Motwane has been offering a comprehensive and varied range of products designed in-house to cater to multiple segments of the power and energy sector. Digital Insulation tester (Model: IT-250G spot) is a microcontroller based battery operated insulation tester for measuring insulation in all types of electrical equipment. IT-250G has a digital and analog bar graph display designed for high voltage insulation resistance which is used for testing in the maintenance and servicing of cables, electric motors, transformers, switchgear, and industrial installations. DC insulation tests are performed at 250V, 500V, 1000V, 2500V, and 5000V. Insulation resistance measuring range is 1K Ohm to 250G Ohm. It’s auto power-off facility enhances battery life and the pleasant amber backlight allows the user to work in a dusky environment.
IT-250G is ideally suited for insulation resistance testing during erection, commissioning or installation at electrical substations, preventive operation, maintenance, and servicing of cables or transformers at industrial installations. Equipped with a robust ABS body, the device comes with a rugged strap that allows easy handling during transit and testing at outdoor sites. The guard terminal features minimal effects of surface leakages and gives an error-free measurement. Loaded with multiple propositions, IT250G becomes the ideal choice for routine insulation tests done by service providers. It also has a continuity range for continuity measurement. It automatically discharges and the decaying discharge voltage is displayed on the screen.
The Insulation Resistance test is an essential test that helps to check the condition of electrical insulations. The insulation resistance quality of an electrical system degrades with time and with environmental conditions like temperature, humidity, moisture, and dust particles. The 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.
Test Voltage : 250V, 500V, 1000V, 2500V, 5000V
Test Voltage Accuracy : ± 10 % +5 digit
Short circuit current : <1.4 mA (± 0.5 mA ) approx.
Overload Protection : 230V DC/AC RMS for 30 secs
Analog Display : 1 KΩ to 250GΩ
|Test Voltage||Max. Insulation Resistance||Accuracy ± (% reading + Digit)|
|250V||12.5 GΩ||± (5% + 5)|
Note: ‐ 1. Test Voltage accuracy ± (10% + 5) is when tested by using 1000MΩ impedance probe Motwane make HV 30/HV 40 or equivalent
|0 – 200Ω||± (3% + 10)||230V DC/AC RMS for 30 sec|
|Buzzer will sound < 20Ω approx.|
|Open circuit voltage on continuity range is 8V approx.|
|Short circuit current is 100mA approx. on Continuity range w.r.t GUARD / COM terminal. (battery should be in full charged condition)|
Insulation Resistance measurement : Digital & Analog (Bar Graph) indication.
Display : LCD display with a backlight ( 90 X 60mm)
Dimensions (L X W X H) : 230 mm X 165 mm X 95 mm approx.
Weight : 1.5 Kg approx. (without accessories)
Default Test on time : 30 sec.
Selectable test time : 1 sec. to 99 minutes.
HV ON Indication : Visual & Audible.
Data Storage functions : 1000 readings.
Data Recall function.
Auto discharge facility after every test
Operating Temperature : -00C to 550 C
Storage Temp : -200 C to 600 C
Humidity : 90% RH at 00 C to 400 C max. (non condensing).
70% RH at 400 C to 500 C max. (non condensing).
Power Supply : 8 X 1.5V AA size Alkaline batteries (IEC LR6 )
Power Consumption : 40mA approx.
Battery status Indication : YES.
Auto Power Off : After 15 min.
Idle sleep mode consumption 400µA approx. (When not in use always keep the rotary switch at OFF position & remove the batteries from the battery compartment to save the battery life)
Safety and Standards (CE Certifications)
Measurement Category : CAT IV (600V) Reinforced insulation
Safety : EN 61010‐1
EMC : EN 61326-1
IP rating : IP 54
Standard Accessories Included
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