Megger MIT481 Telecoms Insulation Tester

Megger MIT481/2 Telecoms Insulation Tester

Includes: Megger MIT481-2 Telecom Insulation & Continuity Tester, Red/Green/Black silicone test leads, Red/Green/Black test clips, Red/Green/Black probes, Quick start guide, Calibration certificate, 6 x alkaline AA (LR6) batteries, Owners CD, Hard carry case.

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NB: Please note that the MIT481/2 does not have a 1000V range.

The Megger MIT481/2 insulation and continuity tester replaces the original MIT481 and is designed specifically for the Telecommunications and Cable testing markets

In addition to the primary insulation test function, which delivers accurate results up to 100 GΩ with a test voltage of 500 V, the MIT481 Mk 2 instrument also offers fast continuity testing with a user-selectable test current of 20 mA or 200 mA. Continuity testing covers 0.01 Ω to 1 MΩ without the need for manual range switching.

As a further convenience, the MIT481/2 provides DC and true rms AC voltage measurement up to 600 V. When measuring AC voltages, frequency up to 450 Hz is simultaneously displayed.

Three terminal measurement design permits the connection of all three test leads for A, B and E (or Tip, Ring and Ground). The measurement pair is selected from the A-B-E (T-R-G) button on the front panel. Selection is confirmed in the display. No disconnection of test leads to measure individual pairs are required.

FEATURES

Insulation testing up to 500 V and 100 GΩ range in a hand held instrument.
3 wire connection for A, B and E (Tip, Ring and Earth) connection.
Gated access to 500 V to prevent accidental damage.
Rechargeable options for mains and car charging.
Single range, faster continuity testing from 0.01 Ω to 1 MΩ.
Differential measurement capability.
Stabilised insulation test voltage.
600 V Trms AC and DC voltage measurement.
Test result storage.
CAT IV 600 V and IP 54.

Specification Summary Table

Model	MIT481/2	MIT485/2
Insulation Voltage Range
50V / 100 V / 250 V / 500 V
Variable 10V to 500V
μA button (Leakage)
Lock button on MΩ
REN Telephone count (discharge)
> 500 V Gated Operation
Ohms Ranges
Continuity 0.01 Ω - 10 MΩ
Isc: 200 mA R ≤ 4Ω
Isc 20 mA
Difference measurement [REL]
Lead null (<10 Ω)
Voltage Measurement
AC / DC Volts 600 V
mV AC / DC range
Default Voltmeter
TRMS
Frequency measurement 15 - 400 Hz
Input impedance	10 MΩ	10 MΩ
Capacitance
Capacitance 0.1 nF - 10 μF
Distance by μF (Open loop)
REN calculation
Additional Features
Current measurement mA AC/DC
PASS/FAIL on limit alarms	-
A/B/E or T/R/G switching
Number of terminals	3	3
Onboard memory
Bluetooth® and software
Recharger ready
AA Alkaline or NiMH	Both	Both
CAT IV / 600V
Accessories
Silicone leads (R,B,G)
Switched probe supplied

