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Megger MIT481-2 Telecoms Insulation and Continuity Tester

Telecoms insulation and continuity testers

Next Day Delivery (subject to availability)

£605.00 excluding VAT £726.00 including VAT @ 20% Regular Price: £834.00
  • Manufacturer Certificate Included
  • Resistance Measurement
  • Capacitance Measurement
  • Continuity Measurement
  • Memory Function
  • Test Probe Included
  • Frequency Measurement
  • TRMS Measurement
  • FreeDelivery
  • 30DayMoneyBack
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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


480 Series Selection Guide

 

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

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 scope 
of our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.


UK Mainland 

Standard FREE 1-2 Day Courier Delivery – UK Mainland only - Zones A & B

Included in the price for all orders over £75.00 (exc vat). Sent using express courier, delivered within 1-2 working days from the date of your order, subject to availability.

Next Day Before 10:30 (Excluding Saturday & SundayExpress Courier Delivery – UK Mainland only - Zones A & B
Sent by express courier, delivered next day (excluding weekends) from the date of your order, subject to availability.

Next Day Before 12:00 Delivery (Excluding Saturday & Sunday) – UK Mainland only - Zones A & B
Sent by express courier, delivered next day (excluding weekends) from the date of your order, subject to availability.

Saturday Before 10:30 Express Courier Delivery – UK Mainland only - Zones A & B
Sent by express courier, delivered the next Saturday from the date of your order, subject to availability. (Order by 3:00pm the preceding Friday)

Saturday Before 12:00 Express Courier Delivery – UK Mainland only - Zones A & B
Sent by express courier, delivered the next Saturday from the date of your order, subject to availability. (Order by 3:00pm the preceding Friday)

Saturday Anytime >6:00pm Express Courier Delivery – UK Mainland only - Zones A & B
Sent by express courier, delivered the next Saturday from the date of your order, subject to availability. (Order by 3:00pm the preceding Friday)

Sunday Before 12:00 Express Courier Delivery – UK Mainland only - Zones A & B
Sent by express courier, delivered the next Saturday from the date of your order, subject to availability. (Order by 3:00pm the preceding Friday)

Sunday Anytime up to 6:00pm Express Courier Delivery – UK Mainland only - Zones A & B
Sent by express courier, delivered the next Saturday from the date of your order, subject to availability. (Order by 3:00pm the preceding Friday)

Orders must be placed before 3:00pm for a qualifying next day delivery and a telephone number supplied, subject to availability.

New Postage Map Sept 2018>

Delivery Surcharges

Because of the high cost of carriage, we need to apply a surcharge on all deliveries made in the following regions bringing the carriage charges to:

  • 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 2 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 purchase your items.
All stated prices are subject to VAT at the current rate where applicable E&OA