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Megger MIT310A Analogue Insulation & Continuity Tester
Includes: test lead set, crocodile clips and MIT310A User Manual.
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Developed specifically to meet the needs of today's electrical contractors, the Megger MIT310A insulation and continuity tester is not only durable and easy to use, but also incorporates a comprehensive set of features designed to ensure operator safety, even under conditions of accidental misuse.
The Megger MIT310A analogue insulation tester is surrounded by a thick rubber casing, with a large easy to read display and colour coded selectors. The MIT310A has a moving coil display for those who prefer a real moving needle. Black decals on a white background give high contrast, even in poor light conditions. The tester has a safety interlock system to prevent unsafe connection of test leads.
In line with other products in Megger's comprehensive contractor range, MIT300 insulation testers feature rugged construction, with an impact-resistant rubber-overmoulded case, and innovative circuitry which guarantees high accuracy combined with stability of calibration.
All instruments in the MIT300 range provide indication of insulation resistance up to 999Mohms, 200mA continuity testing, a fast-reacting continuity buzzer, and facilities for nulling the resistance of the test leads. The MIT310A offers insulation test voltages of 250V, 500V and 1,000V.
Digital and analogue LCD bar graph display.
Megger Intelligent Safety System built in.
250 V, 500 V and 1000 V insulation testing.
Test range of up to 999 MΩ.
Continuity testing to 100 Ω to continuity buzzer.
Locking test button.
|Insulation voltage||250 V & 500 V.|
|Nominal Test Voltage||MIT310: 310 A, 320, 330: 1000 V, 500 V, 250 V (DC)
MIT300: 500 V, 250 V (DC).
|Measuring Range||10 kΩ to 999 MΩ on all ranges.|
|Short Circuit Current||1.5 mA nominal.|
|Test Current on Load||1mA at min. pass values of insulation (as specified in BS7671, HD 384 and IEC 364).|
|Accuracy (at 20°C)||MIT300, 310, 320, 330: ±3% ± 2 digits up to 10 MΩ, ±5% up to 100 MΩ, ±30% up to full scale
MIT310 A: <2.5% of scale length (or 30% of reading 200 kΩ to 10 MΩ).
|Measuring Range||0.01 Ω to 99.9 Ω (0-50 Ω on analogue scale).|
|Open Circuit Voltage||5 V ± 1 V.|
|Short Circuit Current||MIT300, 310, 320, 330: 205 mA + 10 mA -5 mA
MIT310A: 200-250 mA.
|Continuity Accuracy||MIT300, 310, 320, 330: ±3% ± 2 digits
MIT310A: ±2.5% of scale length (or 30% of reading 0.2 to 2 kΩ).
|Measuring Range||0-2/20/200/2 kΩ.|
|Open Circuit Voltage||1.5V ± 0.5 V.|
|Zero Offset Adjust||MIT300, 310, 320, 330: 0 - 9Ω
MIT310A: 0 to 0.5 Ω.
|Continuity Buzzer||MIT300, 310: operates at <5 Ω
MIT 320, 330: adjustable from 1 Ω to 20 Ω
MIT310A: operates at <5 Ω
MIT300, 310, 320, 330: response time <20 ms
MIT310: response time <100 ms.
|Resistance Range (MIT320/330)|
|Measuring Range||10 Ω to 1 MΩ.|
|Open Circuit Voltage||5 V.|
|Short Circuit Current||1.5 mA.|
|Accuracy (at 20°C)||±5 ± 2 digits up to 100 kΩ.|
|Measuring Range (MIT310A)||0 to 2 kΩ (refer to continuity).|
|Measuring Range||0 to 600 V AC (50/60 Hz) or DC.|
|Accuracy (at 20°C)||MIT310, 320, 330: DC or AC (50/60 Hz): ±1% ± 2 digits
MIT310A: ±2.5% of scale length for 50/60 Hz.
|Temperature Coefficient||<0.1°C per °C on all ranges.|
|MIT310, 320, 330||>25 V AC or DC is applied display will operate as a voltmeter.|
|MIT300||Beeps and flashes V on the display.|
|MIT310A||All modes including OFF.|
|Test Inhibit||If more than 50 V is detected testing will be inhibited.|
|Power||8 x 1.5 V cells IEC LR6 type(AA alkaline)
Rechargeable NiCd or NiMH cells may be used.
5000 consecutive tests (5 seconds per test) on any test using 2Ah batteries.
|EMC||In accordance with IEC61326-1.|
|Dimensions||203 x 148 x 78 mm (8 x 5.7 x 3.2 inches).|
|Megger MIT310A warranty||1 year.|
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|Leads & clips||Unfused test lead set and crocodile clips.||1002-001|
|Fused leads||Fused test lead set Red/Black.||1002-015|
|Prod & clips||Prod and clip set - insulation testers.||1002-491|