Megger MIT481-2 Telecoms Insulation and Continuity Tester
£1,066.80
| Megger MIT481 Telecoms Insulation and Continuity Tester | |
| Insulation Nominal test voltages | 50 V, 100 V, 250 V, 500 V, 1000 V |
| Insulation resistance range | 200 GΩ |
| Range Full Scale Accuracy | 1000 volts ±3% ±2 digits ±0.2% per GΩ 500 volts ±3% ±2 digits ±0.4% per GΩ 250 volts ±3% ±2 digits ±0.8% per GΩ 100 volts ±3% ±2 digits ±2.0% per GΩ 50 volts ±3% ±2 digits ±4.0% per GΩ |
| Analog range | 1 GΩ full scale |
| Short Circuit Current | 2 mA +0% -50% |
| Terminal voltage | -0% +20% ±1 V |
| Test Current on load | 1 mA at min. pass value of insulation specified in BS7671, HD384and IEC364, 2 mA max. |
| EN61557 Operating range | 0.10 M½ to 1.00 GΩ |
| Leakage Current | 10% ±3 digits |
| Voltage display | 3% ±3 digits ±0.5% of rated voltage |
| Capacitance measurement | |
| Measurement range | 100 pF to 10 µF |
| Accuracy | ± 5.0% ±2 digits |
| Distance by capacitance | Arithmetic conversion from capacitance measurement on Default capacitance measurement = 50 nF/m |
| Capacitance range | 40 nF/m to 60 nF/m |
| Result storage | |
| Capacity | >1000 test results |
| Download | Bluetooth wireless |
| Bluetooth Class | Class II |
| Range | up to 10 m |
| Polarization Index (PI) | 10 min/1 minute ratio |
| Dielectric Absorption Ratio (DAR) | 60 sec/30 sec ratio |
| Notes | (1) All ranges measure from 0.00 M½ upwards. (2) Above specifications only apply when high quality silicone leadsare being used. |
| Continuity | |
| Measurement | 0.01 ½ to 99.9 ½ (0 to 100 ½ on analog scale) |
| Accuracy | ±3% ±2 digits (0 to 100 Ω) |
| Open circuit voltage | 5 V ±1 V |
| Test current | 200 mA (–0 mA +20 mA) (0.01 ½ to 9.99 Ω) 20mA (±1 mA ) (10.0 ½ to 99.9 Ω) |
| Zero offset at probe tips | 0.10Ω typical |
| Lead resistance zeroing | Up to 9.00 Ω |
| Buzzer | Variable limit 1Ω, 2Ω, 5Ω,10Ω, 20Ω |
| Resistance | |
| Measurement | 0.01 kΩ to 1000 kΩ (0 to 1 MΩ on analog scale) |
| Accuracy | ±3% ±2 digits Open circuit voltage 5 V ±1 V Short circuit current 20 µA ± 5 µA |
| 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 Analog 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 | 40 - 450 Hz (40 Hz - 99.9 Hz) ±0.5% ±1 digit (100 Hz to450 Hz) |
| Result storage | |
| Capacity | >1000 test results |
| Download | Bluetooth wireless |
| Bluetooth Class | Class II |
| Range | up to 10 m |
| Power | |
| 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 and case | 456 x 178 x 89 mm (18 in. x 7 in. x 3.5 in.) |
| Weight | |
| Instrument only | 590 gms (20.73 oz.), 775 gms (27.22 oz.) with boot |
| Instrument and case | 1.75kg (3.86 lb) |
| Fuse | Use only a 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse of highbreaking capacity HBC 50 kA minimum. Glass fuses MUST NOT be fitted. |
| Safety Protection | The instruments meet EN 61010-1 (1995) to 600 V phase to earth, Category IV. Refer to safety warnings supplied. |
| E.M.C. | In accordance with IEC 61326 including amendment No.1 |
| Temperature effects | |
| Temperature coefficient | <0.1&Omega per °C up to 1 G&Omega |
| Environmental | |
| Operating range | -10 to +55° C |
| Operating humidity | 90% RH at 40° C max. |
| Storage temperature range | -25 to +70° C |
| Calibration Temperature | +20° C |
| Maximum altitude | 2000 m |
| Dust and water protection | IP54 Protected against dust and splashing water |
Description
MIT481 Telecoms insulation and continuity tester
The Megger MIT480 series instruments have been developed specifically for the telecommunications industry. The insulation and continuity testers combine the latest range of measurement techniques with new instrument design to provide a state-of-the-art tester that is compact and comfortable to hold. The MIT480 series directly replaces the well-established BM80 product group, given greater functionality with simplified operation and greater application range.
