Adiradh Energy offering 5KV Insulation resistance tester MIT515 is the simplest of Megger’s new range of small light 5 kV insulation resistance testers for the testing and maintenance of high voltage electrical equipment. 5KV Insulation tester MIT515 enclosed in a tough case it is both smaller and lighter than its predecessor making it even easier to carry and store. 5KV Insulation resistance tester MIT515 in India 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 in MIT515 includes resistance, voltage, leakage current, capacitance, battery status and time constant. in 5KV Insulation tester the elapsed time of the test is displayed constantly removing the need for separate timer.Adiradh offering bets prices of 5KVDigital High voltage Insulation resistance testers, 5KV Insulation tester , Gigital insulation tester 5KV,Digital insulation tester 5000V in India
5KV Insulation tester
Adiradh offering 5KV Insulation tester CAT IV, Megger MIT515 is the simplest of Megger’s range of small, light HV insulation resistance testers for the testing and maintenance of high voltage electrical equipment. Enclosed in a tough case it is both smaller and lighter than its predecessor making it even easier to carry and store.The MIT515 Insulation resistance tester (IRT) is primarily controlled by two rotary switches and a TEST button used to start and stop a test. The central rotary switch includes an ‘OFF’ position; the instrument switches on by rotating the switch either clockwise or anticlockwise from this position. A range of test voltages for insulation resistance tests up to 5 kV. The ‘lockable’ test voltage range can be adjusted in the settings function.
The settings function is indicated by a spanner symbol and facilitates lock voltage, low resistance alarm, temperature, time/date adjustment. in 5KV Digital high voltage Insulation tester have light blue coloured section of the rotary switch denotes memory functions; open records, download via USB and delete records.A voltmeter is incorporated in the instrument and measures AC/DC voltage from 30 V to 660 V. Frequency (Hz) is measured and displayed for AC voltages. Voltmeter mode is activated by switching to ‘V’ mode.Now 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.
The Megger MIT515,can be powered from the mains supply or by it’s rechargeable battery, which provides for 4½ to 6 hours of continuous testing with a 100 MΩ load, depending on model. The battery pack contains Lithium-ion cells and should be replaced when it no longer holds a charge. A new battery is available as a spare part from Megger. The battery pack is housed within a grey moulded cover secured by four screws. Insulation resistance (IR) is a measurement of how good or bad your insulation is, which can help give you an overall assessment of your electrical equipment’s health. insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms or Gigaohms ,Teraohms . For good insulation, the resistance usually reads in the megohm and Gigaohm range.
5KV Insulation Tester MIT515 Part No:1001-835
5KV Insulation tester MI515 Lead sets
MIT515 Test lead set
10 ft (3 m) lead set, medium size insulated clips Part No: insulated clips Part No: 1008-022
Guard terminal :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.One of the benefits of the guard terminal is that it can be used as a rapid first-line diagnostic tool.Guard terminal is also important when insulation resistance measurements are made periodically on an asset so that the results can be trended
Scope of supply for 5KV Insulation tester MIT515
Brochure for 5KV Insulation resistance tester MIT515
5KV Digital Insulation resistance tester MIT515 user manual
| Test voltages |
250 V, 500 V, 1000 V, 2500 V, 5000 V, V Lock. | ||
| Resistance range | 10 kΩ to 10 TΩ @ 5 kV. | ||
| Lock Test Voltage | 100 V to 1 kV in 10 V steps 1 kV to 5 kV in 25 V steps. |
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| Guard Terminal Performance | Guards out parallel leakage resistance down to 250 kΩ with a maximum additional resistance error of 1% with a 100 MΩ load. | ||
| Display | Analogue: 100kΩ to 10TΩ Digital: 10kΩ to max a above. |
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| Short Circuit/Charge Current | 3mA @ 5kV. | ||
| Insulation Test | Alarm: 100kΩ to 10GΩ. | ||
| Capacitor Charge | <3 s/μF at 3 mA to 5 kV. | ||
| Capacitor Discharge | <120 ms/μF to discharge from 5000 V to 50 V. | ||
| Capacitance Range (with voltage set above 500V) | 10 nF to 25 μF. | ||
| Capacitance Measurement Accuracy | ±10% ±5 nF. | ||
| Current Range | 0.01 nA to 6 mA. | ||
| Current Accuracy | ± 5% ± 0.2 nA at all voltages (23°C). | ||
| Interference | 3 mA from 450 V to 5 kV. | ||
| Voltmeter range | 30 V to 660 V ac or dc, 45Hz – 65Hz. | ||
| Timer range | Up to 99 minutes 59 seconds, 15 second minimum setting. | ||
| Test modes | IR, IR(t), DAR, PI. | ||
| Operating temperature range | -20 °C to 50 °C. | ||
| Battery life | 6 hours (typical) continuous testing at 5 kV with a 100 MΩ load. | ||
| Battery charge time | 2.5 hours deep discharge, 2 hours normal discharge. | ||
| IP rating | IP65 (lid closed), IP40 (lid open). | ||
| Dimensions | 315 x 285 x 181mm. | ||
| Weight | 4.5kg. | ||
| Megger MIT515 Warranty | 1 year | ||
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!
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