PROBLEM SOLVING PRODUCTS- Spark Discharge Detection Device A spark discharge is a small electric discharge, which could lead to an arcdischarge and eventually to an arc fault.
Spark Discharge Detection Device prevents electrical fire occurring andprotects precious lives and properties by detecting spark discharges.

Product Features
Spark Discharge Detection Device is an alarm device specifically designed for- addressing defects in electrical circuits early by alerting to discharge inthe very early stage.
- detecting spark discharge occurrence in both visible and invisible areasby picking up noise superimposed on voltage waveform.

spaDetection Alertrknoiseby buzzer sound and LED lighting
Email Notification (optional)
Built-in Type

Plug Typeby adding a contact monitoring device *1
Note: *1) Monitoring and communication devices are not included.

Spark Noise A nalysis

Unique Technology

In our research, we have found that peculiar high-frequency noise is observed accompanying spark discharges. By measuring andanalyzing noise with as many household electric appliances as possible, our Spark Noise Analysis Technology has been established andsucceeded in detecting spark discharge noise with high accuracy.
The figure shows the waveform of high-frequency noise between
the pins when tracking occurs at an outlet. Likewise, high-frequency
noise appears when cables are damaged or short circuit occurs.
Spark Discharge Detection Device analyzes noise waveform anddiagnoses spark discharges.
Tracking

Spark Noise

Proportion of Fires due to Arc Discharges

Causes of Arc Discharge

Electric discharges account for relatively large proportions in thenumbers of fires with electrical origins in many countries.

Mishandling of household electric appliances and deterioration
could result in fires.

Arc (Spark) discharges

OthersElectrical Fires
TOTAL

United States

73% (23,760)

32,620South Korea

84% (7,989)

9,472

Malaysia

61% (4,558)

7,477

Tokyo

43% (602)

1,399

Tracking

Moist dust

Short Circuit & Damaged Cable

Pierced cables

Excessive force

Twisted cords

Pinched cords

Looped cables

Reference data :1) Summarized by Nitto Kogyo Corporation, based on NFPA’s “Home Fires Caused by Electrical Distribution and Lighting Equipment, February 2022”, Page 11, <Table 8. Home Fires Involving Electrical
Distribution and Lighting Equipment by Heat Source: 2015-2019 Annual Averages>2) Summarized by Nitto Kogyo Corporation, based on National Fire Agency’s “2021 Fire Statistics Yearbook”, Page 207, <Table AE10-1. Electrical Fires by Origin and Location>3) Summarized by Nitto Kogyo Corporation, based on Fire and Rescue Department of Malaysia (JBPM)’s “Annual Report 2021”, Page 34, <Fire Investigation Statistics by Origins for Structural Fires for the Year
2020 and 2021〉(extracted data for 2021)
4) Summarized by Nitto Kogyo Corporation, based on Tokyo Fire Department’s “2022 Fact Sheet of Reported Fires”, Page 15, <Table 1-6-1. Electrical Fires in the Past 10 Years> and Page 110, <Table 3-6-2.
Electrical Appliance Fires by Source and Origin> (extracted data for 2021)

K-478-E

PROBLEM SOLVING PRODUCTS
Comparison of Spark Discharge Detection Device and AFDD/AFCI
Spark Discharge Detection Device

AFDD (Arc Fault Detection Device)
AFCI (Arc Fault Circuit Interrupter)

Function

Alerts when detecting spark discharges (arc discharges in an early stage)

Interrupts circuits when detecting arc discharges

Sensitivity

Detects small discharges before fire risks become obvious- Series arc : 230VAC, below 2.5A
- Parallel arc : 230VAC, below 2.5A

Detects imminent fire risks- Series arc : 230VAC, 2.5A and above- Parallel arc : 230VAC, 75A and above

FeatureRaises the alarm by lighting, beeping and contact output→ Avoids causing inconveniences due to sudden power cut by early detection→ Notifies by email by adding a contact monitoring device *1

Interrupts electric circuits→ Unexpected power cut

Note: *1) Monitoring and communication devices are not included.

Product Variation
Built-in Type has a wide range covered, and Plug Type identifies circuits where spark discharges are. Combined use ofboth types enhances safety of electricity.

perfe

ct

Plug Type *2- Requires no electric works- Dedicated to certain circuits(Detection range: 30m radius in maximum *3)→ Identifies problematic circuits- Notifies you by lighting, beeping and email *4

Built-in Type- Installed in residential distribution panels- Covers a wide range(Detection range: 70m radius maximum *3)- Notifies you by lighting, beeping and email *4
Note: *2) Currently compatible with Type A plug (100VAC) only.
*3) The range may vary according to individual environment.
*4) Contact monitoring and communication devices are not included.

Enhanced Safety by combined use

Also recommendedforHeritages

Barns

Restaurants

Warehouses

Application Example
Japan has over 5,000 National Treasure and Important Cultural Property buildings. As those structures are mostly made of wood, they
are extremely vulnerable to fire. In 2019, Shuri Castle in Okinawa was destroyed severely by what is believed to be electrical fire. The
administrators of National Treasures have the increasing sense of impending crisis. We expect our solution help pass the precious
legacy on to future generations.

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For enquiry
https://www.nito.co.jp/english/contact/