The range:
MIT480 50 V, 100 V tester MIT481 50 V, 100 V, 250 V, 500 V, 1000 V tester MIT485 As 481 plus downloading results
Insulation Testing:
- Test voltages - 50 V/100 V or 50 V to 1000 V insulation test voltages available depending on instrument. The actual test voltage is displayed on the smaller digital readout, with the insulation result on the larger digital display.
- Analogue arc - The display also features an analogue arc to replicate the response of a moving coil display.
- Insulation leakage current - The MIT481 and MIT485 offer insulation leakage current display, in addition to insulation test voltage.
- Insulation testing - up to 10 GΩ or 200 GΩ test range are available.
- Silicone test leads - (supplied) are essential to prevent error in measurement on insulation tests of greater than 10 GΩ .
- Test inhibit - prevents testing if voltages in excess of 75 V are detected when making insulation tests.
- Test lock - allows the insulation test to be ‘locked’ on continuously.
- Timed testing - MIT481 and MIT485 have timed insulation test options.
Continuity and Resistance:
- 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.
- Auto test - on circuit contact enables real two handed operation without the need to press the test button.
- Lead null - Lead resistance compensation (NULL) operates up to 9.99 Ω of resistance.
- Buzzer ON-OFF - selected by push button.
- Limit alarm - Continuity buzzer limit alarm provides adjustment of the maximum acceptable resistance. Resistance below the set limit sounds the buzzer. This is adjustable from 1 Ω to 20 Ω in 5 steps.
- kΩ range - extends resistance measurement from 10 Ω to 1 MΩ.
Capacitance measurement:
- Capacitance measurement - auto ranges from 0.1 nF to 10 µF. Results are displayed on the primary digital display.
- Cable length - is displayed on the secondary display. Cable length is calculated from an adjustable cable capacitance reference (default 50 nF/km).
- Cable capacitance reference - A variable value for distance calculation is adjustable from 40 nF/km to 60 nf/km.
- km or Feet - Can be displayed, selected in set-up.
Voltage and Frequency:
- CATIV - Suitable for use on circuits up to 600 V CAT IV.
- AC voltage - measurement is True RMS up to 600 V.
- DC Voltage - measurement to 600 V.
- Fully auto-ranging - from 10 mV up to 600 V provides wide range of applications and suitable for transducer inputs
- A default voltmeter - is activated on any test function if a circuit voltage is detected.
Additional Features:
- All tests will be inhibited if a live circuit voltage above 75 V is detected.
- Instrument fuse failure will not affect instrument safety functions.
- Rubber boot combines the tough shock absorbing outer protection with excellent grip, on a strong modified ABS housing, providing an almost indestructible case.
- Battery requirements are 5 AA batteries of either standard Alkaline or Nickel Metal Hydride (NiMH) rechargeable type.
- Battery condition status is permanently displayed.
Megger 480 Series Selection Guide
Features & Specification
| Key Features | Manufacturer Certificate Included, Resistance Measurement, Capacitance Measurement, Continuity Measurement, Memory Function, Test Probe Included, Frequency Measurement, TRMS Measurement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Product Stock Status | Next Day Delivery (subject to availability) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Manufacturer | Megger | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Short Description |
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Delivery
Updated January 2024
Please note, our cut-off time is 2:00pm
Orders requiring calibration
Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received PM and requiring calibration may on occasion miss dispatch that day, according to the complexity of the calibration.Be assured they will ship on the next dispatch this in most cases should not add more than 24 hours to your delivery.
Bank/Public Holidays
Predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scopeof our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.
*UK Mainland (Revised March 2021)
| Service | Price |
| Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value OVER £75.00 ex VAT | FREE |
| Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value UNDER £75.00 ex VAT | £4.95 |
| Next WORKING Day (excludes Saturdays, Sundays and public holidays) – UK Mainland only - Zones A & B - ANY order value - Order by 2:00pm | £7.75 |
| Saturday ANYTIME Delivery - Order by 2:00pm | £9.95 |
Delivery Surcharges
Because of the high cost of carriage, we regretfully need to apply a surcharge on all deliveries made in the following regions:
- Zones A & B - Mainland delivery rates apply.
- Zone C - Scottish Highlands (Charges are calculated at the checkout).
- Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands (Charges are calculated at the checkout).
- Zone E - Northern Ireland (Charges are calculated at the checkout).
- Zone F - Republic of Ireland (Charges are calculated at the checkout).
Offshore Services
All offshore deliveries are a 3-4 day service as standard. This includes Channel Islands, Northern & Southern Ireland, Scottish Islands, Isle of Man and the Scilly Isles.
International delivery
International delivery charges are automatically added to your order at the checkout. For any questions regarding international deliveries please contact us at sales@isswww.co.uk
Export
All export inquiries should be directed to the export division before placement of order.
If no shipping option is available to your selected country please call us FREE on 0800 0224 060 to discuss your requirements.
All stated prices are subject to VAT at the current rate where applicable.
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