To maintain and certify single and three phase electrical installations in accordance with Part P of the building standards and the IET 17th edition wiring regulations (BS7671), use the Megger MFT1721 Multifunction Tester. The Megger MFT1721 multifunction tester is perfect for approving three phase electrical projects since it has the ability to perform line to line loop tests, verify phase sequences and test three phase RCDs. The MFT 1721 is also one of only a few installation testers that can test specialised type B RCDs, which are frequently found guarding temporary generator supply and other DC installations. After performing a Zs test, the MFT1721 may calculate and show an R1+R2 reading by storing a "Z-ref" value (Ze measurement). However, after powering the circuit for live testing, this function should only be used to verify that a previously recorded R1+R2 continuity value is in fact accurate. The instrument's two rotary dials are easy to use, and the primary and secondary test settings are color-coded to lessen the likelihood that the user will choose the wrong function or range. Test results are shown on a sizable, dual-format, crystal-clear display that is visible from all angles. The Megger MFT Multifunction Tester range's instruments are covered in durable rubber, enhancing grip and adding additional shock absorption in the event of collision. They are designed for ease of use in the roughest settings. For left- and right-handed users alike, each model in the series has a "test" and "lock" button on each side of the instrument. They are also all IP54 rated, which offers ingress protection in adverse weather situations. The following tests can be run using the Megger MFT1721 Multifunction Tester: Continuity:-A 200mA test appropriate for testing R1+R2 and R2 with an adjustable buzzer threshold and a 15mA test for inductive loads. Insulation resistance: 100V, 250V, 500V and 1000V tests with adjustable buzzer threshold. Loop:-Patented anti-trip on both 2 and 3 wire test configurations are available on 2 and 3 wire test options. The loop test result is displayed in tandem with PSCC/PFC. furthermore performs line-to-line tests appropriate for three-phase installations RCD:-Test 10, 30, 100, 300, 500, and 1000mA AC, A, S, programmable, Type B, and three phase RCDs using a ramp, manually (0.5x, 1x, 5x), or automatically. TRMS Voltage:- Exact supply voltage, frequency, and phase rotation measurements
- Three instruments of the MFT1700 series are used to test low-voltage electrical installations in accordance with BS7671. For industrial, commercial, and home fixed wiring projects, they offer all the tests required to finish the requisite electrical certification, including:
Automatic start means there is no need to hit TEST, freeing up both hands for holding probes.
Resistance to continuity at 200 mA or 15 mA
Test the earth loop
testing of earth spikes
Stakeless approaches, 2-pole/3-pole, ART, and 2-pole/3-pole
100 V*, 250 V, 500 V, and 1000 V insulation tests Even when the insulation test is locked-on, input protection against live circuits up to 600 V is included.
Measurement of system voltage and frequency in TRMS
Fast continuous buzzer at adjustable thresholds and resistance range up to 100 k
Range of 2 and 3 wire non-trip
two-wire high current, phase to phase
measurement of the prospective fault current up to 20 kA
Low voltage systems without a protective device are risk-free for connection anywhere in the system, all the way up to the source transformer, as there is no danger of being damaged by significant transient spikes.
Because of its distinctive modern design, it can be used while hanging around the neck, holding in the hand, standing on the floor, a ladder-shelf, or a platform. The testers are simple to use with either your left or right hand thanks to their dual TEST and LOCK buttons, one pair at each end.
The controls are straightforward to grasp and operate, and they are color-coded to speed up and simplify range selection. Using the incorrect function or range is also less likely thanks to them. The dual digital readout simultaneously displays precise values of important measurements and test parameters, such as the output voltage on insulation testing and the resistance value in M, on a large, crystal-clear backlit display that uses the patented Megger digital/analogue arc to indicate fluctuating readings.
When evaluating high-energy systems, it is essential to have both visible and auditory safety warnings. The MFT1700 series comes with full input protection and safety alerts when a dangerous voltage is present. During insulation or continuity testing, the voltage is shown on the screen if live voltages are present on the circuit. A warning beep plays and further testing is halted if this voltage rises above a safe level.
Internally rechargeable batteries and a charger with a less-than-4-hour charge time are included in the MFT1731, which lowers the cost of ownership.
Complete adherence to all IEC 60364-derived requirements
- 2 wire anti-trip loop test with a patent
Suitable for testing single- and three-phase installation
Tests Type B and 3 phase RCDs