Megger MFT1835 - RCD, Voltage, Frequency, and Earth Test Specifications

19.1.5. RCD test:
Specfication Detail
Intrinsic current accuracy:
No trip test: (1/2xI) –10% to 0%
Trip test: (1xI, 2xI and 5xI) +0% to +10%.
Ramp test current: ±5% ±1 digit
Trip time: ±1% ±1 ms
Programmable step increments: 10 mA to 50 mA – 1 mA steps.
50 mA to 500 mA – 5 mA steps
500 mA to 1000 mA – 10 mA steps.
Supply: 48 V - 280 V (45 Hz to 65 Hz)
Max service error: ±10% ±2 digits
19.1.6. Voltage
Specfication Detail
Intrinsic accuracy: ±2% ±1 V
EN61557-1 Range: 10 V to 600 V
Phase rotation indication.
Max service error: ±5% ±2 digits
19.1.7. Frequency
Specfication Detail
Intrinsic accuracy: ±0.5% ±2 digits
Resolution: 0.1 Hz
EN61557 Range: 15 Hz to 400 Hz
Max service error: ±5% ±3 digits
19.1.8. Earth Test Ranges
Specfication Detail
Intrinsic accuracy: ±2.0% ±5 digits
ART method ±5.0% ±5 digits
Stakeless method ±7.0% ±5 digits
Resolution: 0.01 Ω
EN61557 range: 1.0 Ω to 1.99 kΩ
Current: 0.45 mA or 4.5 mA.
Noise rejection: 20 V pk/pk (7 V rms)
Max probe resistances: Rp, Rc = 100 kΩ @ 50 V
Max service error: ±20% ±3 digits
19.1.9. Current (via Clamp meter):
Specfication Detail
Intrinsic accuracy: ±5.0% ±3 digits
Resolution: 0.1 mA
EN61557 Range: 0.5 mA – 199 A
Max service error: ±10% ±2 digits
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Specifications