Leak Current Checker for Electric Tools etc.
True R Detector C3F ： Leak Current Checker for welding machine etc(Three-phase △ AC200V/220V)
Licensed Products ： Clamp Meter & Logger (Sanwa Electric Instrument Co.)
Leak Monitoring System (Satori Electric Co. & Omron Social Solutions
Service Co.)
Patents: International Patents acquired in 12 countries including Japan in the world
regarding Leakage Current Detection Device, Method and Program forDetecting Leakage Current
AddressCopyright©2011 SO BRAIN Corporation

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True R PatentAreaInternational Patents acquired in 12 countries
including Japan in the world
So Brain
We are looking for True R licensed Partners。
India（IN270981）
U.S. (US8,009,394B2)

SoBrain
SoBrainEU (1855122)(UK, FR, DE, IT）

Hong Kong (HK1116543)

Japan(4159590) (4945727)(4920357) ( 5329470)(5748797) (6289846)(Note)
Bracketed No.= Patent No.
Russian F (2358272)

Taiwan (I300482)

China (634842)

Korea, R (10-0974047)(10-1117870 )(10-1145024 )Copyright©2011 SO BRAIN Corporation2

So Brain

What is True R？
A Break-through technology to detect true leakage
In May 2009, our technology & thesis was scrutinized and introduced in
the Journal of the Institute of Electrical Installation Engineers of JapanThe weakness and problems of traditional leak current detection technology :1. It may detect and operate without any actual leakage
2. It may not detect leakage when it occurs

3. It can not find accurately and timely points of leakage
4. Detection speed is slow
✪ Our True R (Vector Theory Igr Method) is a solution for the above events.
✪ True R is a break-through technology t o detect true leak current without any

influence caused by noise, harmonic, surge current and capacitance factors.
“Accurate measurement and Speedy detection”, which is important advantagesof our method, will allow us to develop and apply the technology to a circuit
breaker in the future.
TrueR is an epoch-making technology which is indispensable for leak current
control in Smart Communities and Smart Grids in future.
Copyright©2011 SO BRAIN Corporation3

True R Leak Detection Technology is indispensable (1/2)

So Brain

The best and compatible technology for Energy-saving Environment
1. In highly advanced digital oriented society（Smart Community）, inverters and various energy

saving technologies are employed in many intelligent buildings & factories or echo-system etc.,
and there leak control by Io method technology will no longer function effectively due to noise,harmonic and increase of capacitance factor etc.. A new leak current control technology
is strongly required today. The following capabilities become highly indispensable :ｏ Highly accurate leak detectionｏ Enhanced speed to determine true leak current
ｏ Ability to measure and detect leak while load is operating

2. Only solution for the above subjects is True R technology (Vector Theory Igr Method) andalso Japan National Safety Regulation for Private-use Electric Structures points out that
there is a risk in relying on the conventional Io method and adoption of Igr Method ispreferable.

Copyright©2011 SO BRAIN Corporation

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So Brain

True R Leak Detection Technology is indispensable (2/2)
Misconnection can be detected by True R technology.

＜Misconnection in lighting equipment＞ In case of connecting lighting circuit of single
phase as load, any of R, T, S should be connected to N phase, which becomes Zero phase.
It is easy to wire wrongly with mistaking E for N as potential difference N and E is zero.

TRight Wiring

NR

Load current caused by misconnection
leads to leak current

SEMisconnection＜Misconnection founded in foreign countries＞It is not recognized that zero phase must be
kept by connecting load to N as potential difference between N and E is zero in foreign cases

ANE
Right wiring

Wrong wiring
Copyright©2011 SO BRAIN Corporation5

So Brain

True R Product Line-up・ Small-sized
Portable Igr LeakMeasuring
SystemSo Brain

Licensedmerchandise

Clamp Meter I0R500
Logger I0R700/700V

FeatureCapable of easily identifying
true leakage situation
Measurement by I0 is difficultin the field with highcapacitance

Igr adapter

・Igr Leak
Monitoring
SystemInsulation monitoring system

Satori Electric Co., Ltd.
Insulation monitoring
systemMost suitable for monitoring
plants and intelligent buildings

・ Leak Checker forElectric Tools etc.
Utilized by power station, etc.

