1002-001

MIT400 CAT IV Industrial Insulation Testers MIT400 CAT IV Industrial Insulation Testers n CAT IV 600 V applications n TRMS & DC Voltage measurement n Insulation testing up to 1000 V and 200 GΩ n Continuity testing at 200 mA or 20 mA down to 0.01 Ω n Pass/Fail limit alarms n Combined Analogue and dual digital display n PI/DAR and Timer function n Test result storage (MIT420) n Bluetooth® wireless data transfer (MIT430) DESCRIPTION The new Megger MIT400 series insulation and continuity testers has been designed for electrical testing by the utilities, industrial, commercial and domestic electricians. The wide range of features also makes the MIT400 series ideal for the maintenance and service/repair engineer. n Analogue Safety rated to CAT IV 600 V the MIT400 series of testers are suitable for use in high energy systems, up to the substation transformer, while lower test voltages can be used in data and telecommunication systems. n Silicone The range The range consists of five instruments: MIT400 250 V, 500 V and 1000 V MIT410 50 V, 100 V, 250 V, 500 V and 1000 V + PI, DAR MIT415 10 V, 25 V, 50 V,100 V, 250 V and 500 V + PI, DAR MIT420 50 V, 100 V, 250 V, 500 V & 1000 V + PI, DAR and result storage MIT430 50 V, 100 V, 250 V, 500 V & 1000 V + Bluetooth download MIT40X 10 V to 100 V in 1 V steps Insulation testing n Test voltages - 10 V to 1000 V insulation test voltages available n Test n Test Lock - Locks insulation test on continuously. voltage display - The actual test voltage is displayed on the smaller digital readout, with the insulation result on the larger digital display. arc - The display also features an analogue arc to replicate the response of a moving coil display. n PI and DAR - Polarisation Index (PI) and Dielectric Absorption Ratio (DAR) functions n 200 GΩ - Insulation testing from 20 GΩ (MIT400) to 200 GΩ (MIT420 and MIT430). leads - High quality flexible silicone test leads are comfortable to use and prevent measurement errors on higher GΩ ranges. n Test inhibit - prevents testing if voltages in excess of 50 V are detected when making insulation tests. n Insulation buzzer - The buzzer can be set to buzz if the insulation resistance is above a preset limit, set via the Setup menu. Continuity testing n Auto-test - Auto test on circuit contact enables real two handed operation without the need to press the test button. n 200 mA or 20 mA - Either 200 mA or 20 mA continuity test currents are available. 20 mA test current will considerably increase battery life. n Lead null - Lead resistance compensation (NULL) operates up to 9.99 Ω of resistance. n Buzzer - ON-OFF selected by simple push button. n Buzzer limit - Continuity buzzer limit alarm provides adjustment of the maximum resistance the continuity buzzer sounds. This is adjustable from 1 Ω to 20 Ω in 5 steps. n kΩ range extends resistance measurement to 1 MΩ. MIT400 Series Industrial Insulation Testers Display The display offers a combination of analogue arc and a dual digital readout: Analogue arc: n Full display width analogue arc. n Patented arc display shows essential charge and discharge characteristics not visible on a digital display. n Single pointer “needle” response is similar to a moving coil meter. n Logarithmic display for better low insulation value measurements. Dual digital display: n Large main digital readout for good visibility of all main measurement results n Second digital display for additional data such as: Insulation test voltage. Insulation leakage current. Supply frequency (when measuring volts). Test mode eg. PI, DAR or TI (Timed mode). connected to live circuits or across phases. Specifically, all instruments: n Meet the international requirements of IEC1010-2 and EN61557. n Live circuit detection inhibits insulation testing on circuits above 50 V. n Live circuit detection and test inhibit on continuity measurements. n Default display of live circuit voltage on all ranges. n Detection and inhibit functions even if the protection fuse has failed. n Suitable for use on CAT IV applications and supply voltages to 600 V. 600 V CAT IV All MIT400 instruments