Megger MIT481-2 Telecoms Insulation and Continuity Tester

Product Code: MEG1004-741

Price

£889.00 ex. VAT £1066.80 inc. VAT

In Stock

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Detailed Description

Key Features:

Insulation Testing 50V-100V
Insulation testing - up to 10 GΩ or 200 GΩ
Continuity tests 200 mA or 20 mA
Capacitance measurement - auto ranges from 0.1 nF to 10 µF
AC voltage - measurement is True RMS up to 600 V.
DC Voltage - measurement to 600 V.

*Important Calibration Information:
This instrument comes with a ‘manufacturer's certificate of conformity’. It is important to understand that this does NOT constitute a ‘traceable calibration certificate’. A certificate of conformity merely states that the equipment has been designed and produced to meet the requirements of its intended application.
Where calibration of an instrument is possible, we will offer this as a separately purchasable item and may be selected from the drop-down box above. You will be sent a full traceable calibration certificate produced in our laboratory and applied with your details as required.

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