Datasheet

DESCRIPTION
The MFT1845 multifunction tester is an instrument designed for
testing low voltage electrical installations and especially in locations
that suffer from high electrical noise. It provides all the tests required
to complete the necessary electrical certification for industrial,
commercial and domestic fixed wiring installations, and includes:
 TRMS System voltage and frequency measurement
 Insulation test at 100 V, 250 V, 500 V and 1000 V
Including input protection against live circuits up to
600 V even when insulation test is locked-on
 Continuity resistance at 200 mA or 15 mA
 Automatic start - no need to press TEST so leaving
both hands free to hold probes
 Resistance range up to 100 kΩ with fast continuity
buzzer at selectable thresholds
 Earth loop impedance testing, with:
• New 3 wire non-trip technology
• New confidence meter measurement
• 2 and 3 wire non-trip range
• 2 wire Hi current including phase to phase
• Prospective fault current measurement up to 20 kA
 RCD testing including:
• Type AC, A, S, B and programmable RCDs
• 3-phase RCDs
• Auto-test routine
• Fault (Touch) voltage display
 Earth spike testing
• 2-pole/3-pole*, ART* and Stake-less* techniques
* with appropriate optional accessories
New Loop Impedance testing technology:
The MFT1845 includes a new non-trip loop testing technology that:
 Prevents any influence the RCD may present to the
total loop impedance value.
 Faster non-trip loop testing down to 8 seconds.
This technique also allows testing of loop impedance through 10 mA
type AC and Type A RCDs.
New “Confidence meter” measurement analysis
(Patent pending)
Overlaying the new non-trip loop impedance measurement is the
new Megger “Confidence meter”. As loop impedance values can be
dramatically affected by circuit noise, the Confidence Meter displays
the degree of confidence in the accuracy of the measured loop
impedance. Using the digital ARC to indicate the analytical process,
the measurement is continually monitored and adjusted when circuit
noise is present, resulting in a dramatically improved and repeatable
test result.
APPLICATIONS:
The MFT1845 offers a wide range of test functions, designed for all
electrical installation testing and verification of low voltage building
wiring and distribution testing scenarios. The MFT1845 is IEC 61010
CAT IV 300 V rated for safe connection anywhere within the LV
network on single and 3 phase systems.
The unique modern styling allows it to be operated while stood on
the floor, whilst up a ladder or platform, and optimised for hanging
around the user’s neck. Dual TEST and LOCK buttons - one pair at
each end - makes the testers easy to operate left or right handed.
MFT1845
Multifunction Tester
MFT1845
Multifunction Tester
 Enhanced non-trip loop impedance
measurement technology
 “Confidence meter” measurement analysis
(patent pending)
 Full single and 3 phase compliant
installation testing
 10 mA to 1 A single and 3 phase RCD testing
 Earth testing and stake-less testing for
electrode resistance measurement*
 Simple colour-coded test selection
 Ambidextrous operation
 Internal memory and Bluetooth®
communications
 EN61010 CAT IV safety rating and tough
IP54 case