are designed to meet the safety requirements for use on CAT IV 600 V installations. APPLICATIONS MIT40X - Variable insulation voltage tester The MIT40X provides a unique solution for awkward insulation voltage measurement applications. The MIT40X has a variable insulation test voltage from 10 V to 100 V in 1 V steps, selectable in the “Set-Up” menu. Once selected this can only be changed by re-configuring in the Setup menu. Electrical installations testing: The MIT400 includes all the features required for electricians and engineers working in a range of industries. Available features are selected to make testing easy and fast in a range of situations. Typical industries include: Electrical supply companies Large and small scale electrical installation Periodic inspection and testing Cable testing Typical applications include: Service, repair and maintenance: n Commercial The MIT410 and MIT420 add additional features required for engineers working on more demanding applications. Functions such as PI and DAR, capacitance measurement and higher insulation range increase the suitability for applications such as: Manufacturing/production testing Panel building Railway and other transportation Motor testing Cable inspection/quality control Street lighting maintenance Avionics ground testing and maintenance Military applications avionics land, marine and air communications n Manufacturing/production line goods n Electrostatic measurement n Component testing n Battery powered traction and lifting equipment n Military Storage & Downloading results MIT420 The MIT420 is capable of saving test results for recall to the screen. A simple storage structure allows for a test number and screen results to be recalled individually. MIT430 The MIT430 supports both test result storage and downloading. Test results can be stored in the instrument and subsequently downloaded to a computer with the Megger download manager software. Data transfer is by Bluetooth, with the MIT430 Bluetooth transmitter being enabled when the Download mode is selected on the instrument. NOTE: The receiving PC needs to have Bluetooth capability or a USB port fitted a Bluetooth receiver. Class II (10m) is acceptable. Safety Designed to be exceptionally safe to use, fast detecting circuitry prevents damage to the instruments if accidentally The MIT415 also includes 25 and 50 V ranges for testing communication circuits for signalling controls : Elevator service engineers Street lights (Pedestrian controls) Machines and saftey interlock/commisioning service HVAC controls Robotic Power and Control Electrostatic discharge testing: The 10 V and 100 V insulation test voltage ranges are ideal for ESD testing, including servicing of equipment and routine maintenance of ESD conductive flooring, bench mats and grounding systems etc. Typical industries include: Electronic manufacturing Electronic servicing and repair Calibration houses MIT400 Series Industrial Insulation Testers Special Apps Industrial Insulation Voltage range 400 410 415 Resolution 420 430 40X 0.01 MΩ 10-100 V variable (2 GΩ - 20 GΩ) n 10 V 1 GΩ 25 V 2 GΩ 50 V 5 GΩ 5 GΩ 10 GΩ 10 GΩ 100 V 10 GΩ 10 GΩ 20 GΩ 20 GΩ 250 V 5 GΩ 20 GΩ 20 GΩ 20 GΩ 50 GΩ 500 V 10 GΩ 50 GΩ 50 GΩ 100 GΩ 100 GΩ 1000 V 20 GΩ 100 GΩ 200 GΩ 200 GΩ Leakage current display n n n n n n n n n n n 0.01 to 99.9 Ω n n n n n n Variable current limit. 200 mA/20 mA n n n n n n Fast buzzer- selectable threshold n n n n n n kΩ range to 999 k Ω n n n n n Default voltmeter n n n n n n TRMS measurement to 600 V n n n n n n n n n n n n n INS test voltage display Continuity measurement Other functions and features Live circuit warning at 50 V Frequency measurement 15 Hz to 450 Hz Capacitance (0.1 nf to 10 µF) Backlight n n n n n n Battery condition display n n n n n n n n n n n n n n n n n n n n n n n Insulation timed - PI – DAR Tests Test button plus lock button n Limit alarm pass band on INS Auto power down n n n Other functions and features Result storage Bluetooth downloading n Included accessories Red/black silicone lead set with clips n n n n n n Protective rubber boot n n n n