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  6. Insulation Resistance Monitoring Device IRS-250/IRS-500 [Preventive Maintenance]

Insulation Resistance Monitoring Device IRS-250/IRS-500 [Preventive Maintenance]

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IRS-500 (Rated measurement voltage: 500V) / IRS-250 (Rated measurement voltage: 250V)

last updated:Oct 21, 2025

竹中電機
竹中電機
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[Invention Grand Prize Winning Product] Preventing line stoppage due to deterioration of motor insulation resistance in advance → Automation of mega testing

It measures highly reliable insulation resistance using the Megger method. It automatically monitors the insulation condition of various motors mounted on machine tools. This reduces maintenance costs and the burden of maintenance inventory costs, allowing for the prevention of sudden line stoppages in advance. No power outage of equipment is required. Due to the Megger method, it can measure high-precision values at a lower cost than the I0r method. Measurements can be taken after the motor has completely stopped, thanks to a delay timer. Alarm output settings can be differentiated from four types of measurement values (selectable from 1MΩ, 5MΩ, 10MΩ, 20MΩ). It is highly versatile and does not depend on the equipment, capacity, or manufacturer. Although it is a high-voltage measurement method, there is no concern about electric shock. It can also accommodate equipment that requires safety circuits. By connecting an optional touch panel, detailed settings and history management can be performed.

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IRS500.png

Insulation Resistance Monitoring Device IRS-250/IRS-500 [Preventive Maintenance]

IRS500.png
IRS500.png
  • Related Link - https://www.takenakadenki.co.jp/download/

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basic information

【External Dimensions】: W88×H90×L58 (DIN rail mounting shape) 【Weight】: 210g 【Power Supply Voltage】: DC24V (range 20.4V~26.4V) 【Power Consumption】: 2.5W or less 【Operating Ambient Temperature】: 0~55℃ (no freezing or condensation) 【Vibration Resistance (malfunction)】: 10~55Hz, 0.5mm peak amplitude, in all XYZ directions 【Safety Category】: Class2 (JIS B 9705-1) 【Monitored Power Supply Voltage】: Single-phase 100V / Three-phase 200V (50/60Hz) / DC220V or less 【Control Relay Output】: Measurement output / Insulation drop output / Equipment abnormality output Rated load AC125V 0.5A / DC24V 1A 【Measurement Mode】: Model IRS-500 DC500V / 0~100MΩ Model IRS-250 DC250V / 0~100MΩ 【Measurement Accuracy】: First effective measurement range ±5% or less (0.1MΩ~50MΩ) Second effective measurement range ±10% or less (50MΩ~100MΩ)

Price range

P2

Delivery Time

Please contact us for details

※The delivery time may vary depending on the quantity, so please feel free to contact us.

Applications/Examples of results

■Insulation measurement of various motors in production equipment ■Insulation measurement of heaters in production equipment and molds ■Insulation measurement of power generation equipment ■Simple insulation measurement of parts (products) that require insulation during the process

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Model number overview
IRS-500 Insulation Resistance Monitoring Device, Measurement Range DC500V Type
IRS-250 Insulation Resistance Monitoring Device, Measurement Range DC250V Type
IRS-GP Insulation Resistance Monitoring Device Option, Touch Panel Display
IRS-DA Insulation Resistance Monitoring Device Option, Analog Output Conversion Unit

News about this product(1)

IRS Inventor Award Campaign

Notice of IRS Award Commemoration Campaign (Ended)

  • Campaign

In commemoration of our product "Insulation Resistance Monitoring Device (IRS)" receiving the 46th Invention Award co-sponsored by the Japan Institute of Invention and Innovation and Nikkan Kogyo Shimbun, we will be conducting a campaign for customers who purchase the IRS during the period. [Details] For each IRS unit purchased, we will present an Amazon gift card.  IRS-250 / IRS-500 ・・・ 10,000 yen gift card per unit  IRS-9250 / IRS-9500 ・・・ 30,000 yen gift card per unit *Limited to end users. Maximum of 50,000 yen per company (per department). [Period] From March 18, 2021 (Thursday) to June 30, 2021 (Wednesday). For more details, please see the campaign page.

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竹中電機

竹中電機

Industrial Electrical Equipment

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We provide a one-stop service from the sale of control equipment to design, manufacturing, construction, adjustment, and maintenance. We have developed various in-house products, such as "insulation resistance monitoring devices" and "processing anomaly detection devices," through a problem-solving process for production sites, and we are expanding nationwide. With the desire to "eliminate leakage fire incidents," we offer a "insulation monitoring solution" that provides systems for leakage monitoring in production environments. Beyond the cutting edge. We fully support the transformation into smart factories with advanced technology.

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