・ Demand monitoring(Addition of Igrfunction)
・ Igr leakage breaker(three-phase)

Under researchand development
including making
IC as chip・ New need for demand
monitoring・ Replace present I0
Leakage breaker

Performance
・Display Igr value (true leakcurrent) Display
conventional I0 value
・Capable of diagnosing I0action

・Capable of all time
monitoring・Capable of considering
construction andmanufacturing
period by controllingincrease and decrease・Insulation diagnosis
easier and quicker thanmegger・Capable of diagnosing
tools and power supply
drum all together

AndMoreIgr breaker
developed &practicalized(single phase)・ Capable of integration
by circuit configuration
using only IC
・ Definite speed of0.03 seconds realized
Copyright©2011 SO BRAIN Corporation6Initiative with Kanto Electrical Safty Inspection Association

Ground Fault Current Suppression
Control SystemSo Brain

In case of alarming in leak monitoring
device while any people can’t enter thefield at night and holiday, leak current
value can be adjusted to keep the safetyvalue without causing any ground fault
current by the Control System at left
until leak survey can be made.
The Control System at left needs theleak monitoring device with accuracy
above a certain level, which enable toshow higher performance of the left
system only by introducing True Rtechnology.

Ministry of Economy,
Trade & Industry
minister Prize awrded
in JECA FAIR2017

Copyright©2011 SO BRAIN Corporation

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So Brain

Leak consulting by So Brain
We accept leak survey!!
Leak measurement and diagnosis using So Brain’s worldly patented
technology True R method leak detection technology

Concerning leaks, many unclear phenomena, such as intermittent leaks and malfunction by noise are reported. Insulation
resistance measurement has limitations, and surveys other than True R method require much man power and time. Leak survey
in the True R system can significantly reduce the survey time, capable of identifying leak point and cause. Those who havedifficulty in the leak survey should contact So Brain.

Capable of diagnosing which is the problem, noise or insulation deterioration!
Leak measuring system and leak measurement and recording system
When the cause was found to be insulation deterioration due to loading after doubting leak, an injection type leak monitoring
system may sometimes malfunction. In addition, the present state is that determination is impossible because the characteristics ofgeneral leak detection technology and the scope of leak identification are not well known. We can propose solutions by performing
environmental diagnosis in True R system and analyzing which is the problem, noise or insulation deterioration. Furthermore, if theproblem is found to be noise, it is very difficult to determine the possibility of a recurrence. However, we can propose specificcorrective method by drawing a graph of recorded leak generation and comparing noise with insulation deterioration value.

Hearing

Preliminary
investigationof generation
point

Surveywork

Contact: So Brain Co., Ltd.
Dainisarugakuchou Bldg. 7F 1-2-4, Kandasarugaku-cho,
Chiyoda-ku, Tokyo 101-0064 Japan
TEL：+81-3-3518-2010 / FAX： +81-3-3518-2020

Leak value
recording
So Brain

ReportSANWA

So Brain

Copyright©2011 SO BRAIN Corporation

8Future of True R Leak Detection TechnologySo Brain

Smart community/smart grid will appear in the future!
Nuclear, thermal, hydraulic,solar heat, solar light,wind, biomass, etc.

Smart gridIntegrated networkof power, informationand communication
with high efficiency,
high quality andhigh reliability

Energy storage, battery
Intelligent plant and building

Energy saving equipment
such as home appliance, LED,electric vehicle and solar panel

Leak detection, leak monitoring,insulation diagnosis, leak accident
Prevention, and true electric energy
measurement
True R leak measuring system,
relay and breaker.

True R is breakthrough leak detecting and monitoring technology
indispensable for smart community with smart grid
True R capable of detecting leaks in 1mA level for single- and threephases→ In electric security, from insulation resistance control based on megger
value to true leak current control

True R leak monitoring system

True R eliminates the influence of increase of capacitance generated byinverter, energy saving measure, etc., and noise to detect true leakcurrent→ After reviewing the conventional leak control criteria, capable of setting
personal injury limit at 6mA or lessDefinite detection speed of leak current at 0.03 sec realized→ True R leak breaker developed and practicalized

Remarkable improvement of electric security using trueleak current control value < Prevention of leak accident
and measurement of true electric energy >Extension of True R chip
application

Leak from all electric systems visualized
and remote monitoring enabled
Copyright©2011 SO BRAIN Corporation

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So Brain

Contact

If you have any questions about our company , True R technology andproducts, please contact our office shown below:
Contact : So Brain Co., Ltd.

Dainisarugakucho Bldg. 7F
1-2-4, Kandasarugaku-cho, Chiyoda-ku,
Tokyo 101-0064 Japan
Tel +81-3-3518-2010

Fax +81-3-3518-2020

Copyright©2011 SO BRAIN Corporation10