Megger MIT525/2 Advanced 5kV Insulation Resistance Tester

Megger MIT525/2 Advanced 5kV Insulation Resistance Tester



INSTRUMENT PRODUCTIVITY AND ACCURACY
This is a focus of the MIT and S1-Series, offering rapid charge batteries and operation from an AC source when the battery is flat or low. An intuitive user interface ensures no lost time remembering how to use the tester. Simplicity of operation is achieved with two rotary switches and a large backlight display which enables multiple measurement information to be displayed simultaneously. A graphical quick start guide is provided inside the lid of each model to assist first time users and has QR code links to the online User Guide.

Measurement accuracy is of high importance for any insulation resistance measurement. It is particularly important to ensure that the accuracy is maintained up to higher IR values that are required by some applications. The Essential range provides an excellent ±5% accuracy all the way up to 1 TΩ at 5,000 V or 2 TΩ at 10,000 V. Always check that your expected range of measurements sits within the accuracy range capability of your selected instrument.

PI PREDICTOR FUNCTION (PIP)
The Polarization Index test can be time consuming, with a 10 minute test (30 mins on 3 phase) and with multiple items to test, any time saved is a bonus. PIp does just that. The PI predictor function uses the first part of the IR curve to predict the rest at 5 minutes into the test. The PIp can start as early as 3 minutes into the test and will stop when it is confident in the prediction.

RE>ACT TEST MODE
This ground breaking feature will revolutionize the reliability of your measurements. When insulation testing it is essential that any re-absorption current from the insulation under test is fully discharged before starting the test. Remaining absorption current, depending on polarity, can result in IR measurements that are falsely high or low, with the potential to incorrectly pass any failing insulation. The RE>Act mode not only measures this reabsorption current but also provides an indication to the user of the impact it will have on the instruments’ measurement range and accuracy.

SAFETY FEATURES
The list of safety features is quite extensive and include the following:
Safety of operation is built in, all 5 kV and 10 kV models are safety rated to CAT IV 600 V up to 3000 m (9842 ft) altitude.

Dual case. The whole range feature a dual case design with a tough outer case to protect the tester from knocks and drops and a fire retardant inner case. The case IP rating prevents moisture and dust ingress when storing or carrying the instrument. The lids have velcro-on pouches ensuring that leads remain with the instrument at all times. Case lids are removable for improved access to the terminals. Voltage warnings. The entire range also feature a multitude of voltage warnings to help ensure user safety. In fact there are five levels of warnings. Before testing has started the instrument will provide these warnings:

• Level 1: Live voltage above 30 V applied
• Level 2: 75 % of the instruments noise limit exceeded, check filter settings
• Level 3: 100 % of instruments noise limit exceeded warning and test inhibited
• Level 4: External voltage overheating discharge resistors disconnect
• Level 5: The fifth warning is a unique one. During testing in high noise environments induced noise surges can result in extremely high voltages being applied to the instrument. In the event that these voltages are higher than the instruments reinforced insulation limits the instrument will halt the test to reduce terminal voltage and warn the user not to touch the instrument.

RE>Act adds two important safety features. Firstly, it removes the possibility to pass insulation that should have been failed, and secondly, it can also be used to monitor discharge following a test. This means the user can ensure that a dangerous return voltage will not occur.

Test leads. The supplied test leads are double insulated with clamps rated at 3 kV, equivalent to 6 kV single insulation for the medium clip leadset and 5 kV equivalent to 10 kV single insulation for the large clip. Non-detachable test clips. All test leads feature nondetachable test clips for additional safety, and 4 mm HV insulated plugs that lock into the instrument, again for additional safety.



Specifications: