Megger MIT1025-2 Advanced 10kV Insulation Tester 1016-094

Megger MIT1025-2 Advanced 10kV Insulation Tester 1016-094

Product Code: MEG1016-094

Price

£3685.00 ex. VAT £4422.00 inc. VAT

In Stock

The Megger Advanced range of 5 kV, 10 kV, and 15 kV insulation resistance testers is ideal for engineers and technicians performing insulation testing on transformers, motors, switchgear, and cables in environments up to 230 kV. These instruments support IR, DAR, PI, DD, SV, ramp, and PDC (with software), providing the diagnostic depth needed for condition assessment and maintenance planning.

Each model includes PI Predictor™ to speed up testing, internal memory for storing results, and optional Bluetooth® for exporting data to PowerDB or CertSuite — no manual recording required.

The new innovative patent applied RE>Act test mode allows the user to make accurate measurements by monitoring reabsorption current. This groundbreaking test mode can ensure reabsorption current does not result in incorrectly passing or failing insulation, helping to maintain safety. In addition, the test mode can be used to ensure dangerous return voltages to not occur.

Choose from three models — MIT525/2, MIT1025/2, and MIT1525/2 — based on your required test voltage. With 6 mA noise immunity and high-performance guard terminals, the Advanced range delivers reliable results where remote control and substation-level noise handling are not required.

The Advanced models are an ideal choice if, in addition to the above, you need to record test results, transfer results to software/mobile app (via USB or Bluetooth LE), and want the benefits of more diagnostic insulation testing. The Advanced range also adds additional noise immunity for power distribution environments, and the ability to either increase or decrease the output current.

Please see additional documentation in the Product Downloads tab below for more detailed product specification.

MEG1010-176_Datasheet.pdf MEGMIT525-2-MIT1025-2-MIT1525-2_Datasheet.pdf MEGMIT515-2-MIT1015-MIT525-2-MIT1025-2-MIT1525-2-User_Guide_1.pdf MEGReAct_AN_en_1.pdf

	The ADVANCED range 5 kV, 10 kV and 15 kV Insulation Resistance Testers Comparison table	MIT515/2 MIT1015	MIT525/2 MIT1025/2 MIT1525/2	S1-568/2 S1-1068/2 S1-1568/2
	Features	ESSENTIAL	ADVANCED	EXPERT
Test Capability	High Guard Terminal performance	■	■	■
	IR	■	■	■
	IR(t)	■	■	■
	PI Polarisation index	■	■	■
	PI Predictor	■	■	■
	DAR Dielectric Absorption Ratio	■	■	■
	DD Dielectric Discharge		■	■
	Ramp test		■	■
	RE>Act mode	■	■	■
	PDC Test		■	■
Test Voltage	Maximum voltages available	5 kV or 10 kV	5 kV, 10 kV or 15 kV	5 kV, 10 kV or 15 kV
Charging and burn mode current	Default maximum current	3mA	3mA	3mA
Charging and burn mode current	User-selectable maximum current values	N/A	1 mA, 3 mA, 6 mA (6 mA only from mains supply)	1 mA, 2 mA, 3 mA 4 mA, 5 mA, 6 mA (6 mA from internal battery and mains supply)
Noise immunity	Max. noise current with measurement within accuracy spec.	3 mA (LV and MV <45 kV)	6 mA (HV <230 kV)	8 mA (EHV <1000 kV)
	Adaptive filter			■
	Negative current handling	■	■	■
	Averaging filter			■
Safety	CAT IV 1000 V		15kV	15kV
	CAT IV 600 V	■	■	■
	Hazardous peak voltage detection during IR measurement	■	■	■
Data storage / features	On board - time stamped		■	■
	Temperature value stored		■	■
	Humidity value stored			■
Communications	Test result transfer via wired USB		■	■
	Test results transfer via wireless Bluetooth LE		■	■
	Test result live streaming via wired USB		■	■
	Test result live streaming via wireless Bluetooth LE		■	■
	Remote control via wired USB			■
Display	New custom colour display	■	■	■
Accessories	Carry all holdall	■	■	■
Accessories	Deeper lid pouch		■	■
Software Support	CertSuite Asset Lite FREE		■	■
	CertSuite Asset compatible		■	■
	Power DB Lite FREE		■	■
	Power DB Advance or Pro support		■	■

2025 New features

Key Features:

RE>Act mode enhanced accuracy and safety
PI predictor function (PIp)
PDC test capability Measures up to 30 TΩ
Safety rated up to CAT IV 1000 V to 3000 m
Up to 6 mA noise rejection
Unique dual-case design - additional user protection
Operates from battery or AC mains supply
Rapid charge Li-ion battery Advanced memory with time / date stamp
Compatible with CertSuite Asset

The Essential models are perfect for performing ‘go/no go’ testing; no need to record test results; working in tough locations; using under 10 kV test voltage.

The Advanced models are an ideal choice if, in addition to the above, you need to record test results, transfer results to software/mobile app (via USB or Bluetooth LE), and want the benefits of more diagnostic insulation testing. The Advanced range also adds additional noise immunity for power distribution environments, and the ability to either increase or decrease the output current.

The Expert range combines everything from the Essential and Advanced ranges. If you work in extreme environments, even 765 kV switch yards, want the additional safety and convenience of remote operation via a USB cable, and full control of the output current, this is the choice for you.

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 / empty. 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. 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 Advanced range provides an excellent ±5% accuracy all the way up to 1 TΩ at 5,000 V, 2 TΩ at 10,000 V or 3 TΩ at 15,000 V. Always check that your expected range of measurements sits within the accuracy range capability of your selected instrument.

