Adiradh offering 5 kV insulation resistance tester MIT525 which is compact, light ,CAT IV for the diagnostic testing and maintenance of high voltage electrical equipment. 5kV Insulation Resistance Tester MIT525 is an advanced 5kV test set for the diagnostic testing and maintenance of high voltage electrical equipment.5KV Insulation tester MIT525 is both smaller and lighter than its predecessor, making it even easier to carry and store. As well as measuring insulation resistance to 10 TΩ, the 5KV Digital HV Insulation resistance tester also offers various diagnostic tests such as polarisation index, dielectric absorption ratio, step voltage, dielectric discharge and ramp testing.Adiradh Energy Pvt Ltd offering High quality of Diagnostic insulation resistance testers MIT 525 with best prices and also have Large Inventory in Stock available in India
5KV Diagnostic Insulation Resistance Tester MIT525 equipped with lithium ion fast rechargeable batteries, the instrument has a large, clear, easy-to-read display, making it equally suitable for use in both bright sunlight and poorly lit environments. Information displayed includes resistance, voltage, leakage current, capacitance, battery status and time constant. In addition 5KV IR Testers the elapsed time of the test is displayed constantly removing the need for separate timer. Adiradh offering best prices for Megger MIT525 in India
5KV Insulation tester
Adiradh offering 5KV Megger MIT525 which provide a high level of quality testing along with prime safety, convenience and portability. MIT525 offers selectable test voltages at 250, 500, 1000, 2500, and 5000 V. The Megger MIT525 increases the functionality by permitting test voltage to be set in any 10 V increment from 50 V to 1 kV, then in 25 V steps all the way to 5 kV. 5KV Diagnostic Insulation Resistance Tester MIT525 comes with all test modes including a ramp test plus advanced memory functions with recall to screen, RTC for time/date stamp of results, and USB drive to PC/PowerDB.
5KV Insulation resistance testers are designed for distribution maintenance, commissioning, and industrial/OEM applications. Accurately perform insulation testing on power MV and HV transformers, current transformers, cables, motors and generators (stators and rotors), circuit breakers, and more. These units allow you to take measurements when connected to line power/mains supply with a dead battery. The intelligent battery charging function ensures the optimal charge rate as a function of the battery level, resulting in minimum charge times.
5KV Insulation resistance tester Applications
Industrial sites
Cable testing
Motor testing
Automotive
ESD
Panel building
Avionics
Maintenance sites
5KV Insulation tester MI525 Lead set
5KV Test lead set
3 meter lead set, medium size insulated clips insulated clips Part No: 1008-022
Scope of supply of 5KV Insulation tester MIT525
Guard terminal:
Measured current = surface leakage current + insulation leakage current
To avoid this problem, we need to remove the surface leakage current component from our measurements, with help of 5KV Megger MIT525 especially when we are measuring an asset with an insulation resistance of 100 MΩ or more at voltages of 1000 V and above. This is where the guard terminal comes into play.The guard terminal is a third connection that is made to the asset under test. This connection provides a return path for the surface leakage current that, as we have seen, can otherwise lead to a substantial error in the insulation resistance measurement.
Guard terminals importance in Insulation resistance tester
Megger MIT and S1 families of 5 kV and 10 kV insulation testers have a unique specification for the performance of their guard terminals. The specification means the instrument has the ability to take IR measurements when the guarded leakage current is 200 times the magnitude of the measured insulation
leakage current and have no more than an additional 2% error in accuracy.To achieve this and still provide the required safety protection to meet IEC61010 is of course important
Brochure for 5KV Insulation resistance tester MIT525
5KV Diagnostic Insulation Resistance Tester MIT525 user manual
| Attribute | Value |
| Tester Type | Insulation Tester |
| Minimum Test Voltage | 250V |
| Maximum Test Voltage | 5000V |
| Maximum Insulation Resistance Measurement | 10TΩ |
| Display Type | LCD |
| Test Current | 6mA |
| Battery Life | 6 h |
| Minimum Operating Temperature | -20°C |
| Maximum Operating Temperature | +50°C |
| Power Source | Battery, Mains |
| Safety Category | CAT IV 600V |
| Length | 315mm |
| Weight | 4.5kg |
| Model Number p | MIT525 |
| Plug Type | Type C – European Plug, Type G – British 3-pin |
| Height | 181mm |
| Battery Type | Lithium-Ion |
| Dimensions | 315 x 285 x 181mm |
| Width | 285mm |
Various types of diagnostic insulation tests:
Spot Reading Test (IR )(IR(t)): The simplest of all insulation tests and the one most associated with lower voltage insulation testers; the test voltage is applied for a short, specific period of time and a reading is then taken
Time vs. Resistance Test (DAR): The concept of the time resistance test is to take successive readings at specified times during a single test.
