Megger MFT1735 Multifunction Tester

Insulation test

• Output voltage: -0% +20% at rated load or less
• Voltage display: ±3% ±3 digits ±0.5% of rated voltage
• Short circuit current: 1.5 mA nominal test current
• Test current on load: 1 mA at min pass values of insulation

Measurement accuracy

• 1000V: 10kΩ ~ 999MΩ ±3% ±2 digits
• 500V: 10kΩ ~ 500MΩ ±3% ±2 digits, >500MΩ ±10% ±4 digits
• 250V: 10kΩ ~ 250MΩ ±3% ±2 digits, >250MΩ ±10% ±4 digits
• 100V: 10kΩ ~ 100MΩ ±3% ±2 digits, >100MΩ ±10% ±4 digits

Continuity / resistance

• 0.01Ω ~ 99.9Ω: ±2% ±2 digits
• 100Ω ~ 99.9kΩ: ±5% ±2 digits
• Open circuit voltage: 5V ±1V
• Test current(0Ω ~ 2Ω): 205mA ±5mA, 15mA ±5mA(user selectable)

Loop test

• Live to earth supply: 48V ~ 280V (45Hz ~ 65Hz)
• Live to live supply: 48V ~ 480V (45Hz ~ 65Hz)
• L-E tests: ±5% 0.05Ω ±Noise margin
• L-N/L-E tests: ±5% ±0.03Ω
• Display range: 0.01Ω ~ 1000Ω
• Live to earth PFC range: 20kA
• Live to live PSCC range: 20kA

RCD tests

• Supply up to 100mA: 48V ~ 480V (45Hz ~ 65Hz)
• Supply up to 1A: 48V ~ 280V
• RCD type: Type AC, A, S, Type B (pure dc)
• No trip test (1/2xI): –10% ~ 0%
• Trip test (1xI, 2xI & 5xI): 0% ~ 10%

RCD Ramp test

• Touch voltage (0 ~ 253V): +5% +15% ±0.5V
• Trip time: ±1% ±1ms
• Trip current: ±3%

VAR (variable RCD selection)

• 10mA ~ 50mA, 1mA steps
• 50mA ~ 500mA, 5mA steps
• 500mA ~ 1000mA, 10mA steps

Supply measurement

• Voltage: 10V ~ 600V (15 ~ 400Hz) TrueRMS, ±3% ± 1V ±2 digits
• Phase rotation indication: L1–L2–L3 & L1–L3–L2
• Frequency: 15Hz ~ 99Hz ±0.5% ±1 digit, 100Hz ~ 400Hz ±2.0% ±2 digit
• Frequency resolution: 0.1Hz

Earth test

• Resolution: 0.01Ω
• Current: 0.45mA or 4.5mA
• Noise rejection: 20V pk/pk (7V rms)
• Max probe resistances Rp & Rc: 100kΩ @ 50V, 5kΩ @ 25V
• 2 & 3 pole method (0.01Ω ~ 1.999kΩ): ±2.0% ±3 digits
• ART method (1.00 Ω ~ 1.999 kΩ) ±5.0% ±3 digits
• Stakeless method (1.00 Ω ~ 199 Ω) ±7.0% ±3 digits

Current (via optional clamp meter)

• Range: 0.1mA to 200A AC
• Resolution: 0.1mA

mV Sensor input (including temperature (third party module)

• ±1.0% ±2 digits
• Range 0.0 mV to ±199.9 mV dc
• Resolution 0.1 mV

Internal memory

• Capacity 1000 results
• Bluetooth communication

Safety

• IEC 61010-1:2010
• IEC 61010-30:2010
• IEC 61010-031:2008
• 600 V Cat III / 300 V Cat IV (Max Phase to Phase 600 V)
• IEC 61557:2007 parts 1 to 10
• IEC61326 edition 2 location class B
• Temperature (operational): -10°C ~ 55°C
• Temperature (storage): -25°C ~ 70°C
• Operating humidity: 90% R.H. at 40°C max
• Max altitude: 2000m
• Weight: 1kg
• Moisture/dust ingress protection: IP54

Power

• 1.2 V NiMH (rechargeable pack of 6 – supplied)
• Mains charger for on-board re-charging (4 hours typical)
• 12 V car charger (cigar lighter lead - optional)