1KV Digital Insulation Tester: i-12

THE MOTWANE’s Digital Insulation Tester Model I-12 is a compact, lightweight, handheld battery & mains operated device, (with the help of a mains eliminator) best suited for industrial use. I-12 is a 1kV insulation tester with a maximum range of 2GΩ for insulation resistance measurement.

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    THE MOTWANE’s Digital Insulation Tester Model I-12 is a compact, lightweight, handheld battery & mains operated device, (with the help of a mains eliminator) best suited for industrial use. I-12 is a 1kV insulation tester with a maximum range of 2GΩ for insulation resistance measurement. It is designed for low voltage insulation resistance testing in maintenance and services, which involves applications like cables, rotating machines, LT transformers, switchgear, and industrial installations. It has selectable test voltages of 50V, 100V, 250V, 500V, and 1000V. The insulation tester is provided with an added low resistance measurement along with AC/DC voltage measurements. It is developed to suit extreme environmental conditions.


    The Insulation Resistance test is an essential test that helps to verify the condition of electrical insulations. The insulation resistance quality of an electrical system degrades with time, and with environmental conditions such as. temperature, humidity, moisture, and dust particles.  This instrument is designed for routine and diagnostic testing like IR of high voltage electrical apparatus and is useful for the following segments


    Electrical equipment (motors, transformers, machines, etc.) 

    Industrial, commercial & residential installations

    Cables for distribution or the communication networks 

    Household appliances (washing machines, mixer, toaster, etc.) 

    Control panels

    Railway and metal industry applications




    • GO-NO-GO test facility 
    • Pre-selected timer facility
    • Mains eliminator
    • Selectable voltage facility of 50,100,250,500 &1000V.
    • Auto-ranging measurement from 10KΩ to 2GΩ.
    • Live circuit detection of up to 600V AC/DC
    • Low resistance measurement up to 100Ω with continuity testing 
    • Temporary storage of 10 readings
    • User selectable backlight for measurement in a dark environment.
    • Low battery indication.
    • Auto power off facility.
    • Blown fuse indication.



    • CE mark conforming to latest EN 61010-1:2010 
    • EN 61326-1:2005, CAT IV 600V, IP54 protection
    • Overload protection 1200V for all ranges
    • Guard terminal to minimize surface leakage



    • Robust and rugged polycarbonate casing


    Display : 3 ½ digits LCD with a backlight 
    Analog Display : Logarithmic Scale 
    Display : 7 segment digits 
    Enclosure Material : Polycarbonate 
    Dimensions (W x H x D) : approx.102 mm x 209 mm x 44mm
    Net Weight (Instrument) : approx. 600gm. (With battery excluding accessories) 
    Gross Weight (with accessories) : approx. 1 Kg.


    Nominal Temp. Range : 0°C to 35°
    Operating Temp. : -20°C to 40°C (Full Range), 20°C to 60°C (Up to 100MΩ) 

    Storage Temp. : -25°C to 65°

    Relative Humidity : 90% RH at 40°C max


    Battery : 6 X 1.5V cells IEC LR6 Alkaline 
    (Nickel-cadmium rechargeable cells may also be used) 
    (Battery symbol appears on the LCD screen, battery replacement is necessary.) 
    Mains eliminator 
    Input : 230VAC, 50/60Hz 
    Output : 12 VDC, 1000mA


    CE Mark 
    Directives for CE : LVD:2006/95/EC., EMC: 2004/104/EC 
    Measurement Category : CAT III 1000V/CAT IV 600V Reinforced insulation 
    Relevant Standard Specifications : EN 61010-1:2010,EN 61326-1:2005 
    IP Rating (Dust & Water Protection) : IP 54 
    Type tested as per : IS 10656


    Measurement Function Range Resolution  Accuracy 

    ±(% reading+dgt)

    Overload Protection
    Insulation Resistance

    MΩ *1 (50V,100V)

    0.01 MΩ to 0.99 MΩ 10 KΩ (0.01 MΩ) ±(3% ± 2) 1200 V rms(10 sec)
    ≥ 1.0 MΩ to 99.9 MΩ 100 KΩ to (0.1 MΩ) ±(5% ± 2)
    ≥100 MΩ to 999 MΩ 1MΩ ±(10% ± 5)
    Insulation Resistance

    MΩ/GΩ *1


    0.01 MΩ to 9.99 MΩ 10 KΩ (0.01 MΩ ±(5% ± 2)
    ≥10 MΩ to 99.9 MΩ 100KΩ (0.1 MΩ) ±(5% ± 2)
    ≥100 MΩ to 999 MΩ 1 MΩ ±(10% ± 5)
    1GΩ to 2GΩ 10MΩ ±(10% ± 5)
    Low Ohms (Ω) *2 0 – 9.99Ω 0.01Ω at 100 mA ±(3% ± 2)
    ≥10Ω to 99.9Ω 0. 1Ω at 10 mA ±(5% ± 2)
    Continuity Test Current 100mA 0 – 9.99Ω 0.01Ω ±(3% ± 2)
    V AC/DC 25V – 450V 1V ±(2% ± 3)
    450V – 600V 1V ±3%

    *1 For Insulation resistance range, 
    Terminal voltage on open circuit (DC) : – 0% to + 30% of rated voltage 
    Short Circuit current : < 2 mA 

    *2 For low Ohms/Continuity Ranges 

    *Open circuit voltage : 5V ± 2V d.c. 

    *Lead Resistance compensation : 0 – 9.99Ω

    Standard Accessories 

    • Set of test leads of 1m length with Crocodile clips
    • Instruction Manual 
    • Warranty card 
    • Batteries 6 X 1.5V AA, Alkaline (IEC LR6) 
    • Fuse (800mA/600V) 

    Optional Accessories 

    • Mains Eliminator (12 VDC, 1000mA output) 
    • Test lead set

    Our Customers

    Motwane’s customer base is a testament to its ongoing ability to provide reliable, accurate, and long-lasting products, resulting in enduring relationships that are based on mutual satisfaction, loyalty, and trust.

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    Motwane products are highly reliable, built with great quality, and deliver accurate results.  We at BSES Rajdhani Power have been using Motwane products for many years, and continue to do so.

    Shailendra Saxena

    Additional VP Protection BSES Rajdhani Power Ltd.

    Motwane is the oldest and the most trusted company in electrical testing products and solutions also. Motwane is known for reliable and rugged products also, we have procured from them. And our organization has been using these products and have found them satisfactory in performance and services also.

    Mr. Shrikant S Rajurkar

    Director Technical MSETCL

    By using the MOT-WARE software, all equipment testing difficulties have been removed, leading to increased efficiency and happy clients.

    Mr. Milind Thekedar

    Managing Director JBS Enterprises Pvt. Ltd.

    Motwane offers great products! The company fullfills our demands, and supplies reliable products for our Power, Oil & Gas, and other industry projects.  

    Justin Thomas

    FAWAZ Trading & Engineering Services Co. W.L.L.

    MOTWANE is reputed brand since many years & we prefer it for all our International Projects

    Nikunj Mistri

    DGM- India Operations MBH Power Pvt. Ltd.

    We are very satisfied on Motwane’s oil testing products to test electrical properties of Insulation Oil


    LABGULF Sharjah UAE

    TATA Projects regularly uses Motwane’s Test & Measurement equipment for various undertakings. We are satisfied with the product performance!

    Naiyar Kamal Siddiqui

    AGM Projects Tata Projects Ltd.

    MOT-WARE will enable us to go live with data immediately after recording

    Sanjay Sarkar

    Head Projects IBMS SPG, Sterling and Wilson

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