Megger MIT480 Mk2 Series Specifications

Insulation
Test Voltage
Nominal	MIT481/2 and MIT485/2 50 V, 100 V, 250 V, 500 V.
Insulation Accuracy	50 Volts. 10 GΩ ± 2% ± 2 digits ± 4.0% per GΩ 100 Volts. 20 GΩ ± 2% ± 2 digits ± 2.0% per GΩ 250 Volts. 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ 500 Volts. 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ.
Service Error: BS EN 61557-2 (2007).	50 V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.5% 100 V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3% 250 V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3% 500 V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3%.
Display range	Analogue: 1 GΩ full scale.
Resolution	0.1 kΩ.
Short circuit/charge current	2 mA +0% -50% to EN 61557-2 (2007).
Open circuit voltage insulation	-0% +2% ± 2 V.
Test current	1 mA at min. pass value of insulation to a maximum of 2 mA max.
EN61557 Operating range	0.10 MΩ to 1.00 GΩ.
Leakage Current	10% ±3 digits.
Timer control	Countdown timer 60 second.
Note: Above specifications only apply when high quality silicone leads are being used.
Continuity
Continuity range	0.01 Ω to 1.0 MΩ.
Continuity accuracy	± 3% ± 2 digits (0 to 100 Ω) ±5% ±2 digits (>100 Ω- 500 kΩ) (>500 kΩ - 1 MΩ unspecified) Service Error: BS EN 61557-4 (2007) - ± 2.0%, 0.1Ω - 2Ω ± 6.8%.
Open circuit voltage	5 V ± 1 V.
Test current	200 mA (–0 mA +20 mA) (0.01 Ω to 4 Ω).
Lead resistance	Nulling up to 10 Ω.
mA Range
DC	0.0mA - 500mA: +/-5%, +/-2 digits.
AC	0.0mA - 10.0mA: unspecified 10.0mA - 500mA: +/-5%, +/-2 digits (15Hz - 400Hz, sinusoidal).
Voltage Range
Voltage range	AC: 10 mV to 600 V TRMS sinusoidal (15 Hz to 400 Hz) DC: 10 mV to 600 V.
Volt range accuracy	AC: ± 2% ± 2 digits DC: ± 2% ± 2 digits Service Error: BS EN 61557-1 (2007) - ± 2.0% ± 2d, 0 V - 300 V ac/dc ± 5.1%.
Waveform	Unspecified range: 0 – 10 mV (15 to 400 Hz) For non-sinusoidal waveforms additional specifications apply: Non-sinusoidal waveforms: ±3% ± 2 digits >100 mV to 600 V TRMS ±8% ± 2 digits 10 mV to 100 mV TRMS.
Default voltmeter	Operates at > 25 volts ac or dc on any range except OFF.
Frequency
Frequency measurement range	15 Hz - 400 Hz.
Frequency measurement accuracy	±0.5% ± 1 digit.
Capacitance Measurement
Capacitance range	0.1 nF to 10 μF.
Accuracy	± 5.0% ± 2 digits ( 1 nF-10 μF).
Cable coefficient	40 nF/ km to 70 nF / km.
Unit of measure	50 nF / km.
Result Storage
Storage capacity	>1000 test results.
Power Supply
Power supply	6 x 1,5 V cells type IEC LR6 (AA, MN1500, HP7, AM3 R6HP) Alkaline 6 x 1,2 V NiMH rechargeable cells may be used.
Battery life	3000 insulation tests with duty cycle of 5 sec ON /55 sec OFF @ 500 V into 500 kΩ.
Dimensions	228 mm x 108 mm x 63 mm (9.00 in x 4.25 in x 2.32 in).
Weight	800 g (1.8 lb).
Weight (instrument and case)	1.75 kg (3.86 lb).
Fuse	Use only 2 x 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse of high breaking capacity HBC 30 kA minimum.
Safety protection	The instruments meet EN 61010-1 (1995) to 600V phase to earth, Category IV. Refer to safety warnings supplied.
EMC	In accordance with IEC 61326 including amendment No.1.
Temperature coefficient	<0,1% per °C up to 1 GΩ <0,1% per °C per GΩ above 1 GΩ.
Environmental
Operating temperature range	-10 to +55 °C.
Storage temperature range	-25 to +70 °C.
Calibration temperature	+20 °C.
Maximum altitude	2000 m.
IP rating	IP54.
Megger MIT481/2 warranty	12 months (extendable to 3 years on registration).

Brand Megger

Reference 1004-741

Download

Megger MIT480/2 Datasheet

PDF Specifications of the Megger MIT481/2 & MIT485/2 Insulation Testers.

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COMPONENT	DESCRIPTION	PART No.
Charger	Mains Charger kit (MIT485/2 only).	1007-464
Car Charger	12 V DC battery charger (requires mains charger kit).	1004-183
SP5	Switched probe SP5 (Boxed).	1007-157B
Lead Set	Unfused test lead set (Red/Black/Green) for MIT481/2 and MIT485/2.	1007-780
Lead Set	Fused lead set (Red/Black), fused. Boxed.	1002-015B
Case	Blow moulded case MIT400 Mk1 & Mk2 Series.	1007-169