Polarization Index Test (PI): The simplest implementation of the time resistance test for solid insulation, the PI Test requires only two readings followed by a simple division; the one-minute reading is divided into the ten-minute reading to provide a ratio. With “good” insulation, leakage current is relatively small and resistance rises continually as current decreases from the effects of charging and dielectric absorption
Dielectric Discharge Test (DD): While the other methods mentioned measure the currents flowing during the charging process, the DD test measures the current that flows during discharge of the test sample.
Step Voltage Test (SV): Since good insulation is resistive, an increase in test voltage will lead to an increase in current with a result that the resistance remains constant. Any deviation from this could signify defective insulation. At lower test voltages, say 500 V or 1000 V, it is quite possible that these defects might be unobserved, but as the voltage rises we reach a point where ionization can take place within cracks or cavities, resulting in an increase in current, and therefore a reduction in the insulation resistance.
Ramped Voltage Test: The ramped voltage test is endorsed in IEEE95-2002 as part of the recommended practice for insulation testing of AC electric machinery (2300 V and above) with high direct voltage. When using this test method, the test voltage is gradually increased (ramped) at a set rate to a final level, which results in an increase in the current. Any variations in current compared to the increase in applied test voltage can provide useful diagnostic information about the condition of the insulation.
Choose an insulation tester?
Test Voltage
You should also base your voltage requirements on the rated voltage of the equipment you are working with, specifically whether or not you will be performing tests at or above rated, i.e. stress tests.Something to keep in mind is that pervasive insulation damage, such as moisture ingress, is revealed at any voltage; whereas mechanical damage usually requires a higher voltage for detection – capable of arcing an air gap.With 1 kV, 2.5 kV, and 5 kV models to choose from, this may be the most critical decision you have to make.
Measurement Range
When working in the realm of predictive maintenance, it’s critical to know exactly how your measurements change over time, specifically in the upper values of resistance. Insulation testers allow you to test into the tera ohm range (TΩ) – giving you the capability to differentiate between elevated resistance measurements over time. It may be helpful to determine the exact insulation resistance values of your equipment when it’s new, and then choose a tester that can truly measure those values.
Power Source
Batteries are likely the most convenient,
Voltage Detection
Insulation testers will detect unwanted voltage on the item under test
Display
Combine both Analogue and LCD display capabilities in a single unit suggestable
Ω/kΩ/GΩ/TΩ Ranges
Okay, these are commonly referred to as “continuity” and “resistance” ranges, which greatly enhance the depth of your testing capabilities. Ohm ranges can help you verify the integrity of circuits and connections, while kilohm ranges are helpful for identifying areas of insulation deterioration.
Guard Terminal
To eliminate certain components of leakage from measurements, should take the guard terminal into consideration.
Price
From a few rupees thousands to several Lakhs , we have an insulation tester for every budget. Don’t let the price tag fool you either. Regardless of your budget, you’ll find a model that not only fits your testing requirements, but also offers a range of additional features too.
“Extra” Features
Newer models offer pre-programmed standardized tests, such as Polarization Index, Step Voltage, and Dielectric Discharge, along with calculation and storage of results, downloading capabilities, timed tests, leakage current measurements, and a “burn mode”.We recommend that if it fits your budget – go for it!
CAT Rating
In addition to the obvious performance specifications,instrumentation should also be evaluated according to various quality standards. Paramount among these is safety. One of the most recognized and respected safety standards has been established by the International Electrotechnical Commission (IEC) in EN61010-1:2001. This standard defines the requirements that test instruments must meet in order to be safe from arc flash and arc blast in specific environments. It is not enough to simply determine that an instrument is “CAT rated”, as it is commonly termed. The CAT rating must be understood, as it rigorously describes where in the electrical environment a given piece of
equipment can and cannot be safely employed.Megger MIT models ensure CAT rating applies to all terminals for safety purposes. Some instruments on the market todayare misleading.CAT Rating Guidelines .“CAT rating” is rendered in two parameters: one indicatingsystem level and the other specifying rated operating voltage.A designation of “CAT IV 600 V” means that the unit is safe to operate in any electrical environment up to and including CAT IV, on cable or apparatus rated up to 600 volts phase to ground.Beware of products that specify the CAT rating while failing to list the voltage level. This is incomplete information and the absence can be costly in terms of safe operation. The CAT rating defines the level of transient (spike or surge) that the instrument has been designed to withstand.
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