n n n n n n Remote switch probe Calibration certificate with product n n n n n n Batteries n n n n n n 1 year warranty (upgradable to 3 years free within 3 months of purchase) n n n n n n MIT400 Series Industrial Insulation Testers SPECIFICATION Zero offset at probe tips: 0,10 Ω typical Lead resistance zeroing: Up to 9.99 Ω All quoted accuracies are at +20°C. Insulation Nominal test voltages MIT400 250 V, 500 V, 1000 V MIT410, 420, 430 50 V, 100 V, 250 V, 500 V, 1000 V MIT415 10 V, 25 V, 50 V, 100 V, 250 V, 500 V MIT40X 10 V to 100 V variable (1 V increments) Insulation resistance range (at maximum test voltage) MIT400 20 GΩ MIT410 100 GΩ MIT415 50 GΩ MIT420, 430 200 GΩ MIT40X 20 GΩ Range Full Scale Accuracy All ranges ±2% ±2 digits up to 100 MΩ. Then: 1000 volts 500 volts. 250 volts. 100 volts. 50 volts. 10 volts ±3% ±3% ±3% ±3% ±3% ±3% ±2 digits ±0.2% per GΩ ±2 digits ±0.4% per GΩ ±2 digits ±0.8% per GΩ ±2 digits ±2.0% per GΩ ±2 digits ±4.0% per GΩ ±2 digits ±2.0% per 100 MΩ Analogue range: 1 GΩ full scale Short Circuit Current: 2 mA +0% -50% Terminal voltage: MIT40X -0% +20% ±1 V ±1 V Test Current on load: 1 mA at min. pass value of insulation specified in BS7671, HD384 and IEC364, 2 mA max. Buzzer: Variable limit 1 Ω, 2 Ω, 5 Ω, 10 Ω, 20 Ω Resistance Measurement: Accuracy: Open circuit voltage: Short circuit current: 0.01 kΩ to 1000 kΩ (0 to 1 MΩ on analogue scale) ±3% ±2 digits up to 50 kΩ then ±5% ±2 digits 5 V ±1 V 1.5 mA ±0.2 mA Voltage range 0 to 600 V d.c. ±2% ±2 digits 10 mV to 600 V TRMS sinusoidal (40 to 400 Hz) ±2% ±2 digits 0 to 1000 V on Analogue scale Unspecified input level 0 - 10 mV (40 to 400 Hz) For non-sinusoidal waveforms additional specification apply: ±3% ±2 digits 101 mV to 600 V TRMS and ±8% ±2 digits 10 mV to 100 mV TRMS Default Voltmeter: Operates at >25 V a.c. or d.c. on any range except OFF Frequency: 15 - 450 Hz ±0.5% ±1 digit Capacitance measurement MIT420, MIT430 Measurement range: Accuracy: 100 pF to 10 µF ±5.0% ±2 digits Distance by capacitance: MIT420, MIT430 Arithmetic conversion from capacitance measurement on Default capacitance measurement: 50 nF/km EN61557 Operating range: 0,10 MΩ to 1,00 GΩ Capacitance range: 40 nF/km to 60 nF/km Leakage current range 10 µA 2000 µA Leakage current: 10% ±3 digits Result storage Capacity: Download: Bluetooth Class: Range: >1000 test results Bluetooth wireless Class II up to 10 m Voltage display: 3% ±3 digits ±0.5% of rated voltage Polarisation Index (PI): 10 min / 1minute ratio Dielectric Absorption Ratio (DAR): 60 sec / 30 sec ratio Notes: (1) All ranges measure from 0,00 MΩ upwards. (2) Above specifications only apply when high quality silicone leads are being used. Continuity Measurement: Accuracy: Open circuit voltage: Power Supply: 5 x 1,5 V cells type IEC LR6 (AA, MN1500, HP7, AM3 R6HP) Alkaline NiMH rechargeable cells may be used. Battery life: 2200 insulation tests with duty cycle of 5 sec ON /55 sec OFF @ 1000 V into 1 MΩ Dimensions Instrument: 220 x 92 x 50 mm (8.66 in. x 3.63 in. x 1.97 in.) Instrument + case: 456 x 178 x 89 mm (18 in. x 7 in. x 3.5 in.) 0,01 Ω to 99,9 Ω (0 to 100 Ω on analogue scale) ±2% ±2 digits (0 to 100 Ω) 5 V ±1 V Test current: 205 mA (±5 mA) (0.01 Ω to 9.99 Ω) 20 mA (±1 mA ) (10.0 Ω to 99.9 Ω) Weight Instrument only: 590 gms, 775 gms with boot (20.73 oz. 27.22 oz.) Instrument plus case: 1.75kg (3.86 lb) MIT400 CATIV Industrial Insulation Testers Fuse Use only a 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse of high breaking capacity HBC 50 kA minimum. Glass fuses MUST NOT be fitted. Safety Protection The instruments meet IEC 61010-1 to 600 V phase to earth, Category IV. Refer to safety warnings supplied. E.M.C. In accordance with IEC 61326-1 Service error Insulation range Continuity range Resistance range Voltage range Capacitance range Distance range Frequency range ±15% ±2 digits ±26% ±2 digits ±12% ±2 digits ±10% ±2 digits ±18% ±2 digits ±18% ±2 digits ±5% ±2 digits The Bluetooth word mark and logo are owned by the Bluetooth SIG, Inc. and any use of such marks by Megger is under license. Temperature effects Temperature coefficient: