5KV Digital Insulation Resistance with Polarization Index

The Motwane IT-51 is a microprocessor based digital insulation tester designed for testing various types of electrical apparatus like transformers, switchgear, motors, generators, cables, and substation products. IT-51 has a digital display and an analog for arc display. It automatically performs IR Test and Polarization Index by selecting modes. IT-51 has a large LCD white backlight display that shows leakage current in scrolling form along with its IR value and PI value.

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    The Motwane IT-51 is a microprocessor based digital insulation tester designed for testing various types of electrical apparatus like transformers, switchgear, motors, generators, cables, and substation products. IT-51 has a digital display and an analog for arc display. It automatically performs IR Test and Polarization Index by selecting modes. IT-51 has a large LCD white backlight display that shows leakage current in scrolling form along with its IR value and PI value.

    Insulation Resistance Test: The IR test is an acceptance test which is important for future comparative purposes. It helps to determine the suitability of the electrical apparatus for energizing or for the application of the high-potential (hi-pot) test. The IR test must attain successful completion to validate the factory warranty. It must be conducted immediately before energizing the electrical apparatus or  before commencing the high potential test.

    Polarization Index Test: This is an extension of the IR test. In this test, two IR measurements are considered where the first reading is taken at 1 min and the second reading is taken at 10 mins. Then the ratio of the 10 min reading is compared to a 1 min reading which is then calculated to give the PI dielectric absorption value. The PI of winding-to-winding and winding-to-ground is determined. A PI value of below 2 is indicative of insulation deterioration and should be investigated further.

    IT-51 is a lightweight instrument that can be easily moved around for electrical testing. It has rechargeable battery operation along with an AC mains provision for battery charging. It also has an ingress protection of IP54. The device has automatic capacitive loads discharged at the end of the test.

    Application

    The Insulation Resistance test is an essential test that helps to check the condition of electrical insulation. The insulation resistance quality of an electrical system degrades with time and with environmental conditions such as temperature, humidity, moisture, and dust particles. This device is designed for routine and diagnostic testing like IR, PI of high voltage electrical apparatus including electrical rotating machinery, transformers, HV & LV switchgear, cables, insulators, etc.

    Features 

    • Selectable test voltage from 250V, 500V, 1000V, 2500V, 5000V DC
    •  Insulation resistance measurement up to 1TΩ
    • Polarization index measurement facility 
    • Short circuit current < 1.4 mA. approx
    • AC/DC voltage measurement up to 600V
    • Two programmable timers from 0 Sec to 99 minutes
    • Pleasant LCD Backlight
    • Internal rechargeable battery
    • Safety – IP 54, CAT IV 600V, and CE conformity
    • Robust ABS body with self-carrying handle for easy portability
    • Automatic discharge for capacitive circuits
    • Guard terminal to minimize the surface leakage

     

    Terminal Voltage 

    Test Voltage : 250V, 500V, 1000V, 2500V, 5000V 
    Test Voltage Accuracy : ± 5 % of rdg
    Short circuit current : 1.4 mA ± 0.5 mA 
    Programmable Timers : T1 and T2

    Insulation Resistance 

    Analog Display : 1 KΩ to 1 TΩ
    Digital Display : (3 Digit Display) 1 KΩ to 1 TΩ

    Insulation Accuracy 

    Up to 1GΩ : All Ranges ±( 5 % + 2 digits) 
    Over 1 GΩ : 5000V ± (5 % + 0.04% per GΩ) 
     2500V ± (5 % + 0.08% per GΩ) 
    1000V ± (5 % +0.2% per GΩ) 
    500V ± (5 % + 0.4% per GΩ) 
    250V ±( 5 % + 0.8% per GΩ)

    AC/DC Voltage Measurement 

    Range : Up to 600V 
    Accuracy : ± (5 % of rdg + 5 digits) 

    Polarization index (PI) 

    Display range : 0 – 99.9 
    Accuracy : ±(5 % of reading + 5 digits) 
    Resolution : 0.01 

    Power Supply Specifications

    Battery: Internal Rechargeable 
    Display: Custom Built LCD with white a backlight
    Mains Power Supply: 110/ 230VAC 50/60Hz 

    General 

    Weight: 5.0 Kg (Approx) (without Accessories) 
    Dimensions (H X W X L) : 195 mm X 290 mm X 360 mm (Approx)

    Environmental Specifications

    Operating Temperature: -10°C to 55°C
    Storage Temp: -20°C to 70°C
    Humidity: less than 95% RH, non 0 condensing max at 40°C

    Safety and Standards 

    Safety in accordance with : EN 61010-1 : 2001 
    EMC in accordance with EN 61326-1 : 2006 
    Type Test in accordance with IS 11994 
    Ingress Protection IP 54 
    CE & CAT IV 600V 
    Safety of test lead in accordance with 
    EN 61010-031 : 2002 +A1 : 2008

    Standard Accessories Included 

    Test leads 3 meter : 1 Set 
    User manual : 1 No 
    Calibration sheet : 1 No 

    Optional Accessories 

    Test leads 10 meters : 1 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.

    Contact Us

    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

    Rajshekhar

    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

    Start your journey with Motwane

    It’s easy to switch to Motwane. Our specialists take care of all conceivable requirements your project may have. With over a 100 years of experience in delivering world-class projects, Motware is the right choice.

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