PI Predictor Function (PIP) (Patented)

The Polarisation 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 predicition.

RE>ACT Test Mode (Patent applied for)

This ground breaking feature will revolutionise 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 that 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 altitude and the 15 kV MIT1525/2 is rated at CAT IV 1000 V up to 4000 m 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 whole range also features 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 resisitors 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. The 15 kV leadset is insulated to 15 kV.

Technical Specification:

	MIT525/2	MIT1025/2	MIT1525/2
AC Voltage (Auto-Ranging)	90-264 V rms, 47- 63 Hz 100 VA		90-264 V rms, 47- 63 Hz 200 VA
Battery Charge Time	2.5 hours deep discharge 2 hours normal discharge
Battery Voltage	10.8 V, 5.2 Ah Li-ion batteries, meet IEC 62133:2003, MIT1525/2 has 2 battery packs
Battery Life	6 hours (typical) continuous testing at 5 kV with a 100 MΩ load	4.5 hours (typical) continuous testing at 10 kV with a 100 MΩ load	4.5 hours (typical) continuous testing at 15 kV with a 100 MΩ load
Auto Power Off	The instrument turns off after a few minutes if not used to conserve battery life
30 Min Quick Charge	1 hour operation at 5 kV with a 100 MΩ load
Test Voltage	250 V, 500 V, 1000 V, 2500 V, 5000 V, User-defined test voltage	500 V, 1000 V, 2500 V, 5000 V, 10000 V, User-defined test voltage	1000 V, 2500 V, 5000 V, 10000 V, 15000 V, User-defined test voltage
User-Defined Test Voltage	40 V to 1 kV in 10 V steps 1 kV to 5 kV in 25 V steps,		100 V to 1 kV in 10 V steps 1 kV to 5 kV in 25 V steps 5 kV to 15 kV in 25 V steps
Test Voltage Accuracy	+4 %, -0 %, ±10 V nominal test voltage at 1 GΩ load (0 °C to 30 °C)
Resistance Range	10 kΩ to 15 TΩ @ 5 kV 10 kΩ to 20 TΩ @ 10 kV 10 kΩ to 30 TΩ @ 15 kV
Re<Act	Re-absorption current measurement nominal accuracy. Operational up to 30 V externally applied
Accuracy (23 °C) from 1 MΩ to	5000 V 2500 V 1000 V 500 V 250 V ±5% 1 TΩ 500 GΩ 200 GΩ 100 GΩ 50 GΩ ±20% 10 TΩ 5 TΩ 2 TΩ 1 TΩ 500 GΩ	10 kV 5000 V 2500 V 1000 V 500 V ±5 % 2 TΩ 1 TΩ 500 GΩ 200 GΩ 100 GΩ ±20 % 20 TΩ 10 TΩ 5 TΩ 2 TΩ 1 TΩ	15 kV 10 kV 5000 V 2500 V 1000 V ±5 % 3 TΩ 2 TΩ 1 TΩ 500 GΩ 200 GΩ ±20 % 30 TΩ 20 TΩ 10 TΩ 5 TΩ 2 TΩ
Guard Terminal Performance	When measuring an insulation resistance of 100 GΩ at 5000 V, the tester can guard out current IG at least 5000 times the insulation test current IL with a maximum additional resistance error of 1%
Display Analogue	100 kΩ to 10 TΩ
Digital	10 kΩ to 10 TΩ	10 kΩ to 20 TΩ	10 kΩ to 30 TΩ
Short Circuit / Charge Current	1 mA, 3 mA Default 6 mA @ 5 kV, 10 kV, 15 kV (6 mA only from mains supply)
Insulation Test Alarm	100 kΩ to 10 GΩ
Capacitor Charge	<3 s/μF at 3 mA to 5 kV	<5 s/μF at 3 mA to 10 kV	<7.5 s/μF at 3 mA to 15 kV
Capacitor Discharge	<250 ms/μF to discharge from 5 kV to 50 V	<250 ms/μF to discharge from 10 kV to 50 V	<3500 ms/μF to discharge from 15 kV to 50 V
Capacitance Range With the test voltage set above 500 V	10 nF to 25 μF		10 nF to 50 μF
Capacitance Measurement Accuracy	±10% ±5 nF
Current Range	0.01 nA to 6 mA
Current Accuracy	±5% ±0.2 nA at all voltages (20 °C)
Interference	6 mA from 450 V to 5 kV	6 mA from 960 V to 10 kV	6 mA from 2100 V to 15 kV
Voltmeter Range	30 V to 660 V AC or DC, 45 Hz – 65 Hz
Voltmeter Accuracy	±3%, ±3 V
Timer Range	Up to 99 minutes 59 seconds, 15-second minimum setting
Memory Capacity	5.5 hours logging @ 5-second intervals
Test Modes	IR, IR(t), DAR, PI, SV, DD, PDC, Ramp test
Interface	USB type B (device) Bluetooth® Class 2
Real Time Output	1 Hz output readings (V, I, R)
Maximum Altitude	3000 m (5 kV, 10 kV) 3000 m (15 kV)
Operating Temperature Range	-20 °C to 50 °C
Storage Temperature Range	-25 °C to 65 °C
Humidity	90 % RH non-condensing at 40 °C
IP Rating	IP65 (lid closed), IP40 (lid open)
Safety	CAT IV 600 V to 3000 m altitude		CAT IV 1000 V to 3000 m altitude. Meets the requirements of IEC 61010-1
Dimensions	L 315 mm x W 285 mm x H 181 mm		L 360 mm x W 305 mm x H